[src/trunk]: src/usr.sbin/tcpdump fix printing of IPv4 first fragment size.

[itojun <itojun%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/d3cd82ac9784
branches:  trunk
changeset: 475817:d3cd82ac9784
user:      itojun <itojun%NetBSD.org@localhost>
date:      Thu Aug 26 14:52:04 1999 +0000

description:
fix printing of IPv4 first fragment size.
(variable "len" was damaged by chained header onion-peeling code)

diffstat:

 usr.sbin/tcpdump/print-ip.c |  8 +++++---
 1 files changed, 5 insertions(+), 3 deletions(-)

diffs (43 lines):

diff -r b6ccaf2070ce -r d3cd82ac9784 usr.sbin/tcpdump/print-ip.c
--- a/usr.sbin/tcpdump/print-ip.c       Thu Aug 26 11:16:06 1999 +0000
+++ b/usr.sbin/tcpdump/print-ip.c       Thu Aug 26 14:52:04 1999 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: print-ip.c,v 1.8 1999/07/25 04:23:21 explorer Exp $    */
+/*     $NetBSD: print-ip.c,v 1.9 1999/08/26 14:52:04 itojun Exp $      */
 
 /*
  * Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997
@@ -27,7 +27,7 @@
 static const char rcsid[] =
     "@(#) Header: print-ip.c,v 1.66 97/05/28 12:51:43 leres Exp  (LBL)";
 #else
-__RCSID("$NetBSD: print-ip.c,v 1.8 1999/07/25 04:23:21 explorer Exp $");
+__RCSID("$NetBSD: print-ip.c,v 1.9 1999/08/26 14:52:04 itojun Exp $");
 #endif
 #endif
 
@@ -343,7 +343,7 @@
 ip_print(register const u_char *bp, register u_int length)
 {
        register const struct ip *ip;
-       register u_int hlen, len, off;
+       register u_int hlen, len, len0, off;
        register const u_char *cp;
        u_char nh;
        int advance;
@@ -390,6 +390,7 @@
                (void)printf("truncated-ip - %d bytes missing!",
                        len - length);
        len -= hlen;
+       len0 = len;
 
        /*
         * If this is fragment zero, hand it to the next higher
@@ -571,6 +572,7 @@
         * but the last stick a "+".  For unfragmented datagrams, note
         * the don't fragment flag.
         */
+       len = len0;
        if (off & 0x3fff) {
                /*
                 * if this isn't the first frag, we're missing the