Support MTU representation in NetworkStatus

Signed-off-by: Sebastian Sch <sebassch@gmail.com>

go.mod

@@ -3,13 +3,11 @@ module github.com/k8snetworkplumbingwg/network-attachment-definition-client
 go 1.21
 
 require (
-	github.com/containernetworking/cni v1.0.1
-	github.com/emicklei/go-restful v2.16.0+incompatible // indirect
+	github.com/containernetworking/cni v1.2.0-rc1
 	github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b
-	github.com/googleapis/gnostic v0.5.5 // indirect
 	github.com/onsi/ginkgo v1.16.5
-	github.com/onsi/gomega v1.29.0
-	golang.org/x/tools v0.12.0 // indirect
+	github.com/onsi/gomega v1.30.0
+	golang.org/x/tools v0.14.0 // indirect
 	k8s.io/api v0.29.0
 	k8s.io/apimachinery v0.29.0
 	k8s.io/client-go v0.29.0
@@ -18,8 +16,7 @@ require (
 )
 
 require (
-	github.com/PuerkitoBio/purell v1.1.1 // indirect
-	github.com/PuerkitoBio/urlesc v0.0.0-20170810143723-de5bf2ad4578 // indirect
+	github.com/Masterminds/semver/v3 v3.2.1 // indirect
 	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/emicklei/go-restful/v3 v3.11.0 // indirect
 	github.com/evanphx/json-patch v4.12.0+incompatible // indirect
@@ -44,14 +41,13 @@ require (
 	github.com/nxadm/tail v1.4.8 // indirect
 	github.com/pkg/errors v0.9.1 // indirect
 	github.com/spf13/pflag v1.0.5 // indirect
-	golang.org/x/mod v0.12.0 // indirect
+	golang.org/x/mod v0.13.0 // indirect
 	golang.org/x/net v0.17.0 // indirect
 	golang.org/x/oauth2 v0.10.0 // indirect
-	golang.org/x/sys v0.13.0 // indirect
+	golang.org/x/sys v0.14.0 // indirect
 	golang.org/x/term v0.13.0 // indirect
 	golang.org/x/text v0.13.0 // indirect
 	golang.org/x/time v0.3.0 // indirect
-	golang.org/x/xerrors v0.0.0-20220907171357-04be3eba64a2 // indirect
 	google.golang.org/appengine v1.6.7 // indirect
 	google.golang.org/protobuf v1.31.0 // indirect
 	gopkg.in/inf.v0 v0.9.1 // indirect

pkg/apis/k8s.cni.cncf.io/v1/types.go

@@ -107,6 +107,7 @@ type NetworkStatus struct {
 	Interface  string      `json:"interface,omitempty"`
 	IPs        []string    `json:"ips,omitempty"`
 	Mac        string      `json:"mac,omitempty"`
+	Mtu        int         `json:"mtu,omitempty"`
 	Default    bool        `json:"default,omitempty"`
 	DNS        DNS         `json:"dns,omitempty"`
 	DeviceInfo *DeviceInfo `json:"device-info,omitempty"`

pkg/utils/net-attach-def.go

@@ -139,6 +139,7 @@ func CreateNetworkStatus(r cnitypes.Result, networkName string, defaultNetwork b
 		if ifs.Sandbox != "" {
 			netStatus.Interface = ifs.Name
 			netStatus.Mac = ifs.Mac
+			netStatus.Mtu = ifs.Mtu
 		}
 	}
 

pkg/utils/net-attach-def_test.go

@@ -77,6 +77,7 @@ var _ = Describe("Netwok Attachment Definition manipulations", func() {
 				Interface: "eth0",
 				IPs:       []string{"10.244.1.2"},
 				Mac:       "92:79:27:01:7c:ce",
+				Mtu:       1500,
 			},
 			{
 				Name:      "test-net-attach-def-1",
@@ -112,6 +113,7 @@ var _ = Describe("Netwok Attachment Definition manipulations", func() {
 						Name:    "net1",
 						Mac:     "92:79:27:01:7c:cf",
 						Sandbox: "/proc/1123/ns/net",
+						Mtu:     9000,
 					},
 				},
 				IPs: []*cni100.IPConfig{
@@ -131,6 +133,7 @@ var _ = Describe("Netwok Attachment Definition manipulations", func() {
 		It("create network status from cni result", func() {
 			Expect(networkStatus.Name).To(Equal("test-net-attach-def"))
 			Expect(networkStatus.Interface).To(Equal("net1"))
+			Expect(networkStatus.Mtu).To(Equal(9000))
 			Expect(networkStatus.Mac).To(Equal("92:79:27:01:7c:cf"))
 			Expect(networkStatus.IPs).To(Equal([]string{"1.1.1.3", "2001::1"}))
 		})