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#ifndef __CONNECTOR_H
22#define __CONNECTOR_H
23
24
25#include <linux/refcount.h>
26
27#include <linux/list.h>
28#include <linux/workqueue.h>
29
30#include <net/sock.h>
31#include <uapi/linux/connector.h>
32
33#define CN_CBQ_NAMELEN 32
34
35struct cn_queue_dev {
36 atomic_t refcnt;
37 unsigned char name[CN_CBQ_NAMELEN];
38
39 struct list_head queue_list;
40 spinlock_t queue_lock;
41
42 struct sock *nls;
43};
44
45struct cn_callback_id {
46 unsigned char name[CN_CBQ_NAMELEN];
47 struct cb_id id;
48};
49
50struct cn_callback_entry {
51 struct list_head callback_entry;
52 refcount_t refcnt;
53 struct cn_queue_dev *pdev;
54
55 struct cn_callback_id id;
56 void (*callback) (struct cn_msg *, struct netlink_skb_parms *);
57
58 u32 seq, group;
59};
60
61struct cn_dev {
62 struct cb_id id;
63
64 u32 seq, groups;
65 struct sock *nls;
66 void (*input) (struct sk_buff *skb);
67
68 struct cn_queue_dev *cbdev;
69};
70
71int cn_add_callback(struct cb_id *id, const char *name,
72 void (*callback)(struct cn_msg *, struct netlink_skb_parms *));
73void cn_del_callback(struct cb_id *);
74int cn_netlink_send_mult(struct cn_msg *msg, u16 len, u32 portid, u32 group, gfp_t gfp_mask);
75int cn_netlink_send(struct cn_msg *msg, u32 portid, u32 group, gfp_t gfp_mask);
76
77int cn_queue_add_callback(struct cn_queue_dev *dev, const char *name,
78 struct cb_id *id,
79 void (*callback)(struct cn_msg *, struct netlink_skb_parms *));
80void cn_queue_del_callback(struct cn_queue_dev *dev, struct cb_id *id);
81void cn_queue_release_callback(struct cn_callback_entry *);
82
83struct cn_queue_dev *cn_queue_alloc_dev(const char *name, struct sock *);
84void cn_queue_free_dev(struct cn_queue_dev *dev);
85
86int cn_cb_equal(struct cb_id *, struct cb_id *);
87
88#endif /* __CONNECTOR_H */
89