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Support advertised networks in bgp protocol (#34728)
Signed-off-by: Samer Deeb <samerd@mellanox.com>
This commit is contained in:
Samer Deeb
John R Barker
parent
fcf6da0a9d
commit
cb206abea3
4 changed files with 123 additions and 30 deletions
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@ -41,6 +41,9 @@ options:
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description:
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- Neighbor IP address.
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required: true
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networks:
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description:
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- List of advertised networks.
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state:
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description:
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- BGP state.
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@ -57,6 +60,8 @@ EXAMPLES = """
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- remote_as: 321
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neighbor: 10.3.3.4
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state: present
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networks:
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- 172.16.1.0/24
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"""
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RETURN = """
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@ -69,6 +74,7 @@ commands:
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- exit
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- router bgp 172 router-id 2.3.4.5 force
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- router bgp 172 neighbor 2.3.4.6 remote-as 173
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- router bgp 172 network 172.16.1.0 /24
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"""
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import re
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@ -80,10 +86,13 @@ from ansible.module_utils.network.mlnxos.mlnxos import BaseMlnxosModule
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class MlnxosBgpModule(BaseMlnxosModule):
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LOCAL_AS_REGEX = \
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r"BGP router identifier ([0-9\.]+), local AS number (\d+)"
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NEIGHBOR_REGEX = \
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r"^(\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3})\s+\d+\s+(\d+)"
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LOCAL_AS_REGEX = re.compile(r'^\s+router bgp\s+(\d+).*')
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ROUTER_ID_REGEX = re.compile(
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r'^\s+router bgp\s+(\d+).*router-id\s+(\S+)\s+.*')
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NEIGHBOR_REGEX = re.compile(
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r'^\s+router bgp\s+(\d+).*neighbor\s+(\S+)\s+remote\-as\s+(\S+).*')
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NETWORK_REGEX = re.compile(
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r'^\s+router bgp\s+(\d+).*network\s+(\S+)\s+(\S+).*')
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def init_module(self):
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""" initialize module
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@ -97,6 +106,7 @@ class MlnxosBgpModule(BaseMlnxosModule):
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router_id=dict(),
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neighbors=dict(type='list', elements='dict',
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options=neighbor_spec),
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networks=dict(type='list', elements='str'),
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state=dict(choices=['present', 'absent'], default='present'),
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)
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argument_spec = dict()
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@ -108,28 +118,47 @@ class MlnxosBgpModule(BaseMlnxosModule):
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def get_required_config(self):
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module_params = self._module.params
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bgp_params = {
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'as_number': module_params['as_number'],
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'router_id': module_params['router_id'],
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'state': module_params['state'],
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}
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neighbors = module_params['neighbors'] or []
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req_neighbors = bgp_params['neighbors'] = []
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req_neighbors = list()
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self._required_config = dict(
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as_number=module_params['as_number'],
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router_id=module_params['router_id'],
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state=module_params['state'],
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neighbors=req_neighbors,
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networks=module_params['networks'])
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neighbors = module_params['neighbors'] or list()
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for neighbor_data in neighbors:
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req_neighbors.append(
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(neighbor_data['neighbor'], neighbor_data['remote_as']))
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self.validate_param_values(bgp_params)
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self._required_config = bgp_params
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self.validate_param_values(self._required_config)
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def _set_bgp_config(self, bgp_config):
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match = re.search(self.LOCAL_AS_REGEX, bgp_config, re.M)
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if match:
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self._current_config['router_id'] = match.group(1)
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self._current_config['as_number'] = int(match.group(2))
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matches = re.findall(self.NEIGHBOR_REGEX, bgp_config, re.M) or []
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lines = bgp_config.split('\n')
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self._current_config['router_id'] = None
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self._current_config['as_number'] = None
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neighbors = self._current_config['neighbors'] = []
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for match in matches:
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neighbors.append((match[0], int(match[1])))
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networks = self._current_config['networks'] = []
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for line in lines:
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if line.startswith('#'):
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continue
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if not self._current_config['as_number']:
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match = self.LOCAL_AS_REGEX.match(line)
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if match:
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self._current_config['as_number'] = int(match.group(1))
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continue
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if not self._current_config['router_id']:
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match = self.ROUTER_ID_REGEX.match(line)
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if match:
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self._current_config['router_id'] = match.group(2)
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continue
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match = self.NEIGHBOR_REGEX.match(line)
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if match:
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neighbors.append((match.group(2), int(match.group(3))))
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continue
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match = self.NETWORK_REGEX.match(line)
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if match:
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network = match.group(2) + match.group(3)
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networks.append(network)
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continue
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def _get_bgp_summary(self):
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return get_bgp_summary(self._module)
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@ -162,7 +191,10 @@ class MlnxosBgpModule(BaseMlnxosModule):
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if req_router_id and req_router_id != curr_route_id or bgp_removed:
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self._commands.append('router bgp %d router-id %s force' %
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(as_number, req_router_id))
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self._generate_neighbors_cmds(as_number, bgp_removed)
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self._generate_networks_cmds(as_number, bgp_removed)
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def _generate_neighbors_cmds(self, as_number, bgp_removed):
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req_neighbors = self._required_config['neighbors']
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curr_neighbors = self._current_config.get('neighbors', [])
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if not bgp_removed:
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@ -180,6 +212,33 @@ class MlnxosBgpModule(BaseMlnxosModule):
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'router bgp %s neighbor %s remote-as %s' %
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(as_number, neighbor, remote_as))
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def _generate_networks_cmds(self, as_number, bgp_removed):
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req_networks = self._required_config['networks'] or []
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curr_networks = self._current_config.get('networks', [])
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if not bgp_removed:
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for network in curr_networks:
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if network not in req_networks:
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net_attrs = network.split('/')
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if len(net_attrs) != 2:
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self._module.fail_json(
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msg='Invalid network %s' % network)
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net_address, netmask = net_attrs
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cmd = 'router bgp %s no network %s /%s' % (
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as_number, net_address, netmask)
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self._commands.append(cmd)
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for network in req_networks:
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if bgp_removed or network not in curr_networks:
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net_attrs = network.split('/')
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if len(net_attrs) != 2:
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self._module.fail_json(
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msg='Invalid network %s' % network)
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net_address, netmask = net_attrs
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cmd = 'router bgp %s network %s /%s' % (
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as_number, net_address, netmask)
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self._commands.append(cmd)
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def _generate_no_bgp_cmds(self):
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as_number = self._required_config['as_number']
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curr_as_num = self._current_config.get('as_number')
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