[ovs-discuss] ovs-vsctl: Error detected while setting up 'gtp0'

[Joe Stringer]

On 12 September 2016 at 01:02, Ashish Kurian <ashishbnv at gmail.com> wrote:
> Dear Team,
>
> I am trying to add a gtp-u implementation to ovs. I applied a patch that was
> available with me and gave the following ovs-vsctl command.
>
> sudo ovs-vsctl add-port br0 gtp0 -- set interface gtp0 type=gtp
> options:remote_ip=192.168.1.1,local_ip=192.168.1.2,teid_in=1,teid_out=2,arp_reply=true
>
> I got the error mentioned in the subject. Then I checked the
> ovs-vswitchd.log and following is the result.
>
> 2016-09-12T07:52:59.217Z|00038|bridge|INFO|bridge br0: added interface br0
> on port 65534
> 2016-09-12T07:52:59.217Z|00039|bridge|INFO|bridge br0: using datapath ID
> 00002e858541b64f
> 2016-09-12T07:52:59.217Z|00040|connmgr|INFO|br0: added service controller
> "punix:/var/run/openvswitch/br0.mgmt"
> 2016-09-12T07:54:27.515Z|00041|socket_util|ERR|"192.168.1.1,local_ip=192.168.1.2,teid_in=1,teid_out=2,arp_reply=true"
> is not a valid IP address
> 2016-09-12T07:54:27.515Z|00042|netdev_vport|WARN|gtp0: bad gtp 'remote_ip'
> 2016-09-12T07:54:27.515Z|00043|netdev_vport|ERR|gtp0: gtp type requires
> valid 'remote_ip' argument
> 2016-09-12T07:54:27.515Z|00044|netdev|WARN|gtp0: could not set configuration
> (Invalid argument)
>
> I am not sure from which file ovs looking for the exact configurations. If
> you can advice on which all files I should check, then I can look in those
> files and identify the reason for the errors.

I would start from where the error is reported and work backwards:

ovs $ git grep "requires valid 'remote_ip'"
lib/netdev-vport.c:        VLOG_ERR("%s: %s type requires valid
'remote_ip' argument",