1 files changed, 158 insertions, 0 deletions

diff --git a/include/linux/connector.h b/include/linux/connector.h
new file mode 100644
index 000000000000..96de26301f84
--- /dev/null
+++ b/include/linux/connector.h
@@ -0,0 +1,158 @@
+/*
+ *      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
+
+#define CN_NETLINK_USERS                1
+
+/*
+ * 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 {
+        unsigned char name[CN_CBQ_NAMELEN];
+
+        struct cb_id id;
+        void (*callback) (void *);
+        void *priv;
+};
+
+struct cn_callback_entry {
+        struct list_head callback_entry;
+        struct cn_callback *cb;
+        struct work_struct work;
+        struct cn_queue_dev *pdev;
+
+        void (*destruct_data) (void *);
+        void *ddata;
+
+        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, int);
+
+int cn_queue_add_callback(struct cn_queue_dev *dev, struct cn_callback *cb);
+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 *);
+
+extern int cn_already_initialized;
+
+#endif                          /* __KERNEL__ */
+#endif                          /* __CONNECTOR_H */