netdev - Re: [PATCH net 2/3] rtnetlink: move IFLA_GSO_ tb check to validate

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Date: Fri, 26 May 2023 12:40:45 +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>, Thomas Graf <tgraf@...radead.org>,
	Alexander Duyck <alexanderduyck@...com>
Subject: Re: [PATCH net 2/3] rtnetlink: move IFLA_GSO_ tb check to
 validate_linkmsg

On Thu, May 25, 2023 at 05:49:16PM -0400, Xin Long wrote:
> These IFLA_GSO_* tb check should also be done for the new created link,
> otherwise, they can be set to a huge value when creating links:
> 
>   # ip link add dummy1 gso_max_size 4294967295 type dummy
>   # ip -d link show dummy1
>     dummy addrgenmode eui64 ... gso_max_size 4294967295
> 
> Fixes: 46e6b992c250 ("rtnetlink: allow GSO maximums to be set on device creation")
> Fixes: 9eefedd58ae1 ("net: add gso_ipv4_max_size and gro_ipv4_max_size per device")
> Signed-off-by: Xin Long <lucien.xin@...il.com>

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