Commit | Line | Data |
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b97bf3fd PL |
1 | /* |
2 | * net/tipc/core.c: TIPC module code | |
3 | * | |
c61dd61d | 4 | * Copyright (c) 2003-2006, 2013, Ericsson AB |
13a2e898 | 5 | * Copyright (c) 2005-2006, 2010-2013, Wind River Systems |
b97bf3fd PL |
6 | * All rights reserved. |
7 | * | |
9ea1fd3c | 8 | * Redistribution and use in source and binary forms, with or without |
b97bf3fd PL |
9 | * modification, are permitted provided that the following conditions are met: |
10 | * | |
9ea1fd3c PL |
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. | |
b97bf3fd | 19 | * |
9ea1fd3c PL |
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 | |
b97bf3fd PL |
34 | * POSSIBILITY OF SUCH DAMAGE. |
35 | */ | |
36 | ||
07f6c4bc YX |
37 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
38 | ||
b97bf3fd | 39 | #include "core.h" |
b97bf3fd PL |
40 | #include "name_table.h" |
41 | #include "subscr.h" | |
22ae7cff RA |
42 | #include "bearer.h" |
43 | #include "net.h" | |
2e84c60b | 44 | #include "socket.h" |
b97bf3fd | 45 | |
2cf8aa19 | 46 | #include <linux/module.h> |
b97bf3fd | 47 | |
b97bf3fd | 48 | /* configurable TIPC parameters */ |
61cdd4d8 | 49 | int tipc_net_id __read_mostly; |
cc79dd1b | 50 | int sysctl_tipc_rmem[3] __read_mostly; /* min/default/max */ |
b97bf3fd | 51 | |
c93d3baa YX |
52 | static int __net_init tipc_init_net(struct net *net) |
53 | { | |
54 | struct tipc_net *tn = net_generic(net, tipc_net_id); | |
e05b31f4 | 55 | int err; |
c93d3baa YX |
56 | |
57 | tn->net_id = 4711; | |
34747539 | 58 | tn->own_addr = 0; |
bafa29e3 | 59 | get_random_bytes(&tn->random, sizeof(int)); |
f2f9800d YX |
60 | INIT_LIST_HEAD(&tn->node_list); |
61 | spin_lock_init(&tn->node_list_lock); | |
c93d3baa | 62 | |
e05b31f4 | 63 | err = tipc_sk_rht_init(net); |
4ac1c8d0 YX |
64 | if (err) |
65 | goto out_sk_rht; | |
66 | ||
67 | err = tipc_nametbl_init(net); | |
68 | if (err) | |
69 | goto out_nametbl; | |
a62fbcce YX |
70 | |
71 | err = tipc_subscr_start(net); | |
72 | if (err) | |
73 | goto out_subscr; | |
4ac1c8d0 YX |
74 | return 0; |
75 | ||
a62fbcce YX |
76 | out_subscr: |
77 | tipc_nametbl_stop(net); | |
4ac1c8d0 YX |
78 | out_nametbl: |
79 | tipc_sk_rht_destroy(net); | |
80 | out_sk_rht: | |
e05b31f4 | 81 | return err; |
c93d3baa YX |
82 | } |
83 | ||
84 | static void __net_exit tipc_exit_net(struct net *net) | |
85 | { | |
a62fbcce | 86 | tipc_subscr_stop(net); |
f2f9800d | 87 | tipc_net_stop(net); |
4ac1c8d0 | 88 | tipc_nametbl_stop(net); |
e05b31f4 | 89 | tipc_sk_rht_destroy(net); |
c93d3baa YX |
90 | } |
91 | ||
92 | static struct pernet_operations tipc_net_ops = { | |
93 | .init = tipc_init_net, | |
94 | .exit = tipc_exit_net, | |
95 | .id = &tipc_net_id, | |
96 | .size = sizeof(struct tipc_net), | |
97 | }; | |
98 | ||
6b8326ed | 99 | static int __init tipc_init(void) |
b97bf3fd | 100 | { |
9fe7ed47 | 101 | int err; |
b97bf3fd | 102 | |
6b8326ed YX |
103 | pr_info("Activated (version " TIPC_MOD_VER ")\n"); |
104 | ||
6b8326ed YX |
105 | sysctl_tipc_rmem[0] = TIPC_CONN_OVERLOAD_LIMIT >> 4 << |
106 | TIPC_LOW_IMPORTANCE; | |
107 | sysctl_tipc_rmem[1] = TIPC_CONN_OVERLOAD_LIMIT >> 4 << | |
108 | TIPC_CRITICAL_IMPORTANCE; | |
109 | sysctl_tipc_rmem[2] = TIPC_CONN_OVERLOAD_LIMIT; | |
110 | ||
9fe7ed47 YX |
111 | err = tipc_netlink_start(); |
112 | if (err) | |
113 | goto out_netlink; | |
114 | ||
bfb3e5dd RA |
115 | err = tipc_netlink_compat_start(); |
116 | if (err) | |
117 | goto out_netlink_compat; | |
118 | ||
9fe7ed47 YX |
119 | err = tipc_socket_init(); |
120 | if (err) | |
121 | goto out_socket; | |
122 | ||
123 | err = tipc_register_sysctl(); | |
124 | if (err) | |
125 | goto out_sysctl; | |
126 | ||
a62fbcce | 127 | err = register_pernet_subsys(&tipc_net_ops); |
9fe7ed47 | 128 | if (err) |
a62fbcce | 129 | goto out_pernet; |
9fe7ed47 | 130 | |
970122fd YX |
131 | err = tipc_bearer_setup(); |
132 | if (err) | |
133 | goto out_bearer; | |
134 | ||
6b8326ed | 135 | pr_info("Started in single node mode\n"); |
9fe7ed47 | 136 | return 0; |
970122fd | 137 | out_bearer: |
a62fbcce YX |
138 | unregister_pernet_subsys(&tipc_net_ops); |
139 | out_pernet: | |
9fe7ed47 YX |
140 | tipc_unregister_sysctl(); |
141 | out_sysctl: | |
142 | tipc_socket_stop(); | |
143 | out_socket: | |
bfb3e5dd RA |
144 | tipc_netlink_compat_stop(); |
145 | out_netlink_compat: | |
9fe7ed47 YX |
146 | tipc_netlink_stop(); |
147 | out_netlink: | |
6b8326ed | 148 | pr_err("Unable to start in single node mode\n"); |
9fe7ed47 | 149 | return err; |
b97bf3fd PL |
150 | } |
151 | ||
b97bf3fd PL |
152 | static void __exit tipc_exit(void) |
153 | { | |
6b8326ed YX |
154 | tipc_bearer_cleanup(); |
155 | tipc_netlink_stop(); | |
bfb3e5dd | 156 | tipc_netlink_compat_stop(); |
6b8326ed YX |
157 | tipc_socket_stop(); |
158 | tipc_unregister_sysctl(); | |
a62fbcce | 159 | unregister_pernet_subsys(&tipc_net_ops); |
6b8326ed | 160 | |
2cf8aa19 | 161 | pr_info("Deactivated\n"); |
b97bf3fd PL |
162 | } |
163 | ||
164 | module_init(tipc_init); | |
165 | module_exit(tipc_exit); | |
166 | ||
167 | MODULE_DESCRIPTION("TIPC: Transparent Inter Process Communication"); | |
168 | MODULE_LICENSE("Dual BSD/GPL"); | |
a592ea63 | 169 | MODULE_VERSION(TIPC_MOD_VER); |