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1/*
2 * net/tipc/core.c: TIPC module code
3 *
4 * Copyright (c) 2003-2006, 2013, Ericsson AB
5 * Copyright (c) 2005-2006, 2010-2013, 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#include "core.h"
38#include "name_table.h"
39#include "subscr.h"
40#include "bearer.h"
41#include "net.h"
42#include "socket.h"
43#include "bcast.h"
44#include "node.h"
45
46#include <linux/module.h>
47
48/* configurable TIPC parameters */
49unsigned int tipc_net_id __read_mostly;
50int sysctl_tipc_rmem[3] __read_mostly; /* min/default/max */
51
52static int __net_init tipc_init_net(struct net *net)
53{
54 struct tipc_net *tn = net_generic(net, tipc_net_id);
55 int err;
56
57 tn->net_id = 4711;
58 tn->node_addr = 0;
59 tn->trial_addr = 0;
60 tn->addr_trial_end = 0;
61 tn->capabilities = TIPC_NODE_CAPABILITIES;
62 memset(tn->node_id, 0, sizeof(tn->node_id));
63 memset(tn->node_id_string, 0, sizeof(tn->node_id_string));
64 tn->mon_threshold = TIPC_DEF_MON_THRESHOLD;
65 get_random_bytes(&tn->random, sizeof(int));
66 INIT_LIST_HEAD(&tn->node_list);
67 spin_lock_init(&tn->node_list_lock);
68
69 err = tipc_sk_rht_init(net);
70 if (err)
71 goto out_sk_rht;
72
73 err = tipc_nametbl_init(net);
74 if (err)
75 goto out_nametbl;
76
77 INIT_LIST_HEAD(&tn->dist_queue);
78
79 err = tipc_bcast_init(net);
80 if (err)
81 goto out_bclink;
82
83 err = tipc_attach_loopback(net);
84 if (err)
85 goto out_bclink;
86
87 return 0;
88
89out_bclink:
90 tipc_nametbl_stop(net);
91out_nametbl:
92 tipc_sk_rht_destroy(net);
93out_sk_rht:
94 return err;
95}
96
97static void __net_exit tipc_exit_net(struct net *net)
98{
99 tipc_detach_loopback(net);
100 tipc_net_stop(net);
101 tipc_bcast_stop(net);
102 tipc_nametbl_stop(net);
103 tipc_sk_rht_destroy(net);
104}
105
106static struct pernet_operations tipc_net_ops = {
107 .init = tipc_init_net,
108 .exit = tipc_exit_net,
109 .id = &tipc_net_id,
110 .size = sizeof(struct tipc_net),
111};
112
113static struct pernet_operations tipc_topsrv_net_ops = {
114 .init = tipc_topsrv_init_net,
115 .exit = tipc_topsrv_exit_net,
116};
117
118static int __init tipc_init(void)
119{
120 int err;
121
122 pr_info("Activated (version " TIPC_MOD_VER ")\n");
123
124 sysctl_tipc_rmem[0] = RCVBUF_MIN;
125 sysctl_tipc_rmem[1] = RCVBUF_DEF;
126 sysctl_tipc_rmem[2] = RCVBUF_MAX;
127
128 err = tipc_netlink_start();
129 if (err)
130 goto out_netlink;
131
132 err = tipc_netlink_compat_start();
133 if (err)
134 goto out_netlink_compat;
135
136 err = tipc_register_sysctl();
137 if (err)
138 goto out_sysctl;
139
140 err = register_pernet_device(&tipc_net_ops);
141 if (err)
142 goto out_pernet;
143
144 err = tipc_socket_init();
145 if (err)
146 goto out_socket;
147
148 err = register_pernet_device(&tipc_topsrv_net_ops);
149 if (err)
150 goto out_pernet_topsrv;
151
152 err = tipc_bearer_setup();
153 if (err)
154 goto out_bearer;
155
156 pr_info("Started in single node mode\n");
157 return 0;
158out_bearer:
159 unregister_pernet_device(&tipc_topsrv_net_ops);
160out_pernet_topsrv:
161 tipc_socket_stop();
162out_socket:
163 unregister_pernet_device(&tipc_net_ops);
164out_pernet:
165 tipc_unregister_sysctl();
166out_sysctl:
167 tipc_netlink_compat_stop();
168out_netlink_compat:
169 tipc_netlink_stop();
170out_netlink:
171 pr_err("Unable to start in single node mode\n");
172 return err;
173}
174
175static void __exit tipc_exit(void)
176{
177 tipc_bearer_cleanup();
178 unregister_pernet_device(&tipc_topsrv_net_ops);
179 tipc_socket_stop();
180 unregister_pernet_device(&tipc_net_ops);
181 tipc_netlink_stop();
182 tipc_netlink_compat_stop();
183 tipc_unregister_sysctl();
184
185 pr_info("Deactivated\n");
186}
187
188module_init(tipc_init);
189module_exit(tipc_exit);
190
191MODULE_DESCRIPTION("TIPC: Transparent Inter Process Communication");
192MODULE_LICENSE("Dual BSD/GPL");
193MODULE_VERSION(TIPC_MOD_VER);
1/*
2 * net/tipc/core.c: TIPC module code
3 *
4 * Copyright (c) 2003-2006, 2013, Ericsson AB
5 * Copyright (c) 2005-2006, 2010-2013, 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#include "core.h"
38#include "name_table.h"
39#include "subscr.h"
40#include "bearer.h"
41#include "net.h"
42#include "socket.h"
43#include "bcast.h"
44#include "node.h"
45#include "crypto.h"
46
47#include <linux/module.h>
48
49/* configurable TIPC parameters */
50unsigned int tipc_net_id __read_mostly;
51int sysctl_tipc_rmem[3] __read_mostly; /* min/default/max */
52
53static int __net_init tipc_init_net(struct net *net)
54{
55 struct tipc_net *tn = net_generic(net, tipc_net_id);
56 int err;
57
58 tn->net_id = 4711;
59 tn->node_addr = 0;
60 tn->trial_addr = 0;
61 tn->addr_trial_end = 0;
62 tn->capabilities = TIPC_NODE_CAPABILITIES;
63 INIT_WORK(&tn->work, tipc_net_finalize_work);
64 memset(tn->node_id, 0, sizeof(tn->node_id));
65 memset(tn->node_id_string, 0, sizeof(tn->node_id_string));
66 tn->mon_threshold = TIPC_DEF_MON_THRESHOLD;
67 get_random_bytes(&tn->random, sizeof(int));
68 INIT_LIST_HEAD(&tn->node_list);
69 spin_lock_init(&tn->node_list_lock);
70
71#ifdef CONFIG_TIPC_CRYPTO
72 err = tipc_crypto_start(&tn->crypto_tx, net, NULL);
73 if (err)
74 goto out_crypto;
75#endif
76 err = tipc_sk_rht_init(net);
77 if (err)
78 goto out_sk_rht;
79
80 err = tipc_nametbl_init(net);
81 if (err)
82 goto out_nametbl;
83
84 err = tipc_bcast_init(net);
85 if (err)
86 goto out_bclink;
87
88 err = tipc_attach_loopback(net);
89 if (err)
90 goto out_bclink;
91
92 return 0;
93
94out_bclink:
95 tipc_nametbl_stop(net);
96out_nametbl:
97 tipc_sk_rht_destroy(net);
98out_sk_rht:
99
100#ifdef CONFIG_TIPC_CRYPTO
101 tipc_crypto_stop(&tn->crypto_tx);
102out_crypto:
103#endif
104 return err;
105}
106
107static void __net_exit tipc_exit_net(struct net *net)
108{
109 struct tipc_net *tn = tipc_net(net);
110
111 tipc_detach_loopback(net);
112 /* Make sure the tipc_net_finalize_work() finished */
113 cancel_work_sync(&tn->work);
114 tipc_net_stop(net);
115
116 tipc_bcast_stop(net);
117 tipc_nametbl_stop(net);
118 tipc_sk_rht_destroy(net);
119#ifdef CONFIG_TIPC_CRYPTO
120 tipc_crypto_stop(&tipc_net(net)->crypto_tx);
121#endif
122 while (atomic_read(&tn->wq_count))
123 cond_resched();
124}
125
126static void __net_exit tipc_pernet_pre_exit(struct net *net)
127{
128 tipc_node_pre_cleanup_net(net);
129}
130
131static struct pernet_operations tipc_pernet_pre_exit_ops = {
132 .pre_exit = tipc_pernet_pre_exit,
133};
134
135static struct pernet_operations tipc_net_ops = {
136 .init = tipc_init_net,
137 .exit = tipc_exit_net,
138 .id = &tipc_net_id,
139 .size = sizeof(struct tipc_net),
140};
141
142static struct pernet_operations tipc_topsrv_net_ops = {
143 .init = tipc_topsrv_init_net,
144 .exit = tipc_topsrv_exit_net,
145};
146
147static int __init tipc_init(void)
148{
149 int err;
150
151 pr_info("Activated (version " TIPC_MOD_VER ")\n");
152
153 sysctl_tipc_rmem[0] = RCVBUF_MIN;
154 sysctl_tipc_rmem[1] = RCVBUF_DEF;
155 sysctl_tipc_rmem[2] = RCVBUF_MAX;
156
157 err = tipc_register_sysctl();
158 if (err)
159 goto out_sysctl;
160
161 err = register_pernet_device(&tipc_net_ops);
162 if (err)
163 goto out_pernet;
164
165 err = tipc_socket_init();
166 if (err)
167 goto out_socket;
168
169 err = register_pernet_device(&tipc_topsrv_net_ops);
170 if (err)
171 goto out_pernet_topsrv;
172
173 err = register_pernet_subsys(&tipc_pernet_pre_exit_ops);
174 if (err)
175 goto out_register_pernet_subsys;
176
177 err = tipc_bearer_setup();
178 if (err)
179 goto out_bearer;
180
181 err = tipc_netlink_start();
182 if (err)
183 goto out_netlink;
184
185 err = tipc_netlink_compat_start();
186 if (err)
187 goto out_netlink_compat;
188
189 pr_info("Started in single node mode\n");
190 return 0;
191
192out_netlink_compat:
193 tipc_netlink_stop();
194out_netlink:
195 tipc_bearer_cleanup();
196out_bearer:
197 unregister_pernet_subsys(&tipc_pernet_pre_exit_ops);
198out_register_pernet_subsys:
199 unregister_pernet_device(&tipc_topsrv_net_ops);
200out_pernet_topsrv:
201 tipc_socket_stop();
202out_socket:
203 unregister_pernet_device(&tipc_net_ops);
204out_pernet:
205 tipc_unregister_sysctl();
206out_sysctl:
207 pr_err("Unable to start in single node mode\n");
208 return err;
209}
210
211static void __exit tipc_exit(void)
212{
213 tipc_netlink_compat_stop();
214 tipc_netlink_stop();
215 tipc_bearer_cleanup();
216 unregister_pernet_subsys(&tipc_pernet_pre_exit_ops);
217 unregister_pernet_device(&tipc_topsrv_net_ops);
218 tipc_socket_stop();
219 unregister_pernet_device(&tipc_net_ops);
220 tipc_unregister_sysctl();
221
222 pr_info("Deactivated\n");
223}
224
225module_init(tipc_init);
226module_exit(tipc_exit);
227
228MODULE_DESCRIPTION("TIPC: Transparent Inter Process Communication");
229MODULE_LICENSE("Dual BSD/GPL");
230MODULE_VERSION(TIPC_MOD_VER);