Consolidate distribution entry state transitions

* Make connection_id part of the distribution handle as {ConnId, DistEntry}
  in order for BIFs to verify correct connection.
* Make distribution handle opaque to net_kernel.
* Remove some unsafe lockless reads of DistEntry.flags
* Change state ERTS_DE_STATE_EXITING to be more of an internal state that
  prevents erts from enqueue, encode or schedule new data to be sent. Otherwise
  it should behave like ERTS_DE_STATE_CONNECTED.

1 files changed, 1 insertions, 0 deletions

diff --git a/erts/emulator/beam/erl_port.h b/erts/emulator/beam/erl_port.h
index cf4a233b54..da00871d33 100644
--- a/erts/emulator/beam/erl_port.h
+++ b/erts/emulator/beam/erl_port.h
@@ -155,6 +155,7 @@ struct _erl_drv_port {
 
     ErlPortIOQueue ioq;          /* driver accessible i/o queue */
     DistEntry *dist_entry;       /* Dist entry used in DISTRIBUTION */
+    Uint32 connection_id;
     char *name;		         /* String used in the open */
     erts_driver_t* drv_ptr;
     UWord drv_data;