X-Git-Url: https://git.tcpdump.org/tcpdump/blobdiff_plain/76f7f75d4a38874701c08d092fd61027a58ed859..refs/heads/tcpdump-4.1:/print-chdlc.c

diff --git a/print-chdlc.c b/print-chdlc.c
index 7354dc72..238e91a9 100644
--- a/print-chdlc.c
+++ b/print-chdlc.c
@@ -21,7 +21,7 @@
 
 #ifndef lint
 static const char rcsid[] _U_ =
-    "@(#) $Header: /tcpdump/master/tcpdump/print-chdlc.c,v 1.41 2005-11-04 18:30:21 hannes Exp $ (LBL)";
+    "@(#) $Header: /tcpdump/master/tcpdump/print-chdlc.c,v 1.43 2005-11-29 08:56:19 hannes Exp $ (LBL)";
 #endif
 
 #ifdef HAVE_CONFIG_H
@@ -66,7 +66,6 @@ chdlc_if_print(const struct pcap_pkthdr *h, register const u_char *p)
 u_int
 chdlc_print(register const u_char *p, u_int length) {
 	u_int proto;
-	const struct ip *ip;
 
 	proto = EXTRACT_16BITS(&p[2]);
 	if (eflag) {
@@ -78,39 +77,41 @@ chdlc_print(register const u_char *p, u_int length) {
 	}
 
 	length -= CHDLC_HDRLEN;
-	ip = (const struct ip *)(p + CHDLC_HDRLEN);
+	p += CHDLC_HDRLEN;
+
 	switch (proto) {
 	case ETHERTYPE_IP:
-		ip_print(gndo, (const u_char *)ip, length);
+		ip_print(gndo, p, length);
 		break;
 #ifdef INET6
 	case ETHERTYPE_IPV6:
-		ip6_print((const u_char *)ip, length);
+		ip6_print(p, length);
 		break;
 #endif
 	case CHDLC_TYPE_SLARP:
-		chdlc_slarp_print((const u_char *)ip, length);
+		chdlc_slarp_print(p, length);
 		break;
 #if 0
 	case CHDLC_TYPE_CDP:
-		chdlc_cdp_print((const u_char *)ip, length);
+		chdlc_cdp_print(p, length);
 		break;
 #endif
         case ETHERTYPE_MPLS:
         case ETHERTYPE_MPLS_MULTI:
-                mpls_print((const u_char *)(ip), length);
+                mpls_print(p, length);
 		break;
         case ETHERTYPE_ISO:
                 /* is the fudge byte set ? lets verify by spotting ISO headers */
-                if (*(p+CHDLC_HDRLEN+1) == 0x81 ||
-                    *(p+CHDLC_HDRLEN+1) == 0x82 ||
-                    *(p+CHDLC_HDRLEN+1) == 0x83)
-                    isoclns_print(p+CHDLC_HDRLEN+1, length-1, length-1);
+                if (*(p+1) == 0x81 ||
+                    *(p+1) == 0x82 ||
+                    *(p+1) == 0x83)
+                    isoclns_print(p+1, length-1, length-1);
                 else
-                    isoclns_print(p+CHDLC_HDRLEN, length, length);
+                    isoclns_print(p, length, length);
                 break;
 	default:
-                printf("unknown CHDLC protocol (0x%04x)", proto);
+                if (!eflag)
+                        printf("unknown CHDLC protocol (0x%04x)", proto);
                 break;
 	}