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1/*
2 * include/net/tipc/tipc_bearer.h: Include file for privileged access to TIPC bearers
3 *
4 * Copyright (c) 2003-2005, Ericsson Research Canada
5 * Copyright (c) 2005, Wind River Systems
6 * Copyright (c) 2005-2006, Ericsson AB
7 * All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions are met:
11 *
12 * Redistributions of source code must retain the above copyright notice, this
13 * list of conditions and the following disclaimer.
14 * Redistributions in binary form must reproduce the above copyright notice,
15 * this list of conditions and the following disclaimer in the documentation
16 * and/or other materials provided with the distribution.
17 * Neither the names of the copyright holders nor the names of its
18 * contributors may be used to endorse or promote products derived from this
19 * software without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
22 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
25 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
31 * POSSIBILITY OF SUCH DAMAGE.
32 */
33
34#ifndef _NET_TIPC_BEARER_H_
35#define _NET_TIPC_BEARER_H_
36
37#ifdef __KERNEL__
38
39#include <linux/tipc.h>
40#include <linux/skbuff.h>
41#include <linux/spinlock.h>
42
43/**
44 * struct tipc_bearer - TIPC bearer info available to privileged users
45 * @usr_handle: pointer to additional user-defined information about bearer
46 * @mtu: max packet size bearer can support
47 * @blocked: non-zero if bearer is blocked
48 * @lock: spinlock for controlling access to bearer
49 * @addr: media-specific address associated with bearer
50 * @name: bearer name (format = media:interface)
51 *
52 * Note: TIPC initializes "name" and "lock" fields; user is responsible for
53 * initialization all other fields when a bearer is enabled.
54 */
55
56struct tipc_bearer {
57 void *usr_handle;
58 u32 mtu;
59 int blocked;
60 spinlock_t lock;
61 struct tipc_media_addr addr;
62 char name[TIPC_MAX_BEARER_NAME];
63};
64
65
66int tipc_register_media(u32 media_type,
67 char *media_name,
68 int (*enable)(struct tipc_bearer *),
69 void (*disable)(struct tipc_bearer *),
70 int (*send_msg)(struct sk_buff *,
71 struct tipc_bearer *,
72 struct tipc_media_addr *),
73 char *(*addr2str)(struct tipc_media_addr *a,
74 char *str_buf,
75 int str_size),
76 struct tipc_media_addr *bcast_addr,
77 const u32 bearer_priority,
78 const u32 link_tolerance, /* [ms] */
79 const u32 send_window_limit);
80
81void tipc_recv_msg(struct sk_buff *buf, struct tipc_bearer *tb_ptr);
82
83int tipc_block_bearer(const char *name);
84void tipc_continue(struct tipc_bearer *tb_ptr);
85
86int tipc_enable_bearer(const char *bearer_name, u32 bcast_scope, u32 priority);
87int tipc_disable_bearer(const char *name);
88
89
90#endif
91
92#endif