Support CDI devices in --device flag

Signed-off-by: Evan Lezar <elezar@nvidia.com>

Author: elezar

cli/command/container/opts.go

@@ -13,6 +13,7 @@ import (
 	"strings"
 	"time"
 
+	cdi "github.com/container-orchestrated-devices/container-device-interface/pkg/parser"
 	"github.com/docker/cli/cli/compose/loader"
 	"github.com/docker/cli/opts"
 	"github.com/docker/docker/api/types/container"
@@ -449,12 +450,17 @@ func parse(flags *pflag.FlagSet, copts *containerOptions, serverOS string) (*con
 	// parsing flags, we haven't yet sent a _ping to the daemon to determine
 	// what operating system it is.
 	deviceMappings := []container.DeviceMapping{}
+	var cdiDeviceNames []string
 	for _, device := range copts.devices.GetAll() {
 		var (
 			validated     string
 			deviceMapping container.DeviceMapping
 			err           error
 		)
+		if cdi.IsQualifiedName(device) {
+			cdiDeviceNames = append(cdiDeviceNames, device)
+			continue
+		}
 		validated, err = validateDevice(device, serverOS)
 		if err != nil {
 			return nil, err
@@ -559,6 +565,15 @@ func parse(flags *pflag.FlagSet, copts *containerOptions, serverOS string) (*con
 		}
 	}
 
+	deviceRequests := copts.gpus.Value()
+	if len(cdiDeviceNames) > 0 {
+		cdiDeviceRequest := container.DeviceRequest{
+			Driver:    "cdi",
+			DeviceIDs: cdiDeviceNames,
+		}
+		deviceRequests = append(deviceRequests, cdiDeviceRequest)
+	}
+
 	resources := container.Resources{
 		CgroupParent:         copts.cgroupParent,
 		Memory:               copts.memory.Value(),
@@ -589,7 +604,7 @@ func parse(flags *pflag.FlagSet, copts *containerOptions, serverOS string) (*con
 		Ulimits:              copts.ulimits.GetList(),
 		DeviceCgroupRules:    copts.deviceCgroupRules.GetAll(),
 		Devices:              deviceMappings,
-		DeviceRequests:       copts.gpus.Value(),
+		DeviceRequests:       deviceRequests,
 	}
 
 	config := &container.Config{

cli/command/container/opts_test.go

@@ -417,39 +417,91 @@ func TestParseWithExpose(t *testing.T) {
 
 func TestParseDevice(t *testing.T) {
 	skip.If(t, runtime.GOOS != "linux") // Windows and macOS validate server-side
-	valids := map[string]container.DeviceMapping{
-		"/dev/snd": {
-			PathOnHost:        "/dev/snd",
-			PathInContainer:   "/dev/snd",
-			CgroupPermissions: "rwm",
-		},
-		"/dev/snd:rw": {
-			PathOnHost:        "/dev/snd",
-			PathInContainer:   "/dev/snd",
-			CgroupPermissions: "rw",
-		},
-		"/dev/snd:/something": {
-			PathOnHost:        "/dev/snd",
-			PathInContainer:   "/something",
-			CgroupPermissions: "rwm",
-		},
-		"/dev/snd:/something:rw": {
-			PathOnHost:        "/dev/snd",
-			PathInContainer:   "/something",
-			CgroupPermissions: "rw",
-		},
-	}
-	for device, deviceMapping := range valids {
-		_, hostconfig, _, err := parseRun([]string{fmt.Sprintf("--device=%v", device), "img", "cmd"})
-		if err != nil {
-			t.Fatal(err)
-		}
-		if len(hostconfig.Devices) != 1 {
-			t.Fatalf("Expected 1 devices, got %v", hostconfig.Devices)
-		}
-		if hostconfig.Devices[0] != deviceMapping {
-			t.Fatalf("Expected %v, got %v", deviceMapping, hostconfig.Devices)
-		}
+	testCases := []struct {
+		devices        []string
+		deviceMapping  *container.DeviceMapping
+		deviceRequests []container.DeviceRequest
+	}{
+		{
+			devices: []string{"/dev/snd"},
+			deviceMapping: &container.DeviceMapping{
+				PathOnHost:        "/dev/snd",
+				PathInContainer:   "/dev/snd",
+				CgroupPermissions: "rwm",
+			},
+		},
+		{
+			devices: []string{"/dev/snd:rw"},
+			deviceMapping: &container.DeviceMapping{
+				PathOnHost:        "/dev/snd",
+				PathInContainer:   "/dev/snd",
+				CgroupPermissions: "rw",
+			},
+		},
+		{
+			devices: []string{"/dev/snd:/something"},
+			deviceMapping: &container.DeviceMapping{
+				PathOnHost:        "/dev/snd",
+				PathInContainer:   "/something",
+				CgroupPermissions: "rwm",
+			},
+		},
+		{
+			devices: []string{"/dev/snd:/something:rw"},
+			deviceMapping: &container.DeviceMapping{
+				PathOnHost:        "/dev/snd",
+				PathInContainer:   "/something",
+				CgroupPermissions: "rw",
+			},
+		},
+		{
+			devices:       []string{"vendor.com/class=name"},
+			deviceMapping: nil,
+			deviceRequests: []container.DeviceRequest{
+				{
+					Driver:    "cdi",
+					DeviceIDs: []string{"vendor.com/class=name"},
+				},
+			},
+		},
+		{
+			devices: []string{"vendor.com/class=name", "/dev/snd:/something:rw"},
+			deviceMapping: &container.DeviceMapping{
+				PathOnHost:        "/dev/snd",
+				PathInContainer:   "/something",
+				CgroupPermissions: "rw",
+			},
+			deviceRequests: []container.DeviceRequest{
+				{
+					Driver:    "cdi",
+					DeviceIDs: []string{"vendor.com/class=name"},
+				},
+			},
+		},
+	}
+
+	for _, tc := range testCases {
+		t.Run(fmt.Sprintf("%s", tc.devices), func(t *testing.T) {
+			var args []string
+			for _, d := range tc.devices {
+				args = append(args, fmt.Sprintf("--device=%v", d))
+			}
+			args = append(args, "img", "cmd")
+
+			_, hostconfig, _, err := parseRun(args)
+
+			assert.NilError(t, err)
+
+			if tc.deviceMapping != nil {
+				if assert.Check(t, is.Len(hostconfig.Devices, 1)) {
+					assert.Check(t, is.DeepEqual(*tc.deviceMapping, hostconfig.Devices[0]))
+				}
+			} else {
+				assert.Check(t, is.Len(hostconfig.Devices, 0))
+			}
+
+			assert.Check(t, is.DeepEqual(tc.deviceRequests, hostconfig.DeviceRequests))
+		})
 	}
 }