From 054ef37088aeb0e310b5edb1d5eebe47b2c3a973 Mon Sep 17 00:00:00 2001
From: Garrett Wollman <wollman@FreeBSD.org>
Date: Wed, 1 Nov 1995 17:18:27 +0000
Subject: [PATCH] Instrument the IP input queue with two new read-only MIB
 entries: 	net.inet.ip.intr-queue-maxlen (=== ipintrq.ifq_maxlen) and
 net.inet.ip.intr-queue-drops (=== ipintrq.ifq_drops)

There should probably be a standard way of getting the same information
going the other way.
---
 sys/netinet/in.h       | 8 ++++++--
 sys/netinet/ip_input.c | 7 ++++++-
 2 files changed, 12 insertions(+), 3 deletions(-)

diff --git a/sys/netinet/in.h b/sys/netinet/in.h
index 53fd10305be7..09e5bc958987 100644
--- a/sys/netinet/in.h
+++ b/sys/netinet/in.h
@@ -31,7 +31,7 @@
  * SUCH DAMAGE.
  *
  *	@(#)in.h	8.3 (Berkeley) 1/3/94
- * $Id: in.h,v 1.10 1995/06/13 17:51:08 wollman Exp $
+ * $Id: in.h,v 1.11 1995/07/18 09:56:42 peter Exp $
  */
 
 #ifndef _NETINET_IN_H_
@@ -233,7 +233,9 @@ struct ip_mreq {
 #define IPCTL_RTMAXCACHE	7	/* trigger level for dynamic expire */
 #define	IPCTL_SOURCEROUTE	8	/* may perform source routes */
 #define	IPCTL_DIRECTEDBROADCAST	9	/* may re-broadcast received packets */
-#define	IPCTL_MAXID		10
+#define IPCTL_INTRQMAXLEN	10	/* max length of netisr queue */
+#define IPCTL_INTRQDROPS	11	/* number of netisr q drops */
+#define	IPCTL_MAXID		12
 
 #define	IPCTL_NAMES { \
 	{ 0, 0 }, \
@@ -246,6 +248,8 @@ struct ip_mreq {
 	{ "rtmaxcache", CTLTYPE_INT }, \
 	{ "sourceroute", CTLTYPE_INT }, \
  	{ "directed-broadcast", CTLTYPE_INT }, \
+	{ "intr-queue-maxlen", CTLTYPE_INT }, \
+	{ "intr-queue-drops", CTLTYPE_INT }, \
 }
 
 
diff --git a/sys/netinet/ip_input.c b/sys/netinet/ip_input.c
index b514ca7592a6..383573b79694 100644
--- a/sys/netinet/ip_input.c
+++ b/sys/netinet/ip_input.c
@@ -31,7 +31,7 @@
  * SUCH DAMAGE.
  *
  *	@(#)ip_input.c	8.2 (Berkeley) 1/4/94
- * $Id: ip_input.c,v 1.25 1995/07/09 14:29:46 davidg Exp $
+ * $Id: ip_input.c,v 1.26 1995/07/18 09:56:44 peter Exp $
  */
 
 #include <sys/param.h>
@@ -1228,6 +1228,11 @@ ip_sysctl(name, namelen, oldp, oldlenp, newp, newlen)
 	case IPCTL_RTMAXCACHE:
 		return (sysctl_int(oldp, oldlenp, newp, newlen,
 				   &rtq_toomany));
+	case IPCTL_INTRQMAXLEN:
+		return (sysctl_rdint(oldp, oldlenp, newp, 
+				     ipintrq.ifq_maxlen));
+	case IPCTL_INTRQDROPS:
+		return (sysctl_rdint(oldp, oldlenp, newp, ipintrq.ifq_drops));
 	default:
 		return (EOPNOTSUPP);
 	}