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Linux/include/uapi/linux/if_fddi.h

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  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
 37                                            FCS */
 38 #define FDDI_K_SNAP_ZLEN        21      /* Min octets in 802.2 SNAP frame sans
 39                                            FCS */
 40 #define FDDI_K_8022_DLEN        4475    /* Max octets in 802.2 payload */
 41 #define FDDI_K_SNAP_DLEN        4470    /* Max octets in 802.2 SNAP payload */
 42 #define FDDI_K_LLC_ZLEN         13      /* Min octets in LLC frame sans FCS */
 43 #define FDDI_K_LLC_LEN          4491    /* Max octets in LLC frame sans FCS */
 44 #define FDDI_K_OUI_LEN          3       /* Octets in OUI in 802.2 SNAP
 45                                            header */
 46 
 47 /* Define FDDI Frame Control (FC) Byte values */
 48 #define FDDI_FC_K_VOID                  0x00
 49 #define FDDI_FC_K_NON_RESTRICTED_TOKEN  0x80
 50 #define FDDI_FC_K_RESTRICTED_TOKEN      0xC0
 51 #define FDDI_FC_K_SMT_MIN               0x41
 52 #define FDDI_FC_K_SMT_MAX               0x4F
 53 #define FDDI_FC_K_MAC_MIN               0xC1
 54 #define FDDI_FC_K_MAC_MAX               0xCF
 55 #define FDDI_FC_K_ASYNC_LLC_MIN         0x50
 56 #define FDDI_FC_K_ASYNC_LLC_DEF         0x54
 57 #define FDDI_FC_K_ASYNC_LLC_MAX         0x5F
 58 #define FDDI_FC_K_SYNC_LLC_MIN          0xD0
 59 #define FDDI_FC_K_SYNC_LLC_MAX          0xD7
 60 #define FDDI_FC_K_IMPLEMENTOR_MIN       0x60
 61 #define FDDI_FC_K_IMPLEMENTOR_MAX       0x6F
 62 #define FDDI_FC_K_RESERVED_MIN          0x70
 63 #define FDDI_FC_K_RESERVED_MAX          0x7F
 64 
 65 /* Define LLC and SNAP constants */
 66 #define FDDI_EXTENDED_SAP               0xAA
 67 #define FDDI_UI_CMD                     0x03
 68 
 69 /* Define 802.2 Type 1 header */
 70 struct fddi_8022_1_hdr {
 71         __u8    dsap;                   /* destination service access point */
 72         __u8    ssap;                   /* source service access point */
 73         __u8    ctrl;                   /* control byte #1 */
 74 } __attribute__((packed));
 75 
 76 /* Define 802.2 Type 2 header */
 77 struct fddi_8022_2_hdr {
 78         __u8    dsap;                   /* destination service access point */
 79         __u8    ssap;                   /* source service access point */
 80         __u8    ctrl_1;                 /* control byte #1 */
 81         __u8    ctrl_2;                 /* control byte #2 */
 82 } __attribute__((packed));
 83 
 84 /* Define 802.2 SNAP header */
 85 struct fddi_snap_hdr {
 86         __u8    dsap;                   /* always 0xAA */
 87         __u8    ssap;                   /* always 0xAA */
 88         __u8    ctrl;                   /* always 0x03 */
 89         __u8    oui[FDDI_K_OUI_LEN];    /* organizational universal id */
 90         __be16  ethertype;              /* packet type ID field */
 91 } __attribute__((packed));
 92 
 93 /* Define FDDI LLC frame header */
 94 struct fddihdr {
 95         __u8    fc;                     /* frame control */
 96         __u8    daddr[FDDI_K_ALEN];     /* destination address */
 97         __u8    saddr[FDDI_K_ALEN];     /* source address */
 98         union {
 99                 struct fddi_8022_1_hdr  llc_8022_1;
100                 struct fddi_8022_2_hdr  llc_8022_2;
101                 struct fddi_snap_hdr    llc_snap;
102         } hdr;
103 } __attribute__((packed));
104 
105 
106 #endif /* _UAPI_LINUX_IF_FDDI_H */
107 

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