Add option in toolkit container to enable CDI in runtime

cmd/nvidia-ctk-installer/container/container.go

@@ -36,8 +36,10 @@ const (
 
 // Options defines the shared options for the CLIs to configure containers runtimes.
 type Options struct {
-	Config        string
-	Socket        string
+	Config string
+	Socket string
+	// EnabledCDI indicates whether CDI should be enabled.
+	EnableCDI     bool
 	RuntimeName   string
 	RuntimeDir    string
 	SetAsDefault  bool
@@ -111,6 +113,10 @@ func (o Options) UpdateConfig(cfg engine.Interface) error {
 		}
 	}
 
+	if o.EnableCDI {
+		cfg.EnableCDI()
+	}
+
 	return nil
 }
 

cmd/nvidia-ctk-installer/container/runtime/containerd/config_v1_test.go

@@ -410,6 +410,51 @@ func TestUpdateV1ConfigWithRuncPresent(t *testing.T) {
 	}
 }
 
+func TestUpdateV1EnableCDI(t *testing.T) {
+	logger, _ := testlog.NewNullLogger()
+	const runtimeDir = "/test/runtime/dir"
+
+	testCases := []struct {
+		enableCDI              bool
+		expectedEnableCDIValue interface{}
+	}{
+		{},
+		{
+			enableCDI:              false,
+			expectedEnableCDIValue: nil,
+		},
+		{
+			enableCDI:              true,
+			expectedEnableCDIValue: true,
+		},
+	}
+
+	for _, tc := range testCases {
+		t.Run(fmt.Sprintf("%v", tc.enableCDI), func(t *testing.T) {
+			o := &container.Options{
+				EnableCDI:   tc.enableCDI,
+				RuntimeName: "nvidia",
+				RuntimeDir:  runtimeDir,
+			}
+
+			cfg, err := toml.Empty.Load()
+			require.NoError(t, err)
+
+			v1 := &containerd.ConfigV1{
+				Logger:      logger,
+				Tree:        cfg,
+				RuntimeType: runtimeType,
+			}
+
+			err = o.UpdateConfig(v1)
+			require.NoError(t, err)
+
+			enableCDIValue := v1.GetPath([]string{"plugins", "cri", "containerd", "enable_cdi"})
+			require.EqualValues(t, tc.expectedEnableCDIValue, enableCDIValue)
+		})
+	}
+}
+
 func TestRevertV1Config(t *testing.T) {
 	logger, _ := testlog.NewNullLogger()
 	testCases := []struct {

cmd/nvidia-ctk-installer/container/runtime/containerd/config_v2_test.go

@@ -366,6 +366,53 @@ func TestUpdateV2ConfigWithRuncPresent(t *testing.T) {
 	}
 }
 
+func TestUpdateV2ConfigEnableCDI(t *testing.T) {
+	logger, _ := testlog.NewNullLogger()
+	const runtimeDir = "/test/runtime/dir"
+
+	testCases := []struct {
+		enableCDI              bool
+		expectedEnableCDIValue interface{}
+	}{
+		{},
+		{
+			enableCDI:              false,
+			expectedEnableCDIValue: nil,
+		},
+		{
+			enableCDI:              true,
+			expectedEnableCDIValue: true,
+		},
+	}
+
+	for _, tc := range testCases {
+		t.Run(fmt.Sprintf("%v", tc.enableCDI), func(t *testing.T) {
+			o := &container.Options{
+				EnableCDI:    tc.enableCDI,
+				RuntimeName:  "nvidia",
+				RuntimeDir:   runtimeDir,
+				SetAsDefault: false,
+			}
+
+			cfg, err := toml.LoadMap(map[string]interface{}{})
+			require.NoError(t, err)
+
+			v2 := &containerd.Config{
+				Logger:               logger,
+				Tree:                 cfg,
+				RuntimeType:          runtimeType,
+				CRIRuntimePluginName: "io.containerd.grpc.v1.cri",
+			}
+
+			err = o.UpdateConfig(v2)
+			require.NoError(t, err)
+
+			enableCDIValue := cfg.GetPath([]string{"plugins", "io.containerd.grpc.v1.cri", "enable_cdi"})
+			require.EqualValues(t, tc.expectedEnableCDIValue, enableCDIValue)
+		})
+	}
+}
+
 func TestRevertV2Config(t *testing.T) {
 	logger, _ := testlog.NewNullLogger()
 

cmd/nvidia-ctk-installer/container/runtime/runtime.go

@@ -66,6 +66,12 @@ func Flags(opts *Options) []cli.Flag {
 			Destination: &opts.RestartMode,
 			EnvVars:     []string{"RUNTIME_RESTART_MODE"},
 		},
+		&cli.BoolFlag{
+			Name:        "enable-cdi-in-runtime",
+			Usage:       "Enable CDI in the configured runt	ime",
+			Destination: &opts.EnableCDI,
+			EnvVars:     []string{"RUNTIME_ENABLE_CDI"},
+		},
 		&cli.StringFlag{
 			Name:        "host-root",
 			Usage:       "Specify the path to the host root to be used when restarting the runtime using systemd",