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 (at) uWalt.NL.Mugnet.ORG> 11 * Donald Becker, <becker (at) super.org> 12 * Alan Cox, <alan (at) lxorguk.ukuu.org.uk> 13 * Steve Whitehouse, <gw7rrm (at) eeshack3.swan.ac.uk> 14 * Jes Sorensen, <Jes.Sorensen (at) 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 */ 159
