2 * net/tipc/core.c: TIPC module code
4 * Copyright (c) 2003-2006, Ericsson AB
5 * Copyright (c) 2005, 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"
51 int tipc_eth_media_start(void);
52 void tipc_eth_media_stop(void);
53 int tipc_handler_start(void);
54 void tipc_handler_stop(void);
55 int tipc_socket_init(void);
56 void tipc_socket_stop(void);
57 int tipc_netlink_start(void);
58 void tipc_netlink_stop(void);
60 #define MOD_NAME "tipc_start: "
62 #ifndef CONFIG_TIPC_ZONES
63 #define CONFIG_TIPC_ZONES 3
66 #ifndef CONFIG_TIPC_CLUSTERS
67 #define CONFIG_TIPC_CLUSTERS 1
70 #ifndef CONFIG_TIPC_NODES
71 #define CONFIG_TIPC_NODES 255
74 #ifndef CONFIG_TIPC_SLAVE_NODES
75 #define CONFIG_TIPC_SLAVE_NODES 0
78 #ifndef CONFIG_TIPC_PORTS
79 #define CONFIG_TIPC_PORTS 8191
82 #ifndef CONFIG_TIPC_LOG
83 #define CONFIG_TIPC_LOG 0
86 /* global variables used by multiple sub-systems within TIPC */
88 int tipc_mode = TIPC_NOT_RUNNING;
90 atomic_t tipc_user_count = ATOMIC_INIT(0);
92 const char tipc_alphabet[] =
93 "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789_";
95 /* configurable TIPC parameters */
99 int tipc_max_clusters;
103 int tipc_max_subscriptions;
104 int tipc_max_publications;
106 int tipc_remote_management;
109 int tipc_get_mode(void)
115 * tipc_core_stop_net - shut down TIPC networking sub-systems
118 void tipc_core_stop_net(void)
120 tipc_eth_media_stop();
125 * start_net - start TIPC networking sub-systems
128 int tipc_core_start_net(void)
132 if ((res = tipc_net_start()) ||
133 (res = tipc_eth_media_start())) {
134 tipc_core_stop_net();
140 * tipc_core_stop - switch TIPC from SINGLE NODE to NOT RUNNING mode
143 void tipc_core_stop(void)
145 if (tipc_mode != TIPC_NODE_MODE)
148 tipc_mode = TIPC_NOT_RUNNING;
156 tipc_ref_table_stop();
161 * tipc_core_start - switch TIPC from NOT RUNNING to SINGLE NODE mode
164 int tipc_core_start(void)
168 if (tipc_mode != TIPC_NOT_RUNNING)
171 get_random_bytes(&tipc_random, sizeof(tipc_random));
172 tipc_mode = TIPC_NODE_MODE;
174 if ((res = tipc_handler_start()) ||
175 (res = tipc_ref_table_init(tipc_max_ports + tipc_max_subscriptions,
177 (res = tipc_reg_start()) ||
178 (res = tipc_nametbl_init()) ||
179 (res = tipc_k_signal((Handler)tipc_subscr_start, 0)) ||
180 (res = tipc_k_signal((Handler)tipc_cfg_init, 0)) ||
181 (res = tipc_netlink_start()) ||
182 (res = tipc_socket_init())) {
189 static int __init tipc_init(void)
193 tipc_log_reinit(CONFIG_TIPC_LOG);
194 info("Activated (compiled " __DATE__ " " __TIME__ ")\n");
197 tipc_remote_management = 1;
198 tipc_max_publications = 10000;
199 tipc_max_subscriptions = 2000;
200 tipc_max_ports = delimit(CONFIG_TIPC_PORTS, 127, 65536);
201 tipc_max_zones = delimit(CONFIG_TIPC_ZONES, 1, 511);
202 tipc_max_clusters = delimit(CONFIG_TIPC_CLUSTERS, 1, 1);
203 tipc_max_nodes = delimit(CONFIG_TIPC_NODES, 8, 2047);
204 tipc_max_slaves = delimit(CONFIG_TIPC_SLAVE_NODES, 0, 2047);
207 if ((res = tipc_core_start()))
208 err("Unable to start in single node mode\n");
210 info("Started in single node mode\n");
214 static void __exit tipc_exit(void)
216 tipc_core_stop_net();
218 info("Deactivated\n");
222 module_init(tipc_init);
223 module_exit(tipc_exit);
225 MODULE_DESCRIPTION("TIPC: Transparent Inter Process Communication");
226 MODULE_LICENSE("Dual BSD/GPL");
228 /* Native TIPC API for kernel-space applications (see tipc.h) */
230 EXPORT_SYMBOL(tipc_attach);
231 EXPORT_SYMBOL(tipc_detach);
232 EXPORT_SYMBOL(tipc_get_addr);
233 EXPORT_SYMBOL(tipc_get_mode);
234 EXPORT_SYMBOL(tipc_createport);
235 EXPORT_SYMBOL(tipc_deleteport);
236 EXPORT_SYMBOL(tipc_ownidentity);
237 EXPORT_SYMBOL(tipc_portimportance);
238 EXPORT_SYMBOL(tipc_set_portimportance);
239 EXPORT_SYMBOL(tipc_portunreliable);
240 EXPORT_SYMBOL(tipc_set_portunreliable);
241 EXPORT_SYMBOL(tipc_portunreturnable);
242 EXPORT_SYMBOL(tipc_set_portunreturnable);
243 EXPORT_SYMBOL(tipc_publish);
244 EXPORT_SYMBOL(tipc_withdraw);
245 EXPORT_SYMBOL(tipc_connect2port);
246 EXPORT_SYMBOL(tipc_disconnect);
247 EXPORT_SYMBOL(tipc_shutdown);
248 EXPORT_SYMBOL(tipc_isconnected);
249 EXPORT_SYMBOL(tipc_peer);
250 EXPORT_SYMBOL(tipc_ref_valid);
251 EXPORT_SYMBOL(tipc_send);
252 EXPORT_SYMBOL(tipc_send_buf);
253 EXPORT_SYMBOL(tipc_send2name);
254 EXPORT_SYMBOL(tipc_forward2name);
255 EXPORT_SYMBOL(tipc_send_buf2name);
256 EXPORT_SYMBOL(tipc_forward_buf2name);
257 EXPORT_SYMBOL(tipc_send2port);
258 EXPORT_SYMBOL(tipc_forward2port);
259 EXPORT_SYMBOL(tipc_send_buf2port);
260 EXPORT_SYMBOL(tipc_forward_buf2port);
261 EXPORT_SYMBOL(tipc_multicast);
262 /* EXPORT_SYMBOL(tipc_multicast_buf); not available yet */
263 EXPORT_SYMBOL(tipc_ispublished);
264 EXPORT_SYMBOL(tipc_available_nodes);
266 /* TIPC API for external bearers (see tipc_bearer.h) */
268 EXPORT_SYMBOL(tipc_block_bearer);
269 EXPORT_SYMBOL(tipc_continue);
270 EXPORT_SYMBOL(tipc_disable_bearer);
271 EXPORT_SYMBOL(tipc_enable_bearer);
272 EXPORT_SYMBOL(tipc_recv_msg);
273 EXPORT_SYMBOL(tipc_register_media);
275 /* TIPC API for external APIs (see tipc_port.h) */
277 EXPORT_SYMBOL(tipc_createport_raw);
278 EXPORT_SYMBOL(tipc_set_msg_option);
279 EXPORT_SYMBOL(tipc_reject_msg);
280 EXPORT_SYMBOL(tipc_send_buf_fast);
281 EXPORT_SYMBOL(tipc_acknowledge);
282 EXPORT_SYMBOL(tipc_get_port);
283 EXPORT_SYMBOL(tipc_get_handle);