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mirror of https://github.com/cwinfo/yggdrasil-go.git synced 2024-11-09 23:20:28 +00:00

make sure the only place traffic is ever dropped is in the switch. this currently disables the dedicated crypto workers

This commit is contained in:
Arceliar 2019-02-23 00:07:00 -06:00
parent 68dce0dd74
commit 042adb0516
4 changed files with 46 additions and 21 deletions

View File

@ -216,8 +216,8 @@ func (intf *linkInterface) handler() error {
case signalReady <- struct{}{}:
default:
}
intf.link.core.log.Debugf("Sending packet to %s: %s, source %s",
strings.ToUpper(intf.info.linkType), themString, intf.info.local)
//intf.link.core.log.Debugf("Sending packet to %s: %s, source %s",
// strings.ToUpper(intf.info.linkType), themString, intf.info.local)
}
}
}()
@ -237,9 +237,9 @@ func (intf *linkInterface) handler() error {
recvTimer := time.NewTimer(recvTime)
defer util.TimerStop(recvTimer)
for {
intf.link.core.log.Debugf("State of %s: %s, source %s :: isAlive %t isReady %t sendTimerRunning %t recvTimerRunning %t",
strings.ToUpper(intf.info.linkType), themString, intf.info.local,
isAlive, isReady, sendTimerRunning, recvTimerRunning)
//intf.link.core.log.Debugf("State of %s: %s, source %s :: isAlive %t isReady %t sendTimerRunning %t recvTimerRunning %t",
// strings.ToUpper(intf.info.linkType), themString, intf.info.local,
// isAlive, isReady, sendTimerRunning, recvTimerRunning)
select {
case gotMsg, ok := <-signalAlive:
if !ok {

View File

@ -68,17 +68,34 @@ func (r *router) init(core *Core) {
r.subnet = *address.SubnetForNodeID(&r.core.dht.nodeID)
in := make(chan []byte, 32) // TODO something better than this...
p := r.core.peers.newPeer(&r.core.boxPub, &r.core.sigPub, &crypto.BoxSharedKey{}, "(self)", nil)
p.out = func(packet []byte) {
// This is to make very sure it never blocks
select {
case in <- packet:
return
default:
util.PutBytes(packet)
}
}
p.out = func(packet []byte) { in <- packet }
r.in = in
r.out = func(packet []byte) { p.handlePacket(packet) } // The caller is responsible for go-ing if it needs to not block
out := make(chan []byte, 32)
go func() {
for packet := range out {
p.handlePacket(packet)
}
}()
out2 := make(chan []byte, 32)
go func() {
// This worker makes sure r.out never blocks
// It will buffer traffic long enough for the switch worker to take it
// If (somehow) you can send faster than the switch can receive, then this would use unbounded memory
// But crypto slows sends enough that the switch should always be able to take the packets...
var buf [][]byte
for {
buf = append(buf, <-out2)
for len(buf) > 0 {
select {
case bs := <-out2:
buf = append(buf, bs)
case out <- buf[0]:
buf = buf[1:]
}
}
}
}()
r.out = func(packet []byte) { out2 <- packet }
r.toRecv = make(chan router_recvPacket, 32)
recv := make(chan []byte, 32)
send := make(chan []byte, 32)
@ -306,6 +323,8 @@ func (r *router) sendPacket(bs []byte) {
return
}
sinfo.doSend(bs)
return
sinfo.send <- bs
}
}
@ -385,6 +404,8 @@ func (r *router) handleTraffic(packet []byte) {
if !isIn {
return
}
sinfo.doRecv(&p)
return
sinfo.recv <- &p
}

View File

@ -304,7 +304,7 @@ func (ss *sessions) createSession(theirPermKey *crypto.BoxPubKey) *sessionInfo {
sinfo.theirSubnet = *address.SubnetForNodeID(crypto.GetNodeID(&sinfo.theirPermPub))
sinfo.send = make(chan []byte, 32)
sinfo.recv = make(chan *wire_trafficPacket, 32)
go sinfo.doWorker()
//go sinfo.doWorker()
ss.sinfos[sinfo.myHandle] = &sinfo
ss.byMySes[sinfo.mySesPub] = &sinfo.myHandle
ss.byTheirPerm[sinfo.theirPermPub] = &sinfo.myHandle
@ -625,6 +625,8 @@ func (sinfo *sessionInfo) doRecv(p *wire_trafficPacket) {
sinfo.updateNonce(&p.Nonce)
sinfo.time = time.Now()
sinfo.bytesRecvd += uint64(len(bs))
sinfo.core.router.recvPacket(bs, sinfo)
return
select {
case sinfo.core.router.toRecv <- router_recvPacket{bs, sinfo}:
default: // avoid deadlocks, maybe do this somewhere else?...

View File

@ -668,10 +668,12 @@ func (t *switchTable) handleIn(packet []byte, idle map[switchPort]struct{}) bool
//nothing
case coordLen < bestCoordLen:
update = true
case coordLen > bestCoordLen:
//nothing
case port < best.port:
update = true
/*
case coordLen > bestCoordLen:
//nothing
case port < best.port:
update = true
*/
default:
//nothing
}
@ -800,7 +802,7 @@ func (t *switchTable) doWorker() {
t.queues.bufs = make(map[string]switch_buffer) // Packets per PacketStreamID (string)
idle := make(map[switchPort]struct{}) // this is to deduplicate things
for {
t.core.log.Debugf("Switch state: idle = %d, buffers = %d", len(idle), len(t.queues.bufs))
//t.core.log.Debugf("Switch state: idle = %d, buffers = %d", len(idle), len(t.queues.bufs))
select {
case bytes := <-t.packetIn:
// Try to send it somewhere (or drop it if it's corrupt or at a dead end)