connector.h 2.43 KB
Newer Older
1 2 3
/*
 * 	connector.h
 * 
4
 * 2004-2005 Copyright (c) Evgeniy Polyakov <zbr@ioremap.net>
5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
 * 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


25
#include <linux/atomic.h>
26 27 28 29 30

#include <linux/list.h>
#include <linux/workqueue.h>

#include <net/sock.h>
31
#include <uapi/linux/connector.h>
32 33 34 35 36 37 38 39 40 41 42 43 44

#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;
};

45
struct cn_callback_id {
46 47
	unsigned char name[CN_CBQ_NAMELEN];
	struct cb_id id;
48 49
};

50 51
struct cn_callback_entry {
	struct list_head callback_entry;
52
	atomic_t refcnt;
53 54
	struct cn_queue_dev *pdev;

55
	struct cn_callback_id id;
56
	void (*callback) (struct cn_msg *, struct netlink_skb_parms *);
57

58
	u32 seq, group;
59 60 61 62 63 64 65
};

struct cn_dev {
	struct cb_id id;

	u32 seq, groups;
	struct sock *nls;
66
	void (*input) (struct sk_buff *skb);
67 68 69 70

	struct cn_queue_dev *cbdev;
};

71 72
int cn_add_callback(struct cb_id *id, const char *name,
		    void (*callback)(struct cn_msg *, struct netlink_skb_parms *));
73
void cn_del_callback(struct cb_id *);
74
int cn_netlink_send_mult(struct cn_msg *msg, u16 len, u32 portid, u32 group, gfp_t gfp_mask);
75
int cn_netlink_send(struct cn_msg *msg, u32 portid, u32 group, gfp_t gfp_mask);
76

77 78 79
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 *));
80
void cn_queue_del_callback(struct cn_queue_dev *dev, struct cb_id *id);
81
void cn_queue_release_callback(struct cn_callback_entry *);
82

83
struct cn_queue_dev *cn_queue_alloc_dev(const char *name, struct sock *);
84 85 86 87 88
void cn_queue_free_dev(struct cn_queue_dev *dev);

int cn_cb_equal(struct cb_id *, struct cb_id *);

#endif				/* __CONNECTOR_H */