Merge pull request #11232 from lifupan/mtu

runtime: add the mtu support for updating routes

src/runtime/virtcontainers/network.go

@@ -310,6 +310,8 @@ func generateVCNetworkStructures(ctx context.Context, endpoints []Endpoint) ([]*
 			r.Scope = uint32(route.Scope)
 			r.Family = utils.ConvertAddressFamily((int32)(route.Family))
 			r.Flags = uint32(route.Flags)
+			r.Mtu = uint32(route.MTU)
+
 			routes = append(routes, &r)
 		}
 

src/runtime/virtcontainers/pkg/agent/protocols/types.pb.go

@@ -308,6 +308,7 @@ type Route struct {
 	Scope   uint32   `protobuf:"varint,5,opt,name=scope,proto3" json:"scope,omitempty"`
 	Family  IPFamily `protobuf:"varint,6,opt,name=family,proto3,enum=types.IPFamily" json:"family,omitempty"`
 	Flags   uint32   `protobuf:"varint,7,opt,name=flags,proto3" json:"flags,omitempty"`
+	Mtu     uint32   `protobuf:"varint,8,opt,name=mtu,proto3" json:"mtu,omitempty"`
 }
 
 func (x *Route) Reset() {