linux-kernel - Re: [PATCH] selftests/net/forwarding: teamd command not found

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Message-ID: <20250110171638.58114f75@kernel.org>
Date: Fri, 10 Jan 2025 17:16:38 -0800
From: Jakub Kicinski <kuba@...nel.org>
To: Alessandro Zanni <alessandro.zanni87@...il.com>, petrm@...dia.com
Cc: Hangbin Liu <liuhangbin@...il.com>, davem@...emloft.net,
 edumazet@...gle.com, pabeni@...hat.com, shuah@...nel.org,
 netdev@...r.kernel.org, linux-kselftest@...r.kernel.org,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH] selftests/net/forwarding: teamd command not found

On Fri, 10 Jan 2025 15:35:23 +0100 Alessandro Zanni wrote:
> On Fri, Jan 10, 2025 at 04:09:07AM +0000, Hangbin Liu wrote:
> > On Fri, Jan 10, 2025 at 01:07:44AM +0100, Alessandro Zanni wrote:  
> > > Running "make kselftest TARGETS=net/forwarding" results in several
> > > occurrences of the same error:
> > >  ./lib.sh: line 787: teamd: command not found
> > > 
> > > Since many tests depends on teamd, this fix stops the tests if the
> > > teamd command is not installed.
> > > 
> > > Signed-off-by: Alessandro Zanni <alessandro.zanni87@...il.com>
> > > ---
> > >  tools/testing/selftests/net/forwarding/lib.sh | 1 +
> > >  1 file changed, 1 insertion(+)
> > > 
> > > diff --git a/tools/testing/selftests/net/forwarding/lib.sh b/tools/testing/selftests/net/forwarding/lib.sh
> > > index 7337f398f9cc..a6a74a4be4bf 100644
> > > --- a/tools/testing/selftests/net/forwarding/lib.sh
> > > +++ b/tools/testing/selftests/net/forwarding/lib.sh
> > > @@ -784,6 +784,7 @@ team_destroy()
> > >  {
> > >  	local if_name=$1; shift
> > >  
> > > +	require_command $TEAMD
> > >  	$TEAMD -t $if_name -k
> > >  }  
> > 
> > I saw team_create() has `require_command $TEAMD`. Is some test called
> > team_destroy() before team_create()?  
> 
> Actually, the errors seem to raise in the "cleanup()" method.
> 
> So, first, during the test preparation the "team_create()" method is called
> and checks if teamd is installed. 
> When it fails and skips the test, the "cleanup()" method calls
> the "team_destroy()" that raises the errors.

Actually, maybe we're better off switching the team handling to the way
REQUIRE_JQ REQUIRE_MZ etc are handled? That way we'll validate and exit 
when lib is imported / sourced.

Petr, do you have a preference?
-- 
pw-bot: cr