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Add support for specifying tun device name

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This commit is contained in:
Neil Alexander 2018-01-04 13:31:48 +00:00
parent e5d526881d
commit 1c799b305d
3 changed files with 12 additions and 8 deletions
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8
src/yggdrasil/debug.go
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@ -196,14 +196,14 @@ func (c *Core) DEBUG_getAddr() *address {
return address_addrForNodeID(&c.dht.nodeID) return address_addrForNodeID(&c.dht.nodeID)
} }
func (c *Core) DEBUG_startTun() { func (c *Core) DEBUG_startTun(ifname string) {
c.DEBUG_startTunWithMTU(1280) c.DEBUG_startTunWithMTU(ifname, 1280)
} }
func (c *Core) DEBUG_startTunWithMTU(mtu int) { func (c *Core) DEBUG_startTunWithMTU(ifname string, mtu int) {
addr := c.DEBUG_getAddr() addr := c.DEBUG_getAddr()
straddr := fmt.Sprintf("%s/%v", net.IP(addr[:]).String(), 8*len(address_prefix)) straddr := fmt.Sprintf("%s/%v", net.IP(addr[:]).String(), 8*len(address_prefix))
err := c.tun.setup(straddr, mtu) err := c.tun.setup(ifname, straddr, mtu)
if err != nil { panic(err) } if err != nil { panic(err) }
go c.tun.read() go c.tun.read()
go c.tun.write() go c.tun.write()

6
src/yggdrasil/tun.go
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@ -18,8 +18,10 @@ func (tun *tunDevice) init(core *Core) {
tun.core = core tun.core = core
} }
func (tun *tunDevice) setup(addr string, mtu int) error { func (tun *tunDevice) setup(ifname string, addr string, mtu int) error {
iface, err := water.New(water.Config{ DeviceType: water.TUN }) config := water.Config{ DeviceType: water.TUN }
if ifname != "" && ifname != "auto" { config.Name = ifname }
iface, err := water.New(config)
if err != nil { panic(err) } if err != nil { panic(err) }
tun.iface = iface tun.iface = iface
tun.mtu = mtu //1280 // Lets default to the smallest thing allowed for now tun.mtu = mtu //1280 // Lets default to the smallest thing allowed for now

6
yggdrasil.go
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@ -35,6 +35,7 @@ type nodeConfig struct {
SigPub string SigPub string
SigPriv string SigPriv string
Multicast bool Multicast bool
IfName string
} }
type node struct { type node struct {
@ -80,6 +81,7 @@ func generateConfig() *nodeConfig {
cfg.SigPriv = hex.EncodeToString(spriv[:]) cfg.SigPriv = hex.EncodeToString(spriv[:])
cfg.Peers = []string{} cfg.Peers = []string{}
cfg.Multicast = true cfg.Multicast = true
cfg.IfName = "auto"
return &cfg return &cfg
} }
@ -182,8 +184,8 @@ func main() {
n := node{} n := node{}
n.init(cfg, logger) n.init(cfg, logger)
logger.Println("Starting tun...") logger.Println("Starting tun...")
n.core.DEBUG_startTun() // 1280, the smallest supported MTU n.core.DEBUG_startTun(cfg.IfName) // 1280, the smallest supported MTU
//n.core.DEBUG_startTunWithMTU(65535) // Largest supported MTU //n.core.DEBUG_startTunWithMTU(cfg.IfName, 65535) // Largest supported MTU
defer func() { defer func() {
logger.Println("Closing...") logger.Println("Closing...")
n.core.DEBUG_stopTun() n.core.DEBUG_stopTun()