add case for migrating guest while scp files

   xxxx-95968 - [virtual network][virtual-nic-device] Migrate guest while scp files
   xxxx-296253 - [virtual network][virtual-nic-device] migrate guest with iommu_platform=on and different memory size
Signed-off-by: nanli <nanli@redhat.com>

Author: nanli1

libvirt/tests/cfg/virtual_network/qemu/migrate_with_file_transfer.cfg

@@ -0,0 +1,73 @@
+- virtual_network.qemu_test.migrate_with_file_transfer:
+    type = migrate_with_file_transfer
+    create_vm_libvirt = "yes"
+    kill_vm_libvirt = "yes"
+    start_vm = "yes"
+    take_regular_screendumps = no
+    storage_type = 'nfs'
+    setup_local_nfs = 'yes'
+    disk_type = "file"
+    disk_source_protocol = "netfs"
+    nfs_mount_dir = "/var/lib/libvirt/migrate"
+    nfs_mount_options = "soft,timeo=50,retrans=3"
+    virsh_migrate_dest_state = running
+    virsh_migrate_options = "--live --p2p --verbose"
+    virsh_migrate_connect_uri = "qemu:///system"
+    migration_setup = "yes"
+    ssh_remote_auth = True
+    mnt_path_name = ${nfs_mount_dir}
+    nfs_server_ip = "${migrate_source_host}"
+    migrate_desturi_port = "22"
+    migrate_desturi_type = "ssh"
+    virsh_migrate_desturi = "qemu+ssh://${migrate_dest_host}/system"
+    login_timeout = "360"
+    migrate_speed = 15
+    guest_path = "/tmp/file"
+    file_size = "500"
+    transfer_timeout = "240"
+    migrate_vm_back = "no"
+    migration_type = "precopy"
+    virsh_migrate_extra = ""
+    action_during_mig = [{"func": "utils_test.run_file_transfer", "func_param": {"test": params.get('test'), "params": params.get('params'), "env": params.get('env')}}]
+    Windows:
+        guest_path = "C:\\tmpfile"
+    test_iommu = "yes"
+    variants:
+        - default:
+            # Regular test without IOMMU
+            test_iommu = "no"
+        - with_iommu:
+            x86_64, i386:
+                only q35
+                no WinXP WinVista Win7 Win8 Win8.1 Win2003
+                no Win2008 Win2008..r2 Win2012 Win2012..r2
+                iface_iommu_driver =  {'name':'vhost','iommu': 'on', 'ats': 'on', 'disable-legacy':'on', 'disable-modern':'off'}
+                    HostCpuVendor.intel:
+                    iommu_dict = {'model': 'intel', 'driver': {'intremap': 'on', 'caching_mode': 'on'}}
+                    RHEL.7.9:
+                        # For RHEL 7.9 compatibility - disable device IOTLB
+                        iommu_dict = {'model': 'intel', 'driver': {'intremap': 'on', 'caching_mode': 'on', 'device-iotlb': 'off'}}
+                Linux:
+                    enable_guest_iommu = "yes"
+            aarch64:
+                iommu_dict = {'model': 'smmuv3'}
+                iface_iommu_driver = {'name':'vhost','iommu': 'on', 'ats': 'on'}
+            s390x:
+                iface_iommu_driver = {'name':'vhost','iommu': 'on'}
+        - with_virtio_iommu:
+            required_qemu= [7.0.0,)
+            only Linux
+            only x86_64, aarch64
+            x86_64:
+                only q35
+            iommu_dict = {'model': 'virtio'}
+            iface_iommu_driver = {'name':'vhost','iommu': 'on'}
+    variants:
+        - default_mem:
+        - minimum_mem:
+            x86_64, aarch64, s390, s390x:
+                mem = 1536
+            ppc64, ppc64le:
+                mem = 3072
+            Windows:
+                mem = 4096

libvirt/tests/src/virtual_network/qemu/migrate_with_file_transfer.py

@@ -0,0 +1,103 @@
+# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+#
+#   Copyright Redhat
+#
+#   SPDX-License-Identifier: GPL-2.0
+#
+#   Author: Nannan Li <nanli@redhat.com>
+#
+# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+from virttest.libvirt_xml.vm_xml import VMXML
+from virttest.utils_libvirt import libvirt_virtio
+from virttest.utils_libvirt import libvirt_vmxml
+
+from provider.migration import base_steps
+from provider.virtual_network import network_base
+
+
+def run(test, params, env):
+    """
+    Test file transfer during migration
+
+    This test supports both regular migration with file transfer and
+    IOMMU-enabled scenarios for network interface testing.
+
+    IOMMU devices are configured using iommu_dict parameter which gets
+    processed by libvirt_virtio.add_iommu_dev().
+
+    :param test: test object
+    :param params: Dictionary with the test parameters
+    :param env: Dictionary with test environment.
+    """
+
+    def setup_test():
+        """
+        Setup IOMMU (Intel IOMMU or virtio-iommu direct plug only)
+        virt-install not support iommu added, so we add it from xml.
+        """
+        if test_iommu:
+            libvirt_vmxml.modify_vm_device(vmxml, 'interface', iface_attrs)
+            libvirt_virtio.add_iommu_dev(vm, iommu_dict)
+
+    def run_test():
+        """
+        Test file transfer during migration
+        """
+        if not vm.is_alive:
+            vm.start()
+        test.log.info("TEST_STEP 1: Guest xml is: %s\n", VMXML.new_from_dumpxml(vm_name))
+
+        test.log.info("TEST_STEP 2: Starting migration with file transfers")
+        migration_obj.setup_connection()
+        if not vm.is_alive():
+            vm.start()
+        migration_obj.run_migration()
+
+        test.log.info("TEST_STEP 3: Testing network connectivity on destination host")
+        backup_uri = vm.connect_uri
+        vm.connect_uri = dest_uri
+
+        session = vm.wait_for_login(timeout=login_timeout)
+        ips = {'outside_ip': outside_ip}
+        network_base.ping_check(params, ips, session)
+        session.close()
+        vm.connect_uri = backup_uri
+
+        if migrate_vm_back:
+            test.log.info("TEST_STEP 4: Migrating VM back to source host")
+            migration_obj.run_migration_back()
+
+    def teardown_test():
+        """
+        Cleanup test environment
+        """
+        migration_obj.cleanup_connection()
+
+    # Get main parameters
+    vm_name = params.get("main_vm")
+    vm = env.get_vm(vm_name)
+    iommu_dict = eval(params.get('iommu_dict', '{}'))
+    iface_iommu_driver = eval(params.get('iface_iommu_driver', '{}'))
+    dest_uri = params.get("virsh_migrate_desturi")
+    migrate_vm_back = params.get_boolean("migrate_vm_back", True)
+    login_timeout = params.get_numeric("login_timeout", "240")
+    outside_ip = params.get("outside_ip", "8.8.8.8")
+    test_iommu = params.get_boolean("test_iommu")
+
+    vmxml = VMXML.new_from_dumpxml(vm_name)
+    iface_attrs = vmxml.devices.by_device_tag('interface')[0].fetch_attrs()
+    iface_attrs.setdefault('driver', {})
+    iface_attrs['driver'] = {
+        'driver_attr': {**iface_attrs.get('driver', {}).get('driver_attr', {}), **iface_iommu_driver}}
+
+    # Add required objects to params for action_during_mig
+    params.update({"params": params, "test": test, "env": env})
+
+    migration_obj = base_steps.MigrationBase(test, vm, params)
+
+    try:
+        setup_test()
+        run_test()
+    finally:
+        teardown_test()

provider/migration/migration_base.py

@@ -12,6 +12,7 @@
 from virttest import utils_misc                      # pylint: disable=W0611
 from virttest import utils_libvirtd                  # pylint: disable=W0611
 from virttest import utils_conn
+from virttest import utils_test                      # pylint: disable=W0611
 
 from virttest.libvirt_xml import vm_xml
 from virttest.migration import MigrationTest