2006-01-02 21:04:38 +03:00
|
|
|
/*
|
|
|
|
* net/tipc/core.c: TIPC module code
|
|
|
|
*
|
2006-01-11 20:40:41 +03:00
|
|
|
* Copyright (c) 2003-2006, Ericsson AB
|
2006-06-26 10:42:47 +04:00
|
|
|
* Copyright (c) 2005-2006, Wind River Systems
|
2006-01-02 21:04:38 +03:00
|
|
|
* All rights reserved.
|
|
|
|
*
|
2006-01-11 15:30:43 +03:00
|
|
|
* Redistribution and use in source and binary forms, with or without
|
2006-01-02 21:04:38 +03:00
|
|
|
* modification, are permitted provided that the following conditions are met:
|
|
|
|
*
|
2006-01-11 15:30:43 +03:00
|
|
|
* 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.
|
2006-01-02 21:04:38 +03:00
|
|
|
*
|
2006-01-11 15:30:43 +03:00
|
|
|
* 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
|
2006-01-02 21:04:38 +03:00
|
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
|
|
|
*/
|
|
|
|
|
|
|
|
#include <linux/init.h>
|
|
|
|
#include <linux/module.h>
|
|
|
|
#include <linux/kernel.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"
|
|
|
|
|
|
|
|
|
|
|
|
#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);
|
|
|
|
|
2007-02-09 17:25:21 +03:00
|
|
|
const char tipc_alphabet[] =
|
2006-10-17 08:50:20 +04:00
|
|
|
"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789_.";
|
2006-01-02 21:04:38 +03:00
|
|
|
|
|
|
|
/* 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;
|
|
|
|
}
|
|
|
|
|
2010-05-11 18:30:17 +04:00
|
|
|
/**
|
|
|
|
* buf_acquire - creates a TIPC message buffer
|
|
|
|
* @size: message size (including TIPC header)
|
|
|
|
*
|
|
|
|
* Returns a new buffer with data pointers set to the specified size.
|
|
|
|
*
|
|
|
|
* NOTE: Headroom is reserved to allow prepending of a data link header.
|
|
|
|
* There may also be unrequested tailroom present at the buffer's end.
|
|
|
|
*/
|
|
|
|
|
|
|
|
struct sk_buff *buf_acquire(u32 size)
|
|
|
|
{
|
|
|
|
struct sk_buff *skb;
|
|
|
|
unsigned int buf_size = (BUF_HEADROOM + size + 3) & ~3u;
|
|
|
|
|
|
|
|
skb = alloc_skb_fclone(buf_size, GFP_ATOMIC);
|
|
|
|
if (skb) {
|
|
|
|
skb_reserve(skb, BUF_HEADROOM);
|
|
|
|
skb_put(skb, size);
|
|
|
|
skb->next = NULL;
|
|
|
|
}
|
|
|
|
return skb;
|
|
|
|
}
|
|
|
|
|
2006-01-02 21:04:38 +03:00
|
|
|
/**
|
2006-01-18 02:38:21 +03:00
|
|
|
* tipc_core_stop_net - shut down TIPC networking sub-systems
|
2006-01-02 21:04:38 +03:00
|
|
|
*/
|
|
|
|
|
2006-01-18 02:38:21 +03:00
|
|
|
void tipc_core_stop_net(void)
|
2006-01-02 21:04:38 +03:00
|
|
|
{
|
2006-01-18 02:38:21 +03:00
|
|
|
tipc_eth_media_stop();
|
|
|
|
tipc_net_stop();
|
2006-01-02 21:04:38 +03:00
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* start_net - start TIPC networking sub-systems
|
|
|
|
*/
|
|
|
|
|
2008-05-22 01:55:04 +04:00
|
|
|
int tipc_core_start_net(unsigned long addr)
|
2006-01-02 21:04:38 +03:00
|
|
|
{
|
|
|
|
int res;
|
|
|
|
|
2008-05-22 01:55:04 +04:00
|
|
|
if ((res = tipc_net_start(addr)) ||
|
2006-01-18 02:38:21 +03:00
|
|
|
(res = tipc_eth_media_start())) {
|
|
|
|
tipc_core_stop_net();
|
2006-01-02 21:04:38 +03:00
|
|
|
}
|
|
|
|
return res;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
2006-01-18 02:38:21 +03:00
|
|
|
* tipc_core_stop - switch TIPC from SINGLE NODE to NOT RUNNING mode
|
2006-01-02 21:04:38 +03:00
|
|
|
*/
|
|
|
|
|
2006-01-18 02:38:21 +03:00
|
|
|
void tipc_core_stop(void)
|
2006-01-02 21:04:38 +03:00
|
|
|
{
|
|
|
|
if (tipc_mode != TIPC_NODE_MODE)
|
|
|
|
return;
|
|
|
|
|
|
|
|
tipc_mode = TIPC_NOT_RUNNING;
|
|
|
|
|
2006-01-18 02:38:21 +03:00
|
|
|
tipc_netlink_stop();
|
|
|
|
tipc_handler_stop();
|
|
|
|
tipc_cfg_stop();
|
|
|
|
tipc_subscr_stop();
|
|
|
|
tipc_reg_stop();
|
|
|
|
tipc_nametbl_stop();
|
|
|
|
tipc_ref_table_stop();
|
|
|
|
tipc_socket_stop();
|
2006-01-02 21:04:38 +03:00
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
2006-01-18 02:38:21 +03:00
|
|
|
* tipc_core_start - switch TIPC from NOT RUNNING to SINGLE NODE mode
|
2006-01-02 21:04:38 +03:00
|
|
|
*/
|
|
|
|
|
2006-01-18 02:38:21 +03:00
|
|
|
int tipc_core_start(void)
|
2006-01-02 21:04:38 +03:00
|
|
|
{
|
|
|
|
int res;
|
|
|
|
|
|
|
|
if (tipc_mode != TIPC_NOT_RUNNING)
|
|
|
|
return -ENOPROTOOPT;
|
|
|
|
|
|
|
|
get_random_bytes(&tipc_random, sizeof(tipc_random));
|
|
|
|
tipc_mode = TIPC_NODE_MODE;
|
|
|
|
|
2007-02-09 17:25:21 +03:00
|
|
|
if ((res = tipc_handler_start()) ||
|
2008-05-20 00:29:47 +04:00
|
|
|
(res = tipc_ref_table_init(tipc_max_ports, tipc_random)) ||
|
2006-01-18 02:38:21 +03:00
|
|
|
(res = tipc_reg_start()) ||
|
|
|
|
(res = tipc_nametbl_init()) ||
|
2007-02-09 17:25:21 +03:00
|
|
|
(res = tipc_k_signal((Handler)tipc_subscr_start, 0)) ||
|
|
|
|
(res = tipc_k_signal((Handler)tipc_cfg_init, 0)) ||
|
2006-01-18 02:38:21 +03:00
|
|
|
(res = tipc_netlink_start()) ||
|
|
|
|
(res = tipc_socket_init())) {
|
|
|
|
tipc_core_stop();
|
2006-01-02 21:04:38 +03:00
|
|
|
}
|
|
|
|
return res;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
static int __init tipc_init(void)
|
|
|
|
{
|
|
|
|
int res;
|
|
|
|
|
2008-05-05 12:20:04 +04:00
|
|
|
tipc_log_resize(CONFIG_TIPC_LOG);
|
2007-02-09 17:25:21 +03:00
|
|
|
info("Activated (version " TIPC_MOD_VER
|
2006-06-29 23:33:51 +04:00
|
|
|
" compiled " __DATE__ " " __TIME__ ")\n");
|
2006-01-02 21:04:38 +03:00
|
|
|
|
|
|
|
tipc_own_addr = 0;
|
|
|
|
tipc_remote_management = 1;
|
|
|
|
tipc_max_publications = 10000;
|
|
|
|
tipc_max_subscriptions = 2000;
|
2009-12-24 20:26:48 +03:00
|
|
|
tipc_max_ports = CONFIG_TIPC_PORTS;
|
|
|
|
tipc_max_zones = CONFIG_TIPC_ZONES;
|
|
|
|
tipc_max_clusters = CONFIG_TIPC_CLUSTERS;
|
|
|
|
tipc_max_nodes = CONFIG_TIPC_NODES;
|
|
|
|
tipc_max_slaves = CONFIG_TIPC_SLAVE_NODES;
|
2006-01-02 21:04:38 +03:00
|
|
|
tipc_net_id = 4711;
|
|
|
|
|
2006-01-18 02:38:21 +03:00
|
|
|
if ((res = tipc_core_start()))
|
2006-01-02 21:04:38 +03:00
|
|
|
err("Unable to start in single node mode\n");
|
2007-02-09 17:25:21 +03:00
|
|
|
else
|
2006-01-02 21:04:38 +03:00
|
|
|
info("Started in single node mode\n");
|
2007-02-09 17:25:21 +03:00
|
|
|
return res;
|
2006-01-02 21:04:38 +03:00
|
|
|
}
|
|
|
|
|
|
|
|
static void __exit tipc_exit(void)
|
|
|
|
{
|
2006-01-18 02:38:21 +03:00
|
|
|
tipc_core_stop_net();
|
|
|
|
tipc_core_stop();
|
2006-01-02 21:04:38 +03:00
|
|
|
info("Deactivated\n");
|
2008-05-05 12:20:04 +04:00
|
|
|
tipc_log_resize(0);
|
2006-01-02 21:04:38 +03:00
|
|
|
}
|
|
|
|
|
|
|
|
module_init(tipc_init);
|
|
|
|
module_exit(tipc_exit);
|
|
|
|
|
|
|
|
MODULE_DESCRIPTION("TIPC: Transparent Inter Process Communication");
|
|
|
|
MODULE_LICENSE("Dual BSD/GPL");
|
2006-06-26 10:42:47 +04:00
|
|
|
MODULE_VERSION(TIPC_MOD_VER);
|
2006-01-02 21:04:38 +03:00
|
|
|
|
|
|
|
/* 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);
|
2007-02-09 17:25:21 +03:00
|
|
|
EXPORT_SYMBOL(tipc_continue);
|
2006-01-02 21:04:38 +03:00
|
|
|
EXPORT_SYMBOL(tipc_disable_bearer);
|
|
|
|
EXPORT_SYMBOL(tipc_enable_bearer);
|
|
|
|
EXPORT_SYMBOL(tipc_recv_msg);
|
2007-02-09 17:25:21 +03:00
|
|
|
EXPORT_SYMBOL(tipc_register_media);
|
2006-01-02 21:04:38 +03:00
|
|
|
|
|
|
|
/* TIPC API for external APIs (see tipc_port.h) */
|
|
|
|
|
|
|
|
EXPORT_SYMBOL(tipc_createport_raw);
|
|
|
|
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);
|
|
|
|
|