netdev - Re: [PATCH net-next v2 3/4] devlink: expose get/put functions

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Date:   Mon, 1 Nov 2021 06:44:40 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     Leon Romanovsky <leon@...nel.org>
Cc:     davem@...emloft.net, netdev@...r.kernel.org, jiri@...nulli.us,
        mkubecek@...e.cz, andrew@...n.ch, f.fainelli@...il.com
Subject: Re: [PATCH net-next v2 3/4] devlink: expose get/put functions

On Sun, 31 Oct 2021 08:29:20 +0200 Leon Romanovsky wrote:
> I really like this series, but your latest netdevsim RFC made me worry.
> 
> It is important to make sure that these devlink_put() and devlink_get()
> calls will be out-of-reach from the drivers. Only core code should use
> them.

get/put symbols are not exported so I think we should be safe
from driver misuse at this point. If we ever export them we 
should add a 

  WARN_ON(!(devlink->lock_flags & DEVLINK_LOCK_USE_REF));

> Can you please add it as a comment above these functions?

Will do if the RFC sinks.

> At least for now, till we discuss your RFC.