netdev - Re: OVS VXLAN decap rule has full match on TTL for the outer headers?

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Message-ID: <CAOftzPieLwrF2V5YknHBRHxpGSsHqvqDoiHFPvXEcp3NUe24Gw@mail.gmail.com>
Date:	Wed, 2 Dec 2015 10:01:43 -0800
From:	Joe Stringer <joe@....org>
To:	Or Gerlitz <gerlitz.or@...il.com>
Cc:	Jesse Gross <jesse@...nel.org>, Or Gerlitz <ogerlitz@...lanox.com>,
	Jesse Gross <jesse@...ira.com>,
	Haggai Eran <haggaie@...lanox.com>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	Ilya Lesokhin <ilyal@...lanox.com>,
	Rony Efraim <ronye@...lanox.com>,
	Hadar Hen Zion <hadarh@...lanox.com>,
	Tal Anker <Ankertal@...lanox.com>, Joe Stringer <joe@....org>
Subject: Re: OVS VXLAN decap rule has full match on TTL for the outer headers?

On 29 November 2015 at 05:37, Or Gerlitz <gerlitz.or@...il.com> wrote:
> On Thu, Nov 19, 2015 at 5:40 PM, Or Gerlitz <gerlitz.or@...il.com> wrote:
>> On Sat, Nov 14, 2015 at 8:45 AM, Joe Stringer <joestringer@...ira.com> wrote:
>>> On 13 November 2015 at 06:46, Or Gerlitz <gerlitz.or@...il.com> wrote:
>>>> On Fri, Nov 13, 2015 at 10:14 AM, Joe Stringer <joestringer@...ira.com> wrote:
>>
>>>>> I agree that this UNSPEC issue on v2.3 could do with a bit of a closer
>>>>> look. I'll see if I can find some time for it. Alternatively if you're
>>>>> willing and have bandwith, I'd be curious if it's related to the
>>>>> masked set field feature introduced in Linux-4.0.
>>
>>>> so what would you suggest here? run with 3.19 or earlier?
>>
>>> On second thought, I think if it were related to that then userspace
>>> v2.4 would not exhibit the problem. I'd have to dig in to see why it
>>> occurs.
>>
>> Any findings?
>
> Hi Joe/Jesse,
>
> Apart from Haggai's note on the TTL, I am pinging you here for the 2nd
> time... can you please let me know how
> this goes on your end?

Apologies for the delayed response, we haven't found anything
interesting yet although we've mostly looked at plain set-field
actions with a combination of kernel/userspace versions. I plan to
carve out some time later this week to take another look.
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