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