netdev - Re: Patch for MTU in the routing table cache

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Message-ID: <1330698436.2469.27.camel@edumazet-laptop>
Date:	Fri, 02 Mar 2012 06:27:16 -0800
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Simeon Penev <spenev@...ac.de>
Cc:	netdev@...r.kernel.org
Subject: Re: Patch for MTU in the routing table cache

Le vendredi 02 mars 2012 à 14:49 +0100, Simeon Penev a écrit :
> Hi Eric,
> 
> no, i didn't. I'm new to the developer list and just wanted to post a 
> patch proposition. I hoped that the maintainer of the code (probably 
> Alan Cox) will decide whether to use it.
> 

David Miller is the current network maintainer, but thats not the
point :)

I didnt test your patch, all I wanted to say is that you cant assume all
routes share the same MTU (device MTU)

And this is the assumption you coded :

if (mtu && rt_is_output_route(rt) && mtu == dst->dev->mtu)
	return mtu;


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