vcl/session: tx notifications for cut-thru sessions

Change-Id: I076c753e419bbb177d2d28609190715e9895b398
Signed-off-by: Florin Coras <fcoras@cisco.com>
diff --git a/src/vnet/session/session_node.c b/src/vnet/session/session_node.c
index c894c43..605fd58 100644
--- a/src/vnet/session/session_node.c
+++ b/src/vnet/session/session_node.c
@@ -947,6 +947,13 @@
 	      continue;
 	    }
 	  break;
+	case SESSION_IO_EVT_RX:
+	  s = session_event_get_session (e, thread_index);
+	  if (!s)
+	    break;
+	  transport_app_rx_evt (session_get_transport_proto (s),
+				s->connection_index, s->thread_index);
+	  break;
 	case SESSION_CTRL_EVT_CLOSE:
 	  s = session_get_from_handle_if_valid (e->session_handle);
 	  if (PREDICT_FALSE (!s))