/* * Marko Kiiskila carnil@cs.tut.fi * * Tampere University of Technology - Telecommunications Laboratory * * Permission to use, copy, modify and distribute this * software and its documentation is hereby granted, * provided that both the copyright notice and this * permission notice appear in all copies of the software, * derivative works or modified versions, and any portions * thereof, that both notices appear in supporting * documentation, and that the use of this software is * acknowledged in any publications resulting from using * the software. * * TUT ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" * CONDITION AND DISCLAIMS ANY LIABILITY OF ANY KIND FOR * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS * SOFTWARE. * */ #ifndef lint static const char rcsid[] _U_ = "@(#) $Header: /tcpdump/master/tcpdump/print-lane.c,v 1.23.2.1 2005/07/07 01:24:37 guy Exp $ (LBL)"; #endif #ifdef HAVE_CONFIG_H #include "config.h" #endif #include #include #include #include "interface.h" #include "addrtoname.h" #include "extract.h" #include "ether.h" #include "lane.h" static const struct tok lecop2str[] = { { 0x0001, "configure request" }, { 0x0101, "configure response" }, { 0x0002, "join request" }, { 0x0102, "join response" }, { 0x0003, "ready query" }, { 0x0103, "ready indication" }, { 0x0004, "register request" }, { 0x0104, "register response" }, { 0x0005, "unregister request" }, { 0x0105, "unregister response" }, { 0x0006, "ARP request" }, { 0x0106, "ARP response" }, { 0x0007, "flush request" }, { 0x0107, "flush response" }, { 0x0008, "NARP request" }, { 0x0009, "topology request" }, { 0, NULL } }; static inline void lane_hdr_print(register const u_char *bp, int length) { register const struct lecdatahdr_8023 *ep; ep = (const struct lecdatahdr_8023 *)bp; if (qflag) (void)printf("lecid:%x %s %s %d: ", EXTRACT_16BITS(&ep->le_header), etheraddr_string(ep->h_source), etheraddr_string(ep->h_dest), length); else (void)printf("lecid:%x %s %s %s %d: ", EXTRACT_16BITS(&ep->le_header), etheraddr_string(ep->h_source), etheraddr_string(ep->h_dest), etherproto_string(ep->h_type), length); } /* * This is the top level routine of the printer. 'p' points * to the LANE 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. * * This assumes 802.3, not 802.5, LAN emulation. */ void lane_print(const u_char *p, u_int length, u_int caplen) { struct lane_controlhdr *lec; struct lecdatahdr_8023 *ep; u_short ether_type; u_short extracted_ethertype; if (caplen < sizeof(struct lane_controlhdr)) { printf("[|lane]"); return; } lec = (struct lane_controlhdr *)p; if (EXTRACT_16BITS(&lec->lec_header) == 0xff00) { /* * LE Control. */ printf("lec: proto %x vers %x %s", lec->lec_proto, lec->lec_vers, tok2str(lecop2str, "opcode-#%u", EXTRACT_16BITS(&lec->lec_opcode))); return; } if (caplen < sizeof(struct lecdatahdr_8023)) { printf("[|lane]"); return; } if (eflag) lane_hdr_print(p, length); /* * Go past the LANE header. */ length -= sizeof(struct lecdatahdr_8023); caplen -= sizeof(struct lecdatahdr_8023); ep = (struct lecdatahdr_8023 *)p; p += sizeof(struct lecdatahdr_8023); ether_type = EXTRACT_16BITS(&ep->h_type); /* * Is it (gag) an 802.3 encapsulation? */ extracted_ethertype = 0; if (ether_type <= ETHERMTU) { /* Try to print the LLC-layer header & higher layers */ if (llc_print(p, length, caplen, ep->h_source, ep->h_dest, &extracted_ethertype) == 0) { /* ether_type not known, print raw packet */ if (!eflag) lane_hdr_print((u_char *)ep, length + sizeof(*ep)); if (extracted_ethertype) { printf("(LLC %s) ", etherproto_string(htons(extracted_ethertype))); } if (!suppress_default_print) default_print(p, caplen); } } else if (ether_encap_print(ether_type, p, length, caplen, &extracted_ethertype) == 0) { /* ether_type not known, print raw packet */ if (!eflag) lane_hdr_print((u_char *)ep, length + sizeof(*ep)); if (!suppress_default_print) default_print(p, caplen); } } u_int lane_if_print(const struct pcap_pkthdr *h, const u_char *p) { lane_print(p, h->len, h->caplen); return (sizeof(struct lecdatahdr_8023)); }