Head

GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	usr.sbin/tcpdump/print-fddi.c	Lines:	0	82	0.0 %
Date:	2017-11-13	Branches:	0	49	0.0 %


/*	$OpenBSD: print-fddi.c,v 1.17 2015/11/16 00:16:39 mmcc Exp $	*/

/*
 * 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.
 */

#ifdef HAVE_FDDI
#include <sys/time.h>
#include <sys/socket.h>
#include <sys/file.h>
#include <sys/ioctl.h>

struct mbuf;
struct rtentry;
#include <net/if.h>

#include <netinet/in.h>
#include <netinet/if_ether.h>
#include <netinet/ip.h>

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

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

#include "fddi.h"

/*
 * Some FDDI interfaces use bit-swapped addresses.
 */
#if defined(ultrix) || defined(__alpha) || defined(__bsdi) || \
	defined(__NetBSD__) || defined(__OpenBSD__)
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
 */

#define FDDI_HDRLEN (sizeof(struct fddi_header))

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)
{
	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, (char *)fddip->fddi_dhost, 6);
		memcpy(fsrc, (char *)fddip->fddi_shost, 6);
	}
}

/*
 * Print the FDDI MAC header
 */
static inline void
fddi_print(const struct fddi_header *fddip, u_int length,
	   const u_char *fsrc, const u_char *fdst)
{
	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_int length)
{
	printf("<SMT printer not yet implemented>");
}

/*
 * This is the top level routine of the printer.  'sp' is the points
 * to the FDDI header of the packet, 'tvp' is the timestamp,
 * 'length' is the length of the packet off the wire, and 'caplen'
 * is the number of bytes actually captured.
 */
void
fddi_if_print(u_char *pcap, const struct pcap_pkthdr *h,
	      const u_char *p)
{
	u_int caplen = h->caplen;
	u_int length = h->len;
	u_short extracted_ethertype;
	const struct fddi_header *fddip = (struct fddi_header *)p;
	struct ether_header ehdr;

	ts_print(&h->ts);

	if (caplen < FDDI_HDRLEN) {
		printf("[|fddi]");
		goto out;
	}
	/*
	 * Get the FDDI addresses into a canonical form
	 */
	extract_fddi_addrs(fddip, (char *)ESRC(&ehdr), (char *)EDST(&ehdr));
	/*
	 * Some printers want to get back at the link level addresses,
	 * and/or check that they're not walking off the end of the packet.
	 * Rather than pass them all the way down, we set these globals.
	 */
	snapend = p + caplen;
	/*
	 * Actually, the only printer that uses packetp is print-bootp.c,
	 * and it assumes that packetp points to an Ethernet header.  The
	 * right thing to do is to fix print-bootp.c to know which link
	 * type is in use when it excavates. XXX
	 */
	packetp = (u_char *)&ehdr;

	if (eflag)
		fddi_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 */
	extracted_ethertype = 0;
	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))
		    == 0) {
			/*
			 * Some kinds of LLC packet we cannot
			 * handle intelligently
			 */
			if (!eflag)
				fddi_print(fddip, length,
				    ESRC(&ehdr), EDST(&ehdr));
			if (extracted_ethertype) {
				printf("(LLC %s) ",
			etherproto_string(htons(extracted_ethertype)));
			}
			if (!xflag && !qflag)
				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_print(fddip, length, ESRC(&ehdr), EDST(&ehdr));
		if (!xflag && !qflag)
			default_print(p, caplen);
	}
	if (xflag)
		default_print(p, caplen);
out:
	putchar('\n');
}
#else
#include <sys/types.h>
#include <sys/time.h>

#include <stdio.h>

#include "interface.h"
void
fddi_if_print(u_char *pcap, const struct pcap_pkthdr *h,
	      const u_char *p)
{

	error("not configured for fddi");
	/* NOTREACHED */
}
#endif


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: print-fddi.c,v 1.17 2015/11/16 00:16:39 mmcc Exp $ */
2
3			/*
4			* Copyright (c) 1991, 1992, 1993, 1994, 1995, 1996, 1997
5			* The Regents of the University of California. All rights reserved.
6			*
7			* Redistribution and use in source and binary forms, with or without
8			* modification, are permitted provided that: (1) source code distributions
9			* retain the above copyright notice and this paragraph in its entirety, (2)
10			* distributions including binary code include the above copyright notice and
11			* this paragraph in its entirety in the documentation or other materials
12			* provided with the distribution, and (3) all advertising materials mentioning
13			* features or use of this software display the following acknowledgement:
14			* ``This product includes software developed by the University of California,
15			* Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
16			* the University nor the names of its contributors may be used to endorse
17			* or promote products derived from this software without specific prior
18			* written permission.
19			* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
20			* WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
21			* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
22			*/
23
24			#ifdef HAVE_FDDI
25			#include <sys/time.h>
26			#include <sys/socket.h>
27			#include <sys/file.h>
28			#include <sys/ioctl.h>
29
30			struct mbuf;
31			struct rtentry;
32			#include <net/if.h>
33
34			#include <netinet/in.h>
35			#include <netinet/if_ether.h>
36			#include <netinet/ip.h>
37
38			#include <ctype.h>
39			#include <netdb.h>
40			#include <pcap.h>
41			#include <stdio.h>
42			#include <string.h>
43
44			#include "interface.h"
45			#include "addrtoname.h"
46			#include "ethertype.h"
47
48			#include "fddi.h"
49
50			/*
51			* Some FDDI interfaces use bit-swapped addresses.
52			*/
53			#if defined(ultrix) \|\| defined(__alpha) \|\| defined(__bsdi) \|\| \
54			defined(__NetBSD__) \|\| defined(__OpenBSD__)
55			int fddi_bitswap = 0;
56			#else
57			int fddi_bitswap = 1;
58			#endif
59
60			/*
61			* FDDI support for tcpdump, by Jeffrey Mogul [DECWRL], June 1992
62			*
63			* Based in part on code by Van Jacobson, which bears this note:
64			*
65			* NOTE: This is a very preliminary hack for FDDI support.
66			* There are all sorts of wired in constants & nothing (yet)
67			* to print SMT packets as anything other than hex dumps.
68			* Most of the necessary changes are waiting on my redoing
69			* the "header" that a kernel fddi driver supplies to bpf: I
70			* want it to look like one byte of 'direction' (0 or 1
71			* depending on whether the packet was inbound or outbound),
72			* two bytes of system/driver dependent data (anything an
73			* implementor thinks would be useful to filter on and/or
74			* save per-packet, then the real 21-byte FDDI header.
75			* Steve McCanne & I have also talked about adding the
76			* 'direction' byte to all bpf headers (e.g., in the two
77			* bytes of padding on an ethernet header). It's not clear
78			* we could do this in a backwards compatible way & we hate
79			* the idea of an incompatible bpf change. Discussions are
80			* proceeding.
81			*
82			* Also, to really support FDDI (and better support 802.2
83			* over ethernet) we really need to re-think the rather simple
84			* minded assumptions about fixed length & fixed format link
85			* level headers made in gencode.c. One day...
86			*
87			* - vj
88			*/
89
90			#define FDDI_HDRLEN (sizeof(struct fddi_header))
91
92			static u_char fddi_bit_swap[] = {
93			0x00, 0x80, 0x40, 0xc0, 0x20, 0xa0, 0x60, 0xe0,
94			0x10, 0x90, 0x50, 0xd0, 0x30, 0xb0, 0x70, 0xf0,
95			0x08, 0x88, 0x48, 0xc8, 0x28, 0xa8, 0x68, 0xe8,
96			0x18, 0x98, 0x58, 0xd8, 0x38, 0xb8, 0x78, 0xf8,
97			0x04, 0x84, 0x44, 0xc4, 0x24, 0xa4, 0x64, 0xe4,
98			0x14, 0x94, 0x54, 0xd4, 0x34, 0xb4, 0x74, 0xf4,
99			0x0c, 0x8c, 0x4c, 0xcc, 0x2c, 0xac, 0x6c, 0xec,
100			0x1c, 0x9c, 0x5c, 0xdc, 0x3c, 0xbc, 0x7c, 0xfc,
101			0x02, 0x82, 0x42, 0xc2, 0x22, 0xa2, 0x62, 0xe2,
102			0x12, 0x92, 0x52, 0xd2, 0x32, 0xb2, 0x72, 0xf2,
103			0x0a, 0x8a, 0x4a, 0xca, 0x2a, 0xaa, 0x6a, 0xea,
104			0x1a, 0x9a, 0x5a, 0xda, 0x3a, 0xba, 0x7a, 0xfa,
105			0x06, 0x86, 0x46, 0xc6, 0x26, 0xa6, 0x66, 0xe6,
106			0x16, 0x96, 0x56, 0xd6, 0x36, 0xb6, 0x76, 0xf6,
107			0x0e, 0x8e, 0x4e, 0xce, 0x2e, 0xae, 0x6e, 0xee,
108			0x1e, 0x9e, 0x5e, 0xde, 0x3e, 0xbe, 0x7e, 0xfe,
109			0x01, 0x81, 0x41, 0xc1, 0x21, 0xa1, 0x61, 0xe1,
110			0x11, 0x91, 0x51, 0xd1, 0x31, 0xb1, 0x71, 0xf1,
111			0x09, 0x89, 0x49, 0xc9, 0x29, 0xa9, 0x69, 0xe9,
112			0x19, 0x99, 0x59, 0xd9, 0x39, 0xb9, 0x79, 0xf9,
113			0x05, 0x85, 0x45, 0xc5, 0x25, 0xa5, 0x65, 0xe5,
114			0x15, 0x95, 0x55, 0xd5, 0x35, 0xb5, 0x75, 0xf5,
115			0x0d, 0x8d, 0x4d, 0xcd, 0x2d, 0xad, 0x6d, 0xed,
116			0x1d, 0x9d, 0x5d, 0xdd, 0x3d, 0xbd, 0x7d, 0xfd,
117			0x03, 0x83, 0x43, 0xc3, 0x23, 0xa3, 0x63, 0xe3,
118			0x13, 0x93, 0x53, 0xd3, 0x33, 0xb3, 0x73, 0xf3,
119			0x0b, 0x8b, 0x4b, 0xcb, 0x2b, 0xab, 0x6b, 0xeb,
120			0x1b, 0x9b, 0x5b, 0xdb, 0x3b, 0xbb, 0x7b, 0xfb,
121			0x07, 0x87, 0x47, 0xc7, 0x27, 0xa7, 0x67, 0xe7,
122			0x17, 0x97, 0x57, 0xd7, 0x37, 0xb7, 0x77, 0xf7,
123			0x0f, 0x8f, 0x4f, 0xcf, 0x2f, 0xaf, 0x6f, 0xef,
124			0x1f, 0x9f, 0x5f, 0xdf, 0x3f, 0xbf, 0x7f, 0xff,
125			};
126
127			/*
128			* Print FDDI frame-control bits
129			*/
130			static inline void
131			print_fddi_fc(u_char fc)
132			{
133			switch (fc) {
134
135			case FDDIFC_VOID: /* Void frame */
136			printf("void ");
137			break;
138
139			case FDDIFC_NRT: /* Nonrestricted token */
140			printf("nrt ");
141			break;
142
143			case FDDIFC_RT: /* Restricted token */
144			printf("rt ");
145			break;
146
147			case FDDIFC_SMT_INFO: /* SMT Info */
148			printf("info ");
149			break;
150
151			case FDDIFC_SMT_NSA: /* SMT Next station adrs */
152			printf("nsa ");
153			break;
154
155			case FDDIFC_MAC_BEACON: /* MAC Beacon frame */
156			printf("beacon ");
157			break;
158
159			case FDDIFC_MAC_CLAIM: /* MAC Claim frame */
160			printf("claim ");
161			break;
162
163			default:
164			switch (fc & FDDIFC_CLFF) {
165
166			case FDDIFC_MAC:
167			printf("mac%1x ", fc & FDDIFC_ZZZZ);
168			break;
169
170			case FDDIFC_SMT:
171			printf("smt%1x ", fc & FDDIFC_ZZZZ);
172			break;
173
174			case FDDIFC_LLC_ASYNC:
175			printf("async%1x ", fc & FDDIFC_ZZZZ);
176			break;
177
178			case FDDIFC_LLC_SYNC:
179			printf("sync%1x ", fc & FDDIFC_ZZZZ);
180			break;
181
182			case FDDIFC_IMP_ASYNC:
183			printf("imp_async%1x ", fc & FDDIFC_ZZZZ);
184			break;
185
186			case FDDIFC_IMP_SYNC:
187			printf("imp_sync%1x ", fc & FDDIFC_ZZZZ);
188			break;
189
190			default:
191			printf("%02x ", fc);
192			break;
193			}
194			}
195			}
196
197			/* Extract src, dst addresses */
198			static inline void
199			extract_fddi_addrs(const struct fddi_header fddip, char fsrc, char *fdst)
200			{
201			int i;
202
203			if (fddi_bitswap) {
204			/*
205			* bit-swap the fddi addresses (isn't the IEEE standards
206			* process wonderful!) then convert them to names.
207			*/
208			for (i = 0; i < 6; ++i)
209			fdst[i] = fddi_bit_swap[fddip->fddi_dhost[i]];
210			for (i = 0; i < 6; ++i)
211			fsrc[i] = fddi_bit_swap[fddip->fddi_shost[i]];
212			}
213			else {
214			memcpy(fdst, (char *)fddip->fddi_dhost, 6);
215			memcpy(fsrc, (char *)fddip->fddi_shost, 6);
216			}
217			}
218
219			/*
220			* Print the FDDI MAC header
221			*/
222			static inline void
223			fddi_print(const struct fddi_header *fddip, u_int length,
224			const u_char fsrc, const u_char fdst)
225			{
226			char srcname, dstname;
227
228			srcname = etheraddr_string(fsrc);
229			dstname = etheraddr_string(fdst);
230
231			if (vflag)
232			(void) printf("%02x %s %s %d: ",
233			fddip->fddi_fc,
234			srcname, dstname,
235			length);
236			else if (qflag)
237			printf("%s %s %d: ", srcname, dstname, length);
238			else {
239			(void) print_fddi_fc(fddip->fddi_fc);
240			(void) printf("%s %s %d: ", srcname, dstname, length);
241			}
242			}
243
244			static inline void
245			fddi_smt_print(const u_char *p, u_int length)
246			{
247			printf("<SMT printer not yet implemented>");
248			}
249
250			/*
251			* This is the top level routine of the printer. 'sp' is the points
252			* to the FDDI header of the packet, 'tvp' is the timestamp,
253			* 'length' is the length of the packet off the wire, and 'caplen'
254			* is the number of bytes actually captured.
255			*/
256			void
257			fddi_if_print(u_char pcap, const struct pcap_pkthdr h,
258			const u_char *p)
259			{
260			u_int caplen = h->caplen;
261			u_int length = h->len;
262			u_short extracted_ethertype;
263			const struct fddi_header fddip = (struct fddi_header )p;
264			struct ether_header ehdr;
265
266			ts_print(&h->ts);
267
268			if (caplen < FDDI_HDRLEN) {
269			printf("[\|fddi]");
270			goto out;
271			}
272			/*
273			* Get the FDDI addresses into a canonical form
274			*/
275			extract_fddi_addrs(fddip, (char )ESRC(&ehdr), (char )EDST(&ehdr));
276			/*
277			* Some printers want to get back at the link level addresses,
278			* and/or check that they're not walking off the end of the packet.
279			* Rather than pass them all the way down, we set these globals.
280			*/
281			snapend = p + caplen;
282			/*
283			* Actually, the only printer that uses packetp is print-bootp.c,
284			* and it assumes that packetp points to an Ethernet header. The
285			* right thing to do is to fix print-bootp.c to know which link
286			* type is in use when it excavates. XXX
287			*/
288			packetp = (u_char *)&ehdr;
289
290			if (eflag)
291			fddi_print(fddip, length, ESRC(&ehdr), EDST(&ehdr));
292
293			/* Skip over FDDI MAC header */
294			length -= FDDI_HDRLEN;
295			p += FDDI_HDRLEN;
296			caplen -= FDDI_HDRLEN;
297
298			/* Frame Control field determines interpretation of packet */
299			extracted_ethertype = 0;
300			if ((fddip->fddi_fc & FDDIFC_CLFF) == FDDIFC_LLC_ASYNC) {
301			/* Try to print the LLC-layer header & higher layers */
302			if (llc_print(p, length, caplen, ESRC(&ehdr), EDST(&ehdr))
303			== 0) {
304			/*
305			* Some kinds of LLC packet we cannot
306			* handle intelligently
307			*/
308			if (!eflag)
309			fddi_print(fddip, length,
310			ESRC(&ehdr), EDST(&ehdr));
311			if (extracted_ethertype) {
312			printf("(LLC %s) ",
313			etherproto_string(htons(extracted_ethertype)));
314			}
315			if (!xflag && !qflag)
316			default_print(p, caplen);
317			}
318			} else if ((fddip->fddi_fc & FDDIFC_CLFF) == FDDIFC_SMT)
319			fddi_smt_print(p, caplen);
320			else {
321			/* Some kinds of FDDI packet we cannot handle intelligently */
322			if (!eflag)
323			fddi_print(fddip, length, ESRC(&ehdr), EDST(&ehdr));
324			if (!xflag && !qflag)
325			default_print(p, caplen);
326			}
327			if (xflag)
328			default_print(p, caplen);
329			out:
330			putchar('\n');
331			}
332			#else
333			#include <sys/types.h>
334			#include <sys/time.h>
335
336			#include <stdio.h>
337
338			#include "interface.h"
339			void
340			fddi_if_print(u_char pcap, const struct pcap_pkthdr h,
341			const u_char *p)
342			{
343
344			error("not configured for fddi");
345			/* NOTREACHED */
346			}
347			#endif