drivers might want to call ifiq_barrier.

diff --git a/sys/net/ifq.h b/sys/net/ifq.h
index f8f520d..8e0fcd8 100644 (file)
--- a/sys/net/ifq.h
+++ b/sys/net/ifq.h
@@ -1,4 +1,4 @@
-/*     $OpenBSD: ifq.h,v 1.17 2017/12/15 01:37:30 dlg Exp $ */
+/*     $OpenBSD: ifq.h,v 1.18 2017/12/21 03:59:32 dlg Exp $ */
 
 /*
  * Copyright (c) 2015 David Gwynne <dlg@openbsd.org>
@@ -470,6 +470,7 @@ int          ifiq_input(struct ifiqueue *, struct mbuf_list *,
                     unsigned int);
 int             ifiq_enqueue(struct ifiqueue *, struct mbuf *);
 void            ifiq_add_data(struct ifiqueue *, struct if_data *);
+void            ifiq_barrier(struct ifiqueue *);
 
 #define        ifiq_len(_ifiq)                 ml_len(&(_ifiq)->ifiq_ml)
 #define        ifiq_empty(_ifiq)               ml_empty(&(_ifiq)->ifiq_ml)