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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 | |
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 |
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