/* * 	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 <asm/types.h> #define CN_IDX_CONNECTOR		0xffffffff#define CN_VAL_CONNECTOR		0xffffffff /* * 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_NETLINK_USERS		4 /* * Maximum connector's message size. */#define CONNECTOR_MAX_MSG_SIZE 	1024 /* * 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];}; /* * Notify structure - requests notification about * registering/unregistering idx/val in range [first, first+range]. */struct cn_notify_req {	__u32 first;	__u32 range;}; /* * Main notification control message * *_notify_num 	- number of appropriate cn_notify_req structures after  *				this struct. * group 		- notification receiver's idx. * len 			- total length of the attached data. */struct cn_ctl_msg {	__u32 idx_notify_num;	__u32 val_notify_num;	__u32 group;	__u32 len;	__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 workqueue_struct *cn_queue; 	struct list_head queue_list;	spinlock_t queue_lock; 	int netlink_groups;	struct sock *nls;}; struct cn_callback_id {	unsigned char name[CN_CBQ_NAMELEN];	struct cb_id id;}; struct cn_callback_data {	void (*destruct_data) (void *);	void *ddata;		void *callback_priv;	void (*callback) (void *); 	void *free;}; struct cn_callback_entry {	struct list_head callback_entry;	struct cn_callback *cb;	struct work_struct work;	struct cn_queue_dev *pdev; 	struct cn_callback_id id;	struct cn_callback_data data; 	int seq, group;	struct sock *nls;}; struct cn_ctl_entry {	struct list_head notify_entry;	struct cn_ctl_msg *msg;}; struct cn_dev {	struct cb_id id; 	u32 seq, groups;	struct sock *nls;	void (*input) (struct sock * sk, int len); 	struct cn_queue_dev *cbdev;}; int cn_add_callback(struct cb_id *, char *, void (*callback) (void *));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, char *name, struct cb_id *id, void (*callback)(void *));void cn_queue_del_callback(struct cn_queue_dev *dev, struct cb_id *id); struct cn_queue_dev *cn_queue_alloc_dev(char *name, struct sock *);void cn_queue_free_dev(struct cn_queue_dev *dev); int cn_cb_equal(struct cb_id *, struct cb_id *); void cn_queue_wrapper(void *data); extern int cn_already_initialized; #endif				/* __KERNEL__ */#endif				/* __CONNECTOR_H */