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: Copyright (c) 2019 Mirantis Inc., Enea AB and others.
:
: All rights reserved. This program and the accompanying materials
: are made available under the terms of the Apache License, Version 2.0
: which accompanies this distribution, and is available at
: http://www.apache.org/licenses/LICENSE-2.0
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From: Alexandru Avadanii <Alexandru.Avadanii@enea.com>
Date: Thu, 6 Dec 2018 18:25:42 +0100
Subject: [PATCH] Bring in basic VPP support

TODO:
- update README

Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>

diff --git a/neutron/agents/_vpp.sls b/neutron/agents/_vpp.sls
new file mode 100644
index 0000000..c1845d0
--- /dev/null
+++ b/neutron/agents/_vpp.sls
@@ -0,0 +1,25 @@
+{%- if pillar.neutron.gateway is defined %}
+{%- from "neutron/map.jinja" import gateway as neutron with context %}
+{%- else %}
+{%- from "neutron/map.jinja" import compute as neutron with context %}
+{%- endif %}
+
+{%- if 'vpp' in neutron.get('backend', {}).get('mechanism', []) %}
+
+/etc/neutron/plugins/ml2/ml2_conf.ini:
+  file.managed:
+  - source: salt://neutron/files/{{ neutron.version }}/_ml2_conf.vpp.ini
+  - mode: 0640
+  - user: root
+  - group: neutron
+  - template: jinja
+
+vpp:
+  service.running:
+    - enable: True
+
+vpp-agent:
+  service.running:
+    - enable: True
+
+{%- endif %}
diff --git a/neutron/compute.sls b/neutron/compute.sls
index 708a51d..3767011 100644
--- a/neutron/compute.sls
+++ b/neutron/compute.sls
@@ -111,7 +111,9 @@ neutron_metadata_agent:
     {%- if compute.opendaylight is defined %}
       {%- include "neutron/opendaylight/client.sls" %}
     {%- else %}
+      {#- We can reuse this for ml2_vpp and ignore openvswitch_agent.ini #}
       {%- include "neutron/ml2_ovs/init.sls" %}
+      {%- include "neutron/agents/_vpp.sls" %}
     {%- endif %}
 
   {%- elif compute.backend.engine == "ovn" %}
diff --git a/neutron/files/rocky/_ml2_conf.vpp.ini b/neutron/files/rocky/_ml2_conf.vpp.ini
new file mode 100644
index 0000000..2373f64
--- /dev/null
+++ b/neutron/files/rocky/_ml2_conf.vpp.ini
@@ -0,0 +1,41 @@
+{%- if pillar.neutron.server is defined %}
+{%- from "neutron/map.jinja" import server as neutron with context %}
+{%- elif pillar.neutron.gateway is defined %}
+{%- from "neutron/map.jinja" import gateway as neutron with context %}
+{%- else %}
+{%- from "neutron/map.jinja" import compute as neutron with context %}
+{%- endif %}
+
+{%- if 'vpp' in neutron.get('backend', {}).get('mechanism', []) %}
+
+{%- set physnets_vpp = [] %}
+{%- set mechanism_vpp = neutron.backend.mechanism.vpp %}
+{%- for physnet, params in neutron.backend.get('physnets', {}).iteritems() %}
+{%-   if params.get('vpp_interface', False) %}
+{%-     do physnets_vpp.append([physnet, params.get('vpp_interface')]|join(":")) %}
+{%-   endif %}
+{%- endfor %}
+{%- if not physnets_vpp %}
+{%-   do physnets_vpp.append('physnet1:tap-0') %}
+{%- endif %}
+
+{%- if pillar.neutron.server is not defined %}
+[ml2]
+type_drivers = flat,vlan
+{%- endif %}
+
+[ml2_vpp]
+jwt_signing = False
+etcd_insecure_explicit_disable_https = True
+l3_hosts = {{ mechanism_vpp.get('l3_hosts', '127.0.0.1') }}
+enable_l3_ha = False
+gpe_locators =
+gpe_src_cidr =
+enable_vpp_restart = False
+etcd_pass = {{ mechanism_vpp.get('etcd_pass', '') }}
+etcd_user = {{ mechanism_vpp.get('etcd_user', '') }}
+etcd_port = {{ mechanism_vpp.get('etcd_port', 2379) }}
+etcd_host = {{ mechanism_vpp.get('etcd_host', '127.0.0.1') }}
+physnets = {{ ','.join(physnets_vpp) }}
+
+{%- endif %}
diff --git a/neutron/files/rocky/ml2_conf.ini b/neutron/files/rocky/ml2_conf.ini
index a9a598f..4429c80 100644
--- a/neutron/files/rocky/ml2_conf.ini
+++ b/neutron/files/rocky/ml2_conf.ini
@@ -27,6 +27,9 @@ agent_boot_time = {{ server.get('agent_boot_time', 180) }}
 # List of network type driver entrypoints to be loaded from the
 # neutron.ml2.type_drivers namespace. (list value)
 #type_drivers = local,flat,vlan,gre,vxlan,geneve
+{%- if 'vpp' in server.backend.get('mechanism', []) %}
+type_drivers = flat,vlan
+{%- endif %}
 
 # Ordered list of network_types to allocate as tenant networks. The default
 # value 'local' is useful for single-box testing but provides no connectivity
@@ -239,6 +242,7 @@ neutron_sync_mode = {{ _ovn.neutron_sync_mode|default('repair') }}
 enable_distributed_floating_ip = {{ server.dvr|default('false') }}
 {%- endif %}
 
+{%- include "neutron/files/rocky/_ml2_conf.vpp.ini" %}
 
 {%- if server.backend.opendaylight|default(False) %}
 [ml2_odl]
diff --git a/neutron/gateway.sls b/neutron/gateway.sls
index e51990a..95d4d07 100644
--- a/neutron/gateway.sls
+++ b/neutron/gateway.sls
@@ -40,6 +40,8 @@ haproxy:
 
 {%- endif %}
 
+{%- include "neutron/agents/_vpp.sls" %}
+
 {%- if gateway.l2gw is defined %}
 {%- include "neutron/agents/_l2gw.sls" %}
 {%- endif %}
diff --git a/neutron/map.jinja b/neutron/map.jinja
index 9e6cb36..17cd5b3 100644
--- a/neutron/map.jinja
+++ b/neutron/map.jinja
@@ -14,9 +14,13 @@
 {%- do compute_pkgs_ovn.extend(['neutron-common', 'python-networking-ovn', 'haproxy']) %}
 {%- endif %}
 {%- set linuxbridge_enabled = pillar.neutron.compute is defined and pillar.neutron.compute.get('backend', {}).get('mechanism', {}).get('lb', {}).get('driver', {}) == "linuxbridge" %}
+{%- set vpp_enabled = 'vpp' in pillar.neutron.get('compute', {}).get('backend', {}).get('mechanism', []) %}
 {%- if linuxbridge_enabled %}
 {%- set pkgs_cmp = ['neutron-linuxbridge-agent'] %}
 {%- set services_cmp = ['neutron-linuxbridge-agent'] %}
+{%- elif vpp_enabled %}
+{%- set pkgs_cmp = ['vpp-agent'] %}
+{%- set services_cmp = ['vpp-agent'] %}
 {%- else %}
 {%- set pkgs_cmp = ['neutron-openvswitch-agent', 'python-pycadf'] %}
 {%- set services_cmp = ['neutron-openvswitch-agent'] %}
@@ -73,6 +77,7 @@
 {%- set opendaylight_enabled = pillar.neutron.gateway is defined and pillar.neutron.gateway.opendaylight is defined %}
 {%- set linuxbridge_enabled = pillar.neutron.gateway is defined and pillar.neutron.gateway.get('backend', {}).get('mechanism', {}).get('lb', {}).get('driver', {}) == "linuxbridge" %}
 {%- set dhcp_enabled = pillar.neutron.gateway is defined and pillar.neutron.gateway.get('dhcp_agent_enabled', True) %}
+{%- set vpp_enabled = 'vpp' in pillar.neutron.get('gateway', {}).get('backend', {}).get('mechanism', []) %}
 {%- set pkgs_list = ['neutron-metadata-agent'] %}
 
 {%- set services_list = ['neutron-metadata-agent'] %}
@@ -83,6 +88,13 @@
 {%- if linuxbridge_enabled %}
 {%- do pkgs_list.extend(['neutron-linuxbridge-agent', 'neutron-l3-agent']) %}
 {%- do services_list.extend(['neutron-linuxbridge-agent', 'neutron-l3-agent']) %}
+{%- elif vpp_enabled %}
+{%- do pkgs_list.extend(['vpp-agent']) %}
+{%- do services_list.extend(['vpp-agent']) %}
+{%- if 'vpp-router' not in pillar.neutron.gateway.backend.get('router', '') %}
+{%- do pkgs_list.extend(['neutron-l3-agent']) %}
+{%- do services_list.extend(['neutron-l3-agent']) %}
+{%- endif %}
 {%- elif not opendaylight_enabled %}
 {%- do pkgs_list.extend(['neutron-openvswitch-agent', 'neutron-l3-agent']) %}
 {%- do services_list.extend(['neutron-openvswitch-agent', 'neutron-l3-agent']) %}
@@ -132,6 +144,10 @@
 {%- set server_services_list = ['neutron-server'] %}
 {%- do server_services_list.append('neutron-rpc-server') if wsgi_enabled %}
 
+{%- if 'vpp' in pillar.neutron.get('server', {}).get('backend', {}).get('mechanism', []) %}
+{%- do server_pkgs_list.extend(['python3-networking-vpp']) %}
+{%- endif %}
+
 {% set server = salt['grains.filter_by']({
     'BaseDefaults': default_params,
     'Debian': {