Aswin,
From http://www.openvswitch.org/support/dist-docs/ovs-ofctl.8.html, ct_clear
clears the following ct fields,
ct_clear
Clears connection tracking state from the flow, zeroing
ct_state, ct_zone, ct_mark, and ct_label.
This action was introduced in Open vSwitch 2.6.90.
But from the ovs2.8+, there are new CT fields introduced, will ct_clear those
as well?
CONNECTION TRACKING FIELDS
Summary:
Name Bytes Mask RW? Prereqs NXM/OXM Support
──────────── ────── ───── ──── ──────── ────────────────
ct_state 4 yes no none OVS 2.5+
ct_zone 2 no no none OVS 2.5+
ct_mark 4 yes yes none OVS 2.5+
ct_label 16 yes yes none OVS 2.5+
ct_nw_src 4 yes no CT OVS 2.8+
ct_nw_dst 4 yes no CT OVS 2.8+
ct_ipv6_src 16 yes no CT OVS 2.8+
ct_ipv6_dst 16 yes no CT OVS 2.8+
ct_nw_proto 1 no no CT OVS 2.8+
ct_tp_src 2 yes no CT OVS 2.8+
ct_tp_dst 2 yes no CT OVS 2.8+
Regards,
Arun
From: [email protected]
[mailto:[email protected]] On Behalf Of Aswin
Suryanarayanan
Sent: Tuesday, July 10, 2018 11:06 PM
To: Anil Vishnoi <[email protected]>
Cc: Jamo Luhrsen <[email protected]>; openflowplugin-dev
<[email protected]>; Luis Gomez <[email protected]>; odl
netvirt dev <[email protected]>
Subject: Re: [netvirt-dev] ovs 2.8.2 does not work well in csit
On Mon, Jul 9, 2018 at 11:25 PM, Anil Vishnoi
<[email protected]<mailto:[email protected]>> wrote:
Sam,
We are currently working on getting all the NSH related patches from jamie in,
once we get those patches in, we can see if we see these other serialization
issue.
On Mon, Jul 9, 2018 at 8:24 AM Sam Hague
<[email protected]<mailto:[email protected]>> wrote:
Arun, Anil,
thanks for merging [1]. There are other deserialization problems failing the
tests. I filed [3] to track the issues. Can you take a look and see if more
similar changes are needed? The conntrack fields overlapping with the nsh
fields definitely makes sense as the tests are conntrack based.
Arun, Jaime,
did you also try with ovs 2.9.x? I am guessing the same problems are there.
Thanks, Sam
[1] https://git.opendaylight.org/gerrit/#/c/73735/
[2] https://git.opendaylight.org/gerrit/#/c/72320/.
[3] https://jira.opendaylight.org/browse/OPNFLWPLUG-1023
[4]
https://logs.opendaylight.org/releng/vex-yul-odl-jenkins-1/builder-copy-sandbox-logs/196/shague-queens-netvirt-csit-1node-openstack-queens-upstream-stateful-fluorine/7/odl_1/odl1_karaf.log.gz
On Mon, Jul 9, 2018 at 4:09 AM Jaime Caamaño Ruiz
<[email protected]<mailto:[email protected]>> wrote:
Hello Sam
This is most likely happenning because since OVS 2.8, openflow OXM/NXM
ids that were unofficially used for the NSH fields on Yi Yang patch are
now being officially used for other different fields.
On this specific case, it is OXM field 120 in the Nicira NXM1 class,
which Yi Yang used for NshNp, but is now officially used for ct_nw_src.
So openflowplugin is wrongly interpreting ct_nw_src as NshNp.
BR
Jaime.
-----Original Message-----
From: Sam Hague <[email protected]<mailto:[email protected]>>
To: Anil Vishnoi <[email protected]<mailto:[email protected]>>
Cc: Dayavanti Gopal Kamath
<[email protected]<mailto:[email protected]>>,
Luis
Gomez <[email protected]<mailto:[email protected]>>, HCL Tech Venkatrangan G -
ERS <venkatrangang@
hcl.com<http://hcl.com>>, odl netvirt dev
<[email protected]<mailto:[email protected]>>,
openflowplugin-dev
<[email protected]<mailto:[email protected]>>,
Jamo
Luhrsen <[email protected]<mailto:[email protected]>>, Manuel Buil
<[email protected]<mailto:[email protected]>>, jcaamano@s
use.de<http://use.de>
Subject: Re: [netvirt-dev] ovs 2.8.2 does not work well in csit
Date: Sun, 8 Jul 2018 22:44:30 -0400
On Sun, Jul 8, 2018 at 5:05 PM Anil Vishnoi
<[email protected]<mailto:[email protected]>>
wrote:
> I believe upstream openflowplugin CSIT uses 2.8.0/1 version and that
> did not contain the new NSH support and that's working fine. Seems
> like the new NSH support is causing this issue. Looking like in your
> CSIT someone is trying to install the flow with the NSH match or your
> switch has NSH based flow. MatchConvertor comes into play when either
> you are pushing flow down to the switch or reading and deserializing
> the stats/packet_in coming from switch.
>
>
Anil, the exception is coming from packet_in messages and not a flow
being installed. The features for sfc/nsh are not installed so pretty
sure nothing is trying to use nsh. Can you look again at the two
exceptions to see if that is correct? OVS 2.8.0 added userspace NSH
support, with more support added in 2.8.1 and 2.8.2. I see the ofp csit
is using 2.8.1. it has deserialization errors but not the same as the
netvirt csit. ovs 2.8.2 says it moved the NSH support to the standard
spec support so maybe that is why it is causing more problems that
2.8.1?
There was a similar issue [1] fixed a while back in netvirt which was observed
with Ovs2.9. When the packet was send to netfilter by acl service , the
return packet which was submitted back to the pipeline. had many extra
headers. When this was send to the controller for resolving a PNF , the OF
plugin failed to parse these including the NSH headers. This was addressed by
calling ct_clear which removed all the extra headers added. Since we are not
using NSH/SFC these might have got added due to a similar reason. If that is
the case I think we should be checking if ovs is doing this intentionally.
[1]https://git.opendaylight.org/gerrit/#/c/69686/
> We already have patches pushed by Jamie to implement these new NSH
> fields and remove the old one, hopefully that should fix it.
>
How far along are these patches?
> On Sun, Jul 8, 2018 at 5:26 AM Sam Hague
> <[email protected]<mailto:[email protected]>> wrote:
> > Adding Daya to see if they have been doing any testing with ovs
> > 2.8.2 or later. Also forgot netvirt-dev and openflowplugin-dev
> > lists.
> >
> > On Sat, Jul 7, 2018 at 5:05 PM Sam Hague
> > <[email protected]<mailto:[email protected]>> wrote:
> > > Jamo,
> > >
> > > did we ever have any runs using ovs 2.8.2 - or really anything
> > > later than 2.7.2? [1] is a job using ovs 2.8.2 and it fails a few
> > > tests because of an openflow deserialization error with some NSH
> > > packets - but this is just our normal csit and not anything
> > > related to sfc. My 2.9 jobs also had some failures but I didn't
> > > inspect them before the sandbox cleared up this weekend.
> > >
> > > NSH support was added in 2.8 so that makes sense this could cause
> > > a problem. The exception below is coming out when the test fails
> > > - a ping fails, so I guess an arp or other punt packet is being
> > > mapped to nsh and not being decoded by openflowplugin.
> > >
> > > Jaime, Venkat,
> > >
> > > have you seen issues like this? Is it because openflowplugin has
> > > not been updated to use the new nsh and maybe some older nsh
> > > support is causing problems?
> > >
> > > Thanks, Sam
> > >
> > > [1] https://jenkins.opendaylight.org/sandbox/job/shague-queens-ne
> > > tvirt-csit-1node-openstack-queens-upstream-stateful-fluorine/3/
> > >
> > > 2018-07-07T15:28:56,461 | WARN | epollEventLoopGroup-9-1 |
> > > MatchExtensionHelper | 364 -
> > > org.opendaylight.openflowplugin - 0.7.0.SNAPSHOT | Convertor for
> > > MatchEntry{_matchEntryValue=NshNpCaseValue{_nshNpValues=NshNpValu
> > > es{_value=41, augmentation=[]}, augmentation=[]},
> > > _oxmClass=interface
> > > org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev150
> > > 225.Nxm1Class, _oxmMatchField=interface
> > > org.opendaylight.yang.gen.v1.urn.opendaylight.openflowjava.nx.mat
> > > ch.rev140421.NxmNxNshNp, _hasMask=false, augmentation=[]} for
> > > version 4 with match path PACKET_IN_MESSAGE_MATCH not found.
> > > 2018-07-07T15:28:56,462 | WARN | epollEventLoopGroup-9-1 |
> > > OFDecoder | 386 -
> > > org.opendaylight.openflowplugin.openflowjava.openflow-protocol-
> > > impl - 0.7.0.SNAPSHOT | Message deserialization
> > > failedjava.lang.NullPointerException: null at
> > > org.opendaylight.openflowplugin.openflow.md<http://openflowplugin.openflow.md>.core.extension.MatchE
> > > xtensionHelper.injectExtension(MatchExtensionHelper.java:83)
> > > [364:org.opendaylight.openflowplugin:0.7.0.SNAPSHOT] at
> > > org.opendaylight.openflowplugin.impl.protocol.deserialization.mat
> > > ch.MatchDeserializer.deserializeEntry(MatchDeserializer.java:104)
> > >
> > >
> >
> > _______________________________________________
> > netvirt-dev mailing list
> > [email protected]<mailto:[email protected]>
> > https://lists.opendaylight.org/mailman/listinfo/netvirt-dev
>
>
--
Thanks
Anil
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