tun/netstack: ensure `(*netTun).incomingPacket` chan is closed

Without this, `device.Close()` will deadlock.

Signed-off-by: Colin Adler <colin1adler@gmail.com>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>

diff --git a/tun/netstack/tun.go b/tun/netstack/tun.go
index b0e7b70d60c149b34c994f735395d3bb2b275ea9..f232ca3337e5b0d49e765477307a946f56ae4efa 100644 (file)
--- a/tun/netstack/tun.go
+++ b/tun/netstack/tun.go
@@ -164,6 +164,10 @@ func (tun *netTun) Close() error {
 
        tun.ep.Close()
 
+       if tun.incomingPacket != nil {
+               close(tun.incomingPacket)
+       }
+
        return nil
 }