[NSX-P] Disable/enable multicast on segment
When updating a segment, disable multicast if there is only a v6 subnet configured on it. Change-Id: Ia5043a9165e208570d566b6510fa1c35f0663cd2
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@ -1150,6 +1150,18 @@ class NsxPolicyPlugin(nsx_plugin_common.NsxPluginV3Base):
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dhcp_port = self._get_net_dhcp_port(context, net_id)
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return True if dhcp_port else False
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def _get_segment_subnets_versions(self, context, net_id):
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# Find networks DHCP enabled subnets
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versions = set()
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with db_api.CONTEXT_READER.using(context):
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network = self._get_network(context, net_id)
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for subnet in network.subnets:
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if(subnet.enable_dhcp and
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(subnet.ip_version == 4 or
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subnet.ipv6_address_mode != const.IPV6_SLAAC)):
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versions.add(subnet.ip_version)
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return versions
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def _get_segment_subnets(self, context, net_id, net_az=None,
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interface_subnets=None,
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deleted_dhcp_subnets=None):
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@ -1242,12 +1254,19 @@ class NsxPolicyPlugin(nsx_plugin_common.NsxPluginV3Base):
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# Update the DHCP server on the segment
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net_id = network['id']
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segment_id = self._get_network_nsx_segment_id(context, net_id)
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seg_subnets_ip_ver = self._get_segment_subnets_versions(
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context, net_id)
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seg_subnets = self._get_segment_subnets(context, net_id, net_az=az)
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dhcp_config = self._get_segment_dhcp_server_config(segment_id, az)
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# Multicast cannot be enabled on segments with v6 subnets only
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if len(seg_subnets_ip_ver) == 1 and seg_subnets_ip_ver.pop() == 6:
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multicast = False
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else:
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multicast = True
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# Update dhcp server config on the segment
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self.nsxpolicy.segment.update(
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segment_id=segment_id,
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multicast=multicast,
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dhcp_server_config_id=dhcp_config,
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subnets=seg_subnets)
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@ -1471,6 +1471,7 @@ class NsxPTestSubnets(common_v3.NsxV3TestSubnets,
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# verify backend calls
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seg_update.assert_called_once_with(
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dhcp_server_config_id=NSX_DHCP_PROFILE_ID,
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multicast=False,
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segment_id=subnet['subnet']['network_id'],
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subnets=[mock.ANY])
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