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

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Message-ID: <ZAhV8nKuLVAQHQGl@nanopsycho>
Date:   Wed, 8 Mar 2023 10:31:30 +0100
From:   Jiri Pirko <jiri@...nulli.us>
To:     Po-Hsu Lin <po-hsu.lin@...onical.com>
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, kuba@...nel.org, edumazet@...gle.com,
        davem@...emloft.net
Subject: Re: [PATCHv2] selftests: net: devlink_port_split.py: skip test if no
 suitable device available

Tue, Mar 07, 2023 at 04:00:30PM CET, po-hsu.lin@...onical.com wrote:
>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"}}}

As Jakub wrote, this is odd. Could you debug if kernel sends the flavour
attr and if not why? Also, could you try with most recent kernel?