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e2be04c7 | 1 | /* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */ |
607ca46e DH |
2 | /* |
3 | * INET An implementation of the TCP/IP protocol suite for the LINUX | |
4 | * operating system. INET is implemented using the BSD Socket | |
5 | * interface as the means of communication with the user level. | |
6 | * | |
7 | * Global definitions for the ANSI FDDI interface. | |
8 | * | |
61414f5e | 9 | * Version: @(#)if_fddi.h 1.0.3 Oct 6 2018 |
607ca46e | 10 | * |
61414f5e | 11 | * Author: Lawrence V. Stefani, <stefani@yahoo.com> |
e56763ee | 12 | * Maintainer: Maciej W. Rozycki, <macro@orcam.me.uk> |
607ca46e DH |
13 | * |
14 | * if_fddi.h is based on previous if_ether.h and if_tr.h work by | |
15 | * Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG> | |
16 | * Donald Becker, <becker@super.org> | |
17 | * Alan Cox, <alan@lxorguk.ukuu.org.uk> | |
18 | * Steve Whitehouse, <gw7rrm@eeshack3.swan.ac.uk> | |
19 | * Peter De Schrijver, <stud11@cc4.kuleuven.ac.be> | |
20 | * | |
21 | * This program is free software; you can redistribute it and/or | |
22 | * modify it under the terms of the GNU General Public License | |
23 | * as published by the Free Software Foundation; either version | |
24 | * 2 of the License, or (at your option) any later version. | |
25 | */ | |
26 | #ifndef _UAPI_LINUX_IF_FDDI_H | |
27 | #define _UAPI_LINUX_IF_FDDI_H | |
28 | ||
29 | #include <linux/types.h> | |
30 | ||
31 | /* | |
32 | * Define max and min legal sizes. The frame sizes do not include | |
33 | * 4 byte FCS/CRC (frame check sequence). | |
34 | */ | |
eb11022d MR |
35 | #define FDDI_K_ALEN 6 /* Octets in one FDDI address */ |
36 | #define FDDI_K_8022_HLEN 16 /* Total octets in 802.2 header */ | |
37 | #define FDDI_K_SNAP_HLEN 21 /* Total octets in 802.2 SNAP header */ | |
38 | #define FDDI_K_8022_ZLEN 16 /* Min octets in 802.2 frame sans | |
39 | FCS */ | |
40 | #define FDDI_K_SNAP_ZLEN 21 /* Min octets in 802.2 SNAP frame sans | |
41 | FCS */ | |
607ca46e DH |
42 | #define FDDI_K_8022_DLEN 4475 /* Max octets in 802.2 payload */ |
43 | #define FDDI_K_SNAP_DLEN 4470 /* Max octets in 802.2 SNAP payload */ | |
eb11022d | 44 | #define FDDI_K_LLC_ZLEN 13 /* Min octets in LLC frame sans FCS */ |
607ca46e | 45 | #define FDDI_K_LLC_LEN 4491 /* Max octets in LLC frame sans FCS */ |
eb11022d MR |
46 | #define FDDI_K_OUI_LEN 3 /* Octets in OUI in 802.2 SNAP |
47 | header */ | |
607ca46e | 48 | |
61414f5e MR |
49 | /* Define FDDI Frame Control (FC) Byte masks */ |
50 | #define FDDI_FC_K_CLASS_MASK 0x80 /* class bit */ | |
51 | #define FDDI_FC_K_CLASS_SYNC 0x80 | |
52 | #define FDDI_FC_K_CLASS_ASYNC 0x00 | |
53 | #define FDDI_FC_K_ALEN_MASK 0x40 /* address length bit */ | |
54 | #define FDDI_FC_K_ALEN_48 0x40 | |
55 | #define FDDI_FC_K_ALEN_16 0x00 | |
56 | #define FDDI_FC_K_FORMAT_MASK 0x30 /* format bits */ | |
57 | #define FDDI_FC_K_FORMAT_FUTURE 0x30 | |
58 | #define FDDI_FC_K_FORMAT_IMPLEMENTOR 0x20 | |
59 | #define FDDI_FC_K_FORMAT_LLC 0x10 | |
60 | #define FDDI_FC_K_FORMAT_MANAGEMENT 0x00 | |
61 | #define FDDI_FC_K_CONTROL_MASK 0x0f /* control bits */ | |
62 | ||
63 | /* Define FDDI Frame Control (FC) Byte specific values */ | |
eb11022d MR |
64 | #define FDDI_FC_K_VOID 0x00 |
65 | #define FDDI_FC_K_NON_RESTRICTED_TOKEN 0x80 | |
66 | #define FDDI_FC_K_RESTRICTED_TOKEN 0xC0 | |
67 | #define FDDI_FC_K_SMT_MIN 0x41 | |
68 | #define FDDI_FC_K_SMT_MAX 0x4F | |
69 | #define FDDI_FC_K_MAC_MIN 0xC1 | |
70 | #define FDDI_FC_K_MAC_MAX 0xCF | |
71 | #define FDDI_FC_K_ASYNC_LLC_MIN 0x50 | |
72 | #define FDDI_FC_K_ASYNC_LLC_DEF 0x54 | |
73 | #define FDDI_FC_K_ASYNC_LLC_MAX 0x5F | |
74 | #define FDDI_FC_K_SYNC_LLC_MIN 0xD0 | |
75 | #define FDDI_FC_K_SYNC_LLC_MAX 0xD7 | |
76 | #define FDDI_FC_K_IMPLEMENTOR_MIN 0x60 | |
77 | #define FDDI_FC_K_IMPLEMENTOR_MAX 0x6F | |
78 | #define FDDI_FC_K_RESERVED_MIN 0x70 | |
79 | #define FDDI_FC_K_RESERVED_MAX 0x7F | |
607ca46e DH |
80 | |
81 | /* Define LLC and SNAP constants */ | |
eb11022d | 82 | #define FDDI_EXTENDED_SAP 0xAA |
607ca46e DH |
83 | #define FDDI_UI_CMD 0x03 |
84 | ||
85 | /* Define 802.2 Type 1 header */ | |
86 | struct fddi_8022_1_hdr { | |
eb11022d MR |
87 | __u8 dsap; /* destination service access point */ |
88 | __u8 ssap; /* source service access point */ | |
89 | __u8 ctrl; /* control byte #1 */ | |
607ca46e DH |
90 | } __attribute__((packed)); |
91 | ||
92 | /* Define 802.2 Type 2 header */ | |
93 | struct fddi_8022_2_hdr { | |
eb11022d MR |
94 | __u8 dsap; /* destination service access point */ |
95 | __u8 ssap; /* source service access point */ | |
96 | __u8 ctrl_1; /* control byte #1 */ | |
97 | __u8 ctrl_2; /* control byte #2 */ | |
607ca46e DH |
98 | } __attribute__((packed)); |
99 | ||
100 | /* Define 802.2 SNAP header */ | |
607ca46e | 101 | struct fddi_snap_hdr { |
eb11022d MR |
102 | __u8 dsap; /* always 0xAA */ |
103 | __u8 ssap; /* always 0xAA */ | |
104 | __u8 ctrl; /* always 0x03 */ | |
607ca46e | 105 | __u8 oui[FDDI_K_OUI_LEN]; /* organizational universal id */ |
eb11022d | 106 | __be16 ethertype; /* packet type ID field */ |
607ca46e DH |
107 | } __attribute__((packed)); |
108 | ||
109 | /* Define FDDI LLC frame header */ | |
110 | struct fddihdr { | |
eb11022d MR |
111 | __u8 fc; /* frame control */ |
112 | __u8 daddr[FDDI_K_ALEN]; /* destination address */ | |
113 | __u8 saddr[FDDI_K_ALEN]; /* source address */ | |
114 | union { | |
115 | struct fddi_8022_1_hdr llc_8022_1; | |
116 | struct fddi_8022_2_hdr llc_8022_2; | |
117 | struct fddi_snap_hdr llc_snap; | |
118 | } hdr; | |
607ca46e DH |
119 | } __attribute__((packed)); |
120 | ||
121 | ||
122 | #endif /* _UAPI_LINUX_IF_FDDI_H */ |