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Linux kernel mirror (for testing)
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1/*
2 * include/net/tipc/tipc_bearer.h: Include file for privileged access to TIPC bearers
3 *
4 * Copyright (c) 2003-2006, Ericsson AB
5 * Copyright (c) 2005, Wind River Systems
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions are met:
10 *
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. Neither the names of the copyright holders nor the names of its
17 * contributors may be used to endorse or promote products derived from
18 * this software without specific prior written permission.
19 *
20 * Alternatively, this software may be distributed under the terms of the
21 * GNU General Public License ("GPL") version 2 as published by the Free
22 * Software Foundation.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
25 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
28 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
29 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
30 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
31 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
32 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
33 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
34 * POSSIBILITY OF SUCH DAMAGE.
35 */
36
37#ifndef _NET_TIPC_BEARER_H_
38#define _NET_TIPC_BEARER_H_
39
40#ifdef __KERNEL__
41
42#include <linux/tipc_config.h>
43#include <linux/skbuff.h>
44#include <linux/spinlock.h>
45
46/*
47 * Identifiers of supported TIPC media types
48 */
49
50#define TIPC_MEDIA_TYPE_ETH 1
51
52struct tipc_media_addr {
53 __u32 type;
54 union {
55 __u8 eth_addr[6]; /* Ethernet bearer */
56#if 0
57 /* Prototypes for other possible bearer types */
58
59 struct {
60 __u16 sin_family;
61 __u16 sin_port;
62 struct {
63 __u32 s_addr;
64 } sin_addr;
65 char pad[4];
66 } addr_in; /* IP-based bearer */
67 __u16 sock_descr; /* generic socket bearer */
68#endif
69 } dev_addr;
70};
71
72/**
73 * struct tipc_bearer - TIPC bearer info available to privileged users
74 * @usr_handle: pointer to additional user-defined information about bearer
75 * @mtu: max packet size bearer can support
76 * @blocked: non-zero if bearer is blocked
77 * @lock: spinlock for controlling access to bearer
78 * @addr: media-specific address associated with bearer
79 * @name: bearer name (format = media:interface)
80 *
81 * Note: TIPC initializes "name" and "lock" fields; user is responsible for
82 * initialization all other fields when a bearer is enabled.
83 */
84
85struct tipc_bearer {
86 void *usr_handle;
87 u32 mtu;
88 int blocked;
89 spinlock_t lock;
90 struct tipc_media_addr addr;
91 char name[TIPC_MAX_BEARER_NAME];
92};
93
94
95int tipc_register_media(u32 media_type,
96 char *media_name,
97 int (*enable)(struct tipc_bearer *),
98 void (*disable)(struct tipc_bearer *),
99 int (*send_msg)(struct sk_buff *,
100 struct tipc_bearer *,
101 struct tipc_media_addr *),
102 char *(*addr2str)(struct tipc_media_addr *a,
103 char *str_buf,
104 int str_size),
105 struct tipc_media_addr *bcast_addr,
106 const u32 bearer_priority,
107 const u32 link_tolerance, /* [ms] */
108 const u32 send_window_limit);
109
110void tipc_recv_msg(struct sk_buff *buf, struct tipc_bearer *tb_ptr);
111
112int tipc_block_bearer(const char *name);
113void tipc_continue(struct tipc_bearer *tb_ptr);
114
115int tipc_enable_bearer(const char *bearer_name, u32 bcast_scope, u32 priority);
116int tipc_disable_bearer(const char *name);
117
118
119#endif
120
121#endif