From: "Rémi Denis-Courmont" <remi@remlab.net>
To: David Miller <davem@davemloft.net>
Cc: <levinsasha928@gmail.com>, <davej@redhat.com>,
<netdev@vger.kernel.org>, <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] phonet: Check input from user before allocating
Date: Tue, 03 Apr 2012 08:36:20 +0200 [thread overview]
Message-ID: <dc6e3bc8b96d91bd7ce44639b60cfec2@chewa.net> (raw)
In-Reply-To: <20120402.174006.70116829696492189.davem@davemloft.net>
On Mon, 02 Apr 2012 17:40:06 -0400 (EDT), David Miller
<davem@davemloft.net> wrote:
> UDP generates a fragment list of MTU sized SKBs.
>
> Phonet could avoid the large allocations by building page based
> SKBs.
Oh right. And Phonet devices don't support scatter/gather, so that I guess
that would merely delay the problem.
Also sendmsg() code would need to be reectored to look up the output
device and then the MTU before allocating the socket buffer. This will only
work if the default MTU is reduced first :/
--
Rémi Denis-Courmont
Sent from my collocated server
next prev parent reply other threads:[~2012-04-03 6:36 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-04-02 20:31 [PATCH] phonet: Check input from user before allocating Sasha Levin
2012-04-02 19:00 ` Rémi Denis-Courmont
2012-04-02 21:38 ` David Miller
2012-04-02 19:01 ` Rémi Denis-Courmont
2012-04-02 21:40 ` David Miller
2012-04-03 1:53 ` Eric Dumazet
2012-04-03 1:59 ` David Miller
2012-04-03 2:15 ` Eric Dumazet
2012-04-03 2:23 ` David Miller
2012-04-03 2:29 ` Eric Dumazet
2012-04-03 2:29 ` Rick Jones
2012-04-03 2:34 ` Eric Dumazet
2012-04-03 2:39 ` Rick Jones
2012-04-03 3:14 ` Eric Dumazet
2012-04-03 18:18 ` Rick Jones
2012-04-03 6:36 ` Rémi Denis-Courmont [this message]
2012-04-03 6:38 ` David Miller
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