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Evgeniy Polyakov7672d0b2005-09-11 19:15:07 -07001/*
2 * connector.h
3 *
Evgeniy Polyakova8018762011-08-25 15:59:06 -07004 * 2004-2005 Copyright (c) Evgeniy Polyakov <zbr@ioremap.net>
Evgeniy Polyakov7672d0b2005-09-11 19:15:07 -07005 * 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 */
Evgeniy Polyakov7672d0b2005-09-11 19:15:07 -070021#ifndef __CONNECTOR_H
22#define __CONNECTOR_H
23
Evgeniy Polyakov7672d0b2005-09-11 19:15:07 -070024
Arun Sharma600634972011-07-26 16:09:06 -070025#include <linux/atomic.h>
Evgeniy Polyakov7672d0b2005-09-11 19:15:07 -070026
27#include <linux/list.h>
28#include <linux/workqueue.h>
29
30#include <net/sock.h>
David Howells607ca462012-10-13 10:46:48 +010031#include <uapi/linux/connector.h>
Evgeniy Polyakov7672d0b2005-09-11 19:15:07 -070032
33#define CN_CBQ_NAMELEN 32
34
35struct cn_queue_dev {
36 atomic_t refcnt;
37 unsigned char name[CN_CBQ_NAMELEN];
38
Evgeniy Polyakov7672d0b2005-09-11 19:15:07 -070039 struct list_head queue_list;
40 spinlock_t queue_lock;
41
Evgeniy Polyakov7672d0b2005-09-11 19:15:07 -070042 struct sock *nls;
43};
44
Evgeniy Polyakovacd042b2005-09-26 15:06:50 -070045struct cn_callback_id {
Evgeniy Polyakov7672d0b2005-09-11 19:15:07 -070046 unsigned char name[CN_CBQ_NAMELEN];
Evgeniy Polyakov7672d0b2005-09-11 19:15:07 -070047 struct cb_id id;
Evgeniy Polyakovacd042b2005-09-26 15:06:50 -070048};
49
Evgeniy Polyakov7672d0b2005-09-11 19:15:07 -070050struct cn_callback_entry {
51 struct list_head callback_entry;
Patrick McHardy04f482f2011-03-28 08:39:36 +000052 atomic_t refcnt;
Evgeniy Polyakov7672d0b2005-09-11 19:15:07 -070053 struct cn_queue_dev *pdev;
54
Evgeniy Polyakovacd042b2005-09-26 15:06:50 -070055 struct cn_callback_id id;
Patrick McHardy04f482f2011-03-28 08:39:36 +000056 void (*callback) (struct cn_msg *, struct netlink_skb_parms *);
Evgeniy Polyakov7672d0b2005-09-11 19:15:07 -070057
Li Zefan6e328142008-01-04 01:59:42 -080058 u32 seq, group;
Evgeniy Polyakov7672d0b2005-09-11 19:15:07 -070059};
60
Evgeniy Polyakov7672d0b2005-09-11 19:15:07 -070061struct cn_dev {
62 struct cb_id id;
63
64 u32 seq, groups;
65 struct sock *nls;
Denis V. Lunevcd40b7d2007-10-10 21:15:29 -070066 void (*input) (struct sk_buff *skb);
Evgeniy Polyakov7672d0b2005-09-11 19:15:07 -070067
68 struct cn_queue_dev *cbdev;
69};
70
Joe Perches008536e2011-02-19 15:45:29 -080071int cn_add_callback(struct cb_id *id, const char *name,
72 void (*callback)(struct cn_msg *, struct netlink_skb_parms *));
Evgeniy Polyakov7672d0b2005-09-11 19:15:07 -070073void cn_del_callback(struct cb_id *);
Al Virodd0fc662005-10-07 07:46:04 +010074int cn_netlink_send(struct cn_msg *, u32, gfp_t);
Evgeniy Polyakov7672d0b2005-09-11 19:15:07 -070075
Joe Perches008536e2011-02-19 15:45:29 -080076int cn_queue_add_callback(struct cn_queue_dev *dev, const char *name,
77 struct cb_id *id,
78 void (*callback)(struct cn_msg *, struct netlink_skb_parms *));
Evgeniy Polyakov7672d0b2005-09-11 19:15:07 -070079void cn_queue_del_callback(struct cn_queue_dev *dev, struct cb_id *id);
Patrick McHardy04f482f2011-03-28 08:39:36 +000080void cn_queue_release_callback(struct cn_callback_entry *);
Evgeniy Polyakov7672d0b2005-09-11 19:15:07 -070081
Joe Perches008536e2011-02-19 15:45:29 -080082struct cn_queue_dev *cn_queue_alloc_dev(const char *name, struct sock *);
Evgeniy Polyakov7672d0b2005-09-11 19:15:07 -070083void cn_queue_free_dev(struct cn_queue_dev *dev);
84
85int cn_cb_equal(struct cb_id *, struct cb_id *);
86
Evgeniy Polyakov7672d0b2005-09-11 19:15:07 -070087#endif /* __CONNECTOR_H */