linux-kernel - Re: [PATCHv2] selftests: net: devlink_port_split.py: skip test if no suitable device available

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Date:   Wed, 15 Mar 2023 17:11:44 +0800
From:   Po-Hsu Lin <po-hsu.lin@...onical.com>
To:     Jakub Kicinski <kuba@...nel.org>
Cc:     linux-kernel@...r.kernel.org, linux-kselftest@...r.kernel.org,
        netdev@...r.kernel.org, idosch@...lanox.com,
        danieller@...lanox.com, petrm@...lanox.com, shuah@...nel.org,
        pabeni@...hat.com, edumazet@...gle.com, davem@...emloft.net
Subject: Re: [PATCHv2] selftests: net: devlink_port_split.py: skip test if no
 suitable device available

On Sat, Mar 11, 2023 at 8:05 AM Jakub Kicinski <kuba@...nel.org> wrote:
>
> On Tue,  7 Mar 2023 23:00:30 +0800 Po-Hsu Lin wrote:
> >  def main(cmdline=None):
> > +    test_ran = False
>
> Could you move this variable init right before the
>
>         for port in ports.if_names:
>
> line, and call it something like found_max_lanes ?
>
> >      parser = make_parser()
> >      args = parser.parse_args(cmdline)
> >
> > @@ -240,12 +264,9 @@ def main(cmdline=None):
> >          stdout, stderr = run_command(cmd)
> >          assert stderr == ""
> >
> > +        validate_devlink_output(json.loads(stdout))
> >          devs = json.loads(stdout)['dev']
> > -        if devs:
> > -            dev = list(devs.keys())[0]
> > -        else:
> > -            print("no devlink device was found, test skipped")
> > -            sys.exit(KSFT_SKIP)
> > +        dev = list(devs.keys())[0]
> >
> >      cmd = "devlink dev show %s" % dev
> >      stdout, stderr = run_command(cmd)
> > @@ -277,6 +298,11 @@ def main(cmdline=None):
> >                  split_splittable_port(port, lane, max_lanes, dev)
> >
> >                  lane //= 2
> > +        test_ran = True
> > +
> > +    if not test_ran:
> > +        print("Test not started, no suitable device for the test")
>
> Then change the message to
>
>         f"Test not started, no port of device {dev} reports max_lanes"
>

Sure,
will update this in V3
Thanks for the feedback!

> > +        sys.exit(KSFT_SKIP)
> >