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/*
* 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 1.23.2.2 2005/11/13 12:12:59 guy Exp $ (LBL)";
#endif
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <tcpdump-stdinc.h>
#include <stdio.h>
#include <pcap.h>
#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?
*/
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));
}
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