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422 | giacomo | 1 | /* |
2 | * INET An implementation of the TCP/IP protocol suite for the LINUX |
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3 | * operating system. INET is implemented using the BSD Socket |
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4 | * interface as the means of communication with the user level. |
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5 | * |
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6 | * Global definitions for the HIPPI interface. |
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7 | * |
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8 | * Version: @(#)if_hippi.h 1.0.0 05/26/97 |
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9 | * |
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10 | * Author: Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG> |
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11 | * Donald Becker, <becker@super.org> |
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12 | * Alan Cox, <alan@redhat.com> |
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13 | * Steve Whitehouse, <gw7rrm@eeshack3.swan.ac.uk> |
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14 | * Jes Sorensen, <Jes.Sorensen@cern.ch> |
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15 | * |
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16 | * This program is free software; you can redistribute it and/or |
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17 | * modify it under the terms of the GNU General Public License |
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18 | * as published by the Free Software Foundation; either version |
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19 | * 2 of the License, or (at your option) any later version. |
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20 | */ |
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21 | |||
22 | #ifndef _LINUX_IF_HIPPI_H |
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23 | #define _LINUX_IF_HIPPI_H |
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24 | |||
25 | #include <asm/byteorder.h> |
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26 | |||
27 | /* |
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28 | * HIPPI magic constants. |
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29 | */ |
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30 | |||
31 | #define HIPPI_ALEN 6 /* Bytes in one HIPPI hw-addr */ |
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32 | #define HIPPI_HLEN sizeof(struct hippi_hdr) |
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33 | #define HIPPI_ZLEN 0 /* Min. bytes in frame without FCS */ |
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34 | #define HIPPI_DATA_LEN 65280 /* Max. bytes in payload */ |
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35 | #define HIPPI_FRAME_LEN (HIPPI_DATA_LEN + HIPPI_HLEN) |
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36 | /* Max. bytes in frame without FCS */ |
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37 | |||
38 | /* |
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39 | * Define LLC and SNAP constants. |
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40 | */ |
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41 | #define HIPPI_EXTENDED_SAP 0xAA |
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42 | #define HIPPI_UI_CMD 0x03 |
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43 | |||
44 | |||
45 | /* |
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46 | * Do we need to list some sort of ID's here? |
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47 | */ |
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48 | |||
49 | /* |
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50 | * HIPPI statistics collection data. |
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51 | */ |
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52 | |||
53 | struct hipnet_statistics |
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54 | { |
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55 | int rx_packets; /* total packets received */ |
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56 | int tx_packets; /* total packets transmitted */ |
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57 | int rx_errors; /* bad packets received */ |
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58 | int tx_errors; /* packet transmit problems */ |
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59 | int rx_dropped; /* no space in linux buffers */ |
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60 | int tx_dropped; /* no space available in linux */ |
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61 | |||
62 | /* detailed rx_errors: */ |
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63 | int rx_length_errors; |
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64 | int rx_over_errors; /* receiver ring buff overflow */ |
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65 | int rx_crc_errors; /* recved pkt with crc error */ |
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66 | int rx_frame_errors; /* recv'd frame alignment error */ |
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67 | int rx_fifo_errors; /* recv'r fifo overrun */ |
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68 | int rx_missed_errors; /* receiver missed packet */ |
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69 | |||
70 | /* detailed tx_errors */ |
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71 | int tx_aborted_errors; |
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72 | int tx_carrier_errors; |
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73 | int tx_fifo_errors; |
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74 | int tx_heartbeat_errors; |
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75 | int tx_window_errors; |
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76 | }; |
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77 | |||
78 | |||
79 | struct hippi_fp_hdr |
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80 | { |
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81 | #if 0 |
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82 | __u8 ulp; /* must contain 4 */ |
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83 | #if defined (__BIG_ENDIAN_BITFIELD) |
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84 | __u8 d1_data_present:1; /* must be 1 */ |
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85 | __u8 start_d2_burst_boundary:1; /* must be zero */ |
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86 | __u8 reserved:6; /* must be zero */ |
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87 | #if 0 |
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88 | __u16 reserved1:5; |
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89 | __u16 d1_area_size:8; /* must be 3 */ |
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90 | __u16 d2_offset:3; /* must be zero */ |
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91 | #endif |
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92 | #elif defined(__LITTLE_ENDIAN_BITFIELD) |
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93 | __u8 reserved:6; /* must be zero */ |
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94 | __u8 start_d2_burst_boundary:1; /* must be zero */ |
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95 | __u8 d1_data_present:1; /* must be 1 */ |
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96 | #if 0 |
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97 | __u16 d2_offset:3; /* must be zero */ |
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98 | __u16 d1_area_size:8; /* must be 3 */ |
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99 | __u16 reserved1:5; /* must be zero */ |
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100 | #endif |
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101 | #else |
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102 | #error "Please fix <asm/byteorder.h>" |
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103 | #endif |
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104 | #else |
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105 | __u32 fixed; |
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106 | #endif |
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107 | __u32 d2_size; |
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108 | } __attribute__ ((packed)); |
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109 | |||
110 | struct hippi_le_hdr |
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111 | { |
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112 | #if defined (__BIG_ENDIAN_BITFIELD) |
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113 | __u8 fc:3; |
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114 | __u8 double_wide:1; |
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115 | __u8 message_type:4; |
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116 | #elif defined(__LITTLE_ENDIAN_BITFIELD) |
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117 | __u8 message_type:4; |
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118 | __u8 double_wide:1; |
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119 | __u8 fc:3; |
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120 | #endif |
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121 | __u8 dest_switch_addr[3]; |
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122 | #if defined (__BIG_ENDIAN_BITFIELD) |
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123 | __u8 dest_addr_type:4, |
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124 | src_addr_type:4; |
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125 | #elif defined(__LITTLE_ENDIAN_BITFIELD) |
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126 | __u8 src_addr_type:4, |
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127 | dest_addr_type:4; |
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128 | #endif |
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129 | __u8 src_switch_addr[3]; |
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130 | __u16 reserved; |
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131 | __u8 daddr[HIPPI_ALEN]; |
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132 | __u16 locally_administered; |
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133 | __u8 saddr[HIPPI_ALEN]; |
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134 | } __attribute__ ((packed)); |
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135 | |||
136 | #define HIPPI_OUI_LEN 3 |
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137 | /* |
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138 | * Looks like the dsap and ssap fields have been swapped by mistake in |
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139 | * RFC 2067 "IP over HIPPI". |
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140 | */ |
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141 | struct hippi_snap_hdr |
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142 | { |
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143 | __u8 dsap; /* always 0xAA */ |
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144 | __u8 ssap; /* always 0xAA */ |
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145 | __u8 ctrl; /* always 0x03 */ |
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146 | __u8 oui[HIPPI_OUI_LEN]; /* organizational universal id (zero)*/ |
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147 | __u16 ethertype; /* packet type ID field */ |
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148 | } __attribute__ ((packed)); |
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149 | |||
150 | struct hippi_hdr |
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151 | { |
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152 | struct hippi_fp_hdr fp; |
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153 | struct hippi_le_hdr le; |
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154 | struct hippi_snap_hdr snap; |
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155 | } __attribute__ ((packed)); |
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156 | |||
157 | #endif /* _LINUX_IF_HIPPI_H */ |