/* * 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 1.7.2.1 2005/07/07 01:24:36 guy Exp $ (LBL)"; #endif #ifdef HAVE_CONFIG_H #include "config.h" #endif #include #include #include #include #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; /* Frame Control field determines interpretation of packet */ extracted_ethertype = 0; /* 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); }