include/uapi/linux/if_hippi.h

   1 /* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
   2 /*
   3  * INET         An implementation of the TCP/IP protocol suite for the LINUX
   4  *              operating system.  INET is implemented using the  BSD Socket
   5  *              interface as the means of communication with the user level.
   6  *
   7  *              Global definitions for the HIPPI interface.
   8  *
   9  * Version:     @(#)if_hippi.h  1.0.0   05/26/97
  10  *
  11  * Author:      Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
  12  *              Donald Becker, <becker@super.org>
  13  *              Alan Cox, <alan@lxorguk.ukuu.org.uk>
  14  *              Steve Whitehouse, <gw7rrm@eeshack3.swan.ac.uk>
  15  *              Jes Sorensen, <Jes.Sorensen@cern.ch>
  16  *
  17  *              This program is free software; you can redistribute it and/or
  18  *              modify it under the terms of the GNU General Public License
  19  *              as published by the Free Software Foundation; either version
  20  *              2 of the License, or (at your option) any later version.
  21  */
  22
  23 #ifndef _LINUX_IF_HIPPI_H
  24 #define _LINUX_IF_HIPPI_H
  25
  26 #include <linux/types.h>
  27 #include <asm/byteorder.h>
  28
  29 /*
  30  *      HIPPI magic constants.
  31  */
  32
  33 #define HIPPI_ALEN      6               /* Bytes in one HIPPI hw-addr      */
  34 #define HIPPI_HLEN      sizeof(struct hippi_hdr)
  35 #define HIPPI_ZLEN      0               /* Min. bytes in frame without FCS */
  36 #define HIPPI_DATA_LEN  65280           /* Max. bytes in payload           */
  37 #define HIPPI_FRAME_LEN (HIPPI_DATA_LEN + HIPPI_HLEN)
  38                                         /* Max. bytes in frame without FCS */
  39
  40 /*
  41  * Define LLC and SNAP constants.
  42  */
  43 #define HIPPI_EXTENDED_SAP      0xAA
  44 #define HIPPI_UI_CMD            0x03
  45
  46
  47 /*
  48  *      Do we need to list some sort of ID's here?
  49  */
  50
  51 /*
  52  *      HIPPI statistics collection data.
  53  */
  54
  55 struct hipnet_statistics {
  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 #if 0
  82         __u8            ulp;                            /* must contain 4 */
  83 #if defined (__BIG_ENDIAN_BITFIELD)
  84         __u8            d1_data_present:1;              /* must be 1 */
  85         __u8            start_d2_burst_boundary:1;      /* must be zero */
  86         __u8            reserved:6;                     /* must be zero */
  87 #if 0
  88         __u16           reserved1:5;
  89         __u16           d1_area_size:8;                 /* must be 3 */
  90         __u16           d2_offset:3;                    /* must be zero */
  91 #endif
  92 #elif defined(__LITTLE_ENDIAN_BITFIELD)
  93         __u8            reserved:6;                     /* must be zero */
  94         __u8            start_d2_burst_boundary:1;      /* must be zero */
  95         __u8            d1_data_present:1;              /* must be 1 */
  96 #if 0
  97         __u16           d2_offset:3;                    /* must be zero */
  98         __u16           d1_area_size:8;                 /* must be 3 */
  99         __u16           reserved1:5;                    /* must be zero */
 100 #endif
 101 #else
 102 #error  "Please fix <asm/byteorder.h>"
 103 #endif
 104 #else
 105         __be32          fixed;
 106 #endif
 107         __be32          d2_size;
 108 } __attribute__((packed));
 109
 110 struct hippi_le_hdr {
 111 #if defined (__BIG_ENDIAN_BITFIELD)
 112         __u8            fc:3;
 113         __u8            double_wide:1;
 114         __u8            message_type:4;
 115 #elif defined(__LITTLE_ENDIAN_BITFIELD)
 116         __u8            message_type:4;
 117         __u8            double_wide:1;
 118         __u8            fc:3;
 119 #endif
 120         __u8            dest_switch_addr[3];
 121 #if defined (__BIG_ENDIAN_BITFIELD)
 122         __u8            dest_addr_type:4,
 123                         src_addr_type:4;
 124 #elif defined(__LITTLE_ENDIAN_BITFIELD)
 125         __u8            src_addr_type:4,
 126                         dest_addr_type:4;
 127 #endif
 128         __u8            src_switch_addr[3];
 129         __u16           reserved;
 130         __u8            daddr[HIPPI_ALEN];
 131         __u16           locally_administered;
 132         __u8            saddr[HIPPI_ALEN];
 133 } __attribute__((packed));
 134
 135 #define HIPPI_OUI_LEN   3
 136 /*
 137  * Looks like the dsap and ssap fields have been swapped by mistake in
 138  * RFC 2067 "IP over HIPPI".
 139  */
 140 struct hippi_snap_hdr {
 141         __u8    dsap;                   /* always 0xAA */
 142         __u8    ssap;                   /* always 0xAA */
 143         __u8    ctrl;                   /* always 0x03 */
 144         __u8    oui[HIPPI_OUI_LEN];     /* organizational universal id (zero)*/
 145         __be16  ethertype;              /* packet type ID field */
 146 } __attribute__((packed));
 147
 148 struct hippi_hdr {
 149         struct hippi_fp_hdr     fp;
 150         struct hippi_le_hdr     le;
 151         struct hippi_snap_hdr   snap;
 152 } __attribute__((packed));
 153
 154 #endif  /* _LINUX_IF_HIPPI_H */