| 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/atomic.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 | atomic_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 */ |