usr.sbin/snoop/snoop_isis.c

	snoop_isis.c revision 4eaa471005973e11a6110b69fe990530b3b95a38
/*
 * 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);
}