linux-kernel - Re: ipv4: Constrain UFO fragment sizes to multiples of 8 bytes

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Message-ID: <475a604a-6364-659c-afee-67e31005b17d@stressinduktion.org>
Date:	Fri, 10 Jun 2016 00:39:11 +0200
From:	Hannes Frederic Sowa <hannes@...essinduktion.org>
To:	Cong Wang <xiyou.wangcong@...il.com>,
	Steven Caron <steven.caron@...band.com>
Cc:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Linux Kernel Network Developers <netdev@...r.kernel.org>
Subject: Re: ipv4: Constrain UFO fragment sizes to multiples of 8 bytes

On 09.06.2016 06:59, Cong Wang wrote:
> (Cc'ing netdev...)
> 
> On Mon, Jun 6, 2016 at 1:24 PM, Steven Caron <steven.caron@...band.com> wrote:
>> Back in 2011, Bill Sommerfeld submitted an update to prevent ip_append_data to create malformed packets:
>>  Commit: d9be4f7a6f5a8da3133b832eca41c3591420b1ca
>>
>> Now we're finding that we need to apply the same logic to ip_append_page  to get nfs to work with udp when UFO is enabled:

Uhh, absolutely for the same reason as described in the referred commit.
 Can you send a patch?

Thanks,
Hannes