From: Hannes Frederic Sowa <hannes-tFNcAqjVMyqKXQKiL6tip0B+6BGkLq7r@public•gmane.org>
To: "Yang\, Yi" <yi.y.yang-ral2JQCrhuEAvxtiuMwx3w@public•gmane.org>
Cc: "dev-yBygre7rU0TnMu66kgdUjQ@public•gmane.org"
<dev-yBygre7rU0TnMu66kgdUjQ@public•gmane.org>,
"netdev-u79uwXL29TY76Z2rM5mHXA@public•gmane.org"
<netdev-u79uwXL29TY76Z2rM5mHXA@public•gmane.org>,
"jbenc-H+wXaHxf7aLQT0dZR+AlfA@public•gmane.org"
<jbenc-H+wXaHxf7aLQT0dZR+AlfA@public•gmane.org>,
"e@erig•me" <e@erig•me>
Subject: Re: [PATCH net-next v6 3/3] openvswitch: enable NSH support
Date: Tue, 05 Sep 2017 12:30:09 +0200 [thread overview]
Message-ID: <87vakxsaj2.fsf@stressinduktion.org> (raw)
In-Reply-To: <20170905021112.GA86057-re2EX8HDrk21gSHoDXDV2kEOCMrvLtNR@public.gmane.org> (Yi Yang's message of "Tue, 5 Sep 2017 10:11:12 +0800")
"Yang, Yi" <yi.y.yang-ral2JQCrhuEAvxtiuMwx3w@public•gmane.org> writes:
> I'm not sure what new action you expect to bring here, I think group
> action is just for this, as you said it isn't only bound to NSH, you can
> start a new thread to discuss this. I don't think it is in scope of NSH.
It is in scope of this discussion as you will provide a user space API
that makes the NSH context fields accessible from user space in a
certain way. If you commit to this, there is no way going back.
I haven't yet grasped the idea on how those fields will be used in OVS
besides load balancing. Even for load balancing the tunnel itself
(vxlan-gpe + UDP source port or ipv6 flowlabel) already provides enough
entropy to do per-flow load balancing. What else is needed? Why a
context header for that? You just need multiple action chains and pick
one randomly.
The only protocol that I can compare that to is geneve with TLVs, but
the TLVs are global and uniquie and a property of the networking
forwarding backplane and not a property of the path inside a tenant. So
I expect this actually to be the first case where I think that matters.
Why are context labels that special that they are not part of tun_ops?
Thanks,
Hannes
next prev parent reply other threads:[~2017-09-05 10:30 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-08-25 14:20 [PATCH net-next v6 0/3] openvswitch: add NSH support Yi Yang
2017-08-25 14:20 ` [PATCH net-next v6 1/3] net: add NSH header structures and helpers Yi Yang
2017-08-25 15:07 ` Jiri Benc
2017-08-25 14:20 ` [PATCH net-next v6 2/3] net: gso: Add GSO support for NSH Yi Yang
2017-08-25 16:25 ` Jiri Benc
2017-08-25 23:22 ` Jiri Benc
2017-08-25 14:20 ` [PATCH net-next v6 3/3] openvswitch: enable NSH support Yi Yang
2017-08-30 9:53 ` Hannes Frederic Sowa
[not found] ` <87wp5l7560.fsf-tFNcAqjVMyqKXQKiL6tip0B+6BGkLq7r@public.gmane.org>
2017-08-30 11:36 ` Mooney, Sean K
2017-08-30 15:15 ` [ovs-dev] " Hannes Frederic Sowa
[not found] ` <87inh56q8u.fsf-tFNcAqjVMyqKXQKiL6tip0B+6BGkLq7r@public.gmane.org>
2017-08-30 19:00 ` Mooney, Sean K
2017-08-31 12:49 ` [ovs-dev] " Hannes Frederic Sowa
2017-09-04 9:38 ` Jan Scheurich
2017-09-04 11:45 ` Hannes Frederic Sowa
2017-09-01 12:11 ` Jan Scheurich
2017-09-04 2:38 ` Yang, Yi
2017-09-04 11:22 ` Hannes Frederic Sowa
2017-09-04 11:57 ` Jan Scheurich
[not found] ` <87mv6abte5.fsf-tFNcAqjVMyqKXQKiL6tip0B+6BGkLq7r@public.gmane.org>
2017-09-05 2:11 ` Yang, Yi
[not found] ` <20170905021112.GA86057-re2EX8HDrk21gSHoDXDV2kEOCMrvLtNR@public.gmane.org>
2017-09-05 10:30 ` Hannes Frederic Sowa [this message]
[not found] ` <87vakxsaj2.fsf-tFNcAqjVMyqKXQKiL6tip0B+6BGkLq7r@public.gmane.org>
2017-09-05 11:38 ` Yang, Yi
[not found] ` <20170905113848.GC92895-re2EX8HDrk21gSHoDXDV2kEOCMrvLtNR@public.gmane.org>
2017-09-05 13:12 ` Hannes Frederic Sowa
[not found] ` <878thtmgra.fsf-tFNcAqjVMyqKXQKiL6tip0B+6BGkLq7r@public.gmane.org>
2017-09-06 0:53 ` Yang, Yi
[not found] ` <20170906005359.GA103260-re2EX8HDrk21gSHoDXDV2kEOCMrvLtNR@public.gmane.org>
2017-09-06 8:03 ` Hannes Frederic Sowa
[not found] ` <87o9qo9ru6.fsf-tFNcAqjVMyqKXQKiL6tip0B+6BGkLq7r@public.gmane.org>
2017-09-06 8:27 ` Jan Scheurich
[not found] ` <CFF8EF42F1132E4CBE2BF0AB6C21C58D787F5D2E-hqolJogE5njKJFWPz4pdheaU1rCVNFv4@public.gmane.org>
2017-09-06 9:37 ` Hannes Frederic Sowa
[not found] ` <87bmmo9ngt.fsf-tFNcAqjVMyqKXQKiL6tip0B+6BGkLq7r@public.gmane.org>
2017-09-06 9:54 ` Jan Scheurich
2017-09-06 10:02 ` Hannes Frederic Sowa
2017-09-06 11:03 ` Yang, Yi
2017-09-05 12:19 ` Jan Scheurich
[not found] ` <CFF8EF42F1132E4CBE2BF0AB6C21C58D787F5650-hqolJogE5njKJFWPz4pdheaU1rCVNFv4@public.gmane.org>
2017-09-05 13:34 ` Hannes Frederic Sowa
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