def unplug(self, vif):
"""Unplug Contrail's network port
Unbind the vif from a Contrail virtual port.
"""
dev = vif.devname
cmd_args = "--oper=delete --uuid=%s" % vif.id
processutils.execute("vrouter-port-control", cmd_args, run_as_root=True)
linux_net.delete_net_dev(dev)
def delete_net_dev(dev):
"""Delete a network device only if it exists."""
if device_exists(dev):
try:
processutils.execute('ip', 'link', 'delete', dev,
check_exit_code=[0, 2, 254],
run_as_root=True)
LOG.debug("Net device removed: '%s'", dev)
except processutils.ProcessExecutionError:
with excutils.save_and_reraise_exception():
LOG.error(_LE("Failed removing net device: '%s'"), dev)
def plug(self, instance, vif):
"""Plug into Contrail's network port
Bind the vif to a Contrail virtual port.
"""
dev = vif.devname
ip_addr = "0.0.0.0"
ip6_addr = None
subnets = vif.network.subnets
for subnet in subnets:
if not subnet.ips:
continue
ips = subnet.ips[0]
if not ips.address:
continue
if ips.version == 4:
if ips.address is not None:
ip_addr = ips.address
if ips.version == 6:
if ips.address is not None:
ip6_addr = ips.address
ptype = "NovaVMPort"
if self.config.get("libvirt_virt_type") == "lxc":
ptype = "NameSpacePort"
cmd_args = (
"--oper=add --uuid=%s --instance_uuid=%s --vn_uuid=%s "
"--vm_project_uuid=%s --ip_address=%s --ipv6_address=%s"
" --vm_name=%s --mac=%s --tap_name=%s --port_type=%s "
"--tx_vlan_id=%d --rx_vlan_id=%d"
% (
vif.id,
instance.uuid,
vif.network.id,
instance.project_id,
ip_addr,
ip6_addr,
instance.display_name,
vif.address,
dev,
ptype,
-1,
-1,
)
)
linux_net.create_tap_dev(dev)
processutils.execute("vrouter-port-control", cmd_args, run_as_root=True)
def create_tap_dev(dev, mac_address=None):
if not device_exists(dev):
try:
# First, try with 'ip'
processutils.execute('ip', 'tuntap', 'add', dev, 'mode',
'tap', check_exit_code=[0, 2, 254],
run_as_root=True)
except processutils.ProcessExecutionError:
# Second option: tunctl
processutils.execute('tunctl', '-b', '-t', dev,
run_as_root=True)
if mac_address:
processutils.execute('ip', 'link', 'set', dev, 'address', mac_address,
check_exit_code=[0, 2, 254],
run_as_root=True)
processutils.execute('ip', 'link', 'set', dev, 'up',
check_exit_code=[0, 2, 254],
run_as_root=True)
