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#define CN_VSS_IDX			0xA     /* HyperV VSS */
48#define CN_VSS_VAL			0x1     /* queries from the kernel */
49
50
51#define CN_NETLINK_USERS		11	/* Highest index + 1 */
52
53/*
54 * Maximum connector's message size.
55 */
56#define CONNECTOR_MAX_MSG_SIZE		16384
57
58/*
59 * idx and val are unique identifiers which
60 * are used for message routing and
61 * must be registered in connector.h for in-kernel usage.
62 */
63
64struct cb_id {
65	__u32 idx;
66	__u32 val;
67};
68
69struct cn_msg {
70	struct cb_id id;
71
72	__u32 seq;
73	__u32 ack;
74
75	__u16 len;		/* Length of the following data */
76	__u16 flags;
77	__u8 data[0];
78};
79
80#endif /* _UAPI__CONNECTOR_H */
81