include/linux/if_hippi.h

   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
  54 struct hipnet_statistics
  55 {
  56         int     rx_packets;             /* total packets received       */
  57         int     tx_packets;             /* total packets transmitted    */
  58         int     rx_errors;              /* bad packets received         */
  59         int     tx_errors;              /* packet transmit problems     */
  60         int     rx_dropped;             /* no space in linux buffers    */
  61         int     tx_dropped;             /* no space available in linux  */
  62
  63         /* detailed rx_errors: */
  64         int     rx_length_errors;
  65         int     rx_over_errors;         /* receiver ring buff overflow  */
  66         int     rx_crc_errors;          /* recved pkt with crc error    */
  67         int     rx_frame_errors;        /* recv'd frame alignment error */
  68         int     rx_fifo_errors;         /* recv'r fifo overrun          */
  69         int     rx_missed_errors;       /* receiver missed packet       */
  70
  71         /* detailed tx_errors */
  72         int     tx_aborted_errors;
  73         int     tx_carrier_errors;
  74         int     tx_fifo_errors;
  75         int     tx_heartbeat_errors;
  76         int     tx_window_errors;
  77 };
  78
  79
  80 struct hippi_fp_hdr
  81 {
  82 #if 0
  83         __u8            ulp;                            /* must contain 4 */
  84 #if defined (__BIG_ENDIAN_BITFIELD)
  85         __u8            d1_data_present:1;              /* must be 1 */
  86         __u8            start_d2_burst_boundary:1;      /* must be zero */
  87         __u8            reserved:6;                     /* must be zero */
  88 #if 0
  89         __u16           reserved1:5;
  90         __u16           d1_area_size:8;                 /* must be 3 */
  91         __u16           d2_offset:3;                    /* must be zero */
  92 #endif
  93 #elif defined(__LITTLE_ENDIAN_BITFIELD)
  94         __u8            reserved:6;                     /* must be zero */
  95         __u8            start_d2_burst_boundary:1;      /* must be zero */
  96         __u8            d1_data_present:1;              /* must be 1 */
  97 #if 0
  98         __u16           d2_offset:3;                    /* must be zero */
  99         __u16           d1_area_size:8;                 /* must be 3 */
 100         __u16           reserved1:5;                    /* must be zero */
 101 #endif
 102 #else
 103 #error  "Please fix <asm/byteorder.h>"
 104 #endif
 105 #else
 106         __be32          fixed;
 107 #endif
 108         __be32          d2_size;
 109 } __attribute__ ((packed));
 110
 111 struct hippi_le_hdr
 112 {
 113 #if defined (__BIG_ENDIAN_BITFIELD)
 114         __u8            fc:3;
 115         __u8            double_wide:1;
 116         __u8            message_type:4;
 117 #elif defined(__LITTLE_ENDIAN_BITFIELD)
 118         __u8            message_type:4;
 119         __u8            double_wide:1;
 120         __u8            fc:3;
 121 #endif
 122         __u8            dest_switch_addr[3];
 123 #if defined (__BIG_ENDIAN_BITFIELD)
 124         __u8            dest_addr_type:4,
 125                         src_addr_type:4;
 126 #elif defined(__LITTLE_ENDIAN_BITFIELD)
 127         __u8            src_addr_type:4,
 128                         dest_addr_type:4;
 129 #endif
 130         __u8            src_switch_addr[3];
 131         __u16           reserved;
 132         __u8            daddr[HIPPI_ALEN];
 133         __u16           locally_administered;
 134         __u8            saddr[HIPPI_ALEN];
 135 } __attribute__ ((packed));
 136
 137 #define HIPPI_OUI_LEN   3
 138 /*
 139  * Looks like the dsap and ssap fields have been swapped by mistake in
 140  * RFC 2067 "IP over HIPPI".
 141  */
 142 struct hippi_snap_hdr
 143 {
 144         __u8    dsap;                   /* always 0xAA */
 145         __u8    ssap;                   /* always 0xAA */
 146         __u8    ctrl;                   /* always 0x03 */
 147         __u8    oui[HIPPI_OUI_LEN];     /* organizational universal id (zero)*/
 148         __be16  ethertype;              /* packet type ID field */
 149 } __attribute__ ((packed));
 150
 151 struct hippi_hdr
 152 {
 153         struct hippi_fp_hdr     fp;
 154         struct hippi_le_hdr     le;
 155         struct hippi_snap_hdr   snap;
 156 } __attribute__ ((packed));
 157
 158 #endif  /* _LINUX_IF_HIPPI_H */