Move tcpdump-3.9/ to tcpdump/. No need for a versioned dir.
[dragonfly.git] / contrib / tcpdump / print-ipfc.c
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c8cf0f94
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1/*
2 * Copyright (c) 1991, 1992, 1993, 1994, 1995, 1996, 1997
3 * The Regents of the University of California. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that: (1) source code distributions
7 * retain the above copyright notice and this paragraph in its entirety, (2)
8 * distributions including binary code include the above copyright notice and
9 * this paragraph in its entirety in the documentation or other materials
10 * provided with the distribution, and (3) all advertising materials mentioning
11 * features or use of this software display the following acknowledgement:
12 * ``This product includes software developed by the University of California,
13 * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
14 * the University nor the names of its contributors may be used to endorse
15 * or promote products derived from this software without specific prior
16 * written permission.
17 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
19 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
20 */
21
22#ifndef lint
23static const char rcsid[] _U_ =
24 "@(#) $Header: /tcpdump/master/tcpdump/print-ipfc.c,v 1.7.2.2 2005/11/13 12:12:59 guy Exp $ (LBL)";
25#endif
26
27#ifdef HAVE_CONFIG_H
28#include "config.h"
29#endif
30
31#include <tcpdump-stdinc.h>
32
33#include <pcap.h>
34#include <stdio.h>
35#include <string.h>
36
37#include "interface.h"
38#include "addrtoname.h"
39#include "ethertype.h"
40
41#include "ether.h"
42#include "ipfc.h"
43
44/*
45 * RFC 2625 IP-over-Fibre Channel.
46 */
47
48/* Extract src, dst addresses */
49static inline void
50extract_ipfc_addrs(const struct ipfc_header *ipfcp, char *ipfcsrc,
51 char *ipfcdst)
52{
53 /*
54 * We assume that, as per RFC 2625, the lower 48 bits of the
55 * source and destination addresses are MAC addresses.
56 */
57 memcpy(ipfcdst, (const char *)&ipfcp->ipfc_dhost[2], 6);
58 memcpy(ipfcsrc, (const char *)&ipfcp->ipfc_shost[2], 6);
59}
60
61/*
62 * Print the Network_Header
63 */
64static inline void
65ipfc_hdr_print(register const struct ipfc_header *ipfcp _U_,
66 register u_int length, register const u_char *ipfcsrc,
67 register const u_char *ipfcdst)
68{
69 const char *srcname, *dstname;
70
71 srcname = etheraddr_string(ipfcsrc);
72 dstname = etheraddr_string(ipfcdst);
73
74 /*
75 * XXX - show the upper 16 bits? Do so only if "vflag" is set?
76 */
77 (void) printf("%s %s %d: ", srcname, dstname, length);
78}
79
80static void
81ipfc_print(const u_char *p, u_int length, u_int caplen)
82{
83 const struct ipfc_header *ipfcp = (const struct ipfc_header *)p;
84 struct ether_header ehdr;
85 u_short extracted_ethertype;
86
87 if (caplen < IPFC_HDRLEN) {
88 printf("[|ipfc]");
89 return;
90 }
91 /*
92 * Get the network addresses into a canonical form
93 */
94 extract_ipfc_addrs(ipfcp, (char *)ESRC(&ehdr), (char *)EDST(&ehdr));
95
96 if (eflag)
97 ipfc_hdr_print(ipfcp, length, ESRC(&ehdr), EDST(&ehdr));
98
99 /* Skip over Network_Header */
100 length -= IPFC_HDRLEN;
101 p += IPFC_HDRLEN;
102 caplen -= IPFC_HDRLEN;
103
104 /* Try to print the LLC-layer header & higher layers */
105 if (llc_print(p, length, caplen, ESRC(&ehdr), EDST(&ehdr),
106 &extracted_ethertype) == 0) {
107 /*
108 * Some kinds of LLC packet we cannot
109 * handle intelligently
110 */
111 if (!eflag)
112 ipfc_hdr_print(ipfcp, length + IPFC_HDRLEN,
113 ESRC(&ehdr), EDST(&ehdr));
114 if (extracted_ethertype) {
115 printf("(LLC %s) ",
116 etherproto_string(htons(extracted_ethertype)));
117 }
118 if (!suppress_default_print)
119 default_print(p, caplen);
120 }
121}
122
123/*
124 * This is the top level routine of the printer. 'p' points
125 * to the Network_Header of the packet, 'h->ts' is the timestamp,
126 * 'h->len' is the length of the packet off the wire, and 'h->caplen'
127 * is the number of bytes actually captured.
128 */
129u_int
130ipfc_if_print(const struct pcap_pkthdr *h, register const u_char *p)
131{
132 ipfc_print(p, h->len, h->caplen);
133
134 return (IPFC_HDRLEN);
135}