/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */

/*
 * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

#include <stdio.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/ethernet.h>
#include <sys/vlan.h>
#include <net/trill.h>

#include <snoop.h>

#define PDUTYPE_OFFSET 4
#define PDUTYPE_HELLO1 15
#define PDUTYPE_HELLO2 16
#define PDUTYPE_HELLOP2P 17
#define PDUTYPE_LSP1 18
#define PDUTYPE_LSP2 20
#define PDUTYPE_CSN1 24
#define PDUTYPE_CSN2 25
#define PDUTYPE_PSN1 26
#define PDUTYPE_PSN2 27

int
interpret_isis(int flags, char *data, int dlen, boolean_t istrill)
{
        uint8_t pdutypenum;
        char *pdutype;

        pdutypenum = *(data+ PDUTYPE_OFFSET);
        switch (pdutypenum) {
        case PDUTYPE_HELLO1:
        case PDUTYPE_HELLO2:
                pdutype = "Hello";
                break;
        case PDUTYPE_HELLOP2P:
                pdutype = "P2P Hello";
                break;
        case PDUTYPE_LSP1:
        case PDUTYPE_LSP2:
                pdutype = "Link State";
                break;
        case PDUTYPE_CSN1:
        case PDUTYPE_CSN2:
                pdutype = "CSN";
                break;
        case PDUTYPE_PSN1:
        case PDUTYPE_PSN2:
                pdutype = "PSN";
                break;
        default:
                pdutype = "Unknown";
                break;
        }

        if (flags & F_SUM) {
                (void) snprintf(get_sum_line(), MAXLINE,
                    "%s %s L:%d", istrill ? "Core TRILL IS-IS" : "IS-IS",
                    pdutype, dlen);
        }

        if (flags & F_DTAIL) {
                if (istrill) {
                        show_header("TRILL-IS-IS: ",
                            "Core TRILL IS-IS Frame", dlen);
                } else {
                        show_header("IS-IS: ",
                            "IS-IS Frame", dlen);
                }
                show_space();
                (void) snprintf(get_line(0, 0), get_line_remain(),
                    "Frame type = %02X (%s)", pdutypenum, pdutype);
                show_trailer();
        }
        return (0);
}