168 lines
4.3 KiB
C
168 lines
4.3 KiB
C
/*
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* Marko Kiiskila carnil@cs.tut.fi
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*
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* Tampere University of Technology - Telecommunications Laboratory
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*
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* Permission to use, copy, modify and distribute this
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* software and its documentation is hereby granted,
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* provided that both the copyright notice and this
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* permission notice appear in all copies of the software,
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* derivative works or modified versions, and any portions
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* thereof, that both notices appear in supporting
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* documentation, and that the use of this software is
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* acknowledged in any publications resulting from using
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* the software.
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*
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* TUT ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
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* CONDITION AND DISCLAIMS ANY LIABILITY OF ANY KIND FOR
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* ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS
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* SOFTWARE.
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*
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*/
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#ifndef lint
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static const char rcsid[] _U_ =
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"@(#) $Header: /tcpdump/master/tcpdump/print-lane.c,v 1.25 2005-11-13 12:12:42 guy Exp $ (LBL)";
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#endif
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <tcpdump-stdinc.h>
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#include <stdio.h>
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#include <pcap.h>
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#include "interface.h"
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#include "addrtoname.h"
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#include "extract.h"
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#include "ether.h"
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#include "lane.h"
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static const struct tok lecop2str[] = {
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{ 0x0001, "configure request" },
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{ 0x0101, "configure response" },
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{ 0x0002, "join request" },
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{ 0x0102, "join response" },
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{ 0x0003, "ready query" },
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{ 0x0103, "ready indication" },
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{ 0x0004, "register request" },
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{ 0x0104, "register response" },
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{ 0x0005, "unregister request" },
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{ 0x0105, "unregister response" },
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{ 0x0006, "ARP request" },
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{ 0x0106, "ARP response" },
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{ 0x0007, "flush request" },
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{ 0x0107, "flush response" },
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{ 0x0008, "NARP request" },
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{ 0x0009, "topology request" },
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{ 0, NULL }
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};
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static inline void
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lane_hdr_print(register const u_char *bp, int length)
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{
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register const struct lecdatahdr_8023 *ep;
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ep = (const struct lecdatahdr_8023 *)bp;
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if (qflag)
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(void)printf("lecid:%x %s %s %d: ",
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EXTRACT_16BITS(&ep->le_header),
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etheraddr_string(ep->h_source),
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etheraddr_string(ep->h_dest),
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length);
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else
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(void)printf("lecid:%x %s %s %s %d: ",
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EXTRACT_16BITS(&ep->le_header),
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etheraddr_string(ep->h_source),
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etheraddr_string(ep->h_dest),
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etherproto_string(ep->h_type),
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length);
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}
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/*
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* This is the top level routine of the printer. 'p' points
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* to the LANE header of the packet, 'h->ts' is the timestamp,
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* 'h->len' is the length of the packet off the wire, and 'h->caplen'
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* is the number of bytes actually captured.
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*
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* This assumes 802.3, not 802.5, LAN emulation.
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*/
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void
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lane_print(const u_char *p, u_int length, u_int caplen)
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{
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struct lane_controlhdr *lec;
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struct lecdatahdr_8023 *ep;
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u_short ether_type;
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u_short extracted_ethertype;
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if (caplen < sizeof(struct lane_controlhdr)) {
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printf("[|lane]");
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return;
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}
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lec = (struct lane_controlhdr *)p;
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if (EXTRACT_16BITS(&lec->lec_header) == 0xff00) {
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/*
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* LE Control.
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*/
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printf("lec: proto %x vers %x %s",
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lec->lec_proto, lec->lec_vers,
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tok2str(lecop2str, "opcode-#%u", EXTRACT_16BITS(&lec->lec_opcode)));
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return;
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}
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if (caplen < sizeof(struct lecdatahdr_8023)) {
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printf("[|lane]");
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return;
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}
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if (eflag)
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lane_hdr_print(p, length);
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/*
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* Go past the LANE header.
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*/
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length -= sizeof(struct lecdatahdr_8023);
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caplen -= sizeof(struct lecdatahdr_8023);
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ep = (struct lecdatahdr_8023 *)p;
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p += sizeof(struct lecdatahdr_8023);
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ether_type = EXTRACT_16BITS(&ep->h_type);
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/*
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* Is it (gag) an 802.3 encapsulation?
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*/
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if (ether_type <= ETHERMTU) {
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/* Try to print the LLC-layer header & higher layers */
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if (llc_print(p, length, caplen, ep->h_source, ep->h_dest,
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&extracted_ethertype) == 0) {
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/* ether_type not known, print raw packet */
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if (!eflag)
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lane_hdr_print((u_char *)ep, length + sizeof(*ep));
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if (extracted_ethertype) {
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printf("(LLC %s) ",
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etherproto_string(htons(extracted_ethertype)));
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}
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if (!suppress_default_print)
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default_print(p, caplen);
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}
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} else if (ether_encap_print(ether_type, p, length, caplen,
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&extracted_ethertype) == 0) {
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/* ether_type not known, print raw packet */
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if (!eflag)
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lane_hdr_print((u_char *)ep, length + sizeof(*ep));
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if (!suppress_default_print)
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default_print(p, caplen);
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}
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}
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u_int
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lane_if_print(const struct pcap_pkthdr *h, const u_char *p)
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{
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lane_print(p, h->len, h->caplen);
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return (sizeof(struct lecdatahdr_8023));
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}
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