net/tipc/core.c

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This source file includes following definitions.
tipc_init_net
tipc_exit_net
tipc_init
tipc_exit
   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 */
  49 unsigned int tipc_net_id __read_mostly;
  50 int sysctl_tipc_rmem[3] __read_mostly;  /* min/default/max */
  51 
  52 static 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 
  89 out_bclink:
  90         tipc_nametbl_stop(net);
  91 out_nametbl:
  92         tipc_sk_rht_destroy(net);
  93 out_sk_rht:
  94         return err;
  95 }
  96 
  97 static 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 
 106 static 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 
 113 static struct pernet_operations tipc_topsrv_net_ops = {
 114         .init = tipc_topsrv_init_net,
 115         .exit = tipc_topsrv_exit_net,
 116 };
 117 
 118 static 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_register_sysctl();
 129         if (err)
 130                 goto out_sysctl;
 131 
 132         err = register_pernet_device(&tipc_net_ops);
 133         if (err)
 134                 goto out_pernet;
 135 
 136         err = tipc_socket_init();
 137         if (err)
 138                 goto out_socket;
 139 
 140         err = register_pernet_device(&tipc_topsrv_net_ops);
 141         if (err)
 142                 goto out_pernet_topsrv;
 143 
 144         err = tipc_bearer_setup();
 145         if (err)
 146                 goto out_bearer;
 147 
 148         err = tipc_netlink_start();
 149         if (err)
 150                 goto out_netlink;
 151 
 152         err = tipc_netlink_compat_start();
 153         if (err)
 154                 goto out_netlink_compat;
 155 
 156         pr_info("Started in single node mode\n");
 157         return 0;
 158 
 159 out_netlink_compat:
 160         tipc_netlink_stop();
 161 out_netlink:
 162         tipc_bearer_cleanup();
 163 out_bearer:
 164         unregister_pernet_device(&tipc_topsrv_net_ops);
 165 out_pernet_topsrv:
 166         tipc_socket_stop();
 167 out_socket:
 168         unregister_pernet_device(&tipc_net_ops);
 169 out_pernet:
 170         tipc_unregister_sysctl();
 171 out_sysctl:
 172         pr_err("Unable to start in single node mode\n");
 173         return err;
 174 }
 175 
 176 static void __exit tipc_exit(void)
 177 {
 178         tipc_netlink_compat_stop();
 179         tipc_netlink_stop();
 180         tipc_bearer_cleanup();
 181         unregister_pernet_device(&tipc_topsrv_net_ops);
 182         tipc_socket_stop();
 183         unregister_pernet_device(&tipc_net_ops);
 184         tipc_unregister_sysctl();
 185 
 186         pr_info("Deactivated\n");
 187 }
 188 
 189 module_init(tipc_init);
 190 module_exit(tipc_exit);
 191 
 192 MODULE_DESCRIPTION("TIPC: Transparent Inter Process Communication");
 193 MODULE_LICENSE("Dual BSD/GPL");
 194 MODULE_VERSION(TIPC_MOD_VER);
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root/net/tipc/core.c

DEFINITIONS
