1 /*
2  * Copyright (c) 1993, 1994, 1997
3  *	The Regents of the University of California.  All rights reserved.
4  *
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
16  * written permission.
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.
20  *
21  * @(#) $Header: /tcpdump/master/tcpdump/llc.h,v 1.23 2007-04-13 09:43:11 hannes Exp $ (LBL)
22  */
23 
24 /*
25  * Definitions for information in the LLC header.
26  */
27 
28 #define	LLC_U_FMT	3
29 #define	LLC_GSAP	1
30 #define	LLC_IG	        1 /* Individual / Group */
31 #define LLC_S_FMT	1
32 
33 #define	LLC_U_POLL	0x10
34 #define	LLC_IS_POLL	0x0100
35 #define	LLC_XID_FI	0x81
36 
37 #define	LLC_U_CMD(u)	((u) & 0xef)
38 #define	LLC_UI		0x03
39 #define	LLC_UA		0x63
40 #define	LLC_DISC	0x43
41 #define	LLC_DM		0x0f
42 #define	LLC_SABME	0x6f
43 #define	LLC_TEST	0xe3
44 #define	LLC_XID		0xaf
45 #define	LLC_FRMR	0x87
46 
47 #define	LLC_S_CMD(is)	(((is) >> 2) & 0x03)
48 #define	LLC_RR		0x0001
49 #define	LLC_RNR		0x0005
50 #define	LLC_REJ		0x0009
51 
52 #define LLC_IS_NR(is)	(((is) >> 9) & 0x7f)
53 #define LLC_I_NS(is)	(((is) >> 1) & 0x7f)
54 
55 #ifndef LLCSAP_NULL
56 #define	LLCSAP_NULL		0x00
57 #endif
58 #ifndef LLCSAP_GLOBAL
59 #define	LLCSAP_GLOBAL		0xff
60 #endif
61 #ifndef LLCSAP_8021B_I
62 #define	LLCSAP_8021B_I		0x02
63 #endif
64 #ifndef LLCSAP_8021B_G
65 #define	LLCSAP_8021B_G		0x03
66 #endif
67 #ifndef LLCSAP_SNA
68 #define	LLCSAP_SNA		0x04
69 #endif
70 #ifndef LLCSAP_IP
71 #define	LLCSAP_IP		0x06
72 #endif
73 #ifndef LLCSAP_PROWAYNM
74 #define	LLCSAP_PROWAYNM		0x0e
75 #endif
76 #ifndef LLCSAP_8021D
77 #define	LLCSAP_8021D		0x42
78 #endif
79 #ifndef LLCSAP_RS511
80 #define	LLCSAP_RS511		0x4e
81 #endif
82 #ifndef LLCSAP_ISO8208
83 #define	LLCSAP_ISO8208		0x7e
84 #endif
85 #ifndef LLCSAP_PROWAY
86 #define	LLCSAP_PROWAY		0x8e
87 #endif
88 #ifndef LLCSAP_SNAP
89 #define	LLCSAP_SNAP		0xaa
90 #endif
91 #ifndef LLCSAP_IPX
92 #define LLCSAP_IPX		0xe0
93 #endif
94 #ifndef LLCSAP_NETBEUI
95 #define LLCSAP_NETBEUI		0xf0
96 #endif
97 #ifndef LLCSAP_ISONS
98 #define	LLCSAP_ISONS		0xfe
99 #endif
100 
101 /*
102  * PIDs for use with OUI_CISCO.
103  */
104 #define	PID_CISCO_CDP		0x2000	/* Cisco Discovery Protocol */
105 #define	PID_CISCO_VTP		0x2003	/* Cisco VLAN Trunk Protocol */
106 #define	PID_CISCO_DTP		0x2004	/* Cisco Dynamic Trunk Protocol */
107 #define	PID_CISCO_UDLD		0x0111	/* Unidirectional Link Detection */
108 #define	PID_CISCO_PVST		0x010b	/* Per VLAN Spanning Tree+ and RPVST+ */
109 #define	PID_CISCO_VLANBRIDGE	0x010c	/* "VLAN Bridge", according to Wireshark */
110 
111 /*
112  * PIDs for use with OUI_RFC2684.
113  */
114 #define PID_RFC2684_ETH_FCS	0x0001	/* Ethernet, with FCS */
115 #define PID_RFC2684_ETH_NOFCS	0x0007	/* Ethernet, without FCS */
116 #define PID_RFC2684_802_4_FCS	0x0002	/* 802.4, with FCS */
117 #define PID_RFC2684_802_4_NOFCS	0x0008	/* 802.4, without FCS */
118 #define PID_RFC2684_802_5_FCS	0x0003	/* 802.5, with FCS */
119 #define PID_RFC2684_802_5_NOFCS	0x0009	/* 802.5, without FCS */
120 #define PID_RFC2684_FDDI_FCS	0x0004	/* FDDI, with FCS */
121 #define PID_RFC2684_FDDI_NOFCS	0x000a	/* FDDI, without FCS */
122 #define PID_RFC2684_802_6_FCS	0x0005	/* 802.6, with FCS */
123 #define PID_RFC2684_802_6_NOFCS	0x000b	/* 802.6, without FCS */
124 #define PID_RFC2684_BPDU	0x000e	/* BPDUs */
125