add a congestion indicator to if_queue. It is set when the input queue

is full, along with a timer that unsets it again after 10ms.
The input queue beeing full is a reliable indicator for CPU overload, and
this flag allows other subsystems to cope with the situation.
hacked with beck
ok kjc@ markus@ beck@

1 files changed, 2 insertions, 6 deletions

diff --git a/sys/net/if_atmsubr.c b/sys/net/if_atmsubr.c
index f1bbeba56f5..efdc96f0c8d 100644
--- a/sys/net/if_atmsubr.c
+++ b/sys/net/if_atmsubr.c
@@ -1,4 +1,4 @@
-/*      $OpenBSD: if_atmsubr.c,v 1.22 2003/12/10 07:22:42 itojun Exp $       */
+/*      $OpenBSD: if_atmsubr.c,v 1.23 2004/04/17 00:09:01 henning Exp $       */
 
 /*
  *
@@ -354,11 +354,7 @@ atm_input(ifp, ah, m, rxhand)
 	}
 
 	s = splimp();
-	if (IF_QFULL(inq)) {
-		IF_DROP(inq);
-		m_freem(m);
-	} else
-		IF_ENQUEUE(inq, m);
+	IF_INPUT_ENQUEUE(inq);
 	splx(s);
 }