mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-21 11:13:30 +00:00
124 lines
3.0 KiB
C
124 lines
3.0 KiB
C
/*
|
|
* 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.
|
|
*
|
|
*/
|
|
|
|
#define NETDISSECT_REWORKED
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#include <tcpdump-stdinc.h>
|
|
|
|
#include "interface.h"
|
|
#include "extract.h"
|
|
#include "ether.h"
|
|
|
|
struct lecdatahdr_8023 {
|
|
uint16_t le_header;
|
|
uint8_t h_dest[ETHER_ADDR_LEN];
|
|
uint8_t h_source[ETHER_ADDR_LEN];
|
|
uint16_t h_type;
|
|
};
|
|
|
|
struct lane_controlhdr {
|
|
uint16_t lec_header;
|
|
uint8_t lec_proto;
|
|
uint8_t lec_vers;
|
|
uint16_t lec_opcode;
|
|
};
|
|
|
|
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 void
|
|
lane_hdr_print(netdissect_options *ndo, const u_char *bp)
|
|
{
|
|
ND_PRINT((ndo, "lecid:%x ", EXTRACT_16BITS(bp)));
|
|
}
|
|
|
|
/*
|
|
* 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(netdissect_options *ndo, const u_char *p, u_int length, u_int caplen)
|
|
{
|
|
struct lane_controlhdr *lec;
|
|
|
|
if (caplen < sizeof(struct lane_controlhdr)) {
|
|
ND_PRINT((ndo, "[|lane]"));
|
|
return;
|
|
}
|
|
|
|
lec = (struct lane_controlhdr *)p;
|
|
if (EXTRACT_16BITS(&lec->lec_header) == 0xff00) {
|
|
/*
|
|
* LE Control.
|
|
*/
|
|
ND_PRINT((ndo, "lec: proto %x vers %x %s",
|
|
lec->lec_proto, lec->lec_vers,
|
|
tok2str(lecop2str, "opcode-#%u", EXTRACT_16BITS(&lec->lec_opcode))));
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Go past the LE header.
|
|
*/
|
|
length -= 2;
|
|
caplen -= 2;
|
|
p += 2;
|
|
|
|
/*
|
|
* Now print the encapsulated frame, under the assumption
|
|
* that it's an Ethernet frame.
|
|
*/
|
|
ether_print(ndo, p, length, caplen, lane_hdr_print, p - 2);
|
|
}
|
|
|
|
u_int
|
|
lane_if_print(netdissect_options *ndo, const struct pcap_pkthdr *h, const u_char *p)
|
|
{
|
|
lane_print(ndo, p, h->len, h->caplen);
|
|
|
|
return (sizeof(struct lecdatahdr_8023));
|
|
}
|