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| Commit | Line | Data |
|---|---|---|
| 394326e6 | 1 | /* |
| c8dfc989 KB |
2 | * Copyright (c) 1988, 1993 |
| 3 | * The Regents of the University of California. All rights reserved. | |
| 394326e6 | 4 | * |
| dbf0c423 | 5 | * %sccs.include.redist.c% |
| 394326e6 | 6 | * |
| c8dfc989 | 7 | * @(#)if_llc.h 8.1 (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; | |
| 06df2928 KS |
36 | struct { |
| 37 | u_char control; | |
| 38 | struct frmrinfo { | |
| 39 | u_char rej_pdu_0; | |
| 40 | u_char rej_pdu_1; | |
| 41 | u_char frmr_control; | |
| 42 | u_char frmr_control_ext; | |
| 43 | u_char frmr_cause; | |
| 44 | } frmrinfo; | |
| 45 | } type_frmr; | |
| 394326e6 MK |
46 | struct { |
| 47 | u_char control; | |
| 48 | u_char org_code[3]; | |
| 49 | u_short ether_type; | |
| 50 | } type_snap; | |
| 06df2928 KS |
51 | struct { |
| 52 | u_char control; | |
| 53 | u_char control_ext; | |
| 54 | } type_raw; | |
| 394326e6 MK |
55 | } llc_un; |
| 56 | }; | |
| 06df2928 KS |
57 | #define llc_control llc_un.type_u.control |
| 58 | #define llc_control_ext llc_un.type_raw.control_ext | |
| 59 | #define llc_fid llc_un.type_u.format_id | |
| 60 | #define llc_class llc_un.type_u.class | |
| 61 | #define llc_window llc_un.type_u.window_x2 | |
| 62 | #define llc_frmrinfo llc_un.type_frmr.frmrinfo | |
| 63 | #define llc_frmr_pdu0 llc_un.type_frmr.frmrinfo.rej_pdu0 | |
| 64 | #define llc_frmr_pdu1 llc_un.type_frmr.frmrinfo.rej_pdu1 | |
| 65 | #define llc_frmr_control llc_un.type_frmr.frmrinfo.frmr_control | |
| 66 | #define llc_frmr_control_ext llc_un.type_frmr.frmrinfo.frmr_control_ext | |
| 67 | #define llc_frmr_cause llc_un.type_frmr.frmrinfo.frmr_control_ext | |
| 394326e6 | 68 | |
| 06df2928 KS |
69 | /* |
| 70 | * Don't use sizeof(struct llc_un) for LLC header sizes | |
| 71 | */ | |
| 72 | #define LLC_ISFRAMELEN 4 | |
| 73 | #define LLC_UFRAMELEN 3 | |
| 74 | #define LLC_FRMRLEN 7 | |
| 75 | ||
| 76 | /* | |
| 77 | * Unnumbered LLC format commands | |
| 78 | */ | |
| 394326e6 MK |
79 | #define LLC_UI 0x3 |
| 80 | #define LLC_UI_P 0x13 | |
| 06df2928 KS |
81 | #define LLC_DISC 0x43 |
| 82 | #define LLC_DISC_P 0x53 | |
| 83 | #define LLC_UA 0x63 | |
| 84 | #define LLC_UA_P 0x73 | |
| 394326e6 MK |
85 | #define LLC_TEST 0xe3 |
| 86 | #define LLC_TEST_P 0xf3 | |
| 06df2928 KS |
87 | #define LLC_FRMR 0x87 |
| 88 | #define LLC_FRMR_P 0x97 | |
| 89 | #define LLC_DM 0x0f | |
| 90 | #define LLC_DM_P 0x1f | |
| 91 | #define LLC_XID 0xaf | |
| 92 | #define LLC_XID_P 0xbf | |
| 93 | #define LLC_SABME 0x6f | |
| 94 | #define LLC_SABME_P 0x7f | |
| 394326e6 | 95 | |
| 06df2928 KS |
96 | /* |
| 97 | * Supervisory LLC commands | |
| 98 | */ | |
| 99 | #define LLC_RR 0x01 | |
| 100 | #define LLC_RNR 0x05 | |
| 101 | #define LLC_REJ 0x09 | |
| 102 | ||
| 103 | /* | |
| 104 | * Info format - dummy only | |
| 105 | */ | |
| 106 | #define LLC_INFO 0x00 | |
| 107 | ||
| 108 | /* | |
| 109 | * ISO PDTR 10178 contains among others | |
| 110 | */ | |
| 111 | #define LLC_X25_LSAP 0x7e | |
| 394326e6 | 112 | #define LLC_SNAP_LSAP 0xaa |
| 06df2928 KS |
113 | #define LLC_ISO_LSAP 0xfe |
| 114 | ||
| 115 | ||
| 116 | ||
| 117 | ||
| 118 | ||
| 119 |