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[Bug 1781892] [NEW] QoS – Neutron port is not effected after association “Floating IP” with “QoS policy” enabled

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Public bug reported:


### Feature description ###
According QoS documentation https://docs.openstack.org/neutron/queens/admin/config-qos.html it’s possible to add QoS policy to the Floating IP and then to attach this Floating IP to the Neutron port in order to get QoS activated.
>From documentation:
The created policy can be associated with an existing floating IP. In order to do this, user extracts the floating IP id to be associated to the already created policy. In the next example, we will assign the bw-limiter policy to the floating IP address 172.16.100.18.
The QoS bandwidth limit rules attached to a floating IP will become active when you associate the latter with a port. For example, to associate the previously created floating IP 172.16.100.12 to the instance port with fixed IP 192.168.222.5:

### Scenario ###
Connect to your undercloud host, source to overcloudrc and execute the folowing commands:
1 - Create policy - "openstack network qos policy create bw-limiter" 
2 - Create rule - "openstack network qos rule create --type bandwidth-limit --max-kbps 3000 --max-burst-kbits 2400 --egress bw-limiter"
3 - Enable QoS to my Floating IP - "openstack floating ip set --qos-policy bw-limiter 10.0.0.220 "
4 - Associating FloatingIp to Port - "openstack floating ip set --port vm1_port 10.0.0.220"

### Expected ###
Once QoS is associated to the port it should be effected in “openstack port show vm1_port” its output should contain valid ID in “qos_policy_id” parameter, but actually it’s None.
I’ve tried to run the manual test (checking actual BW that supposed to be limited) in spite of the fact configuration wasn’t effected and the result is that no BW limit was detected, means no QoS.
  

### Note ###
There are no errors or warnings in CLI while configuration, the only thing that I see in server.log while executing step #4 is:

2018-06-26 14:42:07.980 27 DEBUG neutron.wsgi [-] (27) accepted ('172.17.1.10', 52720) server /usr/lib/python2.7/site-
2018-06-26 14:42:07.982 27 INFO neutron.wsgi [-] 172.17.1.10 "OPTIONS / HTTP/1.0" status: 200  len: 248 time: 0.0014350
2018-06-26 14:42:08.624 29 DEBUG neutron.wsgi [-] (29) accepted ('172.17.1.10', 52748) server /usr/lib/python2.7/site-
2018-06-26 14:42:08.626 29 INFO neutron.wsgi [-] 172.17.1.10 "GET / HTTP/1.1" status: 200  len: 229 time: 0.0011430
2018-06-26 14:42:09.123 31 DEBUG neutron_lib.callbacks.manager [req-916b4dfe-8370-43df-a58b-
2018-06-26 14:42:09.984 26 DEBUG neutron.wsgi [-] (26) accepted ('172.17.1.10', 52768) server /usr/lib/python2.7/site-
2018-06-26 14:42:09.986 26 INFO neutron.wsgi [-] 172.17.1.10 "OPTIONS / HTTP/1.0" status: 200  len: 248 time: 0.0012841
2018-06-26 14:42:11.942 29 DEBUG neutron.wsgi [-] (29) accepted ('172.17.1.10', 52810) server /usr/lib/python2.7/site-
2018-06-26 14:42:11.986 26 DEBUG neutron.wsgi [-] (26) accepted ('172.17.1.10', 52816) server /usr/lib/python2.7/site-
2018-06-26 14:42:11.988 26 INFO neutron.wsgi [-] 172.17.1.10 "OPTIONS / HTTP/1.0" status: 200  len: 248 time: 0.0009670
2018-06-26 14:42:12.150 34 DEBUG neutron_lib.callbacks.manager [req-9ef05eda-b272-449b-9cdc-
2018-06-26 14:42:12.179 29 INFO neutron.api.v2.resource [req-78f37d24-bcee-49b6-8102-
2018-06-26 14:42:12.180 29 INFO neutron.wsgi [req-78f37d24-bcee-49b6-8102-GET /v2.0/floatingips/10.0.0.220HTTP/1.1" status: 404  len: 300 time: 0.2373581
2018-06-26 14:42:12.216 29 INFO neutron.wsgi [req-da7e5822-e39a-44b0-ba27-
2018-06-26 14:42:12.256 29 INFO neutron.pecan_wsgi.hooks.
2018-06-26 14:42:12.257 29 INFO neutron.wsgi [req-e2ac800a-6ed3-4f4b-abcc-GET /v2.0/ports/vm1_port HTTP/1.1" status: 404  len: 286 time: 0.0336130
2018-06-26 14:42:12.317 29 INFO neutron.wsgi [req-ee029893-8b36-4b6f-82ba-
2018-06-26 14:42:13.988 28 DEBUG neutron.wsgi [-] (28) accepted ('172.17.1.10', 52854) server /usr/lib/python2.7/site-
2018-06-26 14:42:13.990 28 INFO neutron.wsgi [-] 172.17.1.10 "OPTIONS / HTTP/1.0" status: 200  len: 248 time: 0.0009780

** Affects: neutron
     Importance: Undecided
         Status: New


** Tags: qos

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https://bugs.launchpad.net/bugs/1781892

Title:
  QoS – Neutron port is not effected after association “Floating IP”
  with “QoS policy” enabled

Status in neutron:
  New

Bug description:
  
  ### Feature description ###
  According QoS documentation https://docs.openstack.org/neutron/queens/admin/config-qos.html it’s possible to add QoS policy to the Floating IP and then to attach this Floating IP to the Neutron port in order to get QoS activated.
  From documentation:
  The created policy can be associated with an existing floating IP. In order to do this, user extracts the floating IP id to be associated to the already created policy. In the next example, we will assign the bw-limiter policy to the floating IP address 172.16.100.18.
  The QoS bandwidth limit rules attached to a floating IP will become active when you associate the latter with a port. For example, to associate the previously created floating IP 172.16.100.12 to the instance port with fixed IP 192.168.222.5:

  ### Scenario ###
  Connect to your undercloud host, source to overcloudrc and execute the folowing commands:
  1 - Create policy - "openstack network qos policy create bw-limiter" 
  2 - Create rule - "openstack network qos rule create --type bandwidth-limit --max-kbps 3000 --max-burst-kbits 2400 --egress bw-limiter"
  3 - Enable QoS to my Floating IP - "openstack floating ip set --qos-policy bw-limiter 10.0.0.220 "
  4 - Associating FloatingIp to Port - "openstack floating ip set --port vm1_port 10.0.0.220"

  ### Expected ###
  Once QoS is associated to the port it should be effected in “openstack port show vm1_port” its output should contain valid ID in “qos_policy_id” parameter, but actually it’s None.
  I’ve tried to run the manual test (checking actual BW that supposed to be limited) in spite of the fact configuration wasn’t effected and the result is that no BW limit was detected, means no QoS.
    

  ### Note ###
  There are no errors or warnings in CLI while configuration, the only thing that I see in server.log while executing step #4 is:

  2018-06-26 14:42:07.980 27 DEBUG neutron.wsgi [-] (27) accepted ('172.17.1.10', 52720) server /usr/lib/python2.7/site-
  2018-06-26 14:42:07.982 27 INFO neutron.wsgi [-] 172.17.1.10 "OPTIONS / HTTP/1.0" status: 200  len: 248 time: 0.0014350
  2018-06-26 14:42:08.624 29 DEBUG neutron.wsgi [-] (29) accepted ('172.17.1.10', 52748) server /usr/lib/python2.7/site-
  2018-06-26 14:42:08.626 29 INFO neutron.wsgi [-] 172.17.1.10 "GET / HTTP/1.1" status: 200  len: 229 time: 0.0011430
  2018-06-26 14:42:09.123 31 DEBUG neutron_lib.callbacks.manager [req-916b4dfe-8370-43df-a58b-
  2018-06-26 14:42:09.984 26 DEBUG neutron.wsgi [-] (26) accepted ('172.17.1.10', 52768) server /usr/lib/python2.7/site-
  2018-06-26 14:42:09.986 26 INFO neutron.wsgi [-] 172.17.1.10 "OPTIONS / HTTP/1.0" status: 200  len: 248 time: 0.0012841
  2018-06-26 14:42:11.942 29 DEBUG neutron.wsgi [-] (29) accepted ('172.17.1.10', 52810) server /usr/lib/python2.7/site-
  2018-06-26 14:42:11.986 26 DEBUG neutron.wsgi [-] (26) accepted ('172.17.1.10', 52816) server /usr/lib/python2.7/site-
  2018-06-26 14:42:11.988 26 INFO neutron.wsgi [-] 172.17.1.10 "OPTIONS / HTTP/1.0" status: 200  len: 248 time: 0.0009670
  2018-06-26 14:42:12.150 34 DEBUG neutron_lib.callbacks.manager [req-9ef05eda-b272-449b-9cdc-
  2018-06-26 14:42:12.179 29 INFO neutron.api.v2.resource [req-78f37d24-bcee-49b6-8102-
  2018-06-26 14:42:12.180 29 INFO neutron.wsgi [req-78f37d24-bcee-49b6-8102-GET /v2.0/floatingips/10.0.0.220HTTP/1.1" status: 404  len: 300 time: 0.2373581
  2018-06-26 14:42:12.216 29 INFO neutron.wsgi [req-da7e5822-e39a-44b0-ba27-
  2018-06-26 14:42:12.256 29 INFO neutron.pecan_wsgi.hooks.
  2018-06-26 14:42:12.257 29 INFO neutron.wsgi [req-e2ac800a-6ed3-4f4b-abcc-GET /v2.0/ports/vm1_port HTTP/1.1" status: 404  len: 286 time: 0.0336130
  2018-06-26 14:42:12.317 29 INFO neutron.wsgi [req-ee029893-8b36-4b6f-82ba-
  2018-06-26 14:42:13.988 28 DEBUG neutron.wsgi [-] (28) accepted ('172.17.1.10', 52854) server /usr/lib/python2.7/site-
  2018-06-26 14:42:13.990 28 INFO neutron.wsgi [-] 172.17.1.10 "OPTIONS / HTTP/1.0" status: 200  len: 248 time: 0.0009780

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