Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
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
46#include <linux/module.h>
47
48/* configurable TIPC parameters */
49int 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->own_addr = 0;
59 get_random_bytes(&tn->random, sizeof(int));
60 INIT_LIST_HEAD(&tn->node_list);
61 spin_lock_init(&tn->node_list_lock);
62
63 err = tipc_sk_rht_init(net);
64 if (err)
65 goto out_sk_rht;
66
67 err = tipc_nametbl_init(net);
68 if (err)
69 goto out_nametbl;
70
71 err = tipc_topsrv_start(net);
72 if (err)
73 goto out_subscr;
74 return 0;
75
76out_subscr:
77 tipc_nametbl_stop(net);
78out_nametbl:
79 tipc_sk_rht_destroy(net);
80out_sk_rht:
81 return err;
82}
83
84static void __net_exit tipc_exit_net(struct net *net)
85{
86 tipc_topsrv_stop(net);
87 tipc_net_stop(net);
88 tipc_nametbl_stop(net);
89 tipc_sk_rht_destroy(net);
90}
91
92static 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
99static int __init tipc_init(void)
100{
101 int err;
102
103 pr_info("Activated (version " TIPC_MOD_VER ")\n");
104
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
111 err = tipc_netlink_start();
112 if (err)
113 goto out_netlink;
114
115 err = tipc_netlink_compat_start();
116 if (err)
117 goto out_netlink_compat;
118
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
127 err = register_pernet_subsys(&tipc_net_ops);
128 if (err)
129 goto out_pernet;
130
131 err = tipc_bearer_setup();
132 if (err)
133 goto out_bearer;
134
135 pr_info("Started in single node mode\n");
136 return 0;
137out_bearer:
138 unregister_pernet_subsys(&tipc_net_ops);
139out_pernet:
140 tipc_unregister_sysctl();
141out_sysctl:
142 tipc_socket_stop();
143out_socket:
144 tipc_netlink_compat_stop();
145out_netlink_compat:
146 tipc_netlink_stop();
147out_netlink:
148 pr_err("Unable to start in single node mode\n");
149 return err;
150}
151
152static void __exit tipc_exit(void)
153{
154 tipc_bearer_cleanup();
155 unregister_pernet_subsys(&tipc_net_ops);
156 tipc_netlink_stop();
157 tipc_netlink_compat_stop();
158 tipc_socket_stop();
159 tipc_unregister_sysctl();
160
161 pr_info("Deactivated\n");
162}
163
164module_init(tipc_init);
165module_exit(tipc_exit);
166
167MODULE_DESCRIPTION("TIPC: Transparent Inter Process Communication");
168MODULE_LICENSE("Dual BSD/GPL");
169MODULE_VERSION(TIPC_MOD_VER);