xref: /illumos-gate/usr/src/cmd/cmd-inet/usr.sbin/snoop/snoop_aecho.c (revision 763f1f5f97e4c16840af2ced98915f0ed0f46616)
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, Version 1.0 only
6  * (the "License").  You may not use this file except in compliance
7  * with the License.
8  *
9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10  * or http://www.opensolaris.org/os/licensing.
11  * See the License for the specific language governing permissions
12  * and limitations under the License.
13  *
14  * When distributing Covered Code, include this CDDL HEADER in each
15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16  * If applicable, add the following below this CDDL HEADER, with the
17  * fields enclosed by brackets "[]" replaced with your own identifying
18  * information: Portions Copyright [yyyy] [name of copyright owner]
19  *
20  * CDDL HEADER END
21  */
22 /*
23  * Copyright (c) 2001 by Sun Microsystems, Inc.
24  * All rights reserved.
25  */
26 
27 #include <stdio.h>
28 #include <sys/types.h>
29 
30 #include <at.h>
31 #include <snoop.h>
32 
33 void
34 interpret_aecho(int flags, struct ddp_hdr *ddp, int len)
35 {
36 	char *data;
37 
38 	data = (char *)ddp + DDPHDR_SIZE;
39 
40 	if (flags & F_SUM) {
41 		if (len < DDPHDR_SIZE + 1) {
42 			(void) snprintf(get_sum_line(), MAXLINE,
43 			    "AECHO (short packet)");
44 			return;
45 		}
46 
47 		(void) snprintf(get_sum_line(), MAXLINE,
48 		    "AECHO F=%s LEN=%d",
49 		    *data == AEP_REQ ? "Request" : "Reply",
50 		    len);
51 	}
52 
53 	if (flags & F_DTAIL) {
54 		if (len < DDPHDR_SIZE + 1) {
55 			(void) snprintf(get_line(0, 0), get_line_remain(),
56 			    "AECHO (short packet)");
57 			return;
58 		}
59 
60 		show_header("AECHO:  ", "AECHO Header", len);
61 		show_space();
62 
63 		(void) snprintf(get_line(0, 0), get_line_remain(),
64 		    "Func = %d (%s)",
65 		    data[0],
66 		    data[0] == AEP_REQ ? "Request" : "Reply");
67 		(void) snprintf(get_line(0, 0), get_line_remain(),
68 		    "Length = %d", len);
69 	}
70 }
71