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Per Lidenb97bf3f2006-01-02 19:04:38 +01001/*
2 * net/tipc/core.c: TIPC module code
3 *
Ying Xuec61dd612014-02-13 17:29:09 -05004 * Copyright (c) 2003-2006, 2013, Ericsson AB
Ying Xue13a2e892013-06-17 10:54:40 -04005 * Copyright (c) 2005-2006, 2010-2013, 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
Ying Xue07f6c4b2015-01-07 13:41:58 +080037#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
38
Per Lidenb97bf3f2006-01-02 19:04:38 +010039#include "core.h"
Per Lidenb97bf3f2006-01-02 19:04:38 +010040#include "name_table.h"
41#include "subscr.h"
Richard Alpe22ae7cf2015-02-09 09:50:18 +010042#include "bearer.h"
43#include "net.h"
Jon Paul Maloy2e84c602014-08-22 18:09:18 -040044#include "socket.h"
Jon Paul Maloy5fd9fd62015-10-22 08:51:35 -040045#include "bcast.h"
Per Lidenb97bf3f2006-01-02 19:04:38 +010046
Erik Hugne2cf8aa12012-06-29 00:16:37 -040047#include <linux/module.h>
Per Lidenb97bf3f2006-01-02 19:04:38 +010048
Per Lidenb97bf3f2006-01-02 19:04:38 +010049/* configurable TIPC parameters */
Alexey Dobriyanc7d03a02016-11-17 04:58:21 +030050unsigned int tipc_net_id __read_mostly;
Ying Xuecc79dd12013-06-17 10:54:37 -040051int sysctl_tipc_rmem[3] __read_mostly; /* min/default/max */
Per Lidenb97bf3f2006-01-02 19:04:38 +010052
Ying Xuec93d3ba2015-01-09 15:27:04 +080053static int __net_init tipc_init_net(struct net *net)
54{
55 struct tipc_net *tn = net_generic(net, tipc_net_id);
Ying Xuee05b31f2015-01-09 15:27:08 +080056 int err;
Ying Xuec93d3ba2015-01-09 15:27:04 +080057
58 tn->net_id = 4711;
Ying Xue34747532015-01-09 15:27:10 +080059 tn->own_addr = 0;
Jon Paul Maloy35c55c92016-06-13 20:46:22 -040060 tn->mon_threshold = TIPC_DEF_MON_THRESHOLD;
Ying Xuebafa29e2015-01-09 15:27:12 +080061 get_random_bytes(&tn->random, sizeof(int));
Ying Xuef2f98002015-01-09 15:27:05 +080062 INIT_LIST_HEAD(&tn->node_list);
63 spin_lock_init(&tn->node_list_lock);
Ying Xuec93d3ba2015-01-09 15:27:04 +080064
Ying Xuee05b31f2015-01-09 15:27:08 +080065 err = tipc_sk_rht_init(net);
Ying Xue4ac1c8d2015-01-09 15:27:09 +080066 if (err)
67 goto out_sk_rht;
68
69 err = tipc_nametbl_init(net);
70 if (err)
71 goto out_nametbl;
Ying Xuea62fbcc2015-01-09 15:27:11 +080072
Erik Hugne541726a2016-04-07 10:40:43 -040073 INIT_LIST_HEAD(&tn->dist_queue);
Ying Xue57f1d182015-05-04 10:36:44 +080074 err = tipc_topsrv_start(net);
Ying Xuea62fbcc2015-01-09 15:27:11 +080075 if (err)
76 goto out_subscr;
Jon Paul Maloy5fd9fd62015-10-22 08:51:35 -040077
78 err = tipc_bcast_init(net);
79 if (err)
80 goto out_bclink;
81
Ying Xue4ac1c8d2015-01-09 15:27:09 +080082 return 0;
83
Jon Paul Maloy5fd9fd62015-10-22 08:51:35 -040084out_bclink:
85 tipc_bcast_stop(net);
Ying Xuea62fbcc2015-01-09 15:27:11 +080086out_subscr:
87 tipc_nametbl_stop(net);
Ying Xue4ac1c8d2015-01-09 15:27:09 +080088out_nametbl:
89 tipc_sk_rht_destroy(net);
90out_sk_rht:
Ying Xuee05b31f2015-01-09 15:27:08 +080091 return err;
Ying Xuec93d3ba2015-01-09 15:27:04 +080092}
93
94static void __net_exit tipc_exit_net(struct net *net)
95{
Ying Xue57f1d182015-05-04 10:36:44 +080096 tipc_topsrv_stop(net);
Ying Xuef2f98002015-01-09 15:27:05 +080097 tipc_net_stop(net);
Jon Paul Maloy5fd9fd62015-10-22 08:51:35 -040098 tipc_bcast_stop(net);
Ying Xue4ac1c8d2015-01-09 15:27:09 +080099 tipc_nametbl_stop(net);
Ying Xuee05b31f2015-01-09 15:27:08 +0800100 tipc_sk_rht_destroy(net);
Ying Xuec93d3ba2015-01-09 15:27:04 +0800101}
102
103static struct pernet_operations tipc_net_ops = {
104 .init = tipc_init_net,
105 .exit = tipc_exit_net,
106 .id = &tipc_net_id,
107 .size = sizeof(struct tipc_net),
108};
109
Ying Xue6b8326e2015-01-09 15:26:59 +0800110static int __init tipc_init(void)
Per Lidenb97bf3f2006-01-02 19:04:38 +0100111{
Ying Xue9fe7ed42014-02-20 11:32:49 +0800112 int err;
Per Lidenb97bf3f2006-01-02 19:04:38 +0100113
Ying Xue6b8326e2015-01-09 15:26:59 +0800114 pr_info("Activated (version " TIPC_MOD_VER ")\n");
115
Jon Paul Maloy10724cc2016-05-02 11:58:47 -0400116 sysctl_tipc_rmem[0] = RCVBUF_MIN;
117 sysctl_tipc_rmem[1] = RCVBUF_DEF;
118 sysctl_tipc_rmem[2] = RCVBUF_MAX;
Ying Xue6b8326e2015-01-09 15:26:59 +0800119
Ying Xue9fe7ed42014-02-20 11:32:49 +0800120 err = tipc_netlink_start();
121 if (err)
122 goto out_netlink;
123
Richard Alpebfb3e5d2015-02-09 09:50:03 +0100124 err = tipc_netlink_compat_start();
125 if (err)
126 goto out_netlink_compat;
127
Ying Xue9fe7ed42014-02-20 11:32:49 +0800128 err = tipc_socket_init();
129 if (err)
130 goto out_socket;
131
132 err = tipc_register_sysctl();
133 if (err)
134 goto out_sysctl;
135
Ying Xuea62fbcc2015-01-09 15:27:11 +0800136 err = register_pernet_subsys(&tipc_net_ops);
Ying Xue9fe7ed42014-02-20 11:32:49 +0800137 if (err)
Ying Xuea62fbcc2015-01-09 15:27:11 +0800138 goto out_pernet;
Ying Xue9fe7ed42014-02-20 11:32:49 +0800139
Ying Xue970122f2014-02-20 11:32:50 +0800140 err = tipc_bearer_setup();
141 if (err)
142 goto out_bearer;
143
Ying Xue6b8326e2015-01-09 15:26:59 +0800144 pr_info("Started in single node mode\n");
Ying Xue9fe7ed42014-02-20 11:32:49 +0800145 return 0;
Ying Xue970122f2014-02-20 11:32:50 +0800146out_bearer:
Ying Xuea62fbcc2015-01-09 15:27:11 +0800147 unregister_pernet_subsys(&tipc_net_ops);
148out_pernet:
Ying Xue9fe7ed42014-02-20 11:32:49 +0800149 tipc_unregister_sysctl();
150out_sysctl:
151 tipc_socket_stop();
152out_socket:
Richard Alpebfb3e5d2015-02-09 09:50:03 +0100153 tipc_netlink_compat_stop();
154out_netlink_compat:
Ying Xue9fe7ed42014-02-20 11:32:49 +0800155 tipc_netlink_stop();
156out_netlink:
Ying Xue6b8326e2015-01-09 15:26:59 +0800157 pr_err("Unable to start in single node mode\n");
Ying Xue9fe7ed42014-02-20 11:32:49 +0800158 return err;
Per Lidenb97bf3f2006-01-02 19:04:38 +0100159}
160
Per Lidenb97bf3f2006-01-02 19:04:38 +0100161static void __exit tipc_exit(void)
162{
Ying Xue6b8326e2015-01-09 15:26:59 +0800163 tipc_bearer_cleanup();
Ying Xue7e436902015-04-01 09:42:50 +0800164 unregister_pernet_subsys(&tipc_net_ops);
Ying Xue6b8326e2015-01-09 15:26:59 +0800165 tipc_netlink_stop();
Richard Alpebfb3e5d2015-02-09 09:50:03 +0100166 tipc_netlink_compat_stop();
Ying Xue6b8326e2015-01-09 15:26:59 +0800167 tipc_socket_stop();
168 tipc_unregister_sysctl();
Ying Xue6b8326e2015-01-09 15:26:59 +0800169
Erik Hugne2cf8aa12012-06-29 00:16:37 -0400170 pr_info("Deactivated\n");
Per Lidenb97bf3f2006-01-02 19:04:38 +0100171}
172
173module_init(tipc_init);
174module_exit(tipc_exit);
175
176MODULE_DESCRIPTION("TIPC: Transparent Inter Process Communication");
177MODULE_LICENSE("Dual BSD/GPL");
Allan Stephensa592ea62006-06-25 23:42:47 -0700178MODULE_VERSION(TIPC_MOD_VER);