DPDK l3fwd: allow passing a vnet_rg name

lisa/features/network_interface.py

@@ -38,6 +38,7 @@ def create_route_table(
         dest_hop: str,
         em_first_hop: str = "",
         next_hop_type: str = "",
+        resource_group: str = "",
     ) -> None:
         raise NotImplementedError
 

lisa/sut_orchestrator/azure/features.py

@@ -805,6 +805,7 @@ def create_route_table(
         dest_hop: str,
         em_first_hop: str = "",
         next_hop_type: str = "",
+        resource_group_name: str = "",
     ) -> None:
         # some quick checks that the subnet mask looks correct
         check_mask = self.__ipv4_mask_check_regex.match(subnet_mask)
@@ -813,6 +814,9 @@ def create_route_table(
         ).is_not_none()
 
         azure_platform: AzurePlatform = self._platform  # type: ignore
+        if not resource_group_name:
+            resource_group_name = self._resource_group_name
+
         # Step 1: create the route table, apply comes later.
         route_table = self._do_create_route_table(
             em_first_hop,
@@ -824,18 +828,17 @@ def create_route_table(
         )
         # Step 2: Get the virtual networks in the resource group.
         vnets: Dict[str, List[str]] = get_virtual_networks(
-            azure_platform, self._resource_group_name
+            azure_platform, resource_group_name
         )
         # get the subnets in the virtual network
         vnet_id = ""
         subnet_ids: List[str] = []
-        # assert_that(vnets.items()).described_as(
-        #     "There is more than one virtual network in this RG!"
-        #     " This RG is setup is unexpected, test cannot infer which VNET to use."
-        #     "Check if LISA has changed it's test setup logic, verify if the "
-        #     "DPDK test suite needs to be modified."
-        # ).is_length(1)
-
+        assert_that(vnets.items()).described_as(
+            "There is more than one virtual network in this RG!"
+            " This RG is setup is unexpected, test cannot infer which VNET to use."
+            "Check if LISA has changed it's test setup logic, verify if the "
+            "DPDK test suite needs to be modified."
+        ).is_length(1)
         # get the subnets for the virtual network in the test RG.
         # dict will have a single entry, lisa is only creating one vnet per test vm.
         vnet_items: List[Tuple[str, List[str]]] = list(vnets.items())

microsoft/testsuites/dpdk/dpdkutil.py

@@ -818,6 +818,8 @@ def verify_dpdk_l3fwd_ntttcp_tcp(
     run_in_parallel(
         [partial(__enable_ip_forwarding, node) for node in environment.nodes.list()]
     )
+    # check if LISA was told to use a specific resource group for the vnet
+    resource_group_name = variables.get("vnet_resource_group", "")
 
     # organize our nics by subnet.
     # NOTE: we're ignoring the primary interfaces on each VM since we need it
@@ -870,6 +872,7 @@ def verify_dpdk_l3fwd_ntttcp_tcp(
         em_first_hop=AZ_ROUTE_ALL_TRAFFIC,
         next_hop_type="VirtualAppliance",
         dest_hop=subnet_a_nics[forwarder].ip_addr,
+        resource_group=resource_group_name,
     )
     receiver.features[NetworkInterface].create_route_table(
         nic_name=subnet_b_nics[forwarder].name,
@@ -878,6 +881,7 @@ def verify_dpdk_l3fwd_ntttcp_tcp(
         em_first_hop=AZ_ROUTE_ALL_TRAFFIC,
         next_hop_type="VirtualAppliance",
         dest_hop=subnet_b_nics[forwarder].ip_addr,
+        resource_group=resource_group_name,
     )
 
     # Do actual DPDK initialization, compile l3fwd and apply setup to