s6-netdev/misc.go

package s6netdev

import (
	"fmt"
	"net"
	"net/netip"
	"strings"
)

var (
	dummy_svc_blacklist = map[S6SvcName]interface{}{
		"bundle.hw-coldplug": nil,
		"module.8021q":       nil,
		"module.bonding":     nil,
		"module.bridge":      nil,
		"module.vrf":         nil,
		"module.ipv6":        nil,
		"module.wireguard":   nil,
		"mount.proc":         nil,
		"logger.udhcpc":      nil,
	}
)

func (t *S6SvcTree) NetdevEnslaveInterface(iface, master string) *S6Svc {
	svc_name := S6SvcName(fmt.Sprintf("interface.%s.master.%s", iface, master))

	l := t.S6New(svc_name, &S6SvcTypes.Oneshot)
	l.Up = strings.Join([]string{
		NETDEV_EXECLINE_HEADER,
		ExeclineDefine("INTERFACE", iface),
		ExeclineDefine("MASTER", master),
		"ip link set dev $INTERFACE master $MASTER",
	}, "\n")
	l.Down = strings.Join([]string{
		NETDEV_EXECLINE_HEADER,
		ExeclineDefine("INTERFACE", iface),
		"ip link set dev $INTERFACE nomaster",
	}, "\n")

	l.S6Children(t.CreateIfaceService(iface), t.CreateIfaceService(master))
	t.NetdevDependBundleStage(iface, "configure", l)

	return l
}

func NetdevIPAddrVer(IP netip.Addr) int {
	if IP.Is6() {
		return 6
	}
	return 4
}

func NetdevIsDummy(s S6SvcName) (r bool) {
	_, r = dummy_svc_blacklist[s]
	return
}

func NetdevOnlyMAC(x net.HardwareAddr, _ error) net.HardwareAddr {
	return x
}