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conn: make binds replacable

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Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
This commit is contained in:
Jason A. Donenfeld
2021-02-22 02:01:50 +01:00
parent c69481f1b3
commit a4f8e83d5d
16 changed files with 160 additions and 149 deletions
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13
device/device.go
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@@ -279,11 +279,12 @@ func (device *Device) SetPrivateKey(sk NoisePrivateKey) error {
return nil
}
func NewDevice(tunDevice tun.Device, logger *Logger) *Device {
func NewDevice(tunDevice tun.Device, bind conn.Bind, logger *Logger) *Device {
device := new(Device)
device.state.state = uint32(deviceStateDown)
device.closed = make(chan struct{})
device.log = logger
device.net.bind = bind
device.tun.device = tunDevice
mtu, err := device.tun.device.MTU()
if err != nil {
@@ -302,11 +303,6 @@ func NewDevice(tunDevice tun.Device, logger *Logger) *Device {
device.queue.encryption = newOutboundQueue()
device.queue.decryption = newInboundQueue()
// prepare net
device.net.port = 0
device.net.bind = nil
// start workers
cpus := runtime.NumCPU()
@@ -414,7 +410,6 @@ func unsafeCloseBind(device *Device) error {
}
if netc.bind != nil {
err = netc.bind.Close()
netc.bind = nil
}
netc.stopping.Wait()
return err
@@ -474,16 +469,14 @@ func (device *Device) BindUpdate() error {
// bind to new port
var err error
netc := &device.net
netc.bind, netc.port, err = conn.CreateBind(netc.port)
netc.port, err = netc.bind.Open(netc.port)
if err != nil {
netc.bind = nil
netc.port = 0
return err
}
netc.netlinkCancel, err = device.startRouteListener(netc.bind)
if err != nil {
netc.bind.Close()
netc.bind = nil
netc.port = 0
return err
}