2 * Redistribution and use in source and binary forms, with or without
3 * modification, are permitted provided that: (1) source code
4 * distributions retain the above copyright notice and this paragraph
5 * in its entirety, and (2) distributions including binary code include
6 * the above copyright notice and this paragraph in its entirety in
7 * the documentation or other materials provided with the distribution.
8 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND
9 * WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT
10 * LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
11 * FOR A PARTICULAR PURPOSE.
13 * Original code by Francesco Fondelli (francesco dot fondelli, gmail dot com)
16 /* \summary: Overlay Transport Virtualization (OTV) printer */
18 /* specification: draft-hasmit-otv-04 */
24 #include <netdissect-stdinc.h>
26 #include "netdissect.h"
30 * OTV header, draft-hasmit-otv-04
33 * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
34 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
35 * |R|R|R|R|I|R|R|R| Overlay ID |
36 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
37 * | Instance ID | Reserved |
38 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
42 otv_print(netdissect_options *ndo, const u_char *bp, u_int len)
46 ND_PRINT((ndo, "OTV, "));
52 ND_PRINT((ndo, "flags [%s] (0x%02x), ", flags & 0x08 ? "I" : ".", flags));
56 ND_PRINT((ndo, "overlay %u, ", EXTRACT_24BITS(bp)));
60 ND_PRINT((ndo, "instance %u\n", EXTRACT_24BITS(bp)));
67 ether_print(ndo, bp, len - 8, ndo->ndo_snapend - bp, NULL, NULL);
71 ND_PRINT((ndo, " [|OTV]"));