2 * net/tipc/core.c: TIPC module code
4 * Copyright (c) 2003-2006, 2013, Ericsson AB
5 * Copyright (c) 2005-2006, 2010-2013, Wind River Systems
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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.
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38 #include "name_table.h"
46 #include <linux/module.h>
48 /* configurable TIPC parameters */
49 unsigned int tipc_net_id __read_mostly;
50 int sysctl_tipc_rmem[3] __read_mostly; /* min/default/max */
52 static int __net_init tipc_init_net(struct net *net)
54 struct tipc_net *tn = net_generic(net, tipc_net_id);
60 tn->addr_trial_end = 0;
61 tn->capabilities = TIPC_NODE_CAPABILITIES;
62 INIT_WORK(&tn->final_work.work, tipc_net_finalize_work);
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);
70 err = tipc_sk_rht_init(net);
74 err = tipc_nametbl_init(net);
78 INIT_LIST_HEAD(&tn->dist_queue);
80 err = tipc_bcast_init(net);
84 err = tipc_attach_loopback(net);
91 tipc_nametbl_stop(net);
93 tipc_sk_rht_destroy(net);
98 static void __net_exit tipc_exit_net(struct net *net)
100 struct tipc_net *tn = tipc_net(net);
102 tipc_detach_loopback(net);
103 /* Make sure the tipc_net_finalize_work() finished */
104 cancel_work_sync(&tn->final_work.work);
107 tipc_bcast_stop(net);
108 tipc_nametbl_stop(net);
109 tipc_sk_rht_destroy(net);
111 while (atomic_read(&tn->wq_count))
115 static void __net_exit tipc_pernet_pre_exit(struct net *net)
117 tipc_node_pre_cleanup_net(net);
120 static struct pernet_operations tipc_pernet_pre_exit_ops = {
121 .pre_exit = tipc_pernet_pre_exit,
124 static struct pernet_operations tipc_net_ops = {
125 .init = tipc_init_net,
126 .exit = tipc_exit_net,
128 .size = sizeof(struct tipc_net),
131 static struct pernet_operations tipc_topsrv_net_ops = {
132 .init = tipc_topsrv_init_net,
133 .exit = tipc_topsrv_exit_net,
136 static int __init tipc_init(void)
140 pr_info("Activated (version " TIPC_MOD_VER ")\n");
142 sysctl_tipc_rmem[0] = RCVBUF_MIN;
143 sysctl_tipc_rmem[1] = RCVBUF_DEF;
144 sysctl_tipc_rmem[2] = RCVBUF_MAX;
146 err = tipc_register_sysctl();
150 err = register_pernet_device(&tipc_net_ops);
154 err = tipc_socket_init();
158 err = register_pernet_device(&tipc_topsrv_net_ops);
160 goto out_pernet_topsrv;
162 err = register_pernet_subsys(&tipc_pernet_pre_exit_ops);
164 goto out_register_pernet_subsys;
166 err = tipc_bearer_setup();
170 err = tipc_netlink_start();
174 err = tipc_netlink_compat_start();
176 goto out_netlink_compat;
178 pr_info("Started in single node mode\n");
184 tipc_bearer_cleanup();
186 unregister_pernet_subsys(&tipc_pernet_pre_exit_ops);
187 out_register_pernet_subsys:
188 unregister_pernet_device(&tipc_topsrv_net_ops);
192 unregister_pernet_device(&tipc_net_ops);
194 tipc_unregister_sysctl();
196 pr_err("Unable to start in single node mode\n");
200 static void __exit tipc_exit(void)
202 tipc_netlink_compat_stop();
204 tipc_bearer_cleanup();
205 unregister_pernet_subsys(&tipc_pernet_pre_exit_ops);
206 unregister_pernet_device(&tipc_topsrv_net_ops);
208 unregister_pernet_device(&tipc_net_ops);
209 tipc_unregister_sysctl();
211 pr_info("Deactivated\n");
214 module_init(tipc_init);
215 module_exit(tipc_exit);
217 MODULE_DESCRIPTION("TIPC: Transparent Inter Process Communication");
218 MODULE_LICENSE("Dual BSD/GPL");
219 MODULE_VERSION(TIPC_MOD_VER);