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 */ 155