From patchwork Tue Mar 7 15:00:30 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Po-Hsu Lin X-Patchwork-Id: 660275 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id C0B04C678D5 for ; Tue, 7 Mar 2023 15:08:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229927AbjCGPIQ (ORCPT ); Tue, 7 Mar 2023 10:08:16 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51940 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229978AbjCGPH6 (ORCPT ); Tue, 7 Mar 2023 10:07:58 -0500 Received: from smtp-relay-canonical-1.canonical.com (smtp-relay-canonical-1.canonical.com [185.125.188.121]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id DA8F994755; Tue, 7 Mar 2023 07:01:37 -0800 (PST) Received: from localhost.localdomain (1.general.phlin.uk.vpn [10.172.194.38]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by smtp-relay-canonical-1.canonical.com (Postfix) with ESMTPSA id 5FABC41ABE; Tue, 7 Mar 2023 15:01:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=canonical.com; s=20210705; t=1678201277; bh=Tktkkrpcs3rSHZyoHsHQYEN7vp4v2hInvSY2NkAVAZ8=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=YEqiMoqSGXa5WR4yWutTRqV1u1RHpO5RjhhR/aEpBnzSg1e01EnSibDyiHOuTSNd6 /mUdCu/1Y52GGupLdEnX1iSFxXPuKUVnIYMgRZLxDb8CYgSrRZz1VLCditKb5q95u1 7YdPBF/Gi3LIvfNwh5gAT/bs2CD6HpidH4DqQgrDfqWzNAkAk5XRn3ow2Xf7WYh6xC nXnR5No1eD3p/H0M9fc2/irHCFQuE6WwJubCK5WMzYOw59Gf/oxzg7yKYnoncXGrfq ru3dsUMUK5vDYLVSqE/OzRegxwaPXGYprB6mK1Ab731QSQUNIBYkSykhUOrNZSEWKe Cv5tNENRvvASg== From: Po-Hsu Lin To: linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, netdev@vger.kernel.org Cc: idosch@mellanox.com, danieller@mellanox.com, petrm@mellanox.com, shuah@kernel.org, pabeni@redhat.com, kuba@kernel.org, edumazet@google.com, davem@davemloft.net, po-hsu.lin@canonical.com Subject: [PATCHv2] selftests: net: devlink_port_split.py: skip test if no suitable device available Date: Tue, 7 Mar 2023 23:00:30 +0800 Message-Id: <20230307150030.527726-1-po-hsu.lin@canonical.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org The `devlink -j port show` command output may not contain the "flavour" key, an example from s390x LPAR with Ubuntu 22.10 (5.19.0-37-generic), iproute2-5.15.0: {"port":{"pci/0001:00:00.0/1":{"type":"eth","netdev":"ens301"}, "pci/0001:00:00.0/2":{"type":"eth","netdev":"ens301d1"}, "pci/0002:00:00.0/1":{"type":"eth","netdev":"ens317"}, "pci/0002:00:00.0/2":{"type":"eth","netdev":"ens317d1"}}} This will cause a KeyError exception. Create a validate_devlink_output() to check for this "flavour" from devlink command output to avoid this KeyError exception. Also let it handle the check for `devlink -j dev show` output in main(). Apart from this, if the test was not started because of any reason (e.g. "lanes" does not exist, max lanes is 0 or the flavour of the designated device is not "physical" and etc.) The script will still return 0 and thus causing a false-negative test result. Use a test_ran flag to determine if these tests were skipped and return KSFT_SKIP to make it more clear. V2: factor out the skip logic from main(), update commit message and skip reasons accordingly. Link: https://bugs.launchpad.net/bugs/1937133 Fixes: f3348a82e727 ("selftests: net: Add port split test") Signed-off-by: Po-Hsu Lin --- tools/testing/selftests/net/devlink_port_split.py | 36 +++++++++++++++++++---- 1 file changed, 31 insertions(+), 5 deletions(-) diff --git a/tools/testing/selftests/net/devlink_port_split.py b/tools/testing/selftests/net/devlink_port_split.py index 2b5d6ff..749606c 100755 --- a/tools/testing/selftests/net/devlink_port_split.py +++ b/tools/testing/selftests/net/devlink_port_split.py @@ -59,6 +59,8 @@ class devlink_ports(object): assert stderr == "" ports = json.loads(stdout)['port'] + validate_devlink_output(ports, 'flavour') + for port in ports: if dev in port: if ports[port]['flavour'] == 'physical': @@ -220,6 +222,27 @@ def split_splittable_port(port, k, lanes, dev): unsplit(port.bus_info) +def validate_devlink_output(devlink_data, target_property=None): + """ + Determine if test should be skipped by checking: + 1. devlink_data contains values + 2. The target_property exist in devlink_data + """ + skip_reason = None + if any(devlink_data.values()): + if target_property: + skip_reason = "{} not found in devlink output, test skipped".format(target_property) + for key in devlink_data: + if target_property in devlink_data[key]: + skip_reason = None + else: + skip_reason = 'devlink output is empty, test skipped' + + if skip_reason: + print(skip_reason) + sys.exit(KSFT_SKIP) + + def make_parser(): parser = argparse.ArgumentParser(description='A test for port splitting.') parser.add_argument('--dev', @@ -231,6 +254,7 @@ def make_parser(): def main(cmdline=None): + test_ran = False 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") + sys.exit(KSFT_SKIP) if __name__ == "__main__":