xref: /freebsd/contrib/tcpdump/llc.h (revision 02e9120893770924227138ba49df1edb3896112a)
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 
22 /*
23  * Definitions for information in the LLC header.
24  */
25 
26 #define	LLC_U_FMT	3
27 #define	LLC_GSAP	1
28 #define	LLC_IG	        1 /* Individual / Group */
29 #define LLC_S_FMT	1
30 
31 #define	LLC_U_POLL	0x10
32 #define	LLC_IS_POLL	0x0100
33 #define	LLC_XID_FI	0x81
34 
35 #define	LLC_U_CMD(u)	((u) & 0xef)
36 #define	LLC_UI		0x03
37 #define	LLC_UA		0x63
38 #define	LLC_DISC	0x43
39 #define	LLC_DM		0x0f
40 #define	LLC_SABME	0x6f
41 #define	LLC_TEST	0xe3
42 #define	LLC_XID		0xaf
43 #define	LLC_FRMR	0x87
44 
45 #define	LLC_S_CMD(is)	(((is) >> 2) & 0x03)
46 #define	LLC_RR		0x0001
47 #define	LLC_RNR		0x0005
48 #define	LLC_REJ		0x0009
49 
50 #define LLC_IS_NR(is)	(((is) >> 9) & 0x7f)
51 #define LLC_I_NS(is)	(((is) >> 1) & 0x7f)
52 
53 #ifndef LLCSAP_NULL
54 #define	LLCSAP_NULL		0x00
55 #endif
56 #ifndef LLCSAP_GLOBAL
57 #define	LLCSAP_GLOBAL		0xff
58 #endif
59 #ifndef LLCSAP_8021B_I
60 #define	LLCSAP_8021B_I		0x02
61 #endif
62 #ifndef LLCSAP_8021B_G
63 #define	LLCSAP_8021B_G		0x03
64 #endif
65 #ifndef LLCSAP_SNA
66 #define	LLCSAP_SNA		0x04
67 #endif
68 #ifndef LLCSAP_IP
69 #define	LLCSAP_IP		0x06
70 #endif
71 #ifndef LLCSAP_PROWAYNM
72 #define	LLCSAP_PROWAYNM		0x0e
73 #endif
74 #ifndef LLCSAP_8021D
75 #define	LLCSAP_8021D		0x42
76 #endif
77 #ifndef LLCSAP_RS511
78 #define	LLCSAP_RS511		0x4e
79 #endif
80 #ifndef LLCSAP_ISO8208
81 #define	LLCSAP_ISO8208		0x7e
82 #endif
83 #ifndef LLCSAP_PROWAY
84 #define	LLCSAP_PROWAY		0x8e
85 #endif
86 #ifndef LLCSAP_SNAP
87 #define	LLCSAP_SNAP		0xaa
88 #endif
89 #ifndef LLCSAP_IPX
90 #define LLCSAP_IPX		0xe0
91 #endif
92 #ifndef LLCSAP_NETBEUI
93 #define LLCSAP_NETBEUI		0xf0
94 #endif
95 #ifndef LLCSAP_ISONS
96 #define	LLCSAP_ISONS		0xfe
97 #endif
98 
99 /*
100  * PIDs for use with OUI_CISCO.
101  */
102 #define	PID_CISCO_CDP		0x2000	/* Cisco Discovery Protocol */
103 #define	PID_CISCO_VTP		0x2003	/* Cisco VLAN Trunk Protocol */
104 #define	PID_CISCO_DTP		0x2004	/* Cisco Dynamic Trunk Protocol */
105 #define	PID_CISCO_UDLD		0x0111	/* Unidirectional Link Detection */
106 #define	PID_CISCO_PVST		0x010b	/* Per VLAN Spanning Tree+ and RPVST+ */
107 #define	PID_CISCO_VLANBRIDGE	0x010c	/* "VLAN Bridge", according to Wireshark */
108 
109 /*
110  * PIDs for use with OUI_RFC2684.
111  */
112 #define PID_RFC2684_ETH_FCS	0x0001	/* Ethernet, with FCS */
113 #define PID_RFC2684_ETH_NOFCS	0x0007	/* Ethernet, without FCS */
114 #define PID_RFC2684_802_4_FCS	0x0002	/* 802.4, with FCS */
115 #define PID_RFC2684_802_4_NOFCS	0x0008	/* 802.4, without FCS */
116 #define PID_RFC2684_802_5_FCS	0x0003	/* 802.5, with FCS */
117 #define PID_RFC2684_802_5_NOFCS	0x0009	/* 802.5, without FCS */
118 #define PID_RFC2684_FDDI_FCS	0x0004	/* FDDI, with FCS */
119 #define PID_RFC2684_FDDI_NOFCS	0x000a	/* FDDI, without FCS */
120 #define PID_RFC2684_802_6_FCS	0x0005	/* 802.6, with FCS */
121 #define PID_RFC2684_802_6_NOFCS	0x000b	/* 802.6, without FCS */
122 #define PID_RFC2684_BPDU	0x000e	/* BPDUs */
123