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@redhat.com> 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 <asm/byteorder.h> 26 27 /* 28 * HIPPI magic constants. 29 */ 30 31 #define HIPPI_ALEN 6 /* Bytes in one HIPPI hw-addr */ 32 #define HIPPI_HLEN sizeof(struct hippi_hdr) 33 #define HIPPI_ZLEN 0 /* Min. bytes in frame without FCS */ 34 #define HIPPI_DATA_LEN 65280 /* Max. bytes in payload */ 35 #define HIPPI_FRAME_LEN (HIPPI_DATA_LEN + HIPPI_HLEN) 36 /* Max. bytes in frame without FCS */ 37 38 /* 39 * Define LLC and SNAP constants. 40 */ 41 #define HIPPI_EXTENDED_SAP 0xAA 42 #define HIPPI_UI_CMD 0x03 43 44 45 /* 46 * Do we need to list some sort of ID's here? 47 */ 48 49 /* 50 * HIPPI statistics collection data. 51 */ 52 53 struct hipnet_statistics 54 { 55 int rx_packets; /* total packets received */ 56 int tx_packets; /* total packets transmitted */ 57 int rx_errors; /* bad packets received */ 58 int tx_errors; /* packet transmit problems */ 59 int rx_dropped; /* no space in linux buffers */ 60 int tx_dropped; /* no space available in linux */ 61 62 /* detailed rx_errors: */ 63 int rx_length_errors; 64 int rx_over_errors; /* receiver ring buff overflow */ 65 int rx_crc_errors; /* recved pkt with crc error */ 66 int rx_frame_errors; /* recv'd frame alignment error */ 67 int rx_fifo_errors; /* recv'r fifo overrun */ 68 int rx_missed_errors; /* receiver missed packet */ 69 70 /* detailed tx_errors */ 71 int tx_aborted_errors; 72 int tx_carrier_errors; 73 int tx_fifo_errors; 74 int tx_heartbeat_errors; 75 int tx_window_errors; 76 }; 77 78 79 struct hippi_fp_hdr 80 { 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 { 112 #if defined (__BIG_ENDIAN_BITFIELD) 113 __u8 fc:3; 114 __u8 double_wide:1; 115 __u8 message_type:4; 116 #elif defined(__LITTLE_ENDIAN_BITFIELD) 117 __u8 message_type:4; 118 __u8 double_wide:1; 119 __u8 fc:3; 120 #endif 121 __u8 dest_switch_addr[3]; 122 #if defined (__BIG_ENDIAN_BITFIELD) 123 __u8 dest_addr_type:4, 124 src_addr_type:4; 125 #elif defined(__LITTLE_ENDIAN_BITFIELD) 126 __u8 src_addr_type:4, 127 dest_addr_type:4; 128 #endif 129 __u8 src_switch_addr[3]; 130 __u16 reserved; 131 __u8 daddr[HIPPI_ALEN]; 132 __u16 locally_administered; 133 __u8 saddr[HIPPI_ALEN]; 134 } __attribute__ ((packed)); 135 136 #define HIPPI_OUI_LEN 3 137 /* 138 * Looks like the dsap and ssap fields have been swapped by mistake in 139 * RFC 2067 "IP over HIPPI". 140 */ 141 struct hippi_snap_hdr 142 { 143 __u8 dsap; /* always 0xAA */ 144 __u8 ssap; /* always 0xAA */ 145 __u8 ctrl; /* always 0x03 */ 146 __u8 oui[HIPPI_OUI_LEN]; /* organizational universal id (zero)*/ 147 __be16 ethertype; /* packet type ID field */ 148 } __attribute__ ((packed)); 149 150 struct hippi_hdr 151 { 152 struct hippi_fp_hdr fp; 153 struct hippi_le_hdr le; 154 struct hippi_snap_hdr snap; 155 } __attribute__ ((packed)); 156 157 #endif /* _LINUX_IF_HIPPI_H */ 158