f-14: code: add create bridge code #14

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

internal/netif/bridge.go

@@ -0,0 +1,38 @@
+package netif
+
+import (
+	"fmt"
+	"os"
+
+	"github.com/vishvananda/netlink"
+)
+
+func setBridgeSTP(bridge string, enable bool) error {
+	path := fmt.Sprintf("/sys/class/net/%s/bridge/stp_state", bridge)
+
+	val := "0"
+	if enable {
+		val = "1"
+	}
+
+	return os.WriteFile(path, []byte(val), 0644)
+}
+
+func CreateBridge(name string, mtu int, stp bool) error {
+	br := &netlink.Bridge{
+		LinkAttrs: netlink.LinkAttrs{
+			Name: name,
+			MTU:  mtu,
+		},
+	}
+
+	if err := netlink.LinkAdd(br); err != nil {
+		return err
+	}
+
+	if err := netlink.LinkSetUp(br); err != nil {
+		return err
+	}
+
+	return setBridgeSTP(name, stp)
+}