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1 | /* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */ | |
2 | /* | |
3 | * INET An implementation of the TCP/IP protocol suite for the LINUX | |
4 | * operating system. INET is implemented using the BSD Socket | |
5 | * interface as the means of communication with the user level. | |
6 | * | |
7 | * Global definitions for the HIPPI interface. | |
8 | * | |
9 | * Version: @(#)if_hippi.h 1.0.0 05/26/97 | |
10 | * | |
11 | * Author: Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG> | |
12 | * Donald Becker, <becker@super.org> | |
13 | * Alan Cox, <alan@lxorguk.ukuu.org.uk> | |
14 | * Steve Whitehouse, <gw7rrm@eeshack3.swan.ac.uk> | |
15 | * Jes Sorensen, <Jes.Sorensen@cern.ch> | |
16 | * | |
17 | * This program is free software; you can redistribute it and/or | |
18 | * modify it under the terms of the GNU General Public License | |
19 | * as published by the Free Software Foundation; either version | |
20 | * 2 of the License, or (at your option) any later version. | |
21 | */ | |
22 | ||
23 | #ifndef _LINUX_IF_HIPPI_H | |
24 | #define _LINUX_IF_HIPPI_H | |
25 | ||
26 | #include <linux/types.h> | |
27 | #include <asm/byteorder.h> | |
28 | ||
29 | /* | |
30 | * HIPPI magic constants. | |
31 | */ | |
32 | ||
33 | #define HIPPI_ALEN 6 /* Bytes in one HIPPI hw-addr */ | |
34 | #define HIPPI_HLEN sizeof(struct hippi_hdr) | |
35 | #define HIPPI_ZLEN 0 /* Min. bytes in frame without FCS */ | |
36 | #define HIPPI_DATA_LEN 65280 /* Max. bytes in payload */ | |
37 | #define HIPPI_FRAME_LEN (HIPPI_DATA_LEN + HIPPI_HLEN) | |
38 | /* Max. bytes in frame without FCS */ | |
39 | ||
40 | /* | |
41 | * Define LLC and SNAP constants. | |
42 | */ | |
43 | #define HIPPI_EXTENDED_SAP 0xAA | |
44 | #define HIPPI_UI_CMD 0x03 | |
45 | ||
46 | ||
47 | /* | |
48 | * Do we need to list some sort of ID's here? | |
49 | */ | |
50 | ||
51 | /* | |
52 | * HIPPI statistics collection data. | |
53 | */ | |
54 | ||
55 | struct hipnet_statistics { | |
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 | #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 | #if defined (__BIG_ENDIAN_BITFIELD) | |
112 | __u8 fc:3; | |
113 | __u8 double_wide:1; | |
114 | __u8 message_type:4; | |
115 | #elif defined(__LITTLE_ENDIAN_BITFIELD) | |
116 | __u8 message_type:4; | |
117 | __u8 double_wide:1; | |
118 | __u8 fc:3; | |
119 | #endif | |
120 | __u8 dest_switch_addr[3]; | |
121 | #if defined (__BIG_ENDIAN_BITFIELD) | |
122 | __u8 dest_addr_type:4, | |
123 | src_addr_type:4; | |
124 | #elif defined(__LITTLE_ENDIAN_BITFIELD) | |
125 | __u8 src_addr_type:4, | |
126 | dest_addr_type:4; | |
127 | #endif | |
128 | __u8 src_switch_addr[3]; | |
129 | __u16 reserved; | |
130 | __u8 daddr[HIPPI_ALEN]; | |
131 | __u16 locally_administered; | |
132 | __u8 saddr[HIPPI_ALEN]; | |
133 | } __attribute__((packed)); | |
134 | ||
135 | #define HIPPI_OUI_LEN 3 | |
136 | /* | |
137 | * Looks like the dsap and ssap fields have been swapped by mistake in | |
138 | * RFC 2067 "IP over HIPPI". | |
139 | */ | |
140 | struct hippi_snap_hdr { | |
141 | __u8 dsap; /* always 0xAA */ | |
142 | __u8 ssap; /* always 0xAA */ | |
143 | __u8 ctrl; /* always 0x03 */ | |
144 | __u8 oui[HIPPI_OUI_LEN]; /* organizational universal id (zero)*/ | |
145 | __be16 ethertype; /* packet type ID field */ | |
146 | } __attribute__((packed)); | |
147 | ||
148 | struct hippi_hdr { | |
149 | struct hippi_fp_hdr fp; | |
150 | struct hippi_le_hdr le; | |
151 | struct hippi_snap_hdr snap; | |
152 | } __attribute__((packed)); | |
153 | ||
154 | #endif /* _LINUX_IF_HIPPI_H */ |