diff options
Diffstat (limited to 'freebsd/contrib/tcpdump/print-ipfc.c')
| -rw-r--r-- | freebsd/contrib/tcpdump/print-ipfc.c | 137 |
1 files changed, 137 insertions, 0 deletions
diff --git a/freebsd/contrib/tcpdump/print-ipfc.c b/freebsd/contrib/tcpdump/print-ipfc.c new file mode 100644 index 00000000..4e431d32 --- /dev/null +++ b/freebsd/contrib/tcpdump/print-ipfc.c @@ -0,0 +1,137 @@ +#include <machine/rtems-bsd-user-space.h> + +/* + * 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-ipfc.c,v 1.9 2005-11-13 12:12:42 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 "ipfc.h" + +/* + * RFC 2625 IP-over-Fibre Channel. + */ + +/* Extract src, dst addresses */ +static inline void +extract_ipfc_addrs(const struct ipfc_header *ipfcp, char *ipfcsrc, + char *ipfcdst) +{ + /* + * We assume that, as per RFC 2625, the lower 48 bits of the + * source and destination addresses are MAC addresses. + */ + memcpy(ipfcdst, (const char *)&ipfcp->ipfc_dhost[2], 6); + memcpy(ipfcsrc, (const char *)&ipfcp->ipfc_shost[2], 6); +} + +/* + * Print the Network_Header + */ +static inline void +ipfc_hdr_print(register const struct ipfc_header *ipfcp _U_, + register u_int length, register const u_char *ipfcsrc, + register const u_char *ipfcdst) +{ + const char *srcname, *dstname; + + srcname = etheraddr_string(ipfcsrc); + dstname = etheraddr_string(ipfcdst); + + /* + * XXX - show the upper 16 bits? Do so only if "vflag" is set? + */ + (void) printf("%s %s %d: ", srcname, dstname, length); +} + +static void +ipfc_print(const u_char *p, u_int length, u_int caplen) +{ + const struct ipfc_header *ipfcp = (const struct ipfc_header *)p; + struct ether_header ehdr; + u_short extracted_ethertype; + + if (caplen < IPFC_HDRLEN) { + printf("[|ipfc]"); + return; + } + /* + * Get the network addresses into a canonical form + */ + extract_ipfc_addrs(ipfcp, (char *)ESRC(&ehdr), (char *)EDST(&ehdr)); + + if (eflag) + ipfc_hdr_print(ipfcp, length, ESRC(&ehdr), EDST(&ehdr)); + + /* Skip over Network_Header */ + length -= IPFC_HDRLEN; + p += IPFC_HDRLEN; + caplen -= IPFC_HDRLEN; + + /* 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) + ipfc_hdr_print(ipfcp, length + IPFC_HDRLEN, + ESRC(&ehdr), EDST(&ehdr)); + if (extracted_ethertype) { + printf("(LLC %s) ", + etherproto_string(htons(extracted_ethertype))); + } + if (!suppress_default_print) + default_print(p, caplen); + } +} + +/* + * This is the top level routine of the printer. 'p' points + * to the Network_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 +ipfc_if_print(const struct pcap_pkthdr *h, register const u_char *p) +{ + ipfc_print(p, h->len, h->caplen); + + return (IPFC_HDRLEN); +} |