162 lines
4.3 KiB
C
162 lines
4.3 KiB
C
/*
|
|
* net/tipc/core.c: TIPC module code
|
|
*
|
|
* Copyright (c) 2003-2006, 2013, Ericsson AB
|
|
* Copyright (c) 2005-2006, 2010-2013, Wind River Systems
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. Neither the names of the copyright holders nor the names of its
|
|
* contributors may be used to endorse or promote products derived from
|
|
* this software without specific prior written permission.
|
|
*
|
|
* Alternatively, this software may be distributed under the terms of the
|
|
* GNU General Public License ("GPL") version 2 as published by the Free
|
|
* Software Foundation.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
|
|
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
|
|
|
|
#include "core.h"
|
|
#include "name_table.h"
|
|
#include "subscr.h"
|
|
#include "config.h"
|
|
#include "socket.h"
|
|
|
|
#include <linux/module.h>
|
|
|
|
/* configurable TIPC parameters */
|
|
int tipc_net_id __read_mostly;
|
|
int sysctl_tipc_rmem[3] __read_mostly; /* min/default/max */
|
|
|
|
static int __net_init tipc_init_net(struct net *net)
|
|
{
|
|
struct tipc_net *tn = net_generic(net, tipc_net_id);
|
|
int err;
|
|
|
|
tn->net_id = 4711;
|
|
tn->own_addr = 0;
|
|
get_random_bytes(&tn->random, sizeof(int));
|
|
INIT_LIST_HEAD(&tn->node_list);
|
|
spin_lock_init(&tn->node_list_lock);
|
|
|
|
err = tipc_sk_rht_init(net);
|
|
if (err)
|
|
goto out_sk_rht;
|
|
|
|
err = tipc_nametbl_init(net);
|
|
if (err)
|
|
goto out_nametbl;
|
|
|
|
err = tipc_subscr_start(net);
|
|
if (err)
|
|
goto out_subscr;
|
|
return 0;
|
|
|
|
out_subscr:
|
|
tipc_nametbl_stop(net);
|
|
out_nametbl:
|
|
tipc_sk_rht_destroy(net);
|
|
out_sk_rht:
|
|
return err;
|
|
}
|
|
|
|
static void __net_exit tipc_exit_net(struct net *net)
|
|
{
|
|
tipc_subscr_stop(net);
|
|
tipc_net_stop(net);
|
|
tipc_nametbl_stop(net);
|
|
tipc_sk_rht_destroy(net);
|
|
}
|
|
|
|
static struct pernet_operations tipc_net_ops = {
|
|
.init = tipc_init_net,
|
|
.exit = tipc_exit_net,
|
|
.id = &tipc_net_id,
|
|
.size = sizeof(struct tipc_net),
|
|
};
|
|
|
|
static int __init tipc_init(void)
|
|
{
|
|
int err;
|
|
|
|
pr_info("Activated (version " TIPC_MOD_VER ")\n");
|
|
|
|
sysctl_tipc_rmem[0] = TIPC_CONN_OVERLOAD_LIMIT >> 4 <<
|
|
TIPC_LOW_IMPORTANCE;
|
|
sysctl_tipc_rmem[1] = TIPC_CONN_OVERLOAD_LIMIT >> 4 <<
|
|
TIPC_CRITICAL_IMPORTANCE;
|
|
sysctl_tipc_rmem[2] = TIPC_CONN_OVERLOAD_LIMIT;
|
|
|
|
err = tipc_netlink_start();
|
|
if (err)
|
|
goto out_netlink;
|
|
|
|
err = tipc_socket_init();
|
|
if (err)
|
|
goto out_socket;
|
|
|
|
err = tipc_register_sysctl();
|
|
if (err)
|
|
goto out_sysctl;
|
|
|
|
err = register_pernet_subsys(&tipc_net_ops);
|
|
if (err)
|
|
goto out_pernet;
|
|
|
|
err = tipc_bearer_setup();
|
|
if (err)
|
|
goto out_bearer;
|
|
|
|
pr_info("Started in single node mode\n");
|
|
return 0;
|
|
out_bearer:
|
|
unregister_pernet_subsys(&tipc_net_ops);
|
|
out_pernet:
|
|
tipc_unregister_sysctl();
|
|
out_sysctl:
|
|
tipc_socket_stop();
|
|
out_socket:
|
|
tipc_netlink_stop();
|
|
out_netlink:
|
|
pr_err("Unable to start in single node mode\n");
|
|
return err;
|
|
}
|
|
|
|
static void __exit tipc_exit(void)
|
|
{
|
|
tipc_bearer_cleanup();
|
|
tipc_netlink_stop();
|
|
tipc_socket_stop();
|
|
tipc_unregister_sysctl();
|
|
unregister_pernet_subsys(&tipc_net_ops);
|
|
|
|
pr_info("Deactivated\n");
|
|
}
|
|
|
|
module_init(tipc_init);
|
|
module_exit(tipc_exit);
|
|
|
|
MODULE_DESCRIPTION("TIPC: Transparent Inter Process Communication");
|
|
MODULE_LICENSE("Dual BSD/GPL");
|
|
MODULE_VERSION(TIPC_MOD_VER);
|