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#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 */
 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->own_addr = 0;
 
 
 
 
 
 60	tn->mon_threshold = TIPC_DEF_MON_THRESHOLD;
 61	get_random_bytes(&tn->random, sizeof(int));
 62	INIT_LIST_HEAD(&tn->node_list);
 63	spin_lock_init(&tn->node_list_lock);
 64
 65	err = tipc_sk_rht_init(net);
 66	if (err)
 67		goto out_sk_rht;
 68
 69	err = tipc_nametbl_init(net);
 70	if (err)
 71		goto out_nametbl;
 72
 73	INIT_LIST_HEAD(&tn->dist_queue);
 74	err = tipc_topsrv_start(net);
 
 75	if (err)
 76		goto out_subscr;
 77
 78	err = tipc_bcast_init(net);
 79	if (err)
 80		goto out_bclink;
 81
 82	return 0;
 83
 84out_bclink:
 85	tipc_bcast_stop(net);
 86out_subscr:
 87	tipc_nametbl_stop(net);
 88out_nametbl:
 89	tipc_sk_rht_destroy(net);
 90out_sk_rht:
 91	return err;
 92}
 93
 94static void __net_exit tipc_exit_net(struct net *net)
 95{
 96	tipc_topsrv_stop(net);
 97	tipc_net_stop(net);
 98	tipc_bcast_stop(net);
 99	tipc_nametbl_stop(net);
100	tipc_sk_rht_destroy(net);
101}
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
 
 
 
 
 
110static int __init tipc_init(void)
111{
112	int err;
113
114	pr_info("Activated (version " TIPC_MOD_VER ")\n");
115
116	sysctl_tipc_rmem[0] = RCVBUF_MIN;
117	sysctl_tipc_rmem[1] = RCVBUF_DEF;
118	sysctl_tipc_rmem[2] = RCVBUF_MAX;
119
120	err = tipc_netlink_start();
121	if (err)
122		goto out_netlink;
123
124	err = tipc_netlink_compat_start();
125	if (err)
126		goto out_netlink_compat;
127
128	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
136	err = register_pernet_subsys(&tipc_net_ops);
137	if (err)
138		goto out_pernet;
139
 
 
 
 
 
 
 
 
140	err = tipc_bearer_setup();
141	if (err)
142		goto out_bearer;
143
144	pr_info("Started in single node mode\n");
145	return 0;
146out_bearer:
147	unregister_pernet_subsys(&tipc_net_ops);
 
 
 
 
148out_pernet:
149	tipc_unregister_sysctl();
150out_sysctl:
151	tipc_socket_stop();
152out_socket:
153	tipc_netlink_compat_stop();
154out_netlink_compat:
155	tipc_netlink_stop();
156out_netlink:
157	pr_err("Unable to start in single node mode\n");
158	return err;
159}
160
161static void __exit tipc_exit(void)
162{
163	tipc_bearer_cleanup();
164	unregister_pernet_subsys(&tipc_net_ops);
 
 
165	tipc_netlink_stop();
166	tipc_netlink_compat_stop();
167	tipc_socket_stop();
168	tipc_unregister_sysctl();
169
170	pr_info("Deactivated\n");
171}
172
173module_init(tipc_init);
174module_exit(tipc_exit);
175
176MODULE_DESCRIPTION("TIPC: Transparent Inter Process Communication");
177MODULE_LICENSE("Dual BSD/GPL");
178MODULE_VERSION(TIPC_MOD_VER);