2 * Copyright (c) 1990, 1991, 1993, 1994, 1995, 1996, 1997
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that: (1) source code distributions
7 * retain the above copyright notice and this paragraph in its entirety, (2)
8 * distributions including binary code include the above copyright notice and
9 * this paragraph in its entirety in the documentation or other materials
10 * provided with the distribution, and (3) all advertising materials mentioning
11 * features or use of this software display the following acknowledgement:
12 * ``This product includes software developed by the University of California,
13 * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
14 * the University nor the names of its contributors may be used to endorse
15 * or promote products derived from this software without specific prior
17 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
19 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
22 /* \summary: Broadcom LI Printer */
28 #include "netdissect-stdinc.h"
30 #define ND_LONGJMP_FROM_TCHECK
31 #include "netdissect.h"
32 #include "addrtoname.h"
35 #define BCM_LI_SHIM_LEN 4
37 static const struct tok bcm_li_direction_values[] = {
44 #define BCM_LI_PKT_TYPE_UNDECIDED 4
45 #define BCM_LI_PKT_TYPE_IPV4 5
46 #define BCM_LI_PKT_TYPE_IPV6 6
47 #define BCM_LI_PKT_TYPE_ETHERNET 7
49 static const struct tok bcm_li_pkt_type_values[] = {
50 { BCM_LI_PKT_TYPE_UNDECIDED, "undecided" },
51 { BCM_LI_PKT_TYPE_IPV4, "ipv4" },
52 { BCM_LI_PKT_TYPE_IPV6, "ipv6" },
53 { BCM_LI_PKT_TYPE_ETHERNET, "ethernet" },
57 static const struct tok bcm_li_pkt_subtype_values[] = {
58 { 1, "single VLAN tag" },
59 { 2, "double VLAN tag" },
65 bcm_li_print(netdissect_options *ndo,
66 const u_char *bp, u_int length)
68 u_int shim, direction, pkt_type, pkt_subtype, li_id;
70 ndo->ndo_protocol = "bcm_li";
71 if (length < BCM_LI_SHIM_LEN) {
72 ND_PRINT(" (length %u < %u)", length, BCM_LI_SHIM_LEN);
75 shim = GET_BE_U_4(bp);
77 direction = (shim >> 29) & 0x7;
78 pkt_type = (shim >> 25) & 0xf;
79 pkt_subtype = (shim >> 22) & 0x7;
80 li_id = shim & 0x3fffff;
82 length -= BCM_LI_SHIM_LEN;
83 bp += BCM_LI_SHIM_LEN;
85 ND_PRINT("%sBCM-LI-SHIM: direction %s, pkt-type %s, pkt-subtype %s, li-id %u%s",
86 ndo->ndo_vflag ? "\n " : "",
87 tok2str(bcm_li_direction_values, "unknown", direction),
88 tok2str(bcm_li_pkt_type_values, "unknown", pkt_type),
89 tok2str(bcm_li_pkt_subtype_values, "unknown", pkt_subtype),
91 ndo->ndo_vflag ? "\n ": "");
93 if (!ndo->ndo_vflag) {
94 ND_TCHECK_LEN(bp, length);
99 case BCM_LI_PKT_TYPE_ETHERNET:
100 ether_print(ndo, bp, length, ND_BYTES_AVAILABLE_AFTER(bp), NULL, NULL);
102 case BCM_LI_PKT_TYPE_IPV4:
103 ip_print(ndo, bp, length);
105 case BCM_LI_PKT_TYPE_IPV6:
106 ip6_print(ndo, bp, length);
108 case BCM_LI_PKT_TYPE_UNDECIDED:
111 * Guess IP version from first nibble.
113 if ((GET_U_1(bp) >> 4) == 4) {
114 ip_print(ndo, bp, length);
115 } else if ((GET_U_1(bp) >> 4) == 6) {
116 ip6_print(ndo, bp, length);
118 ND_PRINT("unknown payload");
128 nd_print_invalid(ndo);