SchultesDev/wireguard-go
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Revert "Peer timer teardown"

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This reverts commit d73f960aab.

Problems with deadlocking arises due to orphaned packets in per-peer
queues. Additional work on this issue continues in seperate branch.
This commit is contained in:
Mathias Hall-Andersen
2018-01-04 14:24:14 +01:00
parent d73f960aab
commit 9360bac632
7 changed files with 102 additions and 163 deletions
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45
src/peer.go
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@@ -34,15 +34,15 @@ type Peer struct {
flushNonceQueue Signal // size 1, empty queued packets
messageSend Signal // size 1, message was send to peer
messageReceived Signal // size 1, authenticated message recv
stop Signal // size 0, stop all goroutines in peer
stop Signal // size 0, stop all goroutines
}
timer struct {
// state related to WireGuard timers
keepalivePersistent Timer // set for persistent keepalives
keepalivePassive Timer // set upon recieving messages
newHandshake Timer // begin a new handshake (stale)
zeroAllKeys Timer // zero all key material
handshakeNew Timer // begin a new handshake (stale)
handshakeDeadline Timer // complete handshake timeout
handshakeTimeout Timer // current handshake message timeout
@@ -69,8 +69,8 @@ func (device *Device) NewPeer(pk NoisePublicKey) (*Peer, error) {
peer.timer.keepalivePersistent = NewTimer()
peer.timer.keepalivePassive = NewTimer()
peer.timer.newHandshake = NewTimer()
peer.timer.zeroAllKeys = NewTimer()
peer.timer.handshakeNew = NewTimer()
peer.timer.handshakeDeadline = NewTimer()
peer.timer.handshakeTimeout = NewTimer()
@@ -116,29 +116,32 @@ func (device *Device) NewPeer(pk NoisePublicKey) (*Peer, error) {
// prepare signaling & routines
peer.signal.stop = NewSignal()
peer.signal.newKeyPair = NewSignal()
peer.signal.handshakeBegin = NewSignal()
peer.signal.handshakeCompleted = NewSignal()
peer.signal.flushNonceQueue = NewSignal()
go peer.RoutineNonce()
go peer.RoutineTimerHandler()
go peer.RoutineSequentialSender()
go peer.RoutineSequentialReceiver()
return peer, nil
}
func (peer *Peer) SendBuffer(buffer []byte) error {
peer.device.net.mutex.RLock()
defer peer.device.net.mutex.RUnlock()
peer.mutex.RLock()
defer peer.mutex.RUnlock()
if peer.endpoint == nil {
return errors.New("No known endpoint for peer")
}
return peer.device.net.bind.Send(buffer, peer.endpoint)
}
/* Returns a short string identifier for logging
/* Returns a short string identification for logging
*/
func (peer *Peer) String() string {
if peer.endpoint == nil {
@@ -156,32 +159,6 @@ func (peer *Peer) String() string {
)
}
/* Starts all routines for a given peer
*
* Requires that the caller holds the exclusive peer lock!
*/
func unsafePeerStart(peer *Peer) {
peer.signal.stop.Broadcast()
peer.signal.stop = NewSignal()
var wait sync.WaitGroup
wait.Add(1)
go peer.RoutineNonce()
go peer.RoutineTimerHandler(&wait)
go peer.RoutineSequentialSender()
go peer.RoutineSequentialReceiver()
wait.Wait()
}
func (peer *Peer) Start() {
peer.mutex.Lock()
unsafePeerStart(peer)
peer.mutex.Unlock()
}
func (peer *Peer) Stop() {
func (peer *Peer) Close() {
peer.signal.stop.Broadcast()
}