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@lxorguk.ukuu.org.uk> 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 <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 54struct hipnet_statistics { 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 79struct hippi_fp_hdr { 80#if 0 81 __u8 ulp; /* must contain 4 */ 82#if defined (__BIG_ENDIAN_BITFIELD) 83 __u8 d1_data_present:1; /* must be 1 */ 84 __u8 start_d2_burst_boundary:1; /* must be zero */ 85 __u8 reserved:6; /* must be zero */ 86#if 0 87 __u16 reserved1:5; 88 __u16 d1_area_size:8; /* must be 3 */ 89 __u16 d2_offset:3; /* must be zero */ 90#endif 91#elif defined(__LITTLE_ENDIAN_BITFIELD) 92 __u8 reserved:6; /* must be zero */ 93 __u8 start_d2_burst_boundary:1; /* must be zero */ 94 __u8 d1_data_present:1; /* must be 1 */ 95#if 0 96 __u16 d2_offset:3; /* must be zero */ 97 __u16 d1_area_size:8; /* must be 3 */ 98 __u16 reserved1:5; /* must be zero */ 99#endif 100#else 101#error "Please fix <asm/byteorder.h>" 102#endif 103#else 104 __be32 fixed; 105#endif 106 __be32 d2_size; 107} __attribute__((packed)); 108 109struct hippi_le_hdr { 110#if defined (__BIG_ENDIAN_BITFIELD) 111 __u8 fc:3; 112 __u8 double_wide:1; 113 __u8 message_type:4; 114#elif defined(__LITTLE_ENDIAN_BITFIELD) 115 __u8 message_type:4; 116 __u8 double_wide:1; 117 __u8 fc:3; 118#endif 119 __u8 dest_switch_addr[3]; 120#if defined (__BIG_ENDIAN_BITFIELD) 121 __u8 dest_addr_type:4, 122 src_addr_type:4; 123#elif defined(__LITTLE_ENDIAN_BITFIELD) 124 __u8 src_addr_type:4, 125 dest_addr_type:4; 126#endif 127 __u8 src_switch_addr[3]; 128 __u16 reserved; 129 __u8 daddr[HIPPI_ALEN]; 130 __u16 locally_administered; 131 __u8 saddr[HIPPI_ALEN]; 132} __attribute__((packed)); 133 134#define HIPPI_OUI_LEN 3 135/* 136 * Looks like the dsap and ssap fields have been swapped by mistake in 137 * RFC 2067 "IP over HIPPI". 138 */ 139struct hippi_snap_hdr { 140 __u8 dsap; /* always 0xAA */ 141 __u8 ssap; /* always 0xAA */ 142 __u8 ctrl; /* always 0x03 */ 143 __u8 oui[HIPPI_OUI_LEN]; /* organizational universal id (zero)*/ 144 __be16 ethertype; /* packet type ID field */ 145} __attribute__((packed)); 146 147struct hippi_hdr { 148 struct hippi_fp_hdr fp; 149 struct hippi_le_hdr le; 150 struct hippi_snap_hdr snap; 151} __attribute__((packed)); 152 153#endif /* _LINUX_IF_HIPPI_H */ 154