netdev - Re: [PATCH net v2] mptcp: bugfix for RM

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Date:   Mon, 8 Jun 2020 13:19:02 +0200
From:   Matthieu Baerts <matthieu.baerts@...sares.net>
To:     Geliang Tang <geliangtang@...il.com>,
        Mat Martineau <mathew.j.martineau@...ux.intel.com>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Peter Krystad <peter.krystad@...ux.intel.com>
Cc:     netdev@...r.kernel.org, mptcp@...ts.01.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH net v2] mptcp: bugfix for RM_ADDR option parsing

Hi Geliang,

On 08/06/2020 12:47, Geliang Tang wrote:
> In MPTCPOPT_RM_ADDR option parsing, the pointer "ptr" pointed to the
> "Subtype" octet, the pointer "ptr+1" pointed to the "Address ID" octet:
> 
>    +-------+-------+---------------+
>    |Subtype|(resvd)|   Address ID  |
>    +-------+-------+---------------+
>    |               |
>   ptr            ptr+1
> 
> We should set mp_opt->rm_id to the value of "ptr+1", not "ptr". This patch
> will fix this bug.
> 
> Fixes: 3df523ab582c ("mptcp: Add ADD_ADDR handling")
> Signed-off-by: Geliang Tang <geliangtang@...il.com>
> ---
>   Changes in v2:
>    - Add "-net" subject and "Fixes" tag as Matt suggested.

Thanks for this v2! LGTM!

Reviewed-by: Matthieu Baerts <matthieu.baerts@...sares.net>

Cheers,
Matt
-- 
Matthieu Baerts | R&D Engineer
matthieu.baerts@...sares.net
Tessares SA | Hybrid Access Solutions
www.tessares.net
1 Avenue Jean Monnet, 1348 Louvain-la-Neuve, Belgium