/* * 	connector.h *  * 2004-2005 Copyright (c) Evgeniy Polyakov <johnpol@2ka.mipt.ru> * All rights reserved. *  * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */ #ifndef __CONNECTOR_H#define __CONNECTOR_H #include <linux/types.h> /* * Process Events connector unique ids -- used for message routing */#define CN_IDX_PROC			0x1#define CN_VAL_PROC			0x1#define CN_IDX_CIFS			0x2#define CN_VAL_CIFS                     0x1#define CN_W1_IDX			0x3	/* w1 communication */#define CN_W1_VAL			0x1#define CN_IDX_V86D			0x4#define CN_VAL_V86D_UVESAFB		0x1#define CN_IDX_BB			0x5	/* BlackBoard, from the TSP GPL sampling framework */#define CN_DST_IDX			0x6#define CN_DST_VAL			0x1#define CN_IDX_DM			0x7	/* Device Mapper */#define CN_VAL_DM_USERSPACE_LOG		0x1#define CN_IDX_DRBD			0x8#define CN_VAL_DRBD			0x1#define CN_KVP_IDX			0x9	/* HyperV KVP */ #define CN_NETLINK_USERS		9 /* * Maximum connector's message size. */#define CONNECTOR_MAX_MSG_SIZE		16384 /* * idx and val are unique identifiers which  * are used for message routing and  * must be registered in connector.h for in-kernel usage. */ struct cb_id {	__u32 idx;	__u32 val;}; struct cn_msg {	struct cb_id id; 	__u32 seq;	__u32 ack; 	__u16 len;		/* Length of the following data */	__u16 flags;	__u8 data[0];}; #ifdef __KERNEL__ #include <asm/atomic.h> #include <linux/list.h>#include <linux/workqueue.h> #include <net/sock.h> #define CN_CBQ_NAMELEN		32 struct cn_queue_dev {	atomic_t refcnt;	unsigned char name[CN_CBQ_NAMELEN]; 	struct list_head queue_list;	spinlock_t queue_lock; 	struct sock *nls;}; struct cn_callback_id {	unsigned char name[CN_CBQ_NAMELEN];	struct cb_id id;}; struct cn_callback_entry {	struct list_head callback_entry;	atomic_t refcnt;	struct cn_queue_dev *pdev; 	struct cn_callback_id id;	void (*callback) (struct cn_msg *, struct netlink_skb_parms *); 	u32 seq, group;}; struct cn_dev {	struct cb_id id; 	u32 seq, groups;	struct sock *nls;	void (*input) (struct sk_buff *skb); 	struct cn_queue_dev *cbdev;}; int cn_add_callback(struct cb_id *id, const char *name,		    void (*callback)(struct cn_msg *, struct netlink_skb_parms *));void cn_del_callback(struct cb_id *);int cn_netlink_send(struct cn_msg *, u32, gfp_t); int cn_queue_add_callback(struct cn_queue_dev *dev, const char *name,			  struct cb_id *id,			  void (*callback)(struct cn_msg *, struct netlink_skb_parms *));void cn_queue_del_callback(struct cn_queue_dev *dev, struct cb_id *id);void cn_queue_release_callback(struct cn_callback_entry *); struct cn_queue_dev *cn_queue_alloc_dev(const char *name, struct sock *);void cn_queue_free_dev(struct cn_queue_dev *dev); int cn_cb_equal(struct cb_id *, struct cb_id *); #endif				/* __KERNEL__ */#endif				/* __CONNECTOR_H */