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 35 struct 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 45 struct cn_callback_id { 46 unsigned char name[CN_CBQ_NAMELEN]; 47 struct cb_id id; 48 }; 49 50 struct 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 61 struct 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 71 int cn_add_callback(struct cb_id *id, const char *name, 72 void (*callback)(struct cn_msg *, struct netlink_skb_parms *)); 73 void cn_del_callback(struct cb_id *); 74 int cn_netlink_send_mult(struct cn_msg *msg, u16 len, u32 portid, u32 group, gfp_t gfp_mask); 75 int cn_netlink_send(struct cn_msg *msg, u32 portid, u32 group, gfp_t gfp_mask); 76 77 int 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 *)); 80 void cn_queue_del_callback(struct cn_queue_dev *dev, struct cb_id *id); 81 void cn_queue_release_callback(struct cn_callback_entry *); 82 83 struct cn_queue_dev *cn_queue_alloc_dev(const char *name, struct sock *); 84 void cn_queue_free_dev(struct cn_queue_dev *dev); 85 86 int cn_cb_equal(struct cb_id *, struct cb_id *); 87 88 #endif /* __CONNECTOR_H */ 89