linux/include/linux/if_hippi.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 HIPPI interface.
   7 *
   8 * Version:     @(#)if_hippi.h  1.0.0   05/26/97
   9 *
  10 * Author:      Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
  11 *              Donald Becker, <becker@super.org>
  12 *              Alan Cox, <alan@lxorguk.ukuu.org.uk>
  13 *              Steve Whitehouse, <gw7rrm@eeshack3.swan.ac.uk>
  14 *              Jes Sorensen, <Jes.Sorensen@cern.ch>
  15 *
  16 *              This program is free software; you can redistribute it and/or
  17 *              modify it under the terms of the GNU General Public License
  18 *              as published by the Free Software Foundation; either version
  19 *              2 of the License, or (at your option) any later version.
  20 */
  21 
  22#ifndef _LINUX_IF_HIPPI_H
  23#define _LINUX_IF_HIPPI_H
  24
  25#include <linux/types.h>
  26#include <asm/byteorder.h>
  27
  28/*
  29 *      HIPPI magic constants.
  30 */
  31
  32#define HIPPI_ALEN      6               /* Bytes in one HIPPI hw-addr      */
  33#define HIPPI_HLEN      sizeof(struct hippi_hdr)
  34#define HIPPI_ZLEN      0               /* Min. bytes in frame without FCS */
  35#define HIPPI_DATA_LEN  65280           /* Max. bytes in payload           */
  36#define HIPPI_FRAME_LEN (HIPPI_DATA_LEN + HIPPI_HLEN)
  37                                        /* Max. bytes in frame without FCS */
  38
  39/*
  40 * Define LLC and SNAP constants.
  41 */
  42#define HIPPI_EXTENDED_SAP      0xAA
  43#define HIPPI_UI_CMD            0x03
  44
  45
  46/*
  47 *      Do we need to list some sort of ID's here?
  48 */
  49
  50/*
  51 *      HIPPI statistics collection data. 
  52 */
  53 
  54struct hipnet_statistics {
  55        int     rx_packets;             /* total packets received       */
  56        int     tx_packets;             /* total packets transmitted    */
  57        int     rx_errors;              /* bad packets received         */
  58        int     tx_errors;              /* packet transmit problems     */
  59        int     rx_dropped;             /* no space in linux buffers    */
  60        int     tx_dropped;             /* no space available in linux  */
  61
  62        /* detailed rx_errors: */
  63        int     rx_length_errors;
  64        int     rx_over_errors;         /* receiver ring buff overflow  */
  65        int     rx_crc_errors;          /* recved pkt with crc error    */
  66        int     rx_frame_errors;        /* recv'd frame alignment error */
  67        int     rx_fifo_errors;         /* recv'r fifo overrun          */
  68        int     rx_missed_errors;       /* receiver missed packet       */
  69
  70        /* detailed tx_errors */
  71        int     tx_aborted_errors;
  72        int     tx_carrier_errors;
  73        int     tx_fifo_errors;
  74        int     tx_heartbeat_errors;
  75        int     tx_window_errors;
  76};
  77
  78
  79struct hippi_fp_hdr {
  80#if 0
  81        __u8            ulp;                            /* must contain 4 */
  82#if defined (__BIG_ENDIAN_BITFIELD)
  83        __u8            d1_data_present:1;              /* must be 1 */
  84        __u8            start_d2_burst_boundary:1;      /* must be zero */
  85        __u8            reserved:6;                     /* must be zero */
  86#if 0
  87        __u16           reserved1:5;
  88        __u16           d1_area_size:8;                 /* must be 3 */
  89        __u16           d2_offset:3;                    /* must be zero */
  90#endif
  91#elif defined(__LITTLE_ENDIAN_BITFIELD)
  92        __u8            reserved:6;                     /* must be zero */
  93        __u8            start_d2_burst_boundary:1;      /* must be zero */
  94        __u8            d1_data_present:1;              /* must be 1 */
  95#if 0
  96        __u16           d2_offset:3;                    /* must be zero */
  97        __u16           d1_area_size:8;                 /* must be 3 */
  98        __u16           reserved1:5;                    /* must be zero */
  99#endif
 100#else
 101#error  "Please fix <asm/byteorder.h>"
 102#endif
 103#else
 104        __be32          fixed;
 105#endif
 106        __be32          d2_size;
 107} __attribute__((packed));
 108
 109struct hippi_le_hdr {
 110#if defined (__BIG_ENDIAN_BITFIELD)
 111        __u8            fc:3;
 112        __u8            double_wide:1;
 113        __u8            message_type:4;
 114#elif defined(__LITTLE_ENDIAN_BITFIELD)
 115        __u8            message_type:4;
 116        __u8            double_wide:1;
 117        __u8            fc:3;
 118#endif
 119        __u8            dest_switch_addr[3];
 120#if defined (__BIG_ENDIAN_BITFIELD)
 121        __u8            dest_addr_type:4,
 122                        src_addr_type:4;
 123#elif defined(__LITTLE_ENDIAN_BITFIELD)
 124        __u8            src_addr_type:4,
 125                        dest_addr_type:4;
 126#endif
 127        __u8            src_switch_addr[3];
 128        __u16           reserved;
 129        __u8            daddr[HIPPI_ALEN];
 130        __u16           locally_administered;
 131        __u8            saddr[HIPPI_ALEN];
 132} __attribute__((packed));
 133
 134#define HIPPI_OUI_LEN   3
 135/*
 136 * Looks like the dsap and ssap fields have been swapped by mistake in
 137 * RFC 2067 "IP over HIPPI".
 138 */
 139struct hippi_snap_hdr {
 140        __u8    dsap;                   /* always 0xAA */
 141        __u8    ssap;                   /* always 0xAA */
 142        __u8    ctrl;                   /* always 0x03 */
 143        __u8    oui[HIPPI_OUI_LEN];     /* organizational universal id (zero)*/
 144        __be16  ethertype;              /* packet type ID field */
 145} __attribute__((packed));
 146
 147struct hippi_hdr {
 148        struct hippi_fp_hdr     fp;
 149        struct hippi_le_hdr     le;
 150        struct hippi_snap_hdr   snap;
 151} __attribute__((packed));
 152
 153#endif  /* _LINUX_IF_HIPPI_H */
 154
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