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Per Lidenb97bf3f2006-01-02 19:04:38 +01001/*
2 * net/tipc/core.c: TIPC module code
3 *
Per Liden9da1c8b2006-01-11 18:40:41 +01004 * Copyright (c) 2003-2006, Ericsson AB
Allan Stephensa592ea62006-06-25 23:42:47 -07005 * Copyright (c) 2005-2006, Wind River Systems
Per Lidenb97bf3f2006-01-02 19:04:38 +01006 * All rights reserved.
7 *
Per Liden9ea1fd32006-01-11 13:30:43 +01008 * Redistribution and use in source and binary forms, with or without
Per Lidenb97bf3f2006-01-02 19:04:38 +01009 * modification, are permitted provided that the following conditions are met:
10 *
Per Liden9ea1fd32006-01-11 13:30:43 +010011 * 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.
Per Lidenb97bf3f2006-01-02 19:04:38 +010019 *
Per Liden9ea1fd32006-01-11 13:30:43 +010020 * 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
Per Lidenb97bf3f2006-01-02 19:04:38 +010034 * POSSIBILITY OF SUCH DAMAGE.
35 */
36
37#include <linux/init.h>
38#include <linux/module.h>
39#include <linux/kernel.h>
Per Lidenb97bf3f2006-01-02 19:04:38 +010040#include <linux/random.h>
41
42#include "core.h"
43#include "dbg.h"
44#include "ref.h"
45#include "net.h"
46#include "user_reg.h"
47#include "name_table.h"
48#include "subscr.h"
49#include "config.h"
50
Per Lidenb97bf3f2006-01-02 19:04:38 +010051
Allan Stephensa7ca0262008-05-05 01:24:36 -070052#define TIPC_MOD_VER "1.6.4"
Per Lidenb97bf3f2006-01-02 19:04:38 +010053
54#ifndef CONFIG_TIPC_ZONES
55#define CONFIG_TIPC_ZONES 3
56#endif
57
58#ifndef CONFIG_TIPC_CLUSTERS
59#define CONFIG_TIPC_CLUSTERS 1
60#endif
61
62#ifndef CONFIG_TIPC_NODES
63#define CONFIG_TIPC_NODES 255
64#endif
65
66#ifndef CONFIG_TIPC_SLAVE_NODES
67#define CONFIG_TIPC_SLAVE_NODES 0
68#endif
69
70#ifndef CONFIG_TIPC_PORTS
71#define CONFIG_TIPC_PORTS 8191
72#endif
73
74#ifndef CONFIG_TIPC_LOG
75#define CONFIG_TIPC_LOG 0
76#endif
77
78/* global variables used by multiple sub-systems within TIPC */
79
80int tipc_mode = TIPC_NOT_RUNNING;
81int tipc_random;
82atomic_t tipc_user_count = ATOMIC_INIT(0);
83
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +090084const char tipc_alphabet[] =
Allan Stephens3a8d1212006-10-16 21:50:20 -070085 "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789_.";
Per Lidenb97bf3f2006-01-02 19:04:38 +010086
87/* configurable TIPC parameters */
88
89u32 tipc_own_addr;
90int tipc_max_zones;
91int tipc_max_clusters;
92int tipc_max_nodes;
93int tipc_max_slaves;
94int tipc_max_ports;
95int tipc_max_subscriptions;
96int tipc_max_publications;
97int tipc_net_id;
98int tipc_remote_management;
99
100
101int tipc_get_mode(void)
102{
103 return tipc_mode;
104}
105
106/**
Per Liden4323add2006-01-18 00:38:21 +0100107 * tipc_core_stop_net - shut down TIPC networking sub-systems
Per Lidenb97bf3f2006-01-02 19:04:38 +0100108 */
109
Per Liden4323add2006-01-18 00:38:21 +0100110void tipc_core_stop_net(void)
Per Lidenb97bf3f2006-01-02 19:04:38 +0100111{
Per Liden4323add2006-01-18 00:38:21 +0100112 tipc_eth_media_stop();
113 tipc_net_stop();
Per Lidenb97bf3f2006-01-02 19:04:38 +0100114}
115
116/**
117 * start_net - start TIPC networking sub-systems
118 */
119
Per Liden4323add2006-01-18 00:38:21 +0100120int tipc_core_start_net(void)
Per Lidenb97bf3f2006-01-02 19:04:38 +0100121{
122 int res;
123
Per Liden4323add2006-01-18 00:38:21 +0100124 if ((res = tipc_net_start()) ||
125 (res = tipc_eth_media_start())) {
126 tipc_core_stop_net();
Per Lidenb97bf3f2006-01-02 19:04:38 +0100127 }
128 return res;
129}
130
131/**
Per Liden4323add2006-01-18 00:38:21 +0100132 * tipc_core_stop - switch TIPC from SINGLE NODE to NOT RUNNING mode
Per Lidenb97bf3f2006-01-02 19:04:38 +0100133 */
134
Per Liden4323add2006-01-18 00:38:21 +0100135void tipc_core_stop(void)
Per Lidenb97bf3f2006-01-02 19:04:38 +0100136{
137 if (tipc_mode != TIPC_NODE_MODE)
138 return;
139
140 tipc_mode = TIPC_NOT_RUNNING;
141
Per Liden4323add2006-01-18 00:38:21 +0100142 tipc_netlink_stop();
143 tipc_handler_stop();
144 tipc_cfg_stop();
145 tipc_subscr_stop();
146 tipc_reg_stop();
147 tipc_nametbl_stop();
148 tipc_ref_table_stop();
149 tipc_socket_stop();
Per Lidenb97bf3f2006-01-02 19:04:38 +0100150}
151
152/**
Per Liden4323add2006-01-18 00:38:21 +0100153 * tipc_core_start - switch TIPC from NOT RUNNING to SINGLE NODE mode
Per Lidenb97bf3f2006-01-02 19:04:38 +0100154 */
155
Per Liden4323add2006-01-18 00:38:21 +0100156int tipc_core_start(void)
Per Lidenb97bf3f2006-01-02 19:04:38 +0100157{
158 int res;
159
160 if (tipc_mode != TIPC_NOT_RUNNING)
161 return -ENOPROTOOPT;
162
163 get_random_bytes(&tipc_random, sizeof(tipc_random));
164 tipc_mode = TIPC_NODE_MODE;
165
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +0900166 if ((res = tipc_handler_start()) ||
Per Liden4323add2006-01-18 00:38:21 +0100167 (res = tipc_ref_table_init(tipc_max_ports + tipc_max_subscriptions,
168 tipc_random)) ||
169 (res = tipc_reg_start()) ||
170 (res = tipc_nametbl_init()) ||
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +0900171 (res = tipc_k_signal((Handler)tipc_subscr_start, 0)) ||
172 (res = tipc_k_signal((Handler)tipc_cfg_init, 0)) ||
Per Liden4323add2006-01-18 00:38:21 +0100173 (res = tipc_netlink_start()) ||
174 (res = tipc_socket_init())) {
175 tipc_core_stop();
Per Lidenb97bf3f2006-01-02 19:04:38 +0100176 }
177 return res;
178}
179
180
181static int __init tipc_init(void)
182{
183 int res;
184
Allan Stephens025adbe2008-05-05 01:20:04 -0700185 tipc_log_resize(CONFIG_TIPC_LOG);
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +0900186 info("Activated (version " TIPC_MOD_VER
Allan Stephens07020562006-06-29 12:33:51 -0700187 " compiled " __DATE__ " " __TIME__ ")\n");
Per Lidenb97bf3f2006-01-02 19:04:38 +0100188
189 tipc_own_addr = 0;
190 tipc_remote_management = 1;
191 tipc_max_publications = 10000;
192 tipc_max_subscriptions = 2000;
193 tipc_max_ports = delimit(CONFIG_TIPC_PORTS, 127, 65536);
Allan Stephens2535ec52006-06-25 23:38:00 -0700194 tipc_max_zones = delimit(CONFIG_TIPC_ZONES, 1, 255);
Per Lidenb97bf3f2006-01-02 19:04:38 +0100195 tipc_max_clusters = delimit(CONFIG_TIPC_CLUSTERS, 1, 1);
196 tipc_max_nodes = delimit(CONFIG_TIPC_NODES, 8, 2047);
197 tipc_max_slaves = delimit(CONFIG_TIPC_SLAVE_NODES, 0, 2047);
198 tipc_net_id = 4711;
199
Per Liden4323add2006-01-18 00:38:21 +0100200 if ((res = tipc_core_start()))
Per Lidenb97bf3f2006-01-02 19:04:38 +0100201 err("Unable to start in single node mode\n");
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +0900202 else
Per Lidenb97bf3f2006-01-02 19:04:38 +0100203 info("Started in single node mode\n");
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +0900204 return res;
Per Lidenb97bf3f2006-01-02 19:04:38 +0100205}
206
207static void __exit tipc_exit(void)
208{
Per Liden4323add2006-01-18 00:38:21 +0100209 tipc_core_stop_net();
210 tipc_core_stop();
Per Lidenb97bf3f2006-01-02 19:04:38 +0100211 info("Deactivated\n");
Allan Stephens025adbe2008-05-05 01:20:04 -0700212 tipc_log_resize(0);
Per Lidenb97bf3f2006-01-02 19:04:38 +0100213}
214
215module_init(tipc_init);
216module_exit(tipc_exit);
217
218MODULE_DESCRIPTION("TIPC: Transparent Inter Process Communication");
219MODULE_LICENSE("Dual BSD/GPL");
Allan Stephensa592ea62006-06-25 23:42:47 -0700220MODULE_VERSION(TIPC_MOD_VER);
Per Lidenb97bf3f2006-01-02 19:04:38 +0100221
222/* Native TIPC API for kernel-space applications (see tipc.h) */
223
224EXPORT_SYMBOL(tipc_attach);
225EXPORT_SYMBOL(tipc_detach);
226EXPORT_SYMBOL(tipc_get_addr);
227EXPORT_SYMBOL(tipc_get_mode);
228EXPORT_SYMBOL(tipc_createport);
229EXPORT_SYMBOL(tipc_deleteport);
230EXPORT_SYMBOL(tipc_ownidentity);
231EXPORT_SYMBOL(tipc_portimportance);
232EXPORT_SYMBOL(tipc_set_portimportance);
233EXPORT_SYMBOL(tipc_portunreliable);
234EXPORT_SYMBOL(tipc_set_portunreliable);
235EXPORT_SYMBOL(tipc_portunreturnable);
236EXPORT_SYMBOL(tipc_set_portunreturnable);
237EXPORT_SYMBOL(tipc_publish);
238EXPORT_SYMBOL(tipc_withdraw);
239EXPORT_SYMBOL(tipc_connect2port);
240EXPORT_SYMBOL(tipc_disconnect);
241EXPORT_SYMBOL(tipc_shutdown);
242EXPORT_SYMBOL(tipc_isconnected);
243EXPORT_SYMBOL(tipc_peer);
244EXPORT_SYMBOL(tipc_ref_valid);
245EXPORT_SYMBOL(tipc_send);
246EXPORT_SYMBOL(tipc_send_buf);
247EXPORT_SYMBOL(tipc_send2name);
248EXPORT_SYMBOL(tipc_forward2name);
249EXPORT_SYMBOL(tipc_send_buf2name);
250EXPORT_SYMBOL(tipc_forward_buf2name);
251EXPORT_SYMBOL(tipc_send2port);
252EXPORT_SYMBOL(tipc_forward2port);
253EXPORT_SYMBOL(tipc_send_buf2port);
254EXPORT_SYMBOL(tipc_forward_buf2port);
255EXPORT_SYMBOL(tipc_multicast);
256/* EXPORT_SYMBOL(tipc_multicast_buf); not available yet */
257EXPORT_SYMBOL(tipc_ispublished);
258EXPORT_SYMBOL(tipc_available_nodes);
259
260/* TIPC API for external bearers (see tipc_bearer.h) */
261
262EXPORT_SYMBOL(tipc_block_bearer);
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +0900263EXPORT_SYMBOL(tipc_continue);
Per Lidenb97bf3f2006-01-02 19:04:38 +0100264EXPORT_SYMBOL(tipc_disable_bearer);
265EXPORT_SYMBOL(tipc_enable_bearer);
266EXPORT_SYMBOL(tipc_recv_msg);
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +0900267EXPORT_SYMBOL(tipc_register_media);
Per Lidenb97bf3f2006-01-02 19:04:38 +0100268
269/* TIPC API for external APIs (see tipc_port.h) */
270
271EXPORT_SYMBOL(tipc_createport_raw);
Per Lidenb97bf3f2006-01-02 19:04:38 +0100272EXPORT_SYMBOL(tipc_reject_msg);
273EXPORT_SYMBOL(tipc_send_buf_fast);
274EXPORT_SYMBOL(tipc_acknowledge);
275EXPORT_SYMBOL(tipc_get_port);
276EXPORT_SYMBOL(tipc_get_handle);
277