nxos_bgp_neighbor: Add bfd support (#56932)

* nxos_bgp_neighbor: Add bfd support

- Add support for bfd state in nxos_bgp_neighbor

- Feature Pull Request

- nxos_bgp_neighbor

- Tested on platforms: `N3K,N6K,N7K,N9K`

* bfd T/F now bfd enable/disable

* pep fix ws

lib/ansible/modules/network/nxos/nxos_bgp_neighbor.py

@@ -53,6 +53,13 @@ options:
   description:
     description:
       - Description of the neighbor.
+  bfd:
+    description:
+      - Enables/Disables BFD for a given neighbor.
+      - "Dependency: 'feature bfd'"
+    version_added: "2.9"
+    type: str
+    choices: ['enable', 'disable']
   connected_check:
     description:
       - Configure whether or not to check for directly connected peer.
@@ -154,6 +161,7 @@ EXAMPLES = '''
     neighbor: 192.0.2.3
     local_as: 20
     remote_as: 30
+    bfd: enable
     description: "just a description"
     update_source: Ethernet1/3
     state: present
@@ -188,6 +196,7 @@ BOOL_PARAMS = [
 ]
 PARAM_TO_COMMAND_KEYMAP = {
     'asn': 'router bgp',
+    'bfd': 'bfd',
     'capability_negotiation': 'dont-capability-negotiate',
     'connected_check': 'disable-connected-check',
     'description': 'description',
@@ -211,6 +220,7 @@ PARAM_TO_COMMAND_KEYMAP = {
     'vrf': 'vrf'
 }
 PARAM_TO_DEFAULT_KEYMAP = {
+    'bfd': 'disable',
     'shutdown': False,
     'dynamic_capability': True,
     'timers_keepalive': 60,
@@ -245,6 +255,8 @@ def get_value(arg, config):
             value = 'enable'
         elif has_command_val:
             value = has_command_val.group('value')
+    elif arg == 'bfd':
+        value = 'enable' if has_command else 'disable'
     else:
         value = ''
 
@@ -354,6 +366,9 @@ def state_present(module, existing, proposed, candidate):
                         proposed['timers_holdtime'])
                     if command not in commands:
                         commands.append(command)
+            elif key == 'bfd':
+                no_cmd = 'no ' if value == 'disable' else ''
+                commands.append(no_cmd + key)
             else:
                 command = '{0} {1}'.format(key, value)
                 commands.append(command)
@@ -389,6 +404,7 @@ def main():
         vrf=dict(required=False, type='str', default='default'),
         neighbor=dict(required=True, type='str'),
         description=dict(required=False, type='str'),
+        bfd=dict(required=False, type='str', choices=['enable', 'disable']),
         capability_negotiation=dict(required=False, type='bool'),
         connected_check=dict(required=False, type='bool'),
         dynamic_capability=dict(required=False, type='bool'),
@@ -442,7 +458,10 @@ def main():
         if key not in ['asn', 'vrf', 'neighbor', 'pwd_type']:
             if str(value).lower() == 'default':
                 value = PARAM_TO_DEFAULT_KEYMAP.get(key, 'default')
-            if existing.get(key) != value:
+            if key == 'bfd':
+                if existing.get('bfd', 'disable') != value:
+                    proposed[key] = value
+            elif existing.get(key) != value:
                 proposed[key] = value
 
     candidate = CustomNetworkConfig(indent=3)

test/integration/targets/nxos_bgp_neighbor/tests/common/sanity.yaml

@@ -15,32 +15,20 @@
 - set_fact: remove_private_asr="replace-as"
   when: not titanium
 
-- name: "Enable feature BGP"
+- name: "Setup: Disable features"
   nxos_feature:
-    feature: bgp
+    feature: "{{ item }}"
+    provider: "{{ connection }}"
+    state: disabled
+  loop: ['bgp', 'bfd']
+  ignore_errors: yes
+
+- name: "Setup: Enable features"
+  nxos_feature:
+    feature: "{{ item }}"
     provider: "{{ connection }}"
     state: enabled
-  ignore_errors: yes
-
-- name: "Setup"
-  nxos_bgp_neighbor: &removenp
-    asn: 65535
-    neighbor: 192.0.2.3
-    vrf: "{{ item }}"
-    provider: "{{ connection }}"
-    state: absent
-  with_items: "{{ vrfs }}"
-  ignore_errors: yes
-
-- name: "Setup"
-  nxos_bgp_neighbor: &remove
-    asn: 65535
-    neighbor: 192.0.2.3/32
-    vrf: "{{ item }}"
-    provider: "{{ connection }}"
-    state: absent
-  with_items: "{{ vrfs }}"
-  ignore_errors: yes
+  loop: ['bgp', 'bfd']
 
 - block:
   - name: "Configure BGP neighbor1"
@@ -116,7 +104,12 @@
   - assert: *false
 
   - name: "Remove BGP"
-    nxos_bgp_neighbor: *remove
+    nxos_bgp_neighbor: &remove
+      asn: 65535
+      neighbor: 192.0.2.3/32
+      vrf: "{{ item }}"
+      provider: "{{ connection }}"
+      state: absent
     with_items: "{{ vrfs }}"
     register: result
 
@@ -291,7 +284,12 @@
   - assert: *false
 
   - name: "Remove BGP"
-    nxos_bgp_neighbor: *removenp
+    nxos_bgp_neighbor: &removenp
+      asn: 65535
+      neighbor: 192.0.2.3
+      vrf: "{{ item }}"
+      provider: "{{ connection }}"
+      state: absent
     with_items: "{{ vrfs }}"
     register: result
 
@@ -304,17 +302,47 @@
 
   - assert: *false
 
-  rescue:
-  - name: "Cleanup BGP"
-    nxos_bgp_neighbor: *remove
-    with_items: "{{ vrfs }}"
-    ignore_errors: yes
+  - name: "Configure BFD enable"
+    nxos_bgp_neighbor: &bfd_enable
+      asn: 65535
+      neighbor: 192.168.1.1
+      bfd: enable
+      provider: "{{ connection }}"
+      state: present
+    register: result
+
+  - assert: *true
+
+  - name: Check BFD enable Idempotence
+    nxos_bgp_neighbor: *bfd_enable
+    register: result
+
+  - assert: *false
+
+  - name: Configure BFD disable Idempotence
+    nxos_bgp_neighbor: &bfd_disable
+      asn: 65535
+      neighbor: 192.168.1.1
+      bfd: disable
+      provider: "{{ connection }}"
+      state: present
+    register: result
+
+  - assert: *true
+
+  - name: Check BFD disable Idempotence
+    nxos_bgp_neighbor: *bfd_disable
+    register: result
+
+  - assert: *false
 
   always:
-  - name: "Disable feature bgp"
-    nxos_feature: &disable_bgp
-      feature: bgp
+  - name: "Teardown: Disable features"
+    nxos_feature:
+      feature: "{{ item }}"
       provider: "{{ connection }}"
       state: disabled
+    loop: ['bgp', 'bfd']
+    ignore_errors: yes
 
 - debug: msg="END connection={{ ansible_connection }} nxos_bgp_neighbor sanity test"

test/units/modules/network/nxos/fixtures/nxos_bgp/config.cfg

@@ -7,6 +7,9 @@ router bgp 65535
   vrf test2
     address-family ipv4 unicast
     timers bgp 1 10
+  neighbor 1.1.1.1
+  neighbor 1.1.1.2
+    bfd
   neighbor 3.3.3.4
     remove-private-as all
   neighbor 3.3.3.5

test/units/modules/network/nxos/test_nxos_bgp_neighbor.py

@@ -46,10 +46,32 @@ class TestNxosBgpNeighborModule(TestNxosModule):
         self.get_config.return_value = load_fixture('nxos_bgp', 'config.cfg')
         self.load_config.return_value = []
 
+    def test_nxos_bgp_neighbor_bfd_1(self):
+        # None (disable) -> enable
+        set_module_args(dict(asn=65535, neighbor='1.1.1.1', bfd='enable'))
+        self.execute_module(changed=True, commands=['router bgp 65535', 'neighbor 1.1.1.1', 'bfd'])
+
+        # enable -> enable (idempotence)
+        set_module_args(dict(asn=65535, neighbor='1.1.1.2', bfd='enable'))
+        self.execute_module(changed=False)
+
+    def test_nxos_bgp_neighbor_bfd_2(self):
+        # enable -> None (disable)
+        set_module_args(dict(asn=65535, neighbor='1.1.1.2', bfd='disable'))
+        self.execute_module(changed=True, commands=['router bgp 65535', 'neighbor 1.1.1.2', 'no bfd'])
+
+        # None (disable) -> disable (idempotence)
+        set_module_args(dict(asn=65535, neighbor='1.1.1.1', bfd='disable'))
+        self.execute_module(changed=False)
+
     def test_nxos_bgp_neighbor(self):
         set_module_args(dict(asn=65535, neighbor='192.0.2.3', description='some words'))
         self.execute_module(changed=True, commands=['router bgp 65535', 'neighbor 192.0.2.3', 'description some words'])
 
+    def test_nxos_bgp_neighbor_absent(self):
+        set_module_args(dict(asn=65535, neighbor='1.1.1.1', state='absent'))
+        self.execute_module(changed=True, commands=['router bgp 65535', 'no neighbor 1.1.1.1'])
+
     def test_nxos_bgp_neighbor_remove_private_as(self):
         set_module_args(dict(asn=65535, neighbor='3.3.3.4', remove_private_as='all'))
         self.execute_module(changed=False, commands=[])