work-in-progress adding nodeinfo

src/tuntap/tun.go

@@ -45,7 +45,9 @@ type TunAdapter struct {
 	phony.Inbox // Currently only used for _handlePacket from the reader, TODO: all the stuff that currently needs a mutex below
 	//mutex        sync.RWMutex // Protects the below
 	isOpen     bool
+	isEnabled  bool // Used by the writer to drop sessionTraffic if not enabled
 	gatekeeper func(pubkey ed25519.PublicKey, initiator bool) bool
+	nodeinfo   nodeinfo
 }
 
 func (tun *TunAdapter) SetSessionGatekeeper(gatekeeper func(pubkey ed25519.PublicKey, initiator bool) bool) {
@@ -107,6 +109,7 @@ func (tun *TunAdapter) Init(core *yggdrasil.Core, config *config.NodeState, log
 	tun.store.init(tun)
 	tun.config = config
 	tun.log = log
+	tun.nodeinfo.init(tun)
 	if err := tun.core.SetOutOfBandHandler(tun.oobHandler); err != nil {
 		return fmt.Errorf("tun.core.SetOutOfBandHander: %w", err)
 	}
@@ -138,15 +141,8 @@ func (tun *TunAdapter) _start() error {
 	addr := fmt.Sprintf("%s/%d", net.IP(tun.addr[:]).String(), 8*len(address.GetPrefix())-1)
 	if current.IfName == "none" || current.IfName == "dummy" {
 		tun.log.Debugln("Not starting TUN as ifname is none or dummy")
-		go func() {
-			bs := make([]byte, tun.core.PacketConn.MTU())
-			for {
-				// Dump traffic to nowhere
-				if _, _, err := tun.core.PacketConn.ReadFrom(bs); err != nil {
-					return
-				}
-			}
-		}()
+		tun.isEnabled = false
+		go tun.write()
 		return nil
 	}
 	mtu := current.IfMTU
@@ -160,6 +156,7 @@ func (tun *TunAdapter) _start() error {
 		tun.log.Warnf("Warning: Interface MTU %d automatically adjusted to %d (supported range is 1280-%d)", current.IfMTU, tun.MTU(), MaximumMTU())
 	}
 	tun.isOpen = true
+	tun.isEnabled = true
 	go tun.read()
 	go tun.write()
 	return nil