yggdrasil-network/yggdrasil-go
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Break deadlock by creating session recv queue when session is created instead of repointing at search completion, also make expired atomic

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This commit is contained in:
Neil Alexander 2019-04-22 11:20:35 +01:00
parent 5a02e2ff44
commit 47eb2fc47f
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GPG key ID: A02A2019A2BB0944
3 changed files with 32 additions and 44 deletions
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16
src/tuntap/tun.go
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@ -193,12 +193,13 @@ func (tun *TunAdapter) connReader(conn *yggdrasil.Conn) error {
delete(tun.conns, remoteNodeID)
tun.mutex.Unlock()
}()
tun.log.Debugln("Start connection reader for", conn.String())
b := make([]byte, 65535)
for {
n, err := conn.Read(b)
if err != nil {
tun.log.Errorln("TUN/TAP conn read error:", err)
return err
continue
}
if n == 0 {
continue
@ -209,7 +210,7 @@ func (tun *TunAdapter) connReader(conn *yggdrasil.Conn) error {
continue
}
if w != n {
tun.log.Errorln("TUN/TAP iface write len didn't match conn read len")
tun.log.Errorln("TUN/TAP iface write mismatch:", w, "bytes written vs", n, "bytes given")
continue
}
}
@ -220,7 +221,7 @@ func (tun *TunAdapter) ifaceReader() error {
for {
n, err := tun.iface.Read(bs)
if err != nil {
tun.log.Errorln("TUN/TAP iface read error:", err)
continue
}
// Look up if the dstination address is somewhere we already have an
// open connection to
@ -253,6 +254,10 @@ func (tun *TunAdapter) ifaceReader() error {
// Unknown address length or protocol
continue
}
if !dstAddr.IsValid() && !dstSnet.IsValid() {
// For now don't deal with any non-Yggdrasil ranges
continue
}
dstNodeID, dstNodeIDMask = dstAddr.GetNodeIDandMask()
// Do we have an active connection for this node ID?
tun.mutex.Lock()
@ -260,10 +265,11 @@ func (tun *TunAdapter) ifaceReader() error {
tun.mutex.Unlock()
w, err := conn.Write(bs)
if err != nil {
tun.log.Println("TUN/TAP conn write error:", err)
tun.log.Errorln("TUN/TAP conn write error:", err)
continue
}
if w != n {
tun.log.Errorln("TUN/TAP conn write mismatch:", w, "bytes written vs", n, "bytes given")
continue
}
} else {
@ -273,7 +279,7 @@ func (tun *TunAdapter) ifaceReader() error {
go tun.connReader(&conn)
} else {
tun.mutex.Unlock()
tun.log.Println("TUN/TAP dial error:", err)
tun.log.Errorln("TUN/TAP dial error:", err)
}
}