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kernel/linux-imx6_3.14.28/include/linux/connector.h 2.31 KB
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  /*
   * 	connector.h
   * 
   * 2004-2005 Copyright (c) Evgeniy Polyakov <zbr@ioremap.net>
   * 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 <linux/atomic.h>
  
  #include <linux/list.h>
  #include <linux/workqueue.h>
  
  #include <net/sock.h>
  #include <uapi/linux/connector.h>
  
  #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;
  };
  
  struct cn_callback_id {
  	unsigned char name[CN_CBQ_NAMELEN];
  	struct cb_id id;
  };
  
  struct cn_callback_entry {
  	struct list_head callback_entry;
  	atomic_t refcnt;
  	struct cn_queue_dev *pdev;
  
  	struct cn_callback_id id;
  	void (*callback) (struct cn_msg *, struct netlink_skb_parms *);
  
  	u32 seq, group;
  };
  
  struct cn_dev {
  	struct cb_id id;
  
  	u32 seq, groups;
  	struct sock *nls;
  	void (*input) (struct sk_buff *skb);
  
  	struct cn_queue_dev *cbdev;
  };
  
  int cn_add_callback(struct cb_id *id, const char *name,
  		    void (*callback)(struct cn_msg *, struct netlink_skb_parms *));
  void cn_del_callback(struct cb_id *);
  int cn_netlink_send(struct cn_msg *, u32, gfp_t);
  
  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 *));
  void cn_queue_del_callback(struct cn_queue_dev *dev, struct cb_id *id);
  void cn_queue_release_callback(struct cn_callback_entry *);
  
  struct cn_queue_dev *cn_queue_alloc_dev(const char *name, struct sock *);
  void cn_queue_free_dev(struct cn_queue_dev *dev);
  
  int cn_cb_equal(struct cb_id *, struct cb_id *);
  
  #endif				/* __CONNECTOR_H */