[ovs-dev] OVS/OVN: Interface with NAT

[Jarno Rajahalme]

> On Jan 4, 2016, at 22:16, Amitabha Biswas <azbiswas at gmail.com> wrote:
> 
> Hi Jarno,
> 
> The patchwork link http://patchwork.ozlabs.org/bundle/jarno/OVS_NAT_v5/ is empty at this point. Does this mean that the patches have been merged in net-next?
> 

No, you should go find the patches from the patchwork individually, if the bundle is empty.

  Jarno

> Regards
> Amitabha
> 
>>> On Dec 16, 2015, at 4:42 PM, Jarno Rajahalme <jarno at ovn.org> wrote:
>>> 
>>> 
>>> On Dec 16, 2015, at 2:15 PM, Amitabha Biswas <azbiswas at gmail.com> wrote:
>>> 
>>> Hi Jarno,
>>> 
>>> As part of OVN integration in Openstack, I’ve been trying to setup OpenFlow NAT rules and run the system-test-suite 33: system-traffic.at:1396 conntrack - simple SNAT. Using the latest (as of 12/15/2015) ovs master branch on Ubuntu Linux 4.3 kernels (from kernel.ubuntu.com) fail with the following errors:
>>> 
>>> > 2015-12-16T03:05:13.945Z|00037|connmgr|INFO|br0<->unix: sending OFPBAC_BAD_TYPE error reply to OFPT_FLOW_MOD message
>>> > 2015-12-16T03:05:13.945Z|00038|vconn|DBG|unix: sent (Success): OFPT_ERROR (OF1.4) (xid=0x2): OFPBAC_BAD_TYPE
>>> 
>>> related to the flow
>>> in_port=1,ip,action=ct(commit,zone=1,nat(src=10.1.1.240-10.1.1.255)),2
>>> 
>>> Am I missing some conntrack kernel patches to get the OpenFlow NAT rules installed? If yes, how would one get those patches and which kernel images would contain them.
>> 
>> 
>> New OVS Linux datapath features are developed on top of the upstream net-next git repo. I have just addressed feedback on v4 and rebased to the now current net-next.
>> 
>> OVS tree kernel module will be updated with NAT support (and backports as far as feasible) only after the code has been merged in net-next.
>> 
>> If you want to test OVS NAT integration now you need to clone the net-next repo, apply the patches, compile a new kernel from there, and then run the OVS on top of the new kernel.
>> 
>> To make this a bit easier I have created a bundle for these patches in patchwork:
>> 
>> http://patchwork.ozlabs.org/bundle/jarno/OVS_NAT_v5/
>> 
>> You should be able to download the bundle and then apply it with “git am” to your local net-next repo.
>> 
>> Regards,
>> 
>>   Jarno
>