Re: [PATCH 11/12] selftests/net: Add TCP-AO selfconnect/simultaneous connect test

Hangbin Liu
2023-12-18T09:12:16Z

On Fri, Dec 15, 2023 at 02:36:25AM +0000, Dmitry Safonov wrote:
> Check that a rare functionality of TCP named self-connect works with
> TCP-AO. This "under the cover" also checks TCP simultaneous connect
> (TCP_SYN_RECV socket state), which would be harder to check other ways.
>
> In order to verify that it's indeed TCP simultaneous connect, check
> the counters TCPChallengeACK and TCPSYNChallenge.
>
> Sample of the output:
> > # ./self-connect_ipv6
> > 1..4
> > # 1738[lib/setup.c:254] rand seed 1696451931
> > TAP version 13
> > ok 1 self-connect(same keyids): connect TCPAOGood 0 => 24
> > ok 2 self-connect(different keyids): connect TCPAOGood 26 => 50
> > ok 3 self-connect(restore): connect TCPAOGood 52 => 97
> > ok 4 self-connect(restore, different keyids): connect TCPAOGood 99 => 144
> > # Totals: pass:4 fail:0 xfail:0 xpass:0 skip:0 error:0
>
> Signed-off-by: Dmitry Safonov <dima@arista.com>

Tested-by: Hangbin Liu <liuhangbin@gmail.com>