From cc056ce7dfa22a4b286a778103609ad8f56c9917 Mon Sep 17 00:00:00 2001
From: Doug Goldstein <doug.goldstein@rackspace.com>
Date: Thu, 8 May 2025 15:51:37 -0500
Subject: [PATCH] feat(neutron-understack): add L3 router example plugins

These plugins serve the purpose of being able to be loaded and be used
for conversations around different router backend implementations. The
networking design doc references these plugins in its examples.
---
 components/neutron/values.yaml                             | 7 ++++++-
 .../neutron_understack/l3_router/__init__.py               | 0
 .../neutron_understack/l3_router/cisco_asa.py              | 5 +++++
 .../neutron_understack/l3_router/palo_alto.py              | 5 +++++
 .../neutron-understack/neutron_understack/l3_router/vrf.py | 5 +++++
 5 files changed, 21 insertions(+), 1 deletion(-)
 create mode 100644 python/neutron-understack/neutron_understack/l3_router/__init__.py
 create mode 100644 python/neutron-understack/neutron_understack/l3_router/cisco_asa.py
 create mode 100644 python/neutron-understack/neutron_understack/l3_router/palo_alto.py
 create mode 100644 python/neutron-understack/neutron_understack/l3_router/vrf.py

diff --git a/components/neutron/values.yaml b/components/neutron/values.yaml
index bbcad8a8a..dcd77ea9f 100644
--- a/components/neutron/values.yaml
+++ b/components/neutron/values.yaml
@@ -83,7 +83,12 @@ conf:
       # add 50 to the max MTU we want of 9000 to handle Neutron's -50 for VXLAN type
       global_physnet_mtu: 9050
     service_providers:
-      service_provider: "L3_ROUTER_NAT:cisco-asa:neutron_understack.l3_service_cisco_asa.CiscoAsa"
+      service_provider:
+        type: multistring
+        values:
+          - "L3_ROUTER_NAT:cisco-asa:neutron_understack.l3_router.cisco_asa.CiscoAsa"
+          - "L3_ROUTER_NAT:palo-alto:neutron_understack.l3_router.palo_alto.PaloAlto"
+          - "L3_ROUTER_NAT:vrf:neutron_understack.l3_router.vrf.Vrf"
     ovn:
       # the ovn-metadata-agent utilizes 'localport' on each hypervisor in OVS to work, since
       # we don't have an OVS that the baremetal nodes are plugged into we can't have this
diff --git a/python/neutron-understack/neutron_understack/l3_router/__init__.py b/python/neutron-understack/neutron_understack/l3_router/__init__.py
new file mode 100644
index 000000000..e69de29bb
diff --git a/python/neutron-understack/neutron_understack/l3_router/cisco_asa.py b/python/neutron-understack/neutron_understack/l3_router/cisco_asa.py
new file mode 100644
index 000000000..68dbab873
--- /dev/null
+++ b/python/neutron-understack/neutron_understack/l3_router/cisco_asa.py
@@ -0,0 +1,5 @@
+from neutron.services.ovn_l3.service_providers.user_defined import UserDefined
+
+
+class CiscoAsa(UserDefined):
+    pass
diff --git a/python/neutron-understack/neutron_understack/l3_router/palo_alto.py b/python/neutron-understack/neutron_understack/l3_router/palo_alto.py
new file mode 100644
index 000000000..34a4851b6
--- /dev/null
+++ b/python/neutron-understack/neutron_understack/l3_router/palo_alto.py
@@ -0,0 +1,5 @@
+from neutron.services.ovn_l3.service_providers.user_defined import UserDefined
+
+
+class PaloAlto(UserDefined):
+    pass
diff --git a/python/neutron-understack/neutron_understack/l3_router/vrf.py b/python/neutron-understack/neutron_understack/l3_router/vrf.py
new file mode 100644
index 000000000..54c0a9f1b
--- /dev/null
+++ b/python/neutron-understack/neutron_understack/l3_router/vrf.py
@@ -0,0 +1,5 @@
+from neutron.services.ovn_l3.service_providers.user_defined import UserDefined
+
+
+class Vrf(UserDefined):
+    pass