Re: [PATCH] phonet: Check input from user before allocating

From: RÃmi Denis-Courmont
Date: Tue Apr 03 2012 - 02:36:24 EST


On Mon, 02 Apr 2012 17:40:06 -0400 (EDT), David Miller
<davem@xxxxxxxxxxxxx> 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 :/

--
RÃmi Denis-Courmont
Sent from my collocated server
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/