netdev - Re: [PATCH net-next] selftests: forwarding: Import top-level lib.sh through $lib

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Message-ID: <ZXqnWsRLam2kVcqw@Laptop-X1>
Date: Thu, 14 Dec 2023 14:57:30 +0800
From: Hangbin Liu <liuhangbin@...il.com>
To: Petr Machata <petrm@...dia.com>
Cc: Petr Machata <me@...chata.org>,
	Benjamin Poirier <benjamin.poirier@...il.com>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	netdev@...r.kernel.org, Shuah Khan <shuah@...nel.org>,
	mlxsw@...dia.com, Jonathan Toppins <jtoppins@...hat.com>
Subject: Re: [PATCH net-next] selftests: forwarding: Import top-level lib.sh
 through $lib_dir

On Wed, Dec 13, 2023 at 11:31:50AM +0100, Petr Machata wrote:
> Hmm, maybe we could side-step the issue? I suspect that vast majority of
> what bonding uses are just generic helpers. log_test, check_err, that
> sort of stuff. Unless I missed something, all of them set NUM_NETIFS=0.
> Those things could all be in the generic net/lib.sh. So long-term it
> might be possible for bonding to do the trick with symlinking, except
> with just net/lib.sh, not both libs.
> 
> I think that most of forwarding/lib.sh actually belongs to net/lib.sh.
> We reinvent a lot of that functionality in various net/ tests, because,
> presumably, people find it odd to source forwarding/lib.sh. If it all
> lived in net/, we could reuse all these tools instead of cut'n'pasting
> them from one test to the other. Stuff like the mcast_packet_test,
> start/stop_traffic, etc., would probably stay in forwarding.
> 
> So that's long-term. And short-term we can live with the ugly-as-sin
> workaround that I propose?

For bonding only I think this is a good resolution. For other driver tests
that may still need to include forwarding/lib.sh. I think the way Benjamin
suggested is a good choice.

Thanks
Hangbin