f-15: ia: first subnet try

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

internal/netif/addr.go

@@ -0,0 +1,21 @@
+package netif
+
+import (
+	"net"
+
+	"github.com/vishvananda/netlink"
+)
+
+func AddrAdd(iface string, ip net.IP) error {
+	link, err := netlink.LinkByName(iface)
+	if err != nil {
+		return err
+	}
+	addr := &netlink.Addr{
+		IPNet: &net.IPNet{
+			IP:   ip,
+			Mask: net.CIDRMask(32, 32),
+		},
+	}
+	return netlink.AddrAdd(link, addr)
+}

internal/netif/route_linux.go

@@ -0,0 +1,21 @@
+//go:build linux
+
+package netif
+
+import (
+	"net"
+
+	"github.com/vishvananda/netlink"
+)
+
+func RouteAdd(iface string, subnet *net.IPNet) error {
+	link, err := netlink.LinkByName(iface)
+	if err != nil {
+		return err
+	}
+	return netlink.RouteAdd(&netlink.Route{
+		LinkIndex: link.Attrs().Index,
+		Dst:       subnet,
+		Scope:     netlink.SCOPE_LINK,
+	})
+}

internal/netif/route_other.go

@@ -0,0 +1,9 @@
+//go:build !linux
+
+package netif
+
+import "net"
+
+func RouteAdd(_ string, _ *net.IPNet) error {
+	return nil
+}

internal/netif/vxlan.go

@@ -0,0 +1,20 @@
+package netif
+
+import (
+	"net"
+
+	"github.com/vishvananda/netlink"
+)
+
+func CreateVxlan(name string, vxlanID int, localIP net.IP) error {
+	vxlan := &netlink.Vxlan{
+		LinkAttrs: netlink.LinkAttrs{
+			Name: name,
+		},
+		VxlanId:  vxlanID,
+		Port:     4789,
+		SrcAddr:  localIP,
+		Learning: false,
+	}
+	return netlink.LinkAdd(vxlan)
+}