linux-kernel - Re: [PATCH] batman-adv: Revert "use core MTU range checking in misc drivers"

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Message-ID: <20161024014823.GA42084@redhat.com>
Date:   Sun, 23 Oct 2016 21:48:23 -0400
From:   Jarod Wilson <jarod@...hat.com>
To:     Sven Eckelmann <sven@...fation.org>
Cc:     netdev@...r.kernel.org, davem@...emloft.net,
        b.a.t.m.a.n@...ts.open-mesh.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] batman-adv: Revert "use core MTU range checking in misc
 drivers"

On Sun, Oct 23, 2016 at 09:17:50AM +0200, Sven Eckelmann wrote:
> On Samstag, 22. Oktober 2016 21:08:26 CEST Jarod Wilson wrote:
> [...]
> > You're going to
> > need more than just this revert though, since batman-adv calls
> > ether_setup, which will set min_mtu = 68, max_mtu = 1500, unless
> > batadv_hardif_min_mtu() always returns something 1500 or less.
> 
> It does only returns 1500 or less at the moment.
> 
>     return min_t(int, min_mtu - batadv_max_header_len(), ETH_DATA_LEN);
> 
> > Actually,
> > looking at that, you could omit the mtu < 68 bit from
> > batadv_interface_change_mtu() too, since that'll already get done in the
> > core, but I have no clue what you need for max_mtu.
> 
> I would like to get this revert through net-next.git before anything else.

Looks like that should work fine then.

-- 
Jarod Wilson
jarod@...hat.com