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      1 /*
      2  * CDDL HEADER START
      3  *
      4  * The contents of this file are subject to the terms of the
      5  * Common Development and Distribution License (the "License").
      6  * You may not use this file except in compliance with the License.
      7  *
      8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
      9  * or http://www.opensolaris.org/os/licensing.
     10  * See the License for the specific language governing permissions
     11  * and limitations under the License.
     12  *
     13  * When distributing Covered Code, include this CDDL HEADER in each
     14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
     15  * If applicable, add the following below this CDDL HEADER, with the
     16  * fields enclosed by brackets "[]" replaced with your own identifying
     17  * information: Portions Copyright [yyyy] [name of copyright owner]
     18  *
     19  * CDDL HEADER END
     20  */
     21 
     22 /*
     23  * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
     24  * Use is subject to license terms.
     25  */
     26 
     27 #include <stdio.h>
     28 #include <sys/types.h>
     29 #include <sys/socket.h>
     30 #include <sys/ethernet.h>
     31 #include <sys/vlan.h>
     32 #include <net/trill.h>
     33 
     34 #include <snoop.h>
     35 
     36 #define	PDUTYPE_OFFSET 4
     37 #define	PDUTYPE_HELLO1 15
     38 #define	PDUTYPE_HELLO2 16
     39 #define	PDUTYPE_HELLOP2P 17
     40 #define	PDUTYPE_LSP1 18
     41 #define	PDUTYPE_LSP2 20
     42 #define	PDUTYPE_CSN1 24
     43 #define	PDUTYPE_CSN2 25
     44 #define	PDUTYPE_PSN1 26
     45 #define	PDUTYPE_PSN2 27
     46 
     47 int
     48 interpret_isis(int flags, char *data, int dlen, boolean_t istrill)
     49 {
     50 	uint8_t pdutypenum;
     51 	char *pdutype;
     52 
     53 	pdutypenum = *(data+ PDUTYPE_OFFSET);
     54 	switch (pdutypenum) {
     55 	case PDUTYPE_HELLO1:
     56 	case PDUTYPE_HELLO2:
     57 		pdutype = "Hello";
     58 		break;
     59 	case PDUTYPE_HELLOP2P:
     60 		pdutype = "P2P Hello";
     61 		break;
     62 	case PDUTYPE_LSP1:
     63 	case PDUTYPE_LSP2:
     64 		pdutype = "Link State";
     65 		break;
     66 	case PDUTYPE_CSN1:
     67 	case PDUTYPE_CSN2:
     68 		pdutype = "CSN";
     69 		break;
     70 	case PDUTYPE_PSN1:
     71 	case PDUTYPE_PSN2:
     72 		pdutype = "PSN";
     73 		break;
     74 	default:
     75 		pdutype = "Unknown";
     76 		break;
     77 	}
     78 
     79 	if (flags & F_SUM) {
     80 		(void) snprintf(get_sum_line(), MAXLINE,
     81 		    "%s %s L:%d", istrill ? "Core TRILL IS-IS" : "IS-IS",
     82 		    pdutype, dlen);
     83 	}
     84 
     85 	if (flags & F_DTAIL) {
     86 		if (istrill) {
     87 			show_header("TRILL-IS-IS: ",
     88 			    "Core TRILL IS-IS Frame", dlen);
     89 		} else {
     90 			show_header("IS-IS: ",
     91 			    "IS-IS Frame", dlen);
     92 		}
     93 		show_space();
     94 		(void) snprintf(get_line(0, 0), get_line_remain(),
     95 		    "Frame type = %02X (%s)", pdutypenum, pdutype);
     96 		show_trailer();
     97 	}
     98 	return (0);
     99 }
    100