netdev - Re: [PATCH v2.33] datapath: Add basic MPLS support to kernel

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Message-ID: <CAEP_g=8X-vdMQ7RngJyidKsxhaS_p6Pa8JVh3U+fD64rt2Umzg@mail.gmail.com>
Date:	Thu, 20 Jun 2013 12:28:32 -0700
From:	Jesse Gross <jesse@...ira.com>
To:	Simon Horman <horms@...ge.net.au>
Cc:	"dev@...nvswitch.org" <dev@...nvswitch.org>,
	netdev <netdev@...r.kernel.org>, Ravi K <rkerur@...il.com>,
	Isaku Yamahata <yamahata@...inux.co.jp>,
	Pravin B Shelar <pshelar@...ira.com>,
	Jarno Rajahalme <jarno.rajahalme@....com>,
	Joe Stringer <joe@...d.net.nz>
Subject: Re: [PATCH v2.33] datapath: Add basic MPLS support to kernel

On Wed, Jun 19, 2013 at 5:56 PM, Simon Horman <horms@...ge.net.au> wrote:
> On Tue, Jun 18, 2013 at 04:06:49PM +0900, Simon Horman wrote:
>> Allow datapath to recognize and extract MPLS labels into flow keys
>> and execute actions which push, pop, and set labels on packets.
>>
>> Based heavily on work by Leo Alterman, Ravi K, Isaku Yamahata and Joe Stringer.
>>
>> Cc: Ravi K <rkerur@...il.com>
>> Cc: Leo Alterman <lalterman@...ira.com>
>> Cc: Isaku Yamahata <yamahata@...inux.co.jp>
>> Cc: Joe Stringer <joe@...d.net.nz>
>> Signed-off-by: Simon Horman <horms@...ge.net.au>
>>
>> ---
>>
>> This patch depends on "gre: Restructure tunneling" which it aims
>> to be compatible with.
>
> To clarify. The dependency relates to a conflict when applying this patch
> which modifies datapath/linux/compat/gso.[ch], files that are
> created by "gre: Restructure tunneling". I believe it would
> be trivial to reverse the dependency so that this patch creates
> those files and "gre: Restructure tunneling" applies on top of it
> as the two patches add different functions to those files.
>
> As such I think it would be better to describe this patch
> as compatible with "gre: Restructure tunneling" rather than
> dependent on it.

I agree that's the case. However, now that the OVS GRE code is
upstream, I think I can take just a quick pass over the GRE patch to
get it in and then we won't have any dependency issues.
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