| David Howells | 607ca46 | 2012-10-13 10:46:48 +0100 | [diff] [blame] | 1 | /* |
| 2 | * INET An implementation of the TCP/IP protocol suite for the LINUX |
| 3 | * operating system. INET is implemented using the BSD Socket |
| 4 | * interface as the means of communication with the user level. |
| 5 | * |
| 6 | * Global definitions for the ANSI FDDI interface. |
| 7 | * |
| 8 | * Version: @(#)if_fddi.h 1.0.2 Sep 29 2004 |
| 9 | * |
| 10 | * Author: Lawrence V. Stefani, <stefani@lkg.dec.com> |
| 11 | * |
| 12 | * if_fddi.h is based on previous if_ether.h and if_tr.h work by |
| 13 | * Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG> |
| 14 | * Donald Becker, <becker@super.org> |
| 15 | * Alan Cox, <alan@lxorguk.ukuu.org.uk> |
| 16 | * Steve Whitehouse, <gw7rrm@eeshack3.swan.ac.uk> |
| 17 | * Peter De Schrijver, <stud11@cc4.kuleuven.ac.be> |
| 18 | * |
| 19 | * This program is free software; you can redistribute it and/or |
| 20 | * modify it under the terms of the GNU General Public License |
| 21 | * as published by the Free Software Foundation; either version |
| 22 | * 2 of the License, or (at your option) any later version. |
| 23 | */ |
| 24 | #ifndef _UAPI_LINUX_IF_FDDI_H |
| 25 | #define _UAPI_LINUX_IF_FDDI_H |
| 26 | |
| 27 | #include <linux/types.h> |
| 28 | |
| 29 | /* |
| 30 | * Define max and min legal sizes. The frame sizes do not include |
| 31 | * 4 byte FCS/CRC (frame check sequence). |
| 32 | */ |
| 33 | #define FDDI_K_ALEN 6 /* Octets in one FDDI address */ |
| 34 | #define FDDI_K_8022_HLEN 16 /* Total octets in 802.2 header */ |
| 35 | #define FDDI_K_SNAP_HLEN 21 /* Total octets in 802.2 SNAP header */ |
| 36 | #define FDDI_K_8022_ZLEN 16 /* Min octets in 802.2 frame sans FCS */ |
| 37 | #define FDDI_K_SNAP_ZLEN 21 /* Min octets in 802.2 SNAP frame sans FCS */ |
| 38 | #define FDDI_K_8022_DLEN 4475 /* Max octets in 802.2 payload */ |
| 39 | #define FDDI_K_SNAP_DLEN 4470 /* Max octets in 802.2 SNAP payload */ |
| 40 | #define FDDI_K_LLC_ZLEN 13 /* Min octets in LLC frame sans FCS */ |
| 41 | #define FDDI_K_LLC_LEN 4491 /* Max octets in LLC frame sans FCS */ |
| 42 | |
| 43 | /* Define FDDI Frame Control (FC) Byte values */ |
| 44 | #define FDDI_FC_K_VOID 0x00 |
| 45 | #define FDDI_FC_K_NON_RESTRICTED_TOKEN 0x80 |
| 46 | #define FDDI_FC_K_RESTRICTED_TOKEN 0xC0 |
| 47 | #define FDDI_FC_K_SMT_MIN 0x41 |
| 48 | #define FDDI_FC_K_SMT_MAX 0x4F |
| 49 | #define FDDI_FC_K_MAC_MIN 0xC1 |
| 50 | #define FDDI_FC_K_MAC_MAX 0xCF |
| 51 | #define FDDI_FC_K_ASYNC_LLC_MIN 0x50 |
| 52 | #define FDDI_FC_K_ASYNC_LLC_DEF 0x54 |
| 53 | #define FDDI_FC_K_ASYNC_LLC_MAX 0x5F |
| 54 | #define FDDI_FC_K_SYNC_LLC_MIN 0xD0 |
| 55 | #define FDDI_FC_K_SYNC_LLC_MAX 0xD7 |
| 56 | #define FDDI_FC_K_IMPLEMENTOR_MIN 0x60 |
| 57 | #define FDDI_FC_K_IMPLEMENTOR_MAX 0x6F |
| 58 | #define FDDI_FC_K_RESERVED_MIN 0x70 |
| 59 | #define FDDI_FC_K_RESERVED_MAX 0x7F |
| 60 | |
| 61 | /* Define LLC and SNAP constants */ |
| 62 | #define FDDI_EXTENDED_SAP 0xAA |
| 63 | #define FDDI_UI_CMD 0x03 |
| 64 | |
| 65 | /* Define 802.2 Type 1 header */ |
| 66 | struct fddi_8022_1_hdr { |
| 67 | __u8 dsap; /* destination service access point */ |
| 68 | __u8 ssap; /* source service access point */ |
| 69 | __u8 ctrl; /* control byte #1 */ |
| 70 | } __attribute__((packed)); |
| 71 | |
| 72 | /* Define 802.2 Type 2 header */ |
| 73 | struct fddi_8022_2_hdr { |
| 74 | __u8 dsap; /* destination service access point */ |
| 75 | __u8 ssap; /* source service access point */ |
| 76 | __u8 ctrl_1; /* control byte #1 */ |
| 77 | __u8 ctrl_2; /* control byte #2 */ |
| 78 | } __attribute__((packed)); |
| 79 | |
| 80 | /* Define 802.2 SNAP header */ |
| 81 | #define FDDI_K_OUI_LEN 3 |
| 82 | struct fddi_snap_hdr { |
| 83 | __u8 dsap; /* always 0xAA */ |
| 84 | __u8 ssap; /* always 0xAA */ |
| 85 | __u8 ctrl; /* always 0x03 */ |
| 86 | __u8 oui[FDDI_K_OUI_LEN]; /* organizational universal id */ |
| 87 | __be16 ethertype; /* packet type ID field */ |
| 88 | } __attribute__((packed)); |
| 89 | |
| 90 | /* Define FDDI LLC frame header */ |
| 91 | struct fddihdr { |
| 92 | __u8 fc; /* frame control */ |
| 93 | __u8 daddr[FDDI_K_ALEN]; /* destination address */ |
| 94 | __u8 saddr[FDDI_K_ALEN]; /* source address */ |
| 95 | union |
| 96 | { |
| 97 | struct fddi_8022_1_hdr llc_8022_1; |
| 98 | struct fddi_8022_2_hdr llc_8022_2; |
| 99 | struct fddi_snap_hdr llc_snap; |
| 100 | } hdr; |
| 101 | } __attribute__((packed)); |
| 102 | |
| 103 | |
| 104 | #endif /* _UAPI_LINUX_IF_FDDI_H */ |