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/*
* Copyright (c) 1997 Yen Yen Lim and North Dakota State University
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Yen Yen Lim and
North Dakota State University
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
/* \summary: SunATM DLPI capture printer */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <netdissect-stdinc.h>
struct mbuf;
struct rtentry;
#include "netdissect.h"
#include "extract.h"
#include "atm.h"
/* SunATM header for ATM packet */
#define DIR_POS 0 /* Direction (0x80 = transmit, 0x00 = receive) */
#define VPI_POS 1 /* VPI */
#define VCI_POS 2 /* VCI */
#define PKT_BEGIN_POS 4 /* Start of the ATM packet */
/* Protocol type values in the bottom for bits of the byte at SUNATM_DIR_POS. */
#define PT_LANE 0x01 /* LANE */
#define PT_LLC 0x02 /* LLC encapsulation */
/*
* This is the top level routine of the printer. 'p' points
* to the SunATM pseudo-header for 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
sunatm_if_print(netdissect_options *ndo,
const struct pcap_pkthdr *h, const u_char *p)
{
u_int caplen = h->caplen;
u_int length = h->len;
u_short vci;
u_char vpi;
u_int traftype;
if (caplen < PKT_BEGIN_POS) {
ND_PRINT((ndo, "[|atm]"));
return (caplen);
}
if (ndo->ndo_eflag) {
ND_PRINT((ndo, p[DIR_POS] & 0x80 ? "Tx: " : "Rx: "));
}
switch (p[DIR_POS] & 0x0f) {
case PT_LANE:
traftype = ATM_LANE;
break;
case PT_LLC:
traftype = ATM_LLC;
break;
default:
traftype = ATM_UNKNOWN;
break;
}
vci = EXTRACT_BE_16BITS(&p[VCI_POS]);
vpi = p[VPI_POS];
p += PKT_BEGIN_POS;
caplen -= PKT_BEGIN_POS;
length -= PKT_BEGIN_POS;
atm_print(ndo, vpi, vci, traftype, p, length, caplen);
return (PKT_BEGIN_POS);
}
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