print-fddi.c - platform/external/tcpdump - Git at Google

 /*
  * Copyright (c) 1991, 1992, 1993, 1994, 1995, 1996, 1997
  *	The Regents of the University of California.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that: (1) source code distributions
  * retain the above copyright notice and this paragraph in its entirety, (2)
  * distributions including binary code include the above copyright notice and
  * this paragraph in its entirety in the documentation or other materials
  * provided with the distribution, and (3) all advertising materials mentioning
  * features or use of this software display the following acknowledgement:
  * ``This product includes software developed by the University of California,
  * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
  * the University nor the names of its contributors may be used to endorse
  * or promote products derived from this software without specific prior
  * written permission.
  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
  * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  */

 #ifndef lint
 static const char rcsid[] _U_ =
     "@(#) $Header: /tcpdump/master/tcpdump/print-fddi.c,v 1.64.2.2 2005/11/13 12:12:59 guy Exp $ (LBL)";
 #endif

 #ifdef HAVE_CONFIG_H
 #include "config.h"
 #endif

 #include <tcpdump-stdinc.h>

 #include <pcap.h>
 #include <stdio.h>
 #include <string.h>

 #include "interface.h"
 #include "addrtoname.h"
 #include "ethertype.h"

 #include "ether.h"
 #include "fddi.h"

 /*
  * Some FDDI interfaces use bit-swapped addresses.
  */
 #if defined(ultrix) || defined(__alpha) || defined(__bsdi) || defined(__NetBSD__) || defined(__linux__)
 int	fddi_bitswap = 0;
 #else
 int	fddi_bitswap = 1;
 #endif

 /*
  * FDDI support for tcpdump, by Jeffrey Mogul [DECWRL], June 1992
  *
  * Based in part on code by Van Jacobson, which bears this note:
  *
  * NOTE:  This is a very preliminary hack for FDDI support.
  * There are all sorts of wired in constants & nothing (yet)
  * to print SMT packets as anything other than hex dumps.
  * Most of the necessary changes are waiting on my redoing
  * the "header" that a kernel fddi driver supplies to bpf:  I
  * want it to look like one byte of 'direction' (0 or 1
  * depending on whether the packet was inbound or outbound),
  * two bytes of system/driver dependent data (anything an
  * implementor thinks would be useful to filter on and/or
  * save per-packet, then the real 21-byte FDDI header.
  * Steve McCanne & I have also talked about adding the
  * 'direction' byte to all bpf headers (e.g., in the two
  * bytes of padding on an ethernet header).  It's not clear
  * we could do this in a backwards compatible way & we hate
  * the idea of an incompatible bpf change.  Discussions are
  * proceeding.
  *
  * Also, to really support FDDI (and better support 802.2
  * over ethernet) we really need to re-think the rather simple
  * minded assumptions about fixed length & fixed format link
  * level headers made in gencode.c.  One day...
  *
  *  - vj
  */

 static u_char fddi_bit_swap[] = {
 	0x00, 0x80, 0x40, 0xc0, 0x20, 0xa0, 0x60, 0xe0,
 	0x10, 0x90, 0x50, 0xd0, 0x30, 0xb0, 0x70, 0xf0,
 	0x08, 0x88, 0x48, 0xc8, 0x28, 0xa8, 0x68, 0xe8,
 	0x18, 0x98, 0x58, 0xd8, 0x38, 0xb8, 0x78, 0xf8,
 	0x04, 0x84, 0x44, 0xc4, 0x24, 0xa4, 0x64, 0xe4,
 	0x14, 0x94, 0x54, 0xd4, 0x34, 0xb4, 0x74, 0xf4,
 	0x0c, 0x8c, 0x4c, 0xcc, 0x2c, 0xac, 0x6c, 0xec,
 	0x1c, 0x9c, 0x5c, 0xdc, 0x3c, 0xbc, 0x7c, 0xfc,
 	0x02, 0x82, 0x42, 0xc2, 0x22, 0xa2, 0x62, 0xe2,
 	0x12, 0x92, 0x52, 0xd2, 0x32, 0xb2, 0x72, 0xf2,
 	0x0a, 0x8a, 0x4a, 0xca, 0x2a, 0xaa, 0x6a, 0xea,
 	0x1a, 0x9a, 0x5a, 0xda, 0x3a, 0xba, 0x7a, 0xfa,
 	0x06, 0x86, 0x46, 0xc6, 0x26, 0xa6, 0x66, 0xe6,
 	0x16, 0x96, 0x56, 0xd6, 0x36, 0xb6, 0x76, 0xf6,
 	0x0e, 0x8e, 0x4e, 0xce, 0x2e, 0xae, 0x6e, 0xee,
 	0x1e, 0x9e, 0x5e, 0xde, 0x3e, 0xbe, 0x7e, 0xfe,
 	0x01, 0x81, 0x41, 0xc1, 0x21, 0xa1, 0x61, 0xe1,
 	0x11, 0x91, 0x51, 0xd1, 0x31, 0xb1, 0x71, 0xf1,
 	0x09, 0x89, 0x49, 0xc9, 0x29, 0xa9, 0x69, 0xe9,
 	0x19, 0x99, 0x59, 0xd9, 0x39, 0xb9, 0x79, 0xf9,
 	0x05, 0x85, 0x45, 0xc5, 0x25, 0xa5, 0x65, 0xe5,
 	0x15, 0x95, 0x55, 0xd5, 0x35, 0xb5, 0x75, 0xf5,
 	0x0d, 0x8d, 0x4d, 0xcd, 0x2d, 0xad, 0x6d, 0xed,
 	0x1d, 0x9d, 0x5d, 0xdd, 0x3d, 0xbd, 0x7d, 0xfd,
 	0x03, 0x83, 0x43, 0xc3, 0x23, 0xa3, 0x63, 0xe3,
 	0x13, 0x93, 0x53, 0xd3, 0x33, 0xb3, 0x73, 0xf3,
 	0x0b, 0x8b, 0x4b, 0xcb, 0x2b, 0xab, 0x6b, 0xeb,
 	0x1b, 0x9b, 0x5b, 0xdb, 0x3b, 0xbb, 0x7b, 0xfb,
 	0x07, 0x87, 0x47, 0xc7, 0x27, 0xa7, 0x67, 0xe7,
 	0x17, 0x97, 0x57, 0xd7, 0x37, 0xb7, 0x77, 0xf7,
 	0x0f, 0x8f, 0x4f, 0xcf, 0x2f, 0xaf, 0x6f, 0xef,
 	0x1f, 0x9f, 0x5f, 0xdf, 0x3f, 0xbf, 0x7f, 0xff,
 };

 /*
  * Print FDDI frame-control bits
  */
 static inline void
 print_fddi_fc(u_char fc)
 {
 	switch (fc) {

 	case FDDIFC_VOID:                         /* Void frame */
 		printf("void ");
 		break;

 	case FDDIFC_NRT:                          /* Nonrestricted token */
 		printf("nrt ");
 		break;

 	case FDDIFC_RT:                           /* Restricted token */
 		printf("rt ");
 		break;

 	case FDDIFC_SMT_INFO:                     /* SMT Info */
 		printf("info ");
 		break;

 	case FDDIFC_SMT_NSA:                      /* SMT Next station adrs */
 		printf("nsa ");
 		break;

 	case FDDIFC_MAC_BEACON:                   /* MAC Beacon frame */
 		printf("beacon ");
 		break;

 	case FDDIFC_MAC_CLAIM:                    /* MAC Claim frame */
 		printf("claim ");
 		break;

 	default:
 		switch (fc & FDDIFC_CLFF) {

 		case FDDIFC_MAC:
 			printf("mac%1x ", fc & FDDIFC_ZZZZ);
 			break;

 		case FDDIFC_SMT:
 			printf("smt%1x ", fc & FDDIFC_ZZZZ);
 			break;

 		case FDDIFC_LLC_ASYNC:
 			printf("async%1x ", fc & FDDIFC_ZZZZ);
 			break;

 		case FDDIFC_LLC_SYNC:
 			printf("sync%1x ", fc & FDDIFC_ZZZZ);
 			break;

 		case FDDIFC_IMP_ASYNC:
 			printf("imp_async%1x ", fc & FDDIFC_ZZZZ);
 			break;

 		case FDDIFC_IMP_SYNC:
 			printf("imp_sync%1x ", fc & FDDIFC_ZZZZ);
 			break;

 		default:
 			printf("%02x ", fc);
 			break;
 		}
 	}
 }

 /* Extract src, dst addresses */
 static inline void
 extract_fddi_addrs(const struct fddi_header *fddip, char *fsrc, char *fdst)
 {
 	register int i;

 	if (fddi_bitswap) {
 		/*
 		 * bit-swap the fddi addresses (isn't the IEEE standards
 		 * process wonderful!) then convert them to names.
 		 */
 		for (i = 0; i < 6; ++i)
 			fdst[i] = fddi_bit_swap[fddip->fddi_dhost[i]];
 		for (i = 0; i < 6; ++i)
 			fsrc[i] = fddi_bit_swap[fddip->fddi_shost[i]];
 	}
 	else {
 		memcpy(fdst, (const char *)fddip->fddi_dhost, 6);
 		memcpy(fsrc, (const char *)fddip->fddi_shost, 6);
 	}
 }

 /*
  * Print the FDDI MAC header
  */
 static inline void
 fddi_hdr_print(register const struct fddi_header *fddip, register u_int length,
 	   register const u_char *fsrc, register const u_char *fdst)
 {
 	const char *srcname, *dstname;

 	srcname = etheraddr_string(fsrc);
 	dstname = etheraddr_string(fdst);

 	if (vflag)
 		(void) printf("%02x %s %s %d: ",
 		       fddip->fddi_fc,
 		       srcname, dstname,
 		       length);
 	else if (qflag)
 		printf("%s %s %d: ", srcname, dstname, length);
 	else {
 		(void) print_fddi_fc(fddip->fddi_fc);
 		(void) printf("%s %s %d: ", srcname, dstname, length);
 	}
 }

 static inline void
 fddi_smt_print(const u_char *p _U_, u_int length _U_)
 {
 	printf("<SMT printer not yet implemented>");
 }

 void
 fddi_print(const u_char *p, u_int length, u_int caplen)
 {
 	const struct fddi_header *fddip = (const struct fddi_header *)p;
 	struct ether_header ehdr;
 	u_short extracted_ethertype;

 	if (caplen < FDDI_HDRLEN) {
 		printf("[|fddi]");
 		return;
 	}

 	/*
 	 * Get the FDDI addresses into a canonical form
 	 */
 	extract_fddi_addrs(fddip, (char *)ESRC(&ehdr), (char *)EDST(&ehdr));

 	if (eflag)
 		fddi_hdr_print(fddip, length, ESRC(&ehdr), EDST(&ehdr));

 	/* Skip over FDDI MAC header */
 	length -= FDDI_HDRLEN;
 	p += FDDI_HDRLEN;
 	caplen -= FDDI_HDRLEN;

 	/* Frame Control field determines interpretation of packet */
 	if ((fddip->fddi_fc & FDDIFC_CLFF) == FDDIFC_LLC_ASYNC) {
 		/* Try to print the LLC-layer header & higher layers */
 		if (llc_print(p, length, caplen, ESRC(&ehdr), EDST(&ehdr),
 		    &extracted_ethertype) == 0) {
 			/*
 			 * Some kinds of LLC packet we cannot
 			 * handle intelligently
 			 */
 			if (!eflag)
 				fddi_hdr_print(fddip, length + FDDI_HDRLEN,
 				    ESRC(&ehdr), EDST(&ehdr));
 			if (extracted_ethertype) {
 				printf("(LLC %s) ",
 			etherproto_string(htons(extracted_ethertype)));
 			}
 			if (!suppress_default_print)
 				default_print(p, caplen);
 		}
 	} else if ((fddip->fddi_fc & FDDIFC_CLFF) == FDDIFC_SMT)
 		fddi_smt_print(p, caplen);
 	else {
 		/* Some kinds of FDDI packet we cannot handle intelligently */
 		if (!eflag)
 			fddi_hdr_print(fddip, length + FDDI_HDRLEN, ESRC(&ehdr),
 			    EDST(&ehdr));
 		if (!suppress_default_print)
 			default_print(p, caplen);
 	}
 }

 /*
  * This is the top level routine of the printer.  'p' points
  * to the FDDI header of the packet, 'h->ts' is the timestamp,
  * 'h->len' is the length of the packet off the wire, and 'h->caplen'
  * is the number of bytes actually captured.
  */
 u_int
 fddi_if_print(const struct pcap_pkthdr *h, register const u_char *p)
 {
 	fddi_print(p, h->len, h->caplen);

 	return (FDDI_HDRLEN);
 }
	/*
	* Copyright (c) 1991, 1992, 1993, 1994, 1995, 1996, 1997
	* The Regents of the University of California. All rights reserved.
	*
	* Redistribution and use in source and binary forms, with or without
	* modification, are permitted provided that: (1) source code distributions
	* retain the above copyright notice and this paragraph in its entirety, (2)
	* distributions including binary code include the above copyright notice and
	* this paragraph in its entirety in the documentation or other materials
	* provided with the distribution, and (3) all advertising materials mentioning
	* features or use of this software display the following acknowledgement:
	* ``This product includes software developed by the University of California,
	* Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
	* the University nor the names of its contributors may be used to endorse
	* or promote products derived from this software without specific prior
	* written permission.
	* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
	* WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
	* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
	*/

	#ifndef lint
	static const char rcsid[] _U_ =
	"@(#) $Header: /tcpdump/master/tcpdump/print-fddi.c,v 1.64.2.2 2005/11/13 12:12:59 guy Exp $ (LBL)";
	#endif

	#ifdef HAVE_CONFIG_H
	#include "config.h"
	#endif

	#include <tcpdump-stdinc.h>

	#include <pcap.h>
	#include <stdio.h>
	#include <string.h>

	#include "interface.h"
	#include "addrtoname.h"
	#include "ethertype.h"

	#include "ether.h"
	#include "fddi.h"

	/*
	* Some FDDI interfaces use bit-swapped addresses.
	*/
	#if defined(ultrix) \|\| defined(__alpha) \|\| defined(__bsdi) \|\| defined(__NetBSD__) \|\| defined(__linux__)
	int fddi_bitswap = 0;
	#else
	int fddi_bitswap = 1;
	#endif

	/*
	* FDDI support for tcpdump, by Jeffrey Mogul [DECWRL], June 1992
	*
	* Based in part on code by Van Jacobson, which bears this note:
	*
	* NOTE: This is a very preliminary hack for FDDI support.
	* There are all sorts of wired in constants & nothing (yet)
	* to print SMT packets as anything other than hex dumps.
	* Most of the necessary changes are waiting on my redoing
	* the "header" that a kernel fddi driver supplies to bpf: I
	* want it to look like one byte of 'direction' (0 or 1
	* depending on whether the packet was inbound or outbound),
	* two bytes of system/driver dependent data (anything an
	* implementor thinks would be useful to filter on and/or
	* save per-packet, then the real 21-byte FDDI header.
	* Steve McCanne & I have also talked about adding the
	* 'direction' byte to all bpf headers (e.g., in the two
	* bytes of padding on an ethernet header). It's not clear
	* we could do this in a backwards compatible way & we hate
	* the idea of an incompatible bpf change. Discussions are
	* proceeding.
	*
	* Also, to really support FDDI (and better support 802.2
	* over ethernet) we really need to re-think the rather simple
	* minded assumptions about fixed length & fixed format link
	* level headers made in gencode.c. One day...
	*
	* - vj
	*/

	static u_char fddi_bit_swap[] = {
	0x00, 0x80, 0x40, 0xc0, 0x20, 0xa0, 0x60, 0xe0,
	0x10, 0x90, 0x50, 0xd0, 0x30, 0xb0, 0x70, 0xf0,
	0x08, 0x88, 0x48, 0xc8, 0x28, 0xa8, 0x68, 0xe8,
	0x18, 0x98, 0x58, 0xd8, 0x38, 0xb8, 0x78, 0xf8,
	0x04, 0x84, 0x44, 0xc4, 0x24, 0xa4, 0x64, 0xe4,
	0x14, 0x94, 0x54, 0xd4, 0x34, 0xb4, 0x74, 0xf4,
	0x0c, 0x8c, 0x4c, 0xcc, 0x2c, 0xac, 0x6c, 0xec,
	0x1c, 0x9c, 0x5c, 0xdc, 0x3c, 0xbc, 0x7c, 0xfc,
	0x02, 0x82, 0x42, 0xc2, 0x22, 0xa2, 0x62, 0xe2,
	0x12, 0x92, 0x52, 0xd2, 0x32, 0xb2, 0x72, 0xf2,
	0x0a, 0x8a, 0x4a, 0xca, 0x2a, 0xaa, 0x6a, 0xea,
	0x1a, 0x9a, 0x5a, 0xda, 0x3a, 0xba, 0x7a, 0xfa,
	0x06, 0x86, 0x46, 0xc6, 0x26, 0xa6, 0x66, 0xe6,
	0x16, 0x96, 0x56, 0xd6, 0x36, 0xb6, 0x76, 0xf6,
	0x0e, 0x8e, 0x4e, 0xce, 0x2e, 0xae, 0x6e, 0xee,
	0x1e, 0x9e, 0x5e, 0xde, 0x3e, 0xbe, 0x7e, 0xfe,
	0x01, 0x81, 0x41, 0xc1, 0x21, 0xa1, 0x61, 0xe1,
	0x11, 0x91, 0x51, 0xd1, 0x31, 0xb1, 0x71, 0xf1,
	0x09, 0x89, 0x49, 0xc9, 0x29, 0xa9, 0x69, 0xe9,
	0x19, 0x99, 0x59, 0xd9, 0x39, 0xb9, 0x79, 0xf9,
	0x05, 0x85, 0x45, 0xc5, 0x25, 0xa5, 0x65, 0xe5,
	0x15, 0x95, 0x55, 0xd5, 0x35, 0xb5, 0x75, 0xf5,
	0x0d, 0x8d, 0x4d, 0xcd, 0x2d, 0xad, 0x6d, 0xed,
	0x1d, 0x9d, 0x5d, 0xdd, 0x3d, 0xbd, 0x7d, 0xfd,
	0x03, 0x83, 0x43, 0xc3, 0x23, 0xa3, 0x63, 0xe3,
	0x13, 0x93, 0x53, 0xd3, 0x33, 0xb3, 0x73, 0xf3,
	0x0b, 0x8b, 0x4b, 0xcb, 0x2b, 0xab, 0x6b, 0xeb,
	0x1b, 0x9b, 0x5b, 0xdb, 0x3b, 0xbb, 0x7b, 0xfb,
	0x07, 0x87, 0x47, 0xc7, 0x27, 0xa7, 0x67, 0xe7,
	0x17, 0x97, 0x57, 0xd7, 0x37, 0xb7, 0x77, 0xf7,
	0x0f, 0x8f, 0x4f, 0xcf, 0x2f, 0xaf, 0x6f, 0xef,
	0x1f, 0x9f, 0x5f, 0xdf, 0x3f, 0xbf, 0x7f, 0xff,
	};

	/*
	* Print FDDI frame-control bits
	*/
	static inline void
	print_fddi_fc(u_char fc)
	{
	switch (fc) {

	case FDDIFC_VOID: /* Void frame */
	printf("void ");
	break;

	case FDDIFC_NRT: /* Nonrestricted token */
	printf("nrt ");
	break;

	case FDDIFC_RT: /* Restricted token */
	printf("rt ");
	break;

	case FDDIFC_SMT_INFO: /* SMT Info */
	printf("info ");
	break;

	case FDDIFC_SMT_NSA: /* SMT Next station adrs */
	printf("nsa ");
	break;

	case FDDIFC_MAC_BEACON: /* MAC Beacon frame */
	printf("beacon ");
	break;

	case FDDIFC_MAC_CLAIM: /* MAC Claim frame */
	printf("claim ");
	break;

	default:
	switch (fc & FDDIFC_CLFF) {

	case FDDIFC_MAC:
	printf("mac%1x ", fc & FDDIFC_ZZZZ);
	break;

	case FDDIFC_SMT:
	printf("smt%1x ", fc & FDDIFC_ZZZZ);
	break;

	case FDDIFC_LLC_ASYNC:
	printf("async%1x ", fc & FDDIFC_ZZZZ);
	break;

	case FDDIFC_LLC_SYNC:
	printf("sync%1x ", fc & FDDIFC_ZZZZ);
	break;

	case FDDIFC_IMP_ASYNC:
	printf("imp_async%1x ", fc & FDDIFC_ZZZZ);
	break;

	case FDDIFC_IMP_SYNC:
	printf("imp_sync%1x ", fc & FDDIFC_ZZZZ);
	break;

	default:
	printf("%02x ", fc);
	break;
	}
	}
	}

	/* Extract src, dst addresses */
	static inline void
	extract_fddi_addrs(const struct fddi_header fddip, char fsrc, char *fdst)
	{
	register int i;

	if (fddi_bitswap) {
	/*
	* bit-swap the fddi addresses (isn't the IEEE standards
	* process wonderful!) then convert them to names.
	*/
	for (i = 0; i < 6; ++i)
	fdst[i] = fddi_bit_swap[fddip->fddi_dhost[i]];
	for (i = 0; i < 6; ++i)
	fsrc[i] = fddi_bit_swap[fddip->fddi_shost[i]];
	}
	else {
	memcpy(fdst, (const char *)fddip->fddi_dhost, 6);
	memcpy(fsrc, (const char *)fddip->fddi_shost, 6);
	}
	}

	/*
	* Print the FDDI MAC header
	*/
	static inline void
	fddi_hdr_print(register const struct fddi_header *fddip, register u_int length,
	register const u_char fsrc, register const u_char fdst)
	{
	const char srcname, dstname;

	srcname = etheraddr_string(fsrc);
	dstname = etheraddr_string(fdst);

	if (vflag)
	(void) printf("%02x %s %s %d: ",
	fddip->fddi_fc,
	srcname, dstname,
	length);
	else if (qflag)
	printf("%s %s %d: ", srcname, dstname, length);
	else {
	(void) print_fddi_fc(fddip->fddi_fc);
	(void) printf("%s %s %d: ", srcname, dstname, length);
	}
	}

	static inline void
	fddi_smt_print(const u_char *p _U_, u_int length _U_)
	{
	printf("<SMT printer not yet implemented>");
	}

	void
	fddi_print(const u_char *p, u_int length, u_int caplen)
	{
	const struct fddi_header fddip = (const struct fddi_header )p;
	struct ether_header ehdr;
	u_short extracted_ethertype;

	if (caplen < FDDI_HDRLEN) {
	printf("[\|fddi]");
	return;
	}

	/*
	* Get the FDDI addresses into a canonical form
	*/
	extract_fddi_addrs(fddip, (char )ESRC(&ehdr), (char )EDST(&ehdr));

	if (eflag)
	fddi_hdr_print(fddip, length, ESRC(&ehdr), EDST(&ehdr));

	/* Skip over FDDI MAC header */
	length -= FDDI_HDRLEN;
	p += FDDI_HDRLEN;
	caplen -= FDDI_HDRLEN;

	/* Frame Control field determines interpretation of packet */
	if ((fddip->fddi_fc & FDDIFC_CLFF) == FDDIFC_LLC_ASYNC) {
	/* Try to print the LLC-layer header & higher layers */
	if (llc_print(p, length, caplen, ESRC(&ehdr), EDST(&ehdr),
	&extracted_ethertype) == 0) {
	/*
	* Some kinds of LLC packet we cannot
	* handle intelligently
	*/
	if (!eflag)
	fddi_hdr_print(fddip, length + FDDI_HDRLEN,
	ESRC(&ehdr), EDST(&ehdr));
	if (extracted_ethertype) {
	printf("(LLC %s) ",
	etherproto_string(htons(extracted_ethertype)));
	}
	if (!suppress_default_print)
	default_print(p, caplen);
	}
	} else if ((fddip->fddi_fc & FDDIFC_CLFF) == FDDIFC_SMT)
	fddi_smt_print(p, caplen);
	else {
	/* Some kinds of FDDI packet we cannot handle intelligently */
	if (!eflag)
	fddi_hdr_print(fddip, length + FDDI_HDRLEN, ESRC(&ehdr),
	EDST(&ehdr));
	if (!suppress_default_print)
	default_print(p, caplen);
	}
	}

	/*
	* This is the top level routine of the printer. 'p' points
	* to the FDDI header of the packet, 'h->ts' is the timestamp,
	* 'h->len' is the length of the packet off the wire, and 'h->caplen'
	* is the number of bytes actually captured.
	*/
	u_int
	fddi_if_print(const struct pcap_pkthdr h, register const u_char p)
	{
	fddi_print(p, h->len, h->caplen);

	return (FDDI_HDRLEN);
	}