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      1 /*
      2  * 	connector.h
      3  *
      4  * 2004-2005 Copyright (c) Evgeniy Polyakov <johnpol (at) 2ka.mipt.ru>
      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 __CONNECTOR_H
     23 #define __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 
     44 #define CN_NETLINK_USERS		8
     45 
     46 /*
     47  * Maximum connector's message size.
     48  */
     49 #define CONNECTOR_MAX_MSG_SIZE		16384
     50 
     51 /*
     52  * idx and val are unique identifiers which
     53  * are used for message routing and
     54  * must be registered in connector.h for in-kernel usage.
     55  */
     56 
     57 struct cb_id {
     58 	__u32 idx;
     59 	__u32 val;
     60 };
     61 
     62 struct cn_msg {
     63 	struct cb_id id;
     64 
     65 	__u32 seq;
     66 	__u32 ack;
     67 
     68 	__u16 len;		/* Length of the following data */
     69 	__u16 flags;
     70 	__u8 data[0];
     71 };
     72 
     73 #endif				/* __CONNECTOR_H */
     74