projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 394326e6 MK |
1 | /* |
| 2 | * Copyright (c) 1988 Regents of the University of California. | |
| 3 | * All rights reserved. | |
| 4 | * | |
| dbf0c423 | 5 | * %sccs.include.redist.c% |
| 394326e6 | 6 | * |
| dbf0c423 | 7 | * @(#)if_llc.h 7.2 (Berkeley) %G% |
| 394326e6 MK |
8 | */ |
| 9 | ||
| 10 | /* | |
| 11 | * IEEE 802.2 Link Level Control headers, for use in conjunction with | |
| 12 | * 802.{3,4,5} media access control methods. | |
| 13 | * | |
| 14 | * Headers here do not use bit fields due to shortcommings in many | |
| 15 | * compilers. | |
| 16 | */ | |
| 17 | ||
| 18 | struct llc { | |
| 19 | u_char llc_dsap; | |
| 20 | u_char llc_ssap; | |
| 21 | union { | |
| 22 | struct { | |
| 23 | u_char control; | |
| 24 | u_char format_id; | |
| 25 | u_char class; | |
| 26 | u_char window_x2; | |
| 27 | } type_u; | |
| 28 | struct { | |
| 29 | u_char num_snd_x2; | |
| 30 | u_char num_rcv_x2; | |
| 31 | } type_i; | |
| 32 | struct { | |
| 33 | u_char control; | |
| 34 | u_char num_rcv_x2; | |
| 35 | } type_s; | |
| 36 | struct { | |
| 37 | u_char control; | |
| 38 | u_char org_code[3]; | |
| 39 | u_short ether_type; | |
| 40 | } type_snap; | |
| 41 | } llc_un; | |
| 42 | }; | |
| 43 | #define llc_control llc_un.type_u.control | |
| 44 | #define llc_fid llc_un.type_u.format_id | |
| 45 | #define llc_class llc_un.type_u.class | |
| 46 | #define llc_window llc_un.type_u.window_x2 | |
| 47 | ||
| 48 | #define LLC_UI 0x3 | |
| 49 | #define LLC_UI_P 0x13 | |
| 50 | #define LLC_XID 0xaf | |
| 51 | #define LLC_XID_P 0xbf | |
| 52 | #define LLC_TEST 0xe3 | |
| 53 | #define LLC_TEST_P 0xf3 | |
| 54 | ||
| 55 | #define LLC_ISO_LSAP 0xfe | |
| 56 | #define LLC_SNAP_LSAP 0xaa |