Re: [PATCH] IPv6: Allow the MTU of ipip6 tunnel to be set below 1280

From: Hannes Frederic Sowa
Date: Fri Sep 27 2013 - 06:59:03 EST

On Fri, Sep 27, 2013 at 11:45:48AM +0100, Oussama Ghorbel wrote:
> The ip6_tunnel.c module would be then dependent on ip_tunnel.c and may
> be it would not be good thing?

It could just be a static inline in some shared header. So there would
be no compile-time dependency.

> As I have check in v3.10 there is no call from ip6_tunnel to ip_tunnel...
> For information, there is no check for the maximum MTU for ipv4 in the
> patch as this is not done for ipv6.

I understand, but it would be better to limit the MTU here. There is a
(non-jumo) IPV6_MAXPLEN constant.

Looking through the source it seems grev6 does actually check this,
so it would not hurt adding them here, too.

Otherwise, I think your patch is fine.



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