2 * net/tipc/core.c: TIPC module code
4 * Copyright (c) 2003-2006, Ericsson AB
5 * Copyright (c) 2005-2006, Wind River Systems
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions are met:
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.
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.
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
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37 #include <linux/init.h>
38 #include <linux/module.h>
39 #include <linux/kernel.h>
40 #include <linux/random.h>
47 #include "name_table.h"
52 #define TIPC_MOD_VER "1.6.4"
54 #ifndef CONFIG_TIPC_ZONES
55 #define CONFIG_TIPC_ZONES 3
58 #ifndef CONFIG_TIPC_CLUSTERS
59 #define CONFIG_TIPC_CLUSTERS 1
62 #ifndef CONFIG_TIPC_NODES
63 #define CONFIG_TIPC_NODES 255
66 #ifndef CONFIG_TIPC_SLAVE_NODES
67 #define CONFIG_TIPC_SLAVE_NODES 0
70 #ifndef CONFIG_TIPC_PORTS
71 #define CONFIG_TIPC_PORTS 8191
74 #ifndef CONFIG_TIPC_LOG
75 #define CONFIG_TIPC_LOG 0
78 /* global variables used by multiple sub-systems within TIPC */
80 int tipc_mode = TIPC_NOT_RUNNING;
82 atomic_t tipc_user_count = ATOMIC_INIT(0);
84 const char tipc_alphabet[] =
85 "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789_.";
87 /* configurable TIPC parameters */
91 int tipc_max_clusters;
95 int tipc_max_subscriptions;
96 int tipc_max_publications;
98 int tipc_remote_management;
101 int tipc_get_mode(void)
107 * tipc_core_stop_net - shut down TIPC networking sub-systems
110 void tipc_core_stop_net(void)
112 tipc_eth_media_stop();
117 * start_net - start TIPC networking sub-systems
120 int tipc_core_start_net(void)
124 if ((res = tipc_net_start()) ||
125 (res = tipc_eth_media_start())) {
126 tipc_core_stop_net();
132 * tipc_core_stop - switch TIPC from SINGLE NODE to NOT RUNNING mode
135 void tipc_core_stop(void)
137 if (tipc_mode != TIPC_NODE_MODE)
140 tipc_mode = TIPC_NOT_RUNNING;
148 tipc_ref_table_stop();
153 * tipc_core_start - switch TIPC from NOT RUNNING to SINGLE NODE mode
156 int tipc_core_start(void)
160 if (tipc_mode != TIPC_NOT_RUNNING)
163 get_random_bytes(&tipc_random, sizeof(tipc_random));
164 tipc_mode = TIPC_NODE_MODE;
166 if ((res = tipc_handler_start()) ||
167 (res = tipc_ref_table_init(tipc_max_ports, tipc_random)) ||
168 (res = tipc_reg_start()) ||
169 (res = tipc_nametbl_init()) ||
170 (res = tipc_k_signal((Handler)tipc_subscr_start, 0)) ||
171 (res = tipc_k_signal((Handler)tipc_cfg_init, 0)) ||
172 (res = tipc_netlink_start()) ||
173 (res = tipc_socket_init())) {
180 static int __init tipc_init(void)
184 tipc_log_resize(CONFIG_TIPC_LOG);
185 info("Activated (version " TIPC_MOD_VER
186 " compiled " __DATE__ " " __TIME__ ")\n");
189 tipc_remote_management = 1;
190 tipc_max_publications = 10000;
191 tipc_max_subscriptions = 2000;
192 tipc_max_ports = delimit(CONFIG_TIPC_PORTS, 127, 65536);
193 tipc_max_zones = delimit(CONFIG_TIPC_ZONES, 1, 255);
194 tipc_max_clusters = delimit(CONFIG_TIPC_CLUSTERS, 1, 1);
195 tipc_max_nodes = delimit(CONFIG_TIPC_NODES, 8, 2047);
196 tipc_max_slaves = delimit(CONFIG_TIPC_SLAVE_NODES, 0, 2047);
199 if ((res = tipc_core_start()))
200 err("Unable to start in single node mode\n");
202 info("Started in single node mode\n");
206 static void __exit tipc_exit(void)
208 tipc_core_stop_net();
210 info("Deactivated\n");
214 module_init(tipc_init);
215 module_exit(tipc_exit);
217 MODULE_DESCRIPTION("TIPC: Transparent Inter Process Communication");
218 MODULE_LICENSE("Dual BSD/GPL");
219 MODULE_VERSION(TIPC_MOD_VER);
221 /* Native TIPC API for kernel-space applications (see tipc.h) */
223 EXPORT_SYMBOL(tipc_attach);
224 EXPORT_SYMBOL(tipc_detach);
225 EXPORT_SYMBOL(tipc_get_addr);
226 EXPORT_SYMBOL(tipc_get_mode);
227 EXPORT_SYMBOL(tipc_createport);
228 EXPORT_SYMBOL(tipc_deleteport);
229 EXPORT_SYMBOL(tipc_ownidentity);
230 EXPORT_SYMBOL(tipc_portimportance);
231 EXPORT_SYMBOL(tipc_set_portimportance);
232 EXPORT_SYMBOL(tipc_portunreliable);
233 EXPORT_SYMBOL(tipc_set_portunreliable);
234 EXPORT_SYMBOL(tipc_portunreturnable);
235 EXPORT_SYMBOL(tipc_set_portunreturnable);
236 EXPORT_SYMBOL(tipc_publish);
237 EXPORT_SYMBOL(tipc_withdraw);
238 EXPORT_SYMBOL(tipc_connect2port);
239 EXPORT_SYMBOL(tipc_disconnect);
240 EXPORT_SYMBOL(tipc_shutdown);
241 EXPORT_SYMBOL(tipc_isconnected);
242 EXPORT_SYMBOL(tipc_peer);
243 EXPORT_SYMBOL(tipc_ref_valid);
244 EXPORT_SYMBOL(tipc_send);
245 EXPORT_SYMBOL(tipc_send_buf);
246 EXPORT_SYMBOL(tipc_send2name);
247 EXPORT_SYMBOL(tipc_forward2name);
248 EXPORT_SYMBOL(tipc_send_buf2name);
249 EXPORT_SYMBOL(tipc_forward_buf2name);
250 EXPORT_SYMBOL(tipc_send2port);
251 EXPORT_SYMBOL(tipc_forward2port);
252 EXPORT_SYMBOL(tipc_send_buf2port);
253 EXPORT_SYMBOL(tipc_forward_buf2port);
254 EXPORT_SYMBOL(tipc_multicast);
255 /* EXPORT_SYMBOL(tipc_multicast_buf); not available yet */
256 EXPORT_SYMBOL(tipc_ispublished);
257 EXPORT_SYMBOL(tipc_available_nodes);
259 /* TIPC API for external bearers (see tipc_bearer.h) */
261 EXPORT_SYMBOL(tipc_block_bearer);
262 EXPORT_SYMBOL(tipc_continue);
263 EXPORT_SYMBOL(tipc_disable_bearer);
264 EXPORT_SYMBOL(tipc_enable_bearer);
265 EXPORT_SYMBOL(tipc_recv_msg);
266 EXPORT_SYMBOL(tipc_register_media);
268 /* TIPC API for external APIs (see tipc_port.h) */
270 EXPORT_SYMBOL(tipc_createport_raw);
271 EXPORT_SYMBOL(tipc_reject_msg);
272 EXPORT_SYMBOL(tipc_send_buf_fast);
273 EXPORT_SYMBOL(tipc_acknowledge);
274 EXPORT_SYMBOL(tipc_get_port);
275 EXPORT_SYMBOL(tipc_get_handle);