Add options field to bond structure. (#38512)

This change allows users to pass bond options
alongside bond mode, in order to allow greater
flexibility for bond creation. Previously,
bond options were derived from bond mode, e.g.
"miimon" was set to 100 for mode 3 (load-balance),
however a user may want to use 200.

lib/ansible/modules/cloud/ovirt/ovirt_host_networks.py

@@ -1,7 +1,7 @@
 #!/usr/bin/python
 # -*- coding: utf-8 -*-
 #
-# Copyright (c) 2016 Red Hat, Inc.
+# Copyright (c) 2016, 2018 Red Hat, Inc.
 #
 # This file is part of Ansible
 #
@@ -47,6 +47,7 @@ options:
             - "Dictionary describing network bond:"
             - "C(name) - Bond name."
             - "C(mode) - Bonding mode."
+            - "C(options) - Bonding options."
             - "C(interfaces) - List of interfaces to create a bond."
     interface:
         description:
@@ -96,6 +97,19 @@ EXAMPLES = '''
         gateway: 1.2.3.4
         version: v4
 
+# Create bond on eth1 and eth2 interface, specifiyng both mode and miimon:
+- name: Bonds
+  ovirt_host_networks:
+    name: myhost
+    bond:
+      name: bond0
+      mode: 1
+      options:
+        miimon: 200
+      interfaces:
+        - eth1
+        - eth2
+
 # Remove bond0 bond from host interfaces:
 - ovirt_host_networks:
     state: absent
@@ -146,6 +160,7 @@ try:
 except ImportError:
     pass
 
+from ansible.module_utils import six
 from ansible.module_utils.basic import AnsibleModule
 from ansible.module_utils.ovirt import (
     BaseModule,
@@ -160,15 +175,17 @@ from ansible.module_utils.ovirt import (
 )
 
 
-def get_mode_type(mode_number):
-    """
-    Adaptive transmit load balancing (balance-tlb): mode=1 miimon=100
-    Dynamic link aggregation (802.3ad): mode=2 miimon=100
-    Load balance (balance-xor): mode=3 miimon=100
-    Active-Backup: mode=4 miimon=100 xmit_hash_policy=2
-    """
+def get_bond_options(mode, usr_opts):
+    MIIMON_100 = dict(miimon='100')
+    DEFAULT_MODE_OPTS = {
+        '1': MIIMON_100,
+        '2': MIIMON_100,
+        '3': MIIMON_100,
+        '4': dict(xmit_hash_policy='2', **MIIMON_100)
+    }
+
     options = []
-    if mode_number is None:
+    if mode is None:
         return options
 
     def get_type_name(mode_number):
@@ -176,32 +193,36 @@ def get_mode_type(mode_number):
         We need to maintain this type strings, for the __compare_options method,
         for easier comparision.
         """
-        return [
+        modes = [
             'Active-Backup',
             'Load balance (balance-xor)',
             None,
             'Dynamic link aggregation (802.3ad)',
-        ][mode_number]
+        ]
+        if (not 0 < mode_number <= len(modes) - 1):
+            return None
+        return modes[mode_number - 1]
 
     try:
-        mode_number = int(mode_number)
-        if mode_number >= 1 and mode_number <= 4:
-            if mode_number == 4:
-                options.append(otypes.Option(name='xmit_hash_policy', value='2'))
+        mode_number = int(mode)
+    except ValueError:
+        raise Exception('Bond mode must be a number.')
 
-            options.append(otypes.Option(name='miimon', value='100'))
     options.append(
         otypes.Option(
             name='mode',
-                    type=get_type_name(mode_number - 1),
+            type=get_type_name(mode_number),
             value=str(mode_number)
         )
     )
-        else:
-            options.append(otypes.Option(name='mode', value=str(mode_number)))
-    except ValueError:
-        raise Exception("Bond mode must be a number.")
 
+    opts_dict = DEFAULT_MODE_OPTS.get(mode, {})
+    opts_dict.update(**usr_opts)
+
+    options.extend(
+        [otypes.Option(name=opt, value=value)
+         for opt, value in six.iteritems(opts_dict)]
+    )
     return options
 
 
@@ -250,7 +271,7 @@ class HostNetworksModule(BaseModule):
 
         # Check if bond configuration should be updated:
         if bond:
-            update = self.__compare_options(get_mode_type(bond.get('mode')), getattr(nic.bonding, 'options', []))
+            update = self.__compare_options(get_bond_options(bond.get('mode'), bond.get('options')), getattr(nic.bonding, 'options', []))
             update = update or not equal(
                 sorted(bond.get('interfaces')) if bond.get('interfaces') else None,
                 sorted(get_link_name(self._connection, s) for s in nic.bonding.slaves)
@@ -369,7 +390,7 @@ def main():
                     otypes.HostNic(
                         name=bond.get('name'),
                         bonding=otypes.Bonding(
-                            options=get_mode_type(bond.get('mode')),
+                            options=get_bond_options(bond.get('mode'), bond.get('options')),
                             slaves=[
                                 otypes.HostNic(name=i) for i in bond.get('interfaces', [])
                             ],