f-25: netif: Add tap handle

Signed-off-by: GnomeZworc <nicolas.boufidjeline@g3e.fr>

internal/netif/tap_linux.go

@@ -0,0 +1,28 @@
+//go:build linux
+
+package netif
+
+import (
+	"fmt"
+
+	"git.g3e.fr/syonad/two/internal/netns"
+	"github.com/vishvananda/netlink"
+)
+
+func CreateTap(tapID int, bridgeName, vpcName string) error {
+	name := fmt.Sprintf("tap%d", tapID)
+
+	return netns.Call(vpcName, func() error {
+		tap := &netlink.Tuntap{
+			LinkAttrs: netlink.LinkAttrs{Name: name},
+			Mode:      netlink.TUNTAP_MODE_TAP,
+		}
+		if err := netlink.LinkAdd(tap); err != nil {
+			return err
+		}
+		if err := BridgeSetMaster(name, bridgeName); err != nil {
+			return err
+		}
+		return LinkSetUp(name)
+	})
+}

internal/netif/tap_other.go

@@ -0,0 +1,9 @@
+//go:build !linux
+
+package netif
+
+import "errors"
+
+func CreateTap(_ int, _, _ string) error {
+	return errors.New("netif: tap not supported on this platform")
+}