ALTQ'ify network drivers.

- use the new queue macros.
- use IFQ_POLL() to peek at the next packet.
- use IFQ_IS_EMPTY() for empty check.
- drivers should always check if (m == NULL) after IFQ_DEQUEUE(),
since it could return NULL even when IFQ_IS_EMPTY() is FALSE
under rate-limiting.
- drivers are supposed to call if_start from tx complete interrupts
(in order to trigger the next dequeue under rate-limiting).

1 files changed, 3 insertions, 2 deletions

diff --git a/sys/dev/pcmcia/if_cnw.c b/sys/dev/pcmcia/if_cnw.c
index 005432fafe6..2f439b4f50a 100644
--- a/sys/dev/pcmcia/if_cnw.c
+++ b/sys/dev/pcmcia/if_cnw.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: if_cnw.c,v 1.8 2001/06/25 04:05:50 fgsch Exp $	*/
+/*	$OpenBSD: if_cnw.c,v 1.9 2001/06/27 06:34:51 kjc Exp $	*/
 /*-
  * Copyright (c) 1998 The NetBSD Foundation, Inc.
  * All rights reserved.
@@ -434,6 +434,7 @@ cnw_attach(parent, self, aux)
 	ifp->if_ioctl = cnw_ioctl;
 	ifp->if_watchdog = cnw_watchdog;
 	ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_NOTRAILERS;
+	IFQ_SET_READY(&ifp->if_snd);
 
 	/* Attach the interface */
 	if_attach(ifp);
@@ -471,7 +472,7 @@ cnw_start(ifp)
 			return;
 		}
 
-		IF_DEQUEUE(&ifp->if_snd, m0);
+		IFQ_DEQUEUE(&ifp->if_snd, m0);
 		if (m0 == 0)
 			return;