[NET]: net/802: more endian annotations
[linux-2.6.git] / include / linux / if_hippi.h
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 */