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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
Per Lidenb97bf3f2006-01-02 19:04:38 +01005 * Copyright (c) 2005, 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 Liden4323add2006-01-18 00:38:21 +010051int tipc_eth_media_start(void);
52void tipc_eth_media_stop(void);
53int tipc_handler_start(void);
54void tipc_handler_stop(void);
55int tipc_socket_init(void);
56void tipc_socket_stop(void);
57int tipc_netlink_start(void);
58void tipc_netlink_stop(void);
Per Lidenb97bf3f2006-01-02 19:04:38 +010059
60#define MOD_NAME "tipc_start: "
61
62#ifndef CONFIG_TIPC_ZONES
63#define CONFIG_TIPC_ZONES 3
64#endif
65
66#ifndef CONFIG_TIPC_CLUSTERS
67#define CONFIG_TIPC_CLUSTERS 1
68#endif
69
70#ifndef CONFIG_TIPC_NODES
71#define CONFIG_TIPC_NODES 255
72#endif
73
74#ifndef CONFIG_TIPC_SLAVE_NODES
75#define CONFIG_TIPC_SLAVE_NODES 0
76#endif
77
78#ifndef CONFIG_TIPC_PORTS
79#define CONFIG_TIPC_PORTS 8191
80#endif
81
82#ifndef CONFIG_TIPC_LOG
83#define CONFIG_TIPC_LOG 0
84#endif
85
86/* global variables used by multiple sub-systems within TIPC */
87
88int tipc_mode = TIPC_NOT_RUNNING;
89int tipc_random;
90atomic_t tipc_user_count = ATOMIC_INIT(0);
91
92const char tipc_alphabet[] =
93 "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789_";
94
95/* configurable TIPC parameters */
96
97u32 tipc_own_addr;
98int tipc_max_zones;
99int tipc_max_clusters;
100int tipc_max_nodes;
101int tipc_max_slaves;
102int tipc_max_ports;
103int tipc_max_subscriptions;
104int tipc_max_publications;
105int tipc_net_id;
106int tipc_remote_management;
107
108
109int tipc_get_mode(void)
110{
111 return tipc_mode;
112}
113
114/**
Per Liden4323add2006-01-18 00:38:21 +0100115 * tipc_core_stop_net - shut down TIPC networking sub-systems
Per Lidenb97bf3f2006-01-02 19:04:38 +0100116 */
117
Per Liden4323add2006-01-18 00:38:21 +0100118void tipc_core_stop_net(void)
Per Lidenb97bf3f2006-01-02 19:04:38 +0100119{
Per Liden4323add2006-01-18 00:38:21 +0100120 tipc_eth_media_stop();
121 tipc_net_stop();
Per Lidenb97bf3f2006-01-02 19:04:38 +0100122}
123
124/**
125 * start_net - start TIPC networking sub-systems
126 */
127
Per Liden4323add2006-01-18 00:38:21 +0100128int tipc_core_start_net(void)
Per Lidenb97bf3f2006-01-02 19:04:38 +0100129{
130 int res;
131
Per Liden4323add2006-01-18 00:38:21 +0100132 if ((res = tipc_net_start()) ||
133 (res = tipc_eth_media_start())) {
134 tipc_core_stop_net();
Per Lidenb97bf3f2006-01-02 19:04:38 +0100135 }
136 return res;
137}
138
139/**
Per Liden4323add2006-01-18 00:38:21 +0100140 * tipc_core_stop - switch TIPC from SINGLE NODE to NOT RUNNING mode
Per Lidenb97bf3f2006-01-02 19:04:38 +0100141 */
142
Per Liden4323add2006-01-18 00:38:21 +0100143void tipc_core_stop(void)
Per Lidenb97bf3f2006-01-02 19:04:38 +0100144{
145 if (tipc_mode != TIPC_NODE_MODE)
146 return;
147
148 tipc_mode = TIPC_NOT_RUNNING;
149
Per Liden4323add2006-01-18 00:38:21 +0100150 tipc_netlink_stop();
151 tipc_handler_stop();
152 tipc_cfg_stop();
153 tipc_subscr_stop();
154 tipc_reg_stop();
155 tipc_nametbl_stop();
156 tipc_ref_table_stop();
157 tipc_socket_stop();
Per Lidenb97bf3f2006-01-02 19:04:38 +0100158}
159
160/**
Per Liden4323add2006-01-18 00:38:21 +0100161 * tipc_core_start - switch TIPC from NOT RUNNING to SINGLE NODE mode
Per Lidenb97bf3f2006-01-02 19:04:38 +0100162 */
163
Per Liden4323add2006-01-18 00:38:21 +0100164int tipc_core_start(void)
Per Lidenb97bf3f2006-01-02 19:04:38 +0100165{
166 int res;
167
168 if (tipc_mode != TIPC_NOT_RUNNING)
169 return -ENOPROTOOPT;
170
171 get_random_bytes(&tipc_random, sizeof(tipc_random));
172 tipc_mode = TIPC_NODE_MODE;
173
Per Liden4323add2006-01-18 00:38:21 +0100174 if ((res = tipc_handler_start()) ||
175 (res = tipc_ref_table_init(tipc_max_ports + tipc_max_subscriptions,
176 tipc_random)) ||
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())) {
183 tipc_core_stop();
Per Lidenb97bf3f2006-01-02 19:04:38 +0100184 }
185 return res;
186}
187
188
189static int __init tipc_init(void)
190{
191 int res;
192
Per Liden4323add2006-01-18 00:38:21 +0100193 tipc_log_reinit(CONFIG_TIPC_LOG);
Per Lidenb97bf3f2006-01-02 19:04:38 +0100194 info("Activated (compiled " __DATE__ " " __TIME__ ")\n");
195
196 tipc_own_addr = 0;
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);
205 tipc_net_id = 4711;
206
Per Liden4323add2006-01-18 00:38:21 +0100207 if ((res = tipc_core_start()))
Per Lidenb97bf3f2006-01-02 19:04:38 +0100208 err("Unable to start in single node mode\n");
209 else
210 info("Started in single node mode\n");
211 return res;
212}
213
214static void __exit tipc_exit(void)
215{
Per Liden4323add2006-01-18 00:38:21 +0100216 tipc_core_stop_net();
217 tipc_core_stop();
Per Lidenb97bf3f2006-01-02 19:04:38 +0100218 info("Deactivated\n");
Per Liden4323add2006-01-18 00:38:21 +0100219 tipc_log_stop();
Per Lidenb97bf3f2006-01-02 19:04:38 +0100220}
221
222module_init(tipc_init);
223module_exit(tipc_exit);
224
225MODULE_DESCRIPTION("TIPC: Transparent Inter Process Communication");
226MODULE_LICENSE("Dual BSD/GPL");
227
228/* Native TIPC API for kernel-space applications (see tipc.h) */
229
230EXPORT_SYMBOL(tipc_attach);
231EXPORT_SYMBOL(tipc_detach);
232EXPORT_SYMBOL(tipc_get_addr);
233EXPORT_SYMBOL(tipc_get_mode);
234EXPORT_SYMBOL(tipc_createport);
235EXPORT_SYMBOL(tipc_deleteport);
236EXPORT_SYMBOL(tipc_ownidentity);
237EXPORT_SYMBOL(tipc_portimportance);
238EXPORT_SYMBOL(tipc_set_portimportance);
239EXPORT_SYMBOL(tipc_portunreliable);
240EXPORT_SYMBOL(tipc_set_portunreliable);
241EXPORT_SYMBOL(tipc_portunreturnable);
242EXPORT_SYMBOL(tipc_set_portunreturnable);
243EXPORT_SYMBOL(tipc_publish);
244EXPORT_SYMBOL(tipc_withdraw);
245EXPORT_SYMBOL(tipc_connect2port);
246EXPORT_SYMBOL(tipc_disconnect);
247EXPORT_SYMBOL(tipc_shutdown);
248EXPORT_SYMBOL(tipc_isconnected);
249EXPORT_SYMBOL(tipc_peer);
250EXPORT_SYMBOL(tipc_ref_valid);
251EXPORT_SYMBOL(tipc_send);
252EXPORT_SYMBOL(tipc_send_buf);
253EXPORT_SYMBOL(tipc_send2name);
254EXPORT_SYMBOL(tipc_forward2name);
255EXPORT_SYMBOL(tipc_send_buf2name);
256EXPORT_SYMBOL(tipc_forward_buf2name);
257EXPORT_SYMBOL(tipc_send2port);
258EXPORT_SYMBOL(tipc_forward2port);
259EXPORT_SYMBOL(tipc_send_buf2port);
260EXPORT_SYMBOL(tipc_forward_buf2port);
261EXPORT_SYMBOL(tipc_multicast);
262/* EXPORT_SYMBOL(tipc_multicast_buf); not available yet */
263EXPORT_SYMBOL(tipc_ispublished);
264EXPORT_SYMBOL(tipc_available_nodes);
265
266/* TIPC API for external bearers (see tipc_bearer.h) */
267
268EXPORT_SYMBOL(tipc_block_bearer);
269EXPORT_SYMBOL(tipc_continue);
270EXPORT_SYMBOL(tipc_disable_bearer);
271EXPORT_SYMBOL(tipc_enable_bearer);
272EXPORT_SYMBOL(tipc_recv_msg);
273EXPORT_SYMBOL(tipc_register_media);
274
275/* TIPC API for external APIs (see tipc_port.h) */
276
277EXPORT_SYMBOL(tipc_createport_raw);
278EXPORT_SYMBOL(tipc_set_msg_option);
279EXPORT_SYMBOL(tipc_reject_msg);
280EXPORT_SYMBOL(tipc_send_buf_fast);
281EXPORT_SYMBOL(tipc_acknowledge);
282EXPORT_SYMBOL(tipc_get_port);
283EXPORT_SYMBOL(tipc_get_handle);
284