DPDK: add netvsc rescind tests

lisa/microsoft/testsuites/dpdk/common.py

@@ -1,6 +1,7 @@
 # Copyright (c) Microsoft Corporation.
 # Licensed under the MIT license.
 
+from enum import Enum
 from pathlib import PurePath
 from typing import Any, Callable, Dict, List, Optional, Sequence, Type, Union
 from urllib.parse import urlparse
@@ -444,3 +445,19 @@ def update_kernel_from_repo(node: Node) -> None:
         node.reboot()
     else:
         node.log.debug(f"Kernel update package '{package}' was not found.")
+
+
+class Pmd(str, Enum):
+    # enum for selecting which poll mode (usermode) driver to use.
+    # https://learn.microsoft.com/en-us/azure/virtual-network/setup-dpdk
+    # each has slight differences covered in their docs.
+    # [vdev_]netvsc and mana are maintained by msft.
+    # failsafe is a more general driver that can allow users to configure
+    # their own failover scenarios. not maintained by msft though.
+    #
+    # librte_net_failsafe
+    # https://doc.dpdk.org/guides/nics/fail_safe.html
+    FAILSAFE = "failsafe"
+    # librte_net_netvsc
+    # https://doc.dpdk.org/guides/nics/netvsc.html
+    NETVSC = "netvsc"

lisa/microsoft/testsuites/dpdk/dpdkperf.py

@@ -1,7 +1,7 @@
 from typing import Any, Dict, Tuple
 
 from assertpy import assert_that
-from microsoft.testsuites.dpdk.common import force_dpdk_default_source
+from microsoft.testsuites.dpdk.common import Pmd, force_dpdk_default_source
 from microsoft.testsuites.dpdk.dpdkutil import (
     DpdkTestResources,
     SkippedException,
@@ -64,7 +64,7 @@ def perf_dpdk_send_only_failsafe_pmd(
         variables: Dict[str, Any],
     ) -> None:
         sender_kit = verify_dpdk_build(
-            node, log, variables, "failsafe", HugePageSize.HUGE_2MB, result=result
+            node, log, variables, Pmd.FAILSAFE, HugePageSize.HUGE_2MB, result=result
         )
         sender_fields: Dict[str, Any] = {}
         test_case_name = result.runtime_data.metadata.name
@@ -110,7 +110,7 @@ def perf_dpdk_send_only_netvsc_pmd(
         variables: Dict[str, Any],
     ) -> None:
         sender_kit = verify_dpdk_build(
-            node, log, variables, "netvsc", HugePageSize.HUGE_2MB, result=result
+            node, log, variables, Pmd.NETVSC, HugePageSize.HUGE_2MB, result=result
         )
         sender_fields: Dict[str, Any] = {}
         test_case_name = result.runtime_data.metadata.name
@@ -154,7 +154,7 @@ def perf_dpdk_minimal_failsafe_pmd(
         log: Logger,
         variables: Dict[str, Any],
     ) -> None:
-        self._run_dpdk_perf_test("failsafe", result, log, variables)
+        self._run_dpdk_perf_test(Pmd.FAILSAFE, result, log, variables)
 
     @TestCaseMetadata(
         description="""
@@ -175,7 +175,7 @@ def perf_dpdk_minimal_netvsc_pmd(
         log: Logger,
         variables: Dict[str, Any],
     ) -> None:
-        self._run_dpdk_perf_test("netvsc", result, log, variables)
+        self._run_dpdk_perf_test(Pmd.NETVSC, result, log, variables)
 
     @TestCaseMetadata(
         description="""
@@ -198,7 +198,7 @@ def perf_dpdk_multi_queue_failsafe_pmd(
         variables: Dict[str, Any],
     ) -> None:
         self._run_dpdk_perf_test(
-            "failsafe",
+            Pmd.FAILSAFE,
             result,
             log,
             variables,
@@ -225,7 +225,7 @@ def perf_dpdk_multi_queue_netvsc_pmd(
         variables: Dict[str, Any],
     ) -> None:
         self._run_dpdk_perf_test(
-            "netvsc",
+            Pmd.NETVSC,
             result,
             log,
             variables,
@@ -262,13 +262,13 @@ def perf_dpdk_l3fwd_ntttcp_tcp(
             log,
             variables,
             HugePageSize.HUGE_2MB,
-            pmd="netvsc",
+            pmd=Pmd.NETVSC,
             is_perf_test=True,
         )
 
     def _run_dpdk_perf_test(
         self,
-        pmd: str,
+        pmd: Pmd,
         test_result: TestResult,
         log: Logger,
         variables: Dict[str, Any],