netdev - Re: [PATCH net-next] rtnetlink: move validate_linkmsg out of do

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Date: Wed, 14 Jun 2023 13:49:13 +0200
From: Simon Horman <simon.horman@...igine.com>
To: Xin Long <lucien.xin@...il.com>
Cc: network dev <netdev@...r.kernel.org>, davem@...emloft.net,
	kuba@...nel.org, Eric Dumazet <edumazet@...gle.com>,
	Paolo Abeni <pabeni@...hat.com>
Subject: Re: [PATCH net-next] rtnetlink: move validate_linkmsg out of
 do_setlink

On Mon, Jun 12, 2023 at 11:55:34AM -0400, Xin Long wrote:
> This patch moves validate_linkmsg() out of do_setlink() to its callers
> and deletes the early validate_linkmsg() call in __rtnl_newlink(), so
> that it will not call validate_linkmsg() twice in either of the paths:
> 
>   - __rtnl_newlink() -> do_setlink()
>   - __rtnl_newlink() -> rtnl_newlink_create() -> rtnl_create_link()
> 
> Additionally, as validate_linkmsg() is now only called with a real
> dev, we can remove the NULL check for dev in validate_linkmsg().
> 
> Note that we moved validate_linkmsg() check to the places where it has
> not done any changes to the dev, as Jakub suggested.
> 
> Signed-off-by: Xin Long <lucien.xin@...il.com>

Reviewed-by: Simon Horman <simon.horman@...igine.com>