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git.proxmox.com Git - mirror_ubuntu-zesty-kernel.git/blob - include/linux/connector.h
4 * 2004-2005 Copyright (c) Evgeniy Polyakov <johnpol@2ka.mipt.ru>
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.
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.
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
25 #include <asm/types.h>
27 #define CN_IDX_CONNECTOR 0xffffffff
28 #define CN_VAL_CONNECTOR 0xffffffff
31 * Process Events connector unique ids -- used for message routing
33 #define CN_IDX_PROC 0x1
34 #define CN_VAL_PROC 0x1
36 #define CN_NETLINK_USERS 1
39 * Maximum connector's message size.
41 #define CONNECTOR_MAX_MSG_SIZE 1024
44 * idx and val are unique identifiers which
45 * are used for message routing and
46 * must be registered in connector.h for in-kernel usage.
60 __u16 len
; /* Length of the following data */
66 * Notify structure - requests notification about
67 * registering/unregistering idx/val in range [first, first+range].
69 struct cn_notify_req
{
75 * Main notification control message
76 * *_notify_num - number of appropriate cn_notify_req structures after
78 * group - notification receiver's idx.
79 * len - total length of the attached data.
91 #include <asm/atomic.h>
93 #include <linux/list.h>
94 #include <linux/workqueue.h>
98 #define CN_CBQ_NAMELEN 32
100 struct cn_queue_dev
{
102 unsigned char name
[CN_CBQ_NAMELEN
];
104 struct workqueue_struct
*cn_queue
;
106 struct list_head queue_list
;
107 spinlock_t queue_lock
;
113 struct cn_callback_id
{
114 unsigned char name
[CN_CBQ_NAMELEN
];
118 struct cn_callback_data
{
119 void (*destruct_data
) (void *);
123 void (*callback
) (void *);
128 struct cn_callback_entry
{
129 struct list_head callback_entry
;
130 struct cn_callback
*cb
;
131 struct work_struct work
;
132 struct cn_queue_dev
*pdev
;
134 struct cn_callback_id id
;
135 struct cn_callback_data data
;
141 struct cn_ctl_entry
{
142 struct list_head notify_entry
;
143 struct cn_ctl_msg
*msg
;
151 void (*input
) (struct sock
* sk
, int len
);
153 struct cn_queue_dev
*cbdev
;
156 int cn_add_callback(struct cb_id
*, char *, void (*callback
) (void *));
157 void cn_del_callback(struct cb_id
*);
158 int cn_netlink_send(struct cn_msg
*, u32
, gfp_t
);
160 int cn_queue_add_callback(struct cn_queue_dev
*dev
, char *name
, struct cb_id
*id
, void (*callback
)(void *));
161 void cn_queue_del_callback(struct cn_queue_dev
*dev
, struct cb_id
*id
);
163 struct cn_queue_dev
*cn_queue_alloc_dev(char *name
, struct sock
*);
164 void cn_queue_free_dev(struct cn_queue_dev
*dev
);
166 int cn_cb_equal(struct cb_id
*, struct cb_id
*);
168 void cn_queue_wrapper(void *data
);
170 extern int cn_already_initialized
;
172 #endif /* __KERNEL__ */
173 #endif /* __CONNECTOR_H */