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      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 1.17.2.4 2007/02/08 07:07:51 guy 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 
    108 /*
    109  * PIDs for use with OUI_RFC2684.
    110  */
    111 #define PID_RFC2684_ETH_FCS	0x0001	/* Ethernet, with FCS */
    112 #define PID_RFC2684_ETH_NOFCS	0x0007	/* Ethernet, without FCS */
    113 #define PID_RFC2684_802_4_FCS	0x0002	/* 802.4, with FCS */
    114 #define PID_RFC2684_802_4_NOFCS	0x0008	/* 802.4, without FCS */
    115 #define PID_RFC2684_802_5_FCS	0x0003	/* 802.5, with FCS */
    116 #define PID_RFC2684_802_5_NOFCS	0x0009	/* 802.5, without FCS */
    117 #define PID_RFC2684_FDDI_FCS	0x0004	/* FDDI, with FCS */
    118 #define PID_RFC2684_FDDI_NOFCS	0x000a	/* FDDI, without FCS */
    119 #define PID_RFC2684_802_6_FCS	0x0005	/* 802.6, with FCS */
    120 #define PID_RFC2684_802_6_NOFCS	0x000b	/* 802.6, without FCS */
    121 #define PID_RFC2684_BPDU	0x000e	/* BPDUs */
    122