netdev - Re: [patch net-next RFC 3/8] net: devlink: introduce devlink_compat_switch_id

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Message-ID: <20190301084515.5b378b37@cakuba.netronome.com>
Date:   Fri, 1 Mar 2019 08:45:15 -0800
From:   Jakub Kicinski <jakub.kicinski@...ronome.com>
To:     Jiri Pirko <jiri@...nulli.us>
Cc:     netdev@...r.kernel.org, davem@...emloft.net, mlxsw@...lanox.com,
        idosch@...lanox.com, dirk.vandermerwe@...ronome.com,
        f.fainelli@...il.com, andrew@...n.ch, vivien.didelot@...il.com
Subject: Re: [patch net-next RFC 3/8] net: devlink: introduce
 devlink_compat_switch_id_get() helper

On Fri,  1 Mar 2019 17:05:37 +0100, Jiri Pirko wrote:
> From: Jiri Pirko <jiri@...lanox.com>
> 
> Introduce devlink_compat_switch_id_get() helper which fills up switch_id
> according to passed netdev pointer. Call it directly from
> dev_get_port_parent_id() as a fallback when ndo_get_port_parent_id
> is not defined for given netdev.
> 
> Signed-off-by: Jiri Pirko <jiri@...lanox.com>

Here my locking concerns are even stronger :S  Do you want to introduce
some extra ordering rules regarding lifetime of devlink ports and their
netdevs?