Add network case of update device of interface type

- VIRT-298342 - [update-device] live update interface with
different interface type - bridge/direct type

Signed-off-by: Haijiao Zhao <[email protected]>

libvirt/tests/cfg/virtual_network/update_device/update_iface_type_live.cfg

@@ -0,0 +1,14 @@
+- virtual_network.update_device.iface_type.live:
+    type = update_iface_type_live
+    host_iface =
+    start_vm = no
+    timeout = 240
+    variants:
+        - bridge_type:
+            iface_type = bridge
+            create_linux_br = yes
+            net_attrs = {'name': net_name, 'bridge': {'name': linux_br}, 'forward': {'mode': 'bridge'}}
+        - direct_type:
+            iface_type = direct
+            net_attrs = {'name': net_name, 'forward': {'mode': 'bridge'}, 'forward_interface': [{'dev': host_iface}]}
+    iface_attrs = {'model': 'virtio', 'type_name': 'network', 'source': {'network': net_name}, 'mac_address': mac}

libvirt/tests/src/virtual_network/update_device/update_iface_type_live.py

@@ -0,0 +1,97 @@
+import logging
+import re
+
+from virttest import utils_misc
+from virttest import utils_net
+from virttest import virsh
+from virttest.libvirt_xml import vm_xml
+from virttest.utils_libvirt import libvirt_network
+from virttest.utils_libvirt import libvirt_vmxml
+
+VIRSH_ARGS = {'ignore_status': False, 'debug': True}
+
+LOG = logging.getLogger('avocado.' + __name__)
+
+
+def run(test, params, env):
+    """
+    Test update-device for bridge or direct type interface
+    """
+    vm_name = params.get('main_vm')
+    vm = env.get_vm(vm_name)
+    rand_id = utils_misc.generate_random_string(3)
+    create_linux_br = 'yes' == params.get('create_linux_br', 'no')
+    linux_br = 'linux_br_' + rand_id
+    net_name = 'net_' + rand_id
+    mac = utils_net.generate_mac_address_simple()
+    iface_attrs = eval(params.get('iface_attrs', '{}'))
+    iface_type = params.get('iface_type')
+    host_iface = params.get('host_iface')
+    host_iface = host_iface if host_iface else utils_net.get_net_if(
+        state='UP')[0]
+    net_attrs = eval(params.get('net_attrs', '{}'))
+
+    vmxml = vm_xml.VMXML.new_from_inactive_dumpxml(vm_name)
+    bkxml = vmxml.copy()
+
+    try:
+        vmxml.del_device('interface', by_tag=True)
+        vmxml.sync()
+        LOG.debug(f'VMXML of {vm_name}:\n{virsh.dumpxml(vm_name).stdout_text}')
+
+        if create_linux_br:
+            LOG.debug(f'Create linux bridge: {linux_br}')
+            utils_net.create_linux_bridge_tmux(linux_br, host_iface)
+        libvirt_network.create_or_del_network(net_attrs)
+        LOG.debug(f'Network xml:\n'
+                  f'{virsh.net_dumpxml(net_attrs["name"]).stdout_text}')
+
+        vm.start()
+        session = vm.wait_for_serial_login()
+
+        iface = libvirt_vmxml.create_vm_device_by_type(
+            'interface', iface_attrs)
+        LOG.debug(f'Interface to attach:\n{iface}')
+
+        virsh.attach_device(vm_name, iface.xml, **VIRSH_ARGS)
+
+        vmxml = vm_xml.VMXML.new_from_dumpxml(vm_name)
+        iface_at = vmxml.get_devices('interface')[0]
+        LOG.debug(f'Interface xml after attached to vm:\n{iface_at}')
+        LOG.debug(f'Interface type after attached to vm:\n'
+                  f'{iface_at.type_name}')
+        if iface_at.type_name != iface_type:
+            test.fail(f'Interface type should change to {iface_type}')
+
+        LOG.debug('Update interface link state')
+        link_state = 'down'
+        iface.setup_attrs(**{'link_state': link_state})
+        LOG.debug(iface)
+
+        virsh.update_device(vm_name, iface.xml, **VIRSH_ARGS)
+        vmxml = vm_xml.VMXML.new_from_dumpxml(vm_name)
+        iface_update = vmxml.get_devices('interface')[0]
+        LOG.debug(f'Link state of interface after update: '
+                  f'{iface_update.link_state}')
+        if iface_update.link_state != link_state:
+            test.fail(f'Link state of interface after update should be '
+                      f'{link_state}')
+
+        vm_iface = utils_net.get_linux_ifname(session, mac)
+        LOG.debug(f'Interface inside vm: {vm_iface}')
+
+        LOG.debug('Check link state inside vm via ethtool command')
+        eth_output = session.cmd_output(f'ethtool {vm_iface}')
+        LOG.debug(f'ethtool output:\s{eth_output}')
+        if re.search('Link\sdetected:\sno', eth_output) is None:
+            test.fail('ethtool output not correct, should contain'
+                      '"Link detected: no"')
+        session.close()
+
+    finally:
+        bkxml.sync()
+        if net_attrs:
+            libvirt_network.create_or_del_network(net_attrs, is_del=True)
+        if create_linux_br:
+            LOG.debug(f'Delete linux bridge: {linux_br}')
+            utils_net.delete_linux_bridge_tmux(linux_br, host_iface)