removing dead code from network module

apis/config/v1alpha1/clusterconfig_types.go

@@ -194,9 +194,6 @@ type LiqonetConfig struct {
 	// The subnet used by the cluster for the services, in CIDR notation
 	// +kubebuilder:validation:Pattern="^([0-9]{1,3}.){3}[0-9]{1,3}(/([0-9]|[1-2][0-9]|3[0-2]))$"
 	ServiceCIDR string `json:"serviceCIDR"`
-	// Set this flag to true if you are using GKE, default value is "false"
-	// +kubebuilder:default=false
-	GKEProvider bool `json:"GKEProvider"`
 	// Set of additional user-defined network pools.
 	// Default set of network pools is: [192.168.0.0/16, 10.0.0.0/8, 172.16.0.0/12]
 	AdditionalPools []CIDR `json:"additionalPools"`

deployments/liqo/crds/config.liqo.io_clusterconfigs.yaml

@@ -318,11 +318,6 @@ spec:
               liqonetConfig:
                 description: LiqonetConfig defines the configuration of the Liqo Networking.
                 properties:
-                  GKEProvider:
-                    default: false
-                    description: Set this flag to true if you are using GKE, default
-                      value is "false"
-                    type: boolean
                   additionalPools:
                     description: 'Set of additional user-defined network pools. Default
                       set of network pools is: [192.168.0.0/16, 10.0.0.0/8, 172.16.0.0/12]'
@@ -351,7 +346,6 @@ spec:
                     pattern: ^([0-9]{1,3}.){3}[0-9]{1,3}(/([0-9]|[1-2][0-9]|3[0-2]))$
                     type: string
                 required:
-                - GKEProvider
                 - additionalPools
                 - podCIDR
                 - reservedSubnets

deployments/liqo/values.yaml

@@ -71,8 +71,6 @@ networkManager:
     # you need tell liqo the subnets used in your cluster. E.g if your cluster nodes belong to the 192.168.2.0/24 subnet then
     # you should add that subnet to the reservedSubnets. PodCIDR and serviceCIDR used in the local cluster are automatically added to the reserved list.
     reservedSubnets: []
-    # -- Set this field to true if you are deploying liqo in GKE cluster
-    GKEProvider: false
     # -- Set of additional network pools. 
     # Network pools are used to map a cluster network into another one in order to prevent conflicts.
     # Default set of network pools is: [10.0.0.0/8, 192.168.0.0/16, 172.16.0.0/12]

internal/liqonet/route-operator/symmetricRoutingOperator.go

@@ -7,6 +7,8 @@ import (
 	"strings"
 	"sync"
 
+	"github.com/liqotech/liqo/pkg/liqonet/utils"
+
 	"golang.org/x/sys/unix"
 	corev1 "k8s.io/api/core/v1"
 	k8sApiErrors "k8s.io/apimachinery/pkg/api/errors"
@@ -112,7 +114,7 @@ func (src *SymmetricRoutingController) addRoute(req ctrl.Request, p *corev1.Pod)
 	if !ok {
 		return false, fmt.Errorf("ip not set")
 	}
-	gwIP := overlay.GetOverlayIP(nodeIP)
+	gwIP := utils.GetOverlayIP(nodeIP)
 	dstNet := strings.Join([]string{p.Status.PodIP, "32"}, "/")
 	added, err := routing.AddRoute(dstNet, gwIP, src.vxlanDev.Link.Attrs().Index, src.routingTableID)
 	if err != nil {

internal/liqonet/route-operator/symmetricRoutingOperator_test.go

@@ -20,7 +20,7 @@ import (
 	"sigs.k8s.io/controller-runtime/pkg/client"
 
 	liqoerrors "github.com/liqotech/liqo/pkg/liqonet/errors"
-	"github.com/liqotech/liqo/pkg/liqonet/overlay"
+	"github.com/liqotech/liqo/pkg/liqonet/utils"
 )
 
 var (
@@ -71,7 +71,7 @@ var _ = Describe("SymmetricRoutingOperator", func() {
 				},
 			},
 		}
-		gw := net.ParseIP(overlay.GetOverlayIP(srcNodeIP))
+		gw := net.ParseIP(utils.GetOverlayIP(srcNodeIP))
 		Expect(gw).NotTo(BeNil())
 		_, dst, err := net.ParseCIDR(srcRouteDst)
 		Expect(err).To(BeNil())
@@ -232,7 +232,7 @@ var _ = Describe("SymmetricRoutingOperator", func() {
 				Expect(err).Should(BeNil())
 				Expect(len(routes)).Should(BeNumerically("==", 1))
 				Expect(routes[0].Dst.String()).Should(Equal(dstNet.String()))
-				Expect(routes[0].Gw.String()).Should(Equal(overlay.GetOverlayIP(srcNodeIP)))
+				Expect(routes[0].Gw.String()).Should(Equal(utils.GetOverlayIP(srcNodeIP)))
 			})
 		})
 
@@ -254,7 +254,7 @@ var _ = Describe("SymmetricRoutingOperator", func() {
 				Expect(err).Should(BeNil())
 				Expect(len(routes)).Should(BeNumerically("==", 1))
 				Expect(routes[0].Dst.String()).Should(Equal(srcRouteDst))
-				Expect(routes[0].Gw.String()).Should(Equal(overlay.GetOverlayIP(srcNodeIP)))
+				Expect(routes[0].Gw.String()).Should(Equal(utils.GetOverlayIP(srcNodeIP)))
 
 			})
 		})

pkg/consts/liqonet.go

@@ -52,6 +52,10 @@ const (
 	// VxlanDeviceName name used for the vxlan devices created on each node by the instances
 	// of liqo-route.
 	VxlanDeviceName = "liqo.vxlan"
+	// OverlayNetworkPrefix prefix used for the overlay network.
+	OverlayNetworkPrefix = "240"
+	// OverlayNetworkMask size of the overlay network.
+	OverlayNetworkMask = "/8"
 	// PodCIDR is a field of the TunnelEndpoint resource.
 	PodCIDR = "PodCIDR"
 	// LocalPodCIDR is a field of the TunnelEndpoint resource.