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1/*
2 * connector.h
3 *
4 * 2004-2005 Copyright (c) Evgeniy Polyakov <zbr@ioremap.net>
5 * All rights reserved.
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 */
21
22#ifndef _UAPI__CONNECTOR_H
23#define _UAPI__CONNECTOR_H
24
25#include <linux/types.h>
26
27/*
28 * Process Events connector unique ids -- used for message routing
29 */
30#define CN_IDX_PROC 0x1
31#define CN_VAL_PROC 0x1
32#define CN_IDX_CIFS 0x2
33#define CN_VAL_CIFS 0x1
34#define CN_W1_IDX 0x3 /* w1 communication */
35#define CN_W1_VAL 0x1
36#define CN_IDX_V86D 0x4
37#define CN_VAL_V86D_UVESAFB 0x1
38#define CN_IDX_BB 0x5 /* BlackBoard, from the TSP GPL sampling framework */
39#define CN_DST_IDX 0x6
40#define CN_DST_VAL 0x1
41#define CN_IDX_DM 0x7 /* Device Mapper */
42#define CN_VAL_DM_USERSPACE_LOG 0x1
43#define CN_IDX_DRBD 0x8
44#define CN_VAL_DRBD 0x1
45#define CN_KVP_IDX 0x9 /* HyperV KVP */
46#define CN_KVP_VAL 0x1 /* queries from the kernel */
47
48#define CN_NETLINK_USERS 10 /* Highest index + 1 */
49
50/*
51 * Maximum connector's message size.
52 */
53#define CONNECTOR_MAX_MSG_SIZE 16384
54
55/*
56 * idx and val are unique identifiers which
57 * are used for message routing and
58 * must be registered in connector.h for in-kernel usage.
59 */
60
61struct cb_id {
62 __u32 idx;
63 __u32 val;
64};
65
66struct cn_msg {
67 struct cb_id id;
68
69 __u32 seq;
70 __u32 ack;
71
72 __u16 len; /* Length of the following data */
73 __u16 flags;
74 __u8 data[0];
75};
76
77#endif /* _UAPI__CONNECTOR_H */