1e2be04c7SGreg Kroah-Hartman /* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */ 2607ca46eSDavid Howells /* 3607ca46eSDavid Howells * INET An implementation of the TCP/IP protocol suite for the LINUX 4607ca46eSDavid Howells * operating system. INET is implemented using the BSD Socket 5607ca46eSDavid Howells * interface as the means of communication with the user level. 6607ca46eSDavid Howells * 7607ca46eSDavid Howells * Global definitions for the ANSI FDDI interface. 8607ca46eSDavid Howells * 961414f5eSMaciej W. Rozycki * Version: @(#)if_fddi.h 1.0.3 Oct 6 2018 10607ca46eSDavid Howells * 1161414f5eSMaciej W. Rozycki * Author: Lawrence V. Stefani, <stefani@yahoo.com> 12*e56763eeSMaciej W. Rozycki * Maintainer: Maciej W. Rozycki, <macro@orcam.me.uk> 13607ca46eSDavid Howells * 14607ca46eSDavid Howells * if_fddi.h is based on previous if_ether.h and if_tr.h work by 15607ca46eSDavid Howells * Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG> 16607ca46eSDavid Howells * Donald Becker, <becker@super.org> 17607ca46eSDavid Howells * Alan Cox, <alan@lxorguk.ukuu.org.uk> 18607ca46eSDavid Howells * Steve Whitehouse, <gw7rrm@eeshack3.swan.ac.uk> 19607ca46eSDavid Howells * Peter De Schrijver, <stud11@cc4.kuleuven.ac.be> 20607ca46eSDavid Howells * 21607ca46eSDavid Howells * This program is free software; you can redistribute it and/or 22607ca46eSDavid Howells * modify it under the terms of the GNU General Public License 23607ca46eSDavid Howells * as published by the Free Software Foundation; either version 24607ca46eSDavid Howells * 2 of the License, or (at your option) any later version. 25607ca46eSDavid Howells */ 26607ca46eSDavid Howells #ifndef _UAPI_LINUX_IF_FDDI_H 27607ca46eSDavid Howells #define _UAPI_LINUX_IF_FDDI_H 28607ca46eSDavid Howells 29607ca46eSDavid Howells #include <linux/types.h> 30607ca46eSDavid Howells 31607ca46eSDavid Howells /* 32607ca46eSDavid Howells * Define max and min legal sizes. The frame sizes do not include 33607ca46eSDavid Howells * 4 byte FCS/CRC (frame check sequence). 34607ca46eSDavid Howells */ 35607ca46eSDavid Howells #define FDDI_K_ALEN 6 /* Octets in one FDDI address */ 36607ca46eSDavid Howells #define FDDI_K_8022_HLEN 16 /* Total octets in 802.2 header */ 37607ca46eSDavid Howells #define FDDI_K_SNAP_HLEN 21 /* Total octets in 802.2 SNAP header */ 38eb11022dSMaciej W. Rozycki #define FDDI_K_8022_ZLEN 16 /* Min octets in 802.2 frame sans 39eb11022dSMaciej W. Rozycki FCS */ 40eb11022dSMaciej W. Rozycki #define FDDI_K_SNAP_ZLEN 21 /* Min octets in 802.2 SNAP frame sans 41eb11022dSMaciej W. Rozycki FCS */ 42607ca46eSDavid Howells #define FDDI_K_8022_DLEN 4475 /* Max octets in 802.2 payload */ 43607ca46eSDavid Howells #define FDDI_K_SNAP_DLEN 4470 /* Max octets in 802.2 SNAP payload */ 44607ca46eSDavid Howells #define FDDI_K_LLC_ZLEN 13 /* Min octets in LLC frame sans FCS */ 45607ca46eSDavid Howells #define FDDI_K_LLC_LEN 4491 /* Max octets in LLC frame sans FCS */ 46eb11022dSMaciej W. Rozycki #define FDDI_K_OUI_LEN 3 /* Octets in OUI in 802.2 SNAP 47eb11022dSMaciej W. Rozycki header */ 48607ca46eSDavid Howells 4961414f5eSMaciej W. Rozycki /* Define FDDI Frame Control (FC) Byte masks */ 5061414f5eSMaciej W. Rozycki #define FDDI_FC_K_CLASS_MASK 0x80 /* class bit */ 5161414f5eSMaciej W. Rozycki #define FDDI_FC_K_CLASS_SYNC 0x80 5261414f5eSMaciej W. Rozycki #define FDDI_FC_K_CLASS_ASYNC 0x00 5361414f5eSMaciej W. Rozycki #define FDDI_FC_K_ALEN_MASK 0x40 /* address length bit */ 5461414f5eSMaciej W. Rozycki #define FDDI_FC_K_ALEN_48 0x40 5561414f5eSMaciej W. Rozycki #define FDDI_FC_K_ALEN_16 0x00 5661414f5eSMaciej W. Rozycki #define FDDI_FC_K_FORMAT_MASK 0x30 /* format bits */ 5761414f5eSMaciej W. Rozycki #define FDDI_FC_K_FORMAT_FUTURE 0x30 5861414f5eSMaciej W. Rozycki #define FDDI_FC_K_FORMAT_IMPLEMENTOR 0x20 5961414f5eSMaciej W. Rozycki #define FDDI_FC_K_FORMAT_LLC 0x10 6061414f5eSMaciej W. Rozycki #define FDDI_FC_K_FORMAT_MANAGEMENT 0x00 6161414f5eSMaciej W. Rozycki #define FDDI_FC_K_CONTROL_MASK 0x0f /* control bits */ 6261414f5eSMaciej W. Rozycki 6361414f5eSMaciej W. Rozycki /* Define FDDI Frame Control (FC) Byte specific values */ 64607ca46eSDavid Howells #define FDDI_FC_K_VOID 0x00 65607ca46eSDavid Howells #define FDDI_FC_K_NON_RESTRICTED_TOKEN 0x80 66607ca46eSDavid Howells #define FDDI_FC_K_RESTRICTED_TOKEN 0xC0 67607ca46eSDavid Howells #define FDDI_FC_K_SMT_MIN 0x41 68607ca46eSDavid Howells #define FDDI_FC_K_SMT_MAX 0x4F 69607ca46eSDavid Howells #define FDDI_FC_K_MAC_MIN 0xC1 70607ca46eSDavid Howells #define FDDI_FC_K_MAC_MAX 0xCF 71607ca46eSDavid Howells #define FDDI_FC_K_ASYNC_LLC_MIN 0x50 72607ca46eSDavid Howells #define FDDI_FC_K_ASYNC_LLC_DEF 0x54 73607ca46eSDavid Howells #define FDDI_FC_K_ASYNC_LLC_MAX 0x5F 74607ca46eSDavid Howells #define FDDI_FC_K_SYNC_LLC_MIN 0xD0 75607ca46eSDavid Howells #define FDDI_FC_K_SYNC_LLC_MAX 0xD7 76607ca46eSDavid Howells #define FDDI_FC_K_IMPLEMENTOR_MIN 0x60 77607ca46eSDavid Howells #define FDDI_FC_K_IMPLEMENTOR_MAX 0x6F 78607ca46eSDavid Howells #define FDDI_FC_K_RESERVED_MIN 0x70 79607ca46eSDavid Howells #define FDDI_FC_K_RESERVED_MAX 0x7F 80607ca46eSDavid Howells 81607ca46eSDavid Howells /* Define LLC and SNAP constants */ 82607ca46eSDavid Howells #define FDDI_EXTENDED_SAP 0xAA 83607ca46eSDavid Howells #define FDDI_UI_CMD 0x03 84607ca46eSDavid Howells 85607ca46eSDavid Howells /* Define 802.2 Type 1 header */ 86607ca46eSDavid Howells struct fddi_8022_1_hdr { 87607ca46eSDavid Howells __u8 dsap; /* destination service access point */ 88607ca46eSDavid Howells __u8 ssap; /* source service access point */ 89607ca46eSDavid Howells __u8 ctrl; /* control byte #1 */ 90607ca46eSDavid Howells } __attribute__((packed)); 91607ca46eSDavid Howells 92607ca46eSDavid Howells /* Define 802.2 Type 2 header */ 93607ca46eSDavid Howells struct fddi_8022_2_hdr { 94607ca46eSDavid Howells __u8 dsap; /* destination service access point */ 95607ca46eSDavid Howells __u8 ssap; /* source service access point */ 96607ca46eSDavid Howells __u8 ctrl_1; /* control byte #1 */ 97607ca46eSDavid Howells __u8 ctrl_2; /* control byte #2 */ 98607ca46eSDavid Howells } __attribute__((packed)); 99607ca46eSDavid Howells 100607ca46eSDavid Howells /* Define 802.2 SNAP header */ 101607ca46eSDavid Howells struct fddi_snap_hdr { 102607ca46eSDavid Howells __u8 dsap; /* always 0xAA */ 103607ca46eSDavid Howells __u8 ssap; /* always 0xAA */ 104607ca46eSDavid Howells __u8 ctrl; /* always 0x03 */ 105607ca46eSDavid Howells __u8 oui[FDDI_K_OUI_LEN]; /* organizational universal id */ 106607ca46eSDavid Howells __be16 ethertype; /* packet type ID field */ 107607ca46eSDavid Howells } __attribute__((packed)); 108607ca46eSDavid Howells 109607ca46eSDavid Howells /* Define FDDI LLC frame header */ 110607ca46eSDavid Howells struct fddihdr { 111607ca46eSDavid Howells __u8 fc; /* frame control */ 112607ca46eSDavid Howells __u8 daddr[FDDI_K_ALEN]; /* destination address */ 113607ca46eSDavid Howells __u8 saddr[FDDI_K_ALEN]; /* source address */ 114eb11022dSMaciej W. Rozycki union { 115607ca46eSDavid Howells struct fddi_8022_1_hdr llc_8022_1; 116607ca46eSDavid Howells struct fddi_8022_2_hdr llc_8022_2; 117607ca46eSDavid Howells struct fddi_snap_hdr llc_snap; 118607ca46eSDavid Howells } hdr; 119607ca46eSDavid Howells } __attribute__((packed)); 120607ca46eSDavid Howells 121607ca46eSDavid Howells 122607ca46eSDavid Howells #endif /* _UAPI_LINUX_IF_FDDI_H */ 123