From 750f6aad7b4a7b2e2523c64cb3074ef4a1817f0d Mon Sep 17 00:00:00 2001
From: Alexander Langer <alex@FreeBSD.org>
Date: Fri, 8 Aug 1997 14:36:29 +0000
Subject: [PATCH] Support interface names up to 15 characters in length.  In
 order to accommodate the expanded name, the ICMP types bitmap has been
 reduced from 256 bits to 32.

A recompile of kernel and user level ipfw is required.

To be merged into 2.2 after a brief period in -current.

PR:		bin/4209
Reviewed by:	Archie Cobbs <archie@whistle.com>
---
 sbin/ipfw/ipfw.c    | 8 ++++----
 sys/netinet/ip_fw.h | 8 +++++---
 2 files changed, 9 insertions(+), 7 deletions(-)

diff --git a/sbin/ipfw/ipfw.c b/sbin/ipfw/ipfw.c
index 802e5c6d38d..fb4f577b877 100644
--- a/sbin/ipfw/ipfw.c
+++ b/sbin/ipfw/ipfw.c
@@ -16,7 +16,7 @@
  *
  * NEW command line interface for IP firewall facility
  *
- * $Id: ipfw.c,v 1.45 1997/06/23 22:32:13 julian Exp $
+ * $Id: ipfw.c,v 1.46 1997/07/25 03:13:46 brian Exp $
  *
  */
 
@@ -384,7 +384,7 @@ show_ipfw(struct ip_fw *chain)
 
 		printf(" icmptype");
 
-		for (type_index = 0; type_index < 256; ++type_index)
+		for (type_index = 0; type_index < IP_FW_ICMPTYPES_DIM * sizeof(unsigned) * 8; ++type_index)
 			if (chain->fw_icmptypes[type_index / (sizeof(unsigned) * 8)] & 
 				(1U << (type_index % (sizeof(unsigned) * 8)))) {
 				printf("%c%d", first == 1 ? ' ' : ',', type_index);
@@ -697,8 +697,8 @@ fill_icmptypes(types, vp, fw_flg)
 		if ( *c != ',' && *c != '\0' )
 			show_usage("invalid ICMP type");
 
-		if (icmptype > 255)
-			show_usage("ICMP types are between 0 and 255 inclusive");
+		if (icmptype >= IP_FW_ICMPTYPES_DIM * sizeof(unsigned) * 8)
+			show_usage("ICMP type out of range");
 
 		types[icmptype / (sizeof(unsigned) * 8)] |= 
 			1 << (icmptype % (sizeof(unsigned) * 8));
diff --git a/sys/netinet/ip_fw.h b/sys/netinet/ip_fw.h
index 96d735766da..d45be58f058 100644
--- a/sys/netinet/ip_fw.h
+++ b/sys/netinet/ip_fw.h
@@ -11,12 +11,14 @@
  *
  * This software is provided ``AS IS'' without any warranties of any kind.
  *
- *	$Id: ip_fw.h,v 1.1 1997/05/09 17:46:45 archie Exp $
+ *	$Id: ip_fw.h,v 1.27 1997/06/02 05:02:36 julian Exp $
  */
 
 #ifndef _IP_FW_H
 #define _IP_FW_H
 
+#include <net/if.h>
+
 /*
  * This union structure identifies an interface, either explicitly
  * by name or implicitly by IP address. The flags IP_FW_F_IIFNAME
@@ -33,7 +35,7 @@
 union ip_fw_if {
     struct in_addr fu_via_ip;	/* Specified by IP address */
     struct {			/* Specified by interface name */
-#define FW_IFNLEN	6	/* To keep structure on 2^x boundary */
+#define FW_IFNLEN     IFNAMSIZ
 	    char  name[FW_IFNLEN];
 	    short unit;		/* -1 means match any unit */
     } fu_via_if;
@@ -58,7 +60,7 @@ struct ip_fw {
     u_short fw_pts[IP_FW_MAX_PORTS];	/* Array of port numbers to match */
     u_char fw_ipopt,fw_ipnopt;		/* IP options set/unset */
     u_char fw_tcpf,fw_tcpnf;		/* TCP flags set/unset */
-#define IP_FW_ICMPTYPES_DIM (256 / (sizeof(unsigned) * 8))
+#define IP_FW_ICMPTYPES_DIM (32 / (sizeof(unsigned) * 8))
     unsigned fw_icmptypes[IP_FW_ICMPTYPES_DIM]; /* ICMP types bitmap */
     long timestamp;			/* timestamp (tv_sec) of last match */
     union ip_fw_if fw_in_if, fw_out_if;	/* Incoming and outgoing interfaces */