/*
* net/tipc/core.c: TIPC module code
*
* Copyright (c) 2003-2005, Ericsson Research Canada
* Copyright (c) 2005, Wind River Systems
* Copyright (c) 2005-2006, Ericsson AB
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
* 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.
* 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.
*
* 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.
*/
#include <linux/init.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/version.h>
#include <linux/random.h>
#include "core.h"
#include "dbg.h"
#include "ref.h"
#include "net.h"
#include "user_reg.h"
#include "name_table.h"
#include "subscr.h"
#include "config.h"
int eth_media_start(void);
void eth_media_stop(void);
int handler_start(void);
void handler_stop(void);
int socket_init(void);
void socket_stop(void);
int netlink_start(void);
void netlink_stop(void);
#define MOD_NAME "tipc_start: "
#ifndef CONFIG_TIPC_ZONES
#define CONFIG_TIPC_ZONES 3
#endif
#ifndef CONFIG_TIPC_CLUSTERS
#define CONFIG_TIPC_CLUSTERS 1
#endif
#ifndef CONFIG_TIPC_NODES
#define CONFIG_TIPC_NODES 255
#endif
#ifndef CONFIG_TIPC_SLAVE_NODES
#define CONFIG_TIPC_SLAVE_NODES 0
#endif
#ifndef CONFIG_TIPC_PORTS
#define CONFIG_TIPC_PORTS 8191
#endif
#ifndef CONFIG_TIPC_LOG
#define CONFIG_TIPC_LOG 0
#endif
/* global variables used by multiple sub-systems within TIPC */
int tipc_mode = TIPC_NOT_RUNNING;
int tipc_random;
atomic_t tipc_user_count = ATOMIC_INIT(0);
const char tipc_alphabet[] =
"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789_";
/* configurable TIPC parameters */
u32 tipc_own_addr;
int tipc_max_zones;
int tipc_max_clusters;
int tipc_max_nodes;
int tipc_max_slaves;
int tipc_max_ports;
int tipc_max_subscriptions;
int tipc_max_publications;
int tipc_net_id;
int tipc_remote_management;
int tipc_get_mode(void)
{
return tipc_mode;
}
/**
* stop_net - shut down TIPC networking sub-systems
*/
void stop_net(void)
{
eth_media_stop();
tipc_stop_net();
}
/**
* start_net - start TIPC networking sub-systems
*/
int start_net(void)
{
int res;
if ((res = tipc_start_net()) ||
(res = eth_media_start())) {
stop_net();
}
return res;
}
/**
* stop_core - switch TIPC from SINGLE NODE to NOT RUNNING mode
*/
void stop_core(void)
{
if (tipc_mode != TIPC_NODE_MODE)
return;
tipc_mode = TIPC_NOT_RUNNING;
netlink_stop();
handler_stop();
cfg_stop();
subscr_stop();
reg_stop();
nametbl_stop();
ref_table_stop();
socket_stop();
}
/**
* start_core - switch TIPC from NOT RUNNING to SINGLE NODE mode
*/
int start_core(void)
{
int res;
if (tipc_mode != TIPC_NOT_RUNNING)
return -ENOPROTOOPT;
get_random_bytes(&tipc_random, sizeof(tipc_random));
tipc_mode = TIPC_NODE_MODE;
if ((res = handler_start()) ||
(res = ref_table_init(tipc_max_ports + tipc_max_subscriptions,
tipc_random)) ||
(res = reg_start()) ||
(res = nametbl_init()) ||
(res = k_signal((Handler)subscr_start, 0)) ||
(res = k_signal((Handler)cfg_init, 0)) ||
(res = netlink_start()) ||
(res = socket_init())) {
stop_core();
}
return res;
}
static int __init tipc_init(void)
{
int res;
log_reinit(CONFIG_TIPC_LOG);
info("Activated (compiled " __DATE__ " " __TIME__ ")\n");
tipc_own_addr = 0;
tipc_remote_management = 1;
tipc_max_publications = 10000;
tipc_max_subscriptions = 2000;
tipc_max_ports = delimit(CONFIG_TIPC_PORTS, 127, 65536);
tipc_max_zones = delimit(CONFIG_TIPC_ZONES, 1, 511);
tipc_max_clusters = delimit(CONFIG_TIPC_CLUSTERS, 1, 1);
tipc_max_nodes = delimit(CONFIG_TIPC_NODES, 8, 2047);
tipc_max_slaves = delimit(CONFIG_TIPC_SLAVE_NODES, 0, 2047);
tipc_net_id = 4711;
if ((res = start_core()))
err("Unable to start in single node mode\n");
else
info("Started in single node mode\n");
return res;
}
static void __exit tipc_exit(void)
{
stop_net();
stop_core();
info("Deactivated\n");
log_stop();
}
module_init(tipc_init);
module_exit(tipc_exit);
MODULE_DESCRIPTION("TIPC: Transparent Inter Process Communication");
MODULE_LICENSE("Dual BSD/GPL");
/* Native TIPC API for kernel-space applications (see tipc.h) */
EXPORT_SYMBOL(tipc_attach);
EXPORT_SYMBOL(tipc_detach);
EXPORT_SYMBOL(tipc_get_addr);
EXPORT_SYMBOL(tipc_get_mode);
EXPORT_SYMBOL(tipc_createport);
EXPORT_SYMBOL(tipc_deleteport);
EXPORT_SYMBOL(tipc_ownidentity);
EXPORT_SYMBOL(tipc_portimportance);
EXPORT_SYMBOL(tipc_set_portimportance);
EXPORT_SYMBOL(tipc_portunreliable);
EXPORT_SYMBOL(tipc_set_portunreliable);
EXPORT_SYMBOL(tipc_portunreturnable);
EXPORT_SYMBOL(tipc_set_portunreturnable);
EXPORT_SYMBOL(tipc_publish);
EXPORT_SYMBOL(tipc_withdraw);
EXPORT_SYMBOL(tipc_connect2port);
EXPORT_SYMBOL(tipc_disconnect);
EXPORT_SYMBOL(tipc_shutdown);
EXPORT_SYMBOL(tipc_isconnected);
EXPORT_SYMBOL(tipc_peer);
EXPORT_SYMBOL(tipc_ref_valid);
EXPORT_SYMBOL(tipc_send);
EXPORT_SYMBOL(tipc_send_buf);
EXPORT_SYMBOL(tipc_send2name);
EXPORT_SYMBOL(tipc_forward2name);
EXPORT_SYMBOL(tipc_send_buf2name);
EXPORT_SYMBOL(tipc_forward_buf2name);
EXPORT_SYMBOL(tipc_send2port);
EXPORT_SYMBOL(tipc_forward2port);
EXPORT_SYMBOL(tipc_send_buf2port);
EXPORT_SYMBOL(tipc_forward_buf2port);
EXPORT_SYMBOL(tipc_multicast);
/* EXPORT_SYMBOL(tipc_multicast_buf); not available yet */
EXPORT_SYMBOL(tipc_ispublished);
EXPORT_SYMBOL(tipc_available_nodes);
/* TIPC API for external bearers (see tipc_bearer.h) */
EXPORT_SYMBOL(tipc_block_bearer);
EXPORT_SYMBOL(tipc_continue);
EXPORT_SYMBOL(tipc_disable_bearer);
EXPORT_SYMBOL(tipc_enable_bearer);
EXPORT_SYMBOL(tipc_recv_msg);
EXPORT_SYMBOL(tipc_register_media);
/* TIPC API for external APIs (see tipc_port.h) */
EXPORT_SYMBOL(tipc_createport_raw);
EXPORT_SYMBOL(tipc_set_msg_option);
EXPORT_SYMBOL(tipc_reject_msg);
EXPORT_SYMBOL(tipc_send_buf_fast);
EXPORT_SYMBOL(tipc_acknowledge);
EXPORT_SYMBOL(tipc_get_port);
EXPORT_SYMBOL(tipc_get_handle);
