Re: [PATCH net v2 0/2] tcp: restrict crossed SYN specific actions to SYN-ACK

[Eric Dumazet]

On Tue, Jul 23, 2024 at 1:10 AM Paolo Abeni <pabeni@xxxxxxxxxx> wrote:
>
> On 7/18/24 12:33, Matthieu Baerts (NGI0) wrote:
> > A recent commit in TCP affects TFO and MPTCP in some cases. The first
> > patch fixes that.
> >
> > The second one applies the same fix to another crossed SYN specific
> > action just before.
> >
> > These two fixes simply restrict what should be done only for crossed SYN
> > cases to packets with SYN-ACK flags.
> >
> > Signed-off-by: Matthieu Baerts (NGI0) <matttbe@xxxxxxxxxx>
> > ---
> > Changes in v2:
> > - Patch 1/2 has a simpler and generic check (Kuniyuki), and an updated
> >    comment.
> > - New patch 2/2: a related fix
> > - Link to v1: https://lore.kernel.org/r/20240716-upstream-net-next-20240716-tcp-3rd-ack-consume-sk_socket-v1-1-4e61d0b79233@xxxxxxxxxx
>
> Re-adding Neal for awareness. It would be great if this could go through
> some packetdrill testing,
>

I am back in France, let me see what I can do.