netdev - Re: [PATCH net-next 16/17] selftests: netfilter: add packetdrill based conntrack tests

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Date: Mon, 13 May 2024 14:41:14 -0700
From: Jakub Kicinski <kuba@...nel.org>
To: Florian Westphal <fw@...len.de>
Cc: Pablo Neira Ayuso <pablo@...filter.org>,
 netfilter-devel@...r.kernel.org, davem@...emloft.net,
 netdev@...r.kernel.org, pabeni@...hat.com, edumazet@...gle.com
Subject: Re: [PATCH net-next 16/17] selftests: netfilter: add packetdrill
 based conntrack tests

On Mon, 13 May 2024 22:03:14 +0200 Florian Westphal wrote:
> Jakub Kicinski <kuba@...nel.org> wrote:
> > Hi Florian, I installed packetdrill in the morning and the test..
> > almost.. passes:  
> 
> Thanks a lot!
> 
> > # packetdrill/conntrack_synack_reuse.pkt            (ipv6)                    packetdrill/conntrack_synack_reuse.pkt:33: error executing `conntrack -L -p tcp --dport 8080 2>/dev/null | grep -q SYN_RECV` command: non-zero status 1  
> 
> Grrr, my fault, I used a more ...forgiving version of conntrack tools.
> 
> I bet its because of missing "-f ipv6" flag, so changing the line to
> include "-f $NFCT_IP_VERSION" like in the other files should make it
> work.

Ah, makes sense. I added a local patch to the system, it should be
applied on the next test, just to confirm.

> I intend to wait for a few months before adding more test cases to
> see how stable these tests will be wrt. changes elsewhere in the stack,
> there are a few other corner cases that would be nice to have coverage
> for.
>