1*05b00f60SXin Li /*
2*05b00f60SXin Li * Copyright (c) 1990, 1991, 1993, 1994, 1995, 1996, 1997
3*05b00f60SXin Li * The Regents of the University of California. All rights reserved.
4*05b00f60SXin Li *
5*05b00f60SXin Li * Redistribution and use in source and binary forms, with or without
6*05b00f60SXin Li * modification, are permitted provided that: (1) source code distributions
7*05b00f60SXin Li * retain the above copyright notice and this paragraph in its entirety, (2)
8*05b00f60SXin Li * distributions including binary code include the above copyright notice and
9*05b00f60SXin Li * this paragraph in its entirety in the documentation or other materials
10*05b00f60SXin Li * provided with the distribution, and (3) all advertising materials mentioning
11*05b00f60SXin Li * features or use of this software display the following acknowledgement:
12*05b00f60SXin Li * ``This product includes software developed by the University of California,
13*05b00f60SXin Li * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
14*05b00f60SXin Li * the University nor the names of its contributors may be used to endorse
15*05b00f60SXin Li * or promote products derived from this software without specific prior
16*05b00f60SXin Li * written permission.
17*05b00f60SXin Li * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
18*05b00f60SXin Li * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
19*05b00f60SXin Li * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
20*05b00f60SXin Li */
21*05b00f60SXin Li
22*05b00f60SXin Li /* \summary: Broadcom LI Printer */
23*05b00f60SXin Li
24*05b00f60SXin Li #ifdef HAVE_CONFIG_H
25*05b00f60SXin Li #include <config.h>
26*05b00f60SXin Li #endif
27*05b00f60SXin Li
28*05b00f60SXin Li #include "netdissect-stdinc.h"
29*05b00f60SXin Li
30*05b00f60SXin Li #define ND_LONGJMP_FROM_TCHECK
31*05b00f60SXin Li #include "netdissect.h"
32*05b00f60SXin Li #include "addrtoname.h"
33*05b00f60SXin Li #include "extract.h"
34*05b00f60SXin Li
35*05b00f60SXin Li #define BCM_LI_SHIM_LEN 4
36*05b00f60SXin Li
37*05b00f60SXin Li static const struct tok bcm_li_direction_values[] = {
38*05b00f60SXin Li { 1, "unused" },
39*05b00f60SXin Li { 2, "egress" },
40*05b00f60SXin Li { 3, "ingress" },
41*05b00f60SXin Li { 0, NULL}
42*05b00f60SXin Li };
43*05b00f60SXin Li
44*05b00f60SXin Li #define BCM_LI_PKT_TYPE_UNDECIDED 4
45*05b00f60SXin Li #define BCM_LI_PKT_TYPE_IPV4 5
46*05b00f60SXin Li #define BCM_LI_PKT_TYPE_IPV6 6
47*05b00f60SXin Li #define BCM_LI_PKT_TYPE_ETHERNET 7
48*05b00f60SXin Li
49*05b00f60SXin Li static const struct tok bcm_li_pkt_type_values[] = {
50*05b00f60SXin Li { BCM_LI_PKT_TYPE_UNDECIDED, "undecided" },
51*05b00f60SXin Li { BCM_LI_PKT_TYPE_IPV4, "ipv4" },
52*05b00f60SXin Li { BCM_LI_PKT_TYPE_IPV6, "ipv6" },
53*05b00f60SXin Li { BCM_LI_PKT_TYPE_ETHERNET, "ethernet" },
54*05b00f60SXin Li { 0, NULL}
55*05b00f60SXin Li };
56*05b00f60SXin Li
57*05b00f60SXin Li static const struct tok bcm_li_pkt_subtype_values[] = {
58*05b00f60SXin Li { 1, "single VLAN tag" },
59*05b00f60SXin Li { 2, "double VLAN tag" },
60*05b00f60SXin Li { 3, "untagged" },
61*05b00f60SXin Li { 0, NULL}
62*05b00f60SXin Li };
63*05b00f60SXin Li
64*05b00f60SXin Li void
bcm_li_print(netdissect_options * ndo,const u_char * bp,u_int length)65*05b00f60SXin Li bcm_li_print(netdissect_options *ndo,
66*05b00f60SXin Li const u_char *bp, u_int length)
67*05b00f60SXin Li {
68*05b00f60SXin Li u_int shim, direction, pkt_type, pkt_subtype, li_id;
69*05b00f60SXin Li
70*05b00f60SXin Li ndo->ndo_protocol = "bcm_li";
71*05b00f60SXin Li if (length < BCM_LI_SHIM_LEN) {
72*05b00f60SXin Li ND_PRINT(" (length %u < %u)", length, BCM_LI_SHIM_LEN);
73*05b00f60SXin Li goto invalid;
74*05b00f60SXin Li }
75*05b00f60SXin Li shim = GET_BE_U_4(bp);
76*05b00f60SXin Li
77*05b00f60SXin Li direction = (shim >> 29) & 0x7;
78*05b00f60SXin Li pkt_type = (shim >> 25) & 0xf;
79*05b00f60SXin Li pkt_subtype = (shim >> 22) & 0x7;
80*05b00f60SXin Li li_id = shim & 0x3fffff;
81*05b00f60SXin Li
82*05b00f60SXin Li length -= BCM_LI_SHIM_LEN;
83*05b00f60SXin Li bp += BCM_LI_SHIM_LEN;
84*05b00f60SXin Li
85*05b00f60SXin Li ND_PRINT("%sBCM-LI-SHIM: direction %s, pkt-type %s, pkt-subtype %s, li-id %u%s",
86*05b00f60SXin Li ndo->ndo_vflag ? "\n " : "",
87*05b00f60SXin Li tok2str(bcm_li_direction_values, "unknown", direction),
88*05b00f60SXin Li tok2str(bcm_li_pkt_type_values, "unknown", pkt_type),
89*05b00f60SXin Li tok2str(bcm_li_pkt_subtype_values, "unknown", pkt_subtype),
90*05b00f60SXin Li li_id,
91*05b00f60SXin Li ndo->ndo_vflag ? "\n ": "");
92*05b00f60SXin Li
93*05b00f60SXin Li if (!ndo->ndo_vflag) {
94*05b00f60SXin Li ND_TCHECK_LEN(bp, length);
95*05b00f60SXin Li return;
96*05b00f60SXin Li }
97*05b00f60SXin Li
98*05b00f60SXin Li switch (pkt_type) {
99*05b00f60SXin Li case BCM_LI_PKT_TYPE_ETHERNET:
100*05b00f60SXin Li ether_print(ndo, bp, length, ND_BYTES_AVAILABLE_AFTER(bp), NULL, NULL);
101*05b00f60SXin Li break;
102*05b00f60SXin Li case BCM_LI_PKT_TYPE_IPV4:
103*05b00f60SXin Li ip_print(ndo, bp, length);
104*05b00f60SXin Li break;
105*05b00f60SXin Li case BCM_LI_PKT_TYPE_IPV6:
106*05b00f60SXin Li ip6_print(ndo, bp, length);
107*05b00f60SXin Li break;
108*05b00f60SXin Li case BCM_LI_PKT_TYPE_UNDECIDED:
109*05b00f60SXin Li
110*05b00f60SXin Li /*
111*05b00f60SXin Li * Guess IP version from first nibble.
112*05b00f60SXin Li */
113*05b00f60SXin Li if ((GET_U_1(bp) >> 4) == 4) {
114*05b00f60SXin Li ip_print(ndo, bp, length);
115*05b00f60SXin Li } else if ((GET_U_1(bp) >> 4) == 6) {
116*05b00f60SXin Li ip6_print(ndo, bp, length);
117*05b00f60SXin Li } else {
118*05b00f60SXin Li ND_PRINT("unknown payload");
119*05b00f60SXin Li }
120*05b00f60SXin Li break;
121*05b00f60SXin Li
122*05b00f60SXin Li default:
123*05b00f60SXin Li goto invalid;
124*05b00f60SXin Li }
125*05b00f60SXin Li
126*05b00f60SXin Li return;
127*05b00f60SXin Li invalid:
128*05b00f60SXin Li nd_print_invalid(ndo);
129*05b00f60SXin Li }
130*05b00f60SXin Li
131