mirror of
https://github.com/cwinfo/yggdrasil-go.git
synced 2024-12-23 08:45:39 +00:00
commit
6b6a5a2906
@ -63,9 +63,12 @@ type TunOptions struct {
|
||||
|
||||
// Gets the maximum supported MTU for the platform based on the defaults in
|
||||
// defaults.GetDefaults().
|
||||
func getSupportedMTU(mtu int) int {
|
||||
if mtu > defaults.GetDefaults().MaximumIfMTU {
|
||||
return defaults.GetDefaults().MaximumIfMTU
|
||||
func getSupportedMTU(mtu int, istapmode bool) int {
|
||||
if mtu < 1280 {
|
||||
return 1280
|
||||
}
|
||||
if mtu > MaximumMTU(istapmode) {
|
||||
return MaximumMTU(istapmode)
|
||||
}
|
||||
return mtu
|
||||
}
|
||||
@ -80,7 +83,7 @@ func (tun *TunAdapter) Name() string {
|
||||
// the maximum value is determined by your platform. The returned value will
|
||||
// never exceed that of MaximumMTU().
|
||||
func (tun *TunAdapter) MTU() int {
|
||||
return getSupportedMTU(tun.mtu)
|
||||
return getSupportedMTU(tun.mtu, tun.IsTAP())
|
||||
}
|
||||
|
||||
// IsTAP returns true if the adapter is a TAP adapter (Layer 2) or false if it
|
||||
@ -97,7 +100,11 @@ func DefaultName() string {
|
||||
// DefaultMTU gets the default TUN/TAP interface MTU for your platform. This can
|
||||
// be as high as MaximumMTU(), depending on platform, but is never lower than 1280.
|
||||
func DefaultMTU() int {
|
||||
return defaults.GetDefaults().DefaultIfMTU
|
||||
ehbytes := 0
|
||||
if DefaultIsTAP() {
|
||||
ehbytes = 14
|
||||
}
|
||||
return defaults.GetDefaults().DefaultIfMTU - ehbytes
|
||||
}
|
||||
|
||||
// DefaultIsTAP returns true if the default adapter mode for the current
|
||||
@ -109,8 +116,12 @@ func DefaultIsTAP() bool {
|
||||
// MaximumMTU returns the maximum supported TUN/TAP interface MTU for your
|
||||
// platform. This can be as high as 65535, depending on platform, but is never
|
||||
// lower than 1280.
|
||||
func MaximumMTU() int {
|
||||
return defaults.GetDefaults().MaximumIfMTU
|
||||
func MaximumMTU(iftapmode bool) int {
|
||||
ehbytes := 0
|
||||
if iftapmode {
|
||||
ehbytes = 14
|
||||
}
|
||||
return defaults.GetDefaults().MaximumIfMTU - ehbytes
|
||||
}
|
||||
|
||||
// Init initialises the TUN/TAP module. You must have acquired a Listener from
|
||||
@ -167,6 +178,9 @@ func (tun *TunAdapter) _start() error {
|
||||
if err := tun.setup(ifname, iftapmode, addr, tun.mtu); err != nil {
|
||||
return err
|
||||
}
|
||||
if tun.MTU() != current.IfMTU {
|
||||
tun.log.Warnf("Warning: Interface MTU %d automatically adjusted to %d (supported range is 1280-%d)", current.IfMTU, tun.MTU(), MaximumMTU(tun.IsTAP()))
|
||||
}
|
||||
}
|
||||
if ifname == "none" || ifname == "dummy" {
|
||||
tun.log.Debugln("Not starting TUN/TAP as ifname is none or dummy")
|
||||
@ -176,7 +190,7 @@ func (tun *TunAdapter) _start() error {
|
||||
go tun.handler()
|
||||
tun.reader.Act(nil, tun.reader._read) // Start the reader
|
||||
tun.icmpv6.Init(tun)
|
||||
if iftapmode {
|
||||
if tun.IsTAP() {
|
||||
go tun.icmpv6.Solicit(tun.addr)
|
||||
}
|
||||
tun.ckr.init(tun)
|
||||
|
@ -99,7 +99,7 @@ func (tun *TunAdapter) setup(ifname string, iftapmode bool, addr string, mtu int
|
||||
panic(err)
|
||||
}
|
||||
tun.iface = iface
|
||||
tun.mtu = getSupportedMTU(mtu)
|
||||
tun.mtu = getSupportedMTU(mtu, iftapmode)
|
||||
return tun.setupAddress(addr)
|
||||
}
|
||||
|
||||
|
@ -18,7 +18,8 @@ import (
|
||||
// Configures the "utun" adapter with the correct IPv6 address and MTU.
|
||||
func (tun *TunAdapter) setup(ifname string, iftapmode bool, addr string, mtu int) error {
|
||||
if iftapmode {
|
||||
tun.log.Warnln("TAP mode is not supported on this platform, defaulting to TUN")
|
||||
tun.log.Warnln("Warning: TAP mode is not supported on this platform, defaulting to TUN")
|
||||
iftapmode = false
|
||||
}
|
||||
config := water.Config{DeviceType: water.TUN}
|
||||
iface, err := water.New(config)
|
||||
@ -26,7 +27,7 @@ func (tun *TunAdapter) setup(ifname string, iftapmode bool, addr string, mtu int
|
||||
panic(err)
|
||||
}
|
||||
tun.iface = iface
|
||||
tun.mtu = getSupportedMTU(mtu)
|
||||
tun.mtu = getSupportedMTU(mtu, iftapmode)
|
||||
return tun.setupAddress(addr)
|
||||
}
|
||||
|
||||
|
@ -26,7 +26,7 @@ func (tun *TunAdapter) setup(ifname string, iftapmode bool, addr string, mtu int
|
||||
panic(err)
|
||||
}
|
||||
tun.iface = iface
|
||||
tun.mtu = getSupportedMTU(mtu)
|
||||
tun.mtu = getSupportedMTU(mtu, iftapmode)
|
||||
// The following check is specific to Linux, as the TAP driver only supports
|
||||
// an MTU of 65535-14 to make room for the ethernet headers. This makes sure
|
||||
// that the MTU gets rounded down to 65521 instead of causing a panic.
|
||||
|
@ -21,13 +21,13 @@ func (tun *TunAdapter) setup(ifname string, iftapmode bool, addr string, mtu int
|
||||
panic(err)
|
||||
}
|
||||
tun.iface = iface
|
||||
tun.mtu = getSupportedMTU(mtu)
|
||||
tun.mtu = getSupportedMTU(mtu, iftapmode)
|
||||
return tun.setupAddress(addr)
|
||||
}
|
||||
|
||||
// We don't know how to set the IPv6 address on an unknown platform, therefore
|
||||
// write about it to stdout and don't try to do anything further.
|
||||
func (tun *TunAdapter) setupAddress(addr string) error {
|
||||
tun.log.Warnln("Platform not supported, you must set the address of", tun.iface.Name(), "to", addr)
|
||||
tun.log.Warnln("Warning: Platform not supported, you must set the address of", tun.iface.Name(), "to", addr)
|
||||
return nil
|
||||
}
|
||||
|
@ -17,7 +17,8 @@ import (
|
||||
// delegate the hard work to "netsh".
|
||||
func (tun *TunAdapter) setup(ifname string, iftapmode bool, addr string, mtu int) error {
|
||||
if !iftapmode {
|
||||
tun.log.Warnln("TUN mode is not supported on this platform, defaulting to TAP")
|
||||
tun.log.Warnln("Warning: TUN mode is not supported on this platform, defaulting to TAP")
|
||||
iftapmode = true
|
||||
}
|
||||
config := water.Config{DeviceType: water.TAP}
|
||||
config.PlatformSpecificParams.ComponentID = "tap0901"
|
||||
@ -60,7 +61,7 @@ func (tun *TunAdapter) setup(ifname string, iftapmode bool, addr string, mtu int
|
||||
panic(err)
|
||||
}
|
||||
tun.iface = iface
|
||||
tun.mtu = getSupportedMTU(mtu)
|
||||
tun.mtu = getSupportedMTU(mtu, iftapmode)
|
||||
err = tun.setupMTU(tun.mtu)
|
||||
if err != nil {
|
||||
panic(err)
|
||||
|
Loading…
Reference in New Issue
Block a user