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1/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */2/*3 * INET An implementation of the TCP/IP protocol suite for the LINUX4 * operating system. INET is implemented using the BSD Socket5 * 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 05/26/9710 *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/or18 * modify it under the terms of the GNU General Public License19 * as published by the Free Software Foundation; either version20 * 2 of the License, or (at your option) any later version.21 */22 23#ifndef _LINUX_IF_HIPPI_H24#define _LINUX_IF_HIPPI_H25 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 0xAA44#define HIPPI_UI_CMD 0x0345 46 47/*48 * Do we need to list some sort of ID's here?49 */50 51/*52 * HIPPI statistics collection data. 53 */54 55struct 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 80struct hippi_fp_hdr {81#if 082 __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 088 __u16 reserved1:5;89 __u16 d1_area_size:8; /* must be 3 */90 __u16 d2_offset:3; /* must be zero */91#endif92#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 097 __u16 d2_offset:3; /* must be zero */98 __u16 d1_area_size:8; /* must be 3 */99 __u16 reserved1:5; /* must be zero */100#endif101#else102#error "Please fix <asm/byteorder.h>"103#endif104#else105 __be32 fixed;106#endif107 __be32 d2_size;108} __attribute__((packed));109 110struct 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#endif120 __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#endif128 __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 3136/*137 * Looks like the dsap and ssap fields have been swapped by mistake in138 * RFC 2067 "IP over HIPPI".139 */140struct 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 148struct 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 */155