e2e: topomgr: add option to specify the SRIOV conf

We cannot anticipate all the possible configurations
needed by the SRIOV device plugin: there is too much variety.

Hence, we need to allow the test environment to supply
a host-specific ConfigMap to properly configure the device
plugin and avoid false negatives.

We still provide a the default config map as fallback and reference.

Signed-off-by: Francesco Romani <fromani@redhat.com>

test/e2e/framework/test_context.go

@@ -167,6 +167,9 @@ type TestContextType struct {
 
 	// ProgressReportURL is the URL which progress updates will be posted to as tests complete. If empty, no updates are sent.
 	ProgressReportURL string
+
+	// SriovdpConfigMapFile is the path to the ConfigMap to configure the SRIOV device plugin on this host.
+	SriovdpConfigMapFile string
 }
 
 // NodeKillerConfig describes configuration of NodeKiller -- a utility to

test/e2e_node/e2e_node_suite_test.go

@@ -80,6 +80,7 @@ func registerNodeFlags(flags *flag.FlagSet) {
 	flags.StringVar(&framework.TestContext.ImageDescription, "image-description", "", "The description of the image which the test will be running on.")
 	flags.StringVar(&framework.TestContext.SystemSpecName, "system-spec-name", "", "The name of the system spec (e.g., gke) that's used in the node e2e test. The system specs are in test/e2e_node/system/specs/. This is used by the test framework to determine which tests to run for validating the system requirements.")
 	flags.Var(cliflag.NewMapStringString(&framework.TestContext.ExtraEnvs), "extra-envs", "The extra environment variables needed for node e2e tests. Format: a list of key=value pairs, e.g., env1=val1,env2=val2")
+	flags.StringVar(&framework.TestContext.SriovdpConfigMapFile, "sriovdp-configmap-file", "", "The name of the SRIOV device plugin Config Map to load.")
 }
 
 func init() {

test/e2e_node/testing-manifests/sriovdp-cm.yaml

@@ -10,8 +10,8 @@ data:
                 "resourceName": "intel_sriov_netdevice",
                 "selectors": {
                     "vendors": ["8086"],
-                    "devices": ["154c", "10ed", "1521"],
+                    "devices": ["154c", "10ed"],
-                    "drivers": ["i40evf", "ixgbevf", "igb"]
+                    "drivers": ["i40evf", "ixgbevf"]
                 }
             },
             {

test/e2e_node/topology_manager_test.go

@@ -19,6 +19,7 @@ package e2enode
 import (
 	"context"
 	"fmt"
+	"io/ioutil"
 	"os/exec"
 	"regexp"
 	"strconv"
@@ -491,9 +492,21 @@ func runTopologyManagerNodeAlignmentSinglePodTest(f *framework.Framework, sriovR
 }
 
 func runTopologyManagerNodeAlignmentSuiteTests(f *framework.Framework, numaNodes int) {
+	cmData := testfiles.ReadOrDie(SRIOVDevicePluginCMYAML)
 	var err error
 
-	configMap := readConfigMapV1OrDie(testfiles.ReadOrDie(SRIOVDevicePluginCMYAML))
+	// the SRIOVDP configuration is hw-dependent, so we allow per-test-host customization.
+	framework.Logf("host-local SRIOV Device Plugin Config Map %q", framework.TestContext.SriovdpConfigMapFile)
+	if framework.TestContext.SriovdpConfigMapFile != "" {
+		cmData, err = ioutil.ReadFile(framework.TestContext.SriovdpConfigMapFile)
+		if err != nil {
+			framework.Failf("unable to load the SRIOV Device Plugin ConfigMap: %v", err)
+		}
+	} else {
+		framework.Logf("Using built-in SRIOV Device Plugin Config Map")
+	}
+
+	configMap := readConfigMapV1OrDie(cmData)
 	ginkgo.By(fmt.Sprintf("Creating configMap %v/%v", metav1.NamespaceSystem, configMap.Name))
 	if _, err = f.ClientSet.CoreV1().ConfigMaps(metav1.NamespaceSystem).Create(context.TODO(), configMap, metav1.CreateOptions{}); err != nil {
 		framework.Failf("unable to create test configMap %s: %v", configMap.Name, err)