netdev - Re: [RFC] IP_MAX

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Message-ID: <1356073730.21834.4917.camel@edumazet-glaptop>
Date:	Thu, 20 Dec 2012 23:08:50 -0800
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	David Miller <davem@...emloft.net>
Cc:	netdev <netdev@...r.kernel.org>, Rick Jones <rick.jones2@...com>
Subject: Re: [RFC] IP_MAX_MTU value

On Thu, 2012-12-20 at 22:47 -0800, Eric Dumazet wrote:

> It might be because in old days we reserved 16 bytes for the ethernet
> header, and we wanted to avoid kmalloc() round-up to kmalloc-131072
> slab ?

Well, we add the struct skb_shared_info anyway, so we hit kmalloc-131072
with current IP_MAX_MTU value...


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