/*
* 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.
*/

#include <sys/cdefs.h>
#ifndef lint
__RCSID("$NetBSD: print-sunatm.c,v 1.8 2024/09/02 16:15:33 christos Exp $");
#endif

/* \summary: SunATM DLPI capture printer */

#include <config.h>

#include "netdissect-stdinc.h"

#define ND_LONGJMP_FROM_TCHECK
#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.
*/
void
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;

       ndo->ndo_protocol = "sunatm";

       if (ndo->ndo_eflag) {
               ND_PRINT(GET_U_1(p + DIR_POS) & 0x80 ? "Tx: " : "Rx: ");
       }

       switch (GET_U_1(p + DIR_POS) & 0x0f) {

       case PT_LANE:
               traftype = ATM_LANE;
               break;

       case PT_LLC:
               traftype = ATM_LLC;
               break;

       default:
               traftype = ATM_UNKNOWN;
               break;
       }

       vpi = GET_U_1(p + VPI_POS);
       vci = GET_BE_U_2(p + VCI_POS);

       p += PKT_BEGIN_POS;
       caplen -= PKT_BEGIN_POS;
       length -= PKT_BEGIN_POS;
       ndo->ndo_ll_hdr_len += PKT_BEGIN_POS;
       atm_print(ndo, vpi, vci, traftype, p, length, caplen);
}