Potential "list index out of range" in case no IP is assigned

[jbemmel]

nuage-openstack-neutron/nuage_neutron/plugins/sriov/trunk_driver.py

Line 175 in e356c01

subnet_id = port['fixed_ips'][0]['subnet_id']

2020-05-27 17:38:24.178 54 CRITICAL nuage_neutron.plugins.sriov.trunk_driver [req-d143dc8f-25cf-4940-b0f3-3e631287047f 1885d187645f46c38f5cec0078052ea1 83b31028592b48169af26bc7f6820baa - default default] list index out of range: IndexError: list index out of range
2020-05-27 17:38:24.178 54 ERROR nuage_neutron.plugins.sriov.trunk_driver Traceback (most recent call last):
2020-05-27 17:38:24.178 54 ERROR nuage_neutron.plugins.sriov.trunk_driver File "/usr/lib/python2.7/site-packages/nuage_neutron/plugins/sriov/trunk_driver.py", line 375, in trunk_event
2020-05-27 17:38:24.178 54 ERROR nuage_neutron.plugins.sriov.trunk_driver self.trunk_pre_create(payload.context, payload.current_trunk)
2020-05-27 17:38:24.178 54 ERROR nuage_neutron.plugins.sriov.trunk_driver File "/usr/lib/python2.7/site-packages/nuage_neutron/plugins/sriov/trunk_driver.py", line 352, in trunk_pre_create
2020-05-27 17:38:24.178 54 ERROR nuage_neutron.plugins.sriov.trunk_driver self.subports_pre_create(context, trunk, trunk.sub_ports)
2020-05-27 17:38:24.178 54 ERROR nuage_neutron.plugins.sriov.trunk_driver File "/usr/lib/python2.7/site-packages/nuage_neutron/plugins/sriov/trunk_driver.py", line 345, in subports_pre_create
2020-05-27 17:38:24.178 54 ERROR nuage_neutron.plugins.sriov.trunk_driver trunk_subports = self._validate_subports_vlan(context, trunk)
2020-05-27 17:38:24.178 54 ERROR nuage_neutron.plugins.sriov.trunk_driver File "/usr/lib/python2.7/site-packages/nuage_neutron/plugins/sriov/trunk_driver.py", line 173, in _validate_subports_vlan
2020-05-27 17:38:24.178 54 ERROR nuage_neutron.plugins.sriov.trunk_driver subnet_id = port['fixed_ips'][0]['subnet_id']
2020-05-27 17:38:24.178 54 ERROR nuage_neutron.plugins.sriov.trunk_driver IndexError: list index out of range
2020-05-27 17:38:24.178 54 ERROR nuage_neutron.plugins.sriov.trunk_driver

[jbemmel]

Happens when a trunk subport is created through Heat:

port1_vlan1_subport:

            type: OS::Neutron::Port

            properties:

              # name: port1-sub1

              network_id: { get_resource: vlan1_network }

              replacement_policy: "AUTO"

              binding:vnic_type: "direct" # Must be same as parent

              port_security_enabled: {{ checkbox(0) }}

              # NOTE Reuse parent port's MAC address on all subports.

              mac_address: { get_attr: [port1_parent_port, mac_address] }

In this case, the 'ip_allocation' property ends up as 'deferred' (as there was no 'allocation_pools' defined for the network/subnet)