linux-kernel - Re: [PATCHv4 net-next 05/10] openvswitch: Add conntrack action

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Message-ID: <20150820162148.GA5599@pox.localdomain>
Date:	Thu, 20 Aug 2015 18:21:48 +0200
From:	Thomas Graf <tgraf@...g.ch>
To:	Joe Stringer <joestringer@...ira.com>
Cc:	netdev@...r.kernel.org, pshelar@...ira.com,
	linux-kernel@...r.kernel.org, pablo@...filter.org,
	fwestpha@...hat.com, hannes@...hat.com, jpettit@...ira.com,
	jesse@...ira.com, Andy Zhou <azhou@...ira.com>
Subject: Re: [PATCHv4 net-next 05/10] openvswitch: Add conntrack action

On 08/18/15 at 04:39pm, Joe Stringer wrote:
> Expose the kernel connection tracker via OVS. Userspace components can
> make use of the "ct()" action, followed by "recirculate", to populate
> the conntracking state in the OVS flow key, and subsequently match on
> that state.
> 
> Example ODP flows allowing traffic from 1->2, only replies from 2->1:
> in_port=1,tcp,action=ct(commit,zone=1),2
> in_port=2,ct_state=-trk,tcp,action=ct(zone=1),recirc(1)
> recirc_id=1,in_port=2,ct_state=+trk+est-new,tcp,action=1
> 
> IP fragments are handled by transparently assembling them as part of the
> ct action. The maximum received unit (MRU) size is tracked so that
> refragmentation can occur during output.
> 
> IP frag handling contributed by Andy Zhou.
> 
> Signed-off-by: Joe Stringer <joestringer@...ira.com>
> Signed-off-by: Justin Pettit <jpettit@...ira.com>
> Signed-off-by: Andy Zhou <azhou@...ira.com>

OVS bits look great.

Acked-by: Thomas Graf <tgraf@...g.ch>
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