linux-kernel - Re: [PATCH net 2/2] selftests: bonding: add test for passive LACP mode

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Message-ID: <aIN-Nv_w0N6jdSsD@fedora>
Date: Fri, 25 Jul 2025 12:53:10 +0000
From: Hangbin Liu <liuhangbin@...il.com>
To: Petr Machata <petrm@...dia.com>
Cc: Paolo Abeni <pabeni@...hat.com>, netdev@...r.kernel.org,
	Jay Vosburgh <jv@...sburgh.net>,
	Andrew Lunn <andrew+netdev@...n.ch>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>,
	Nikolay Aleksandrov <razor@...ckwall.org>,
	Simon Horman <horms@...nel.org>, Shuah Khan <shuah@...nel.org>,
	linux-kselftest@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH net 2/2] selftests: bonding: add test for passive LACP
 mode

On Fri, Jul 25, 2025 at 10:27:48AM +0200, Petr Machata wrote:
> 
> Hangbin Liu <liuhangbin@...il.com> writes:
> 
> > On Thu, Jul 24, 2025 at 04:06:03AM +0000, Hangbin Liu wrote:
> >> On Tue, Jul 15, 2025 at 11:37:54AM +0200, Paolo Abeni wrote:
> >> > > diff --git a/tools/testing/selftests/drivers/net/bonding/bond_passive_lacp.sh
> >> > > b/tools/testing/selftests/drivers/net/bonding/bond_passive_lacp.sh
> >> > > new file mode 100755
> >> > > index 000000000000..4cf8a5999aaa
> >> > > --- /dev/null
> >> > > +++ b/tools/testing/selftests/drivers/net/bonding/bond_passive_lacp.sh
> >> > > @@ -0,0 +1,21 @@
> >> > > +#!/bin/sh
> >> > > +# SPDX-License-Identifier: GPL-2.0
> >> > > +#
> >> > > +# Testing if bond works with lacp_active = off
> >> > > +
> >> > > +lib_dir=$(dirname "$0")
> >> > > +source ${lib_dir}/bond_topo_lacp.sh
> >> > 
> >> > shellcheck is not super happy about 'source' usage:
> >> > 
> >> > In bond_passive_lacp.sh line 7:
> >> > source ${lib_dir}/bond_topo_lacp.sh
> >> > ^-- SC3046 (warning): In POSIX sh, 'source' in place of '.' is undefined.
> >> > ^-- SC3051 (warning): In POSIX sh, 'source' in place of '.' is undefined.
> >> > 
> >> > either switch to '. ' or use bash instead of 'sh'.
> >> 
> >> Hi Paolo,
> >> 
> >> I updated the case and remove the source file bond_topo_lacp.sh.
> >> Instead I source the forwarding lib directly like:
> >> 
> >> lib_dir=$(dirname "$0")
> >> source "$lib_dir"/../../../net/forwarding/lib.sh
> >> 
> >> But this cause shell check unable to find the lib.sh as $lib_dir is get
> >> dynamically. This usage is common in selftest. How should we resolves this
> >> problem?
> >
> > OK, I just disabled this warning.
> >
> > # shellcheck disable=SC1091
> 
> I believe the point was only about using "." instead of "source". The
> following should have fixed it:
> 
> . ${lib_dir}/bond_topo_lacp.sh
> 
> ... or just use bash as the interpreter, I suspect lib.sh is not
> actually POSIX clean.

Thanks Petr, I know Paolo means to use "." to fix this. The issue is that
I changed the script to source forwarding lib. And shell check could only
analyse static path. Unless use -x to supply the real source path. But I guess
the CI can't do this. So I disabled the SC1091 checking as a workaround.

Regards
Hangbin