mm, PM/Freezer: Disable OOM killer when tasks are frozen
[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@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 */