2 * net/tipc/core.c: TIPC module code
4 * Copyright (c) 2003-2006, Ericsson AB
5 * Copyright (c) 2005-2006, 2010-2011, 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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37 #include <linux/module.h>
41 #include "name_table.h"
46 #ifndef CONFIG_TIPC_PORTS
47 #define CONFIG_TIPC_PORTS 8191
50 #ifndef CONFIG_TIPC_LOG
51 #define CONFIG_TIPC_LOG 0
54 /* global variables used by multiple sub-systems within TIPC */
57 const char tipc_alphabet[] =
58 "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789_.";
60 /* configurable TIPC parameters */
63 int tipc_max_subscriptions;
64 int tipc_max_publications;
66 int tipc_remote_management;
70 * tipc_buf_acquire - creates a TIPC message buffer
71 * @size: message size (including TIPC header)
73 * Returns a new buffer with data pointers set to the specified size.
75 * NOTE: Headroom is reserved to allow prepending of a data link header.
76 * There may also be unrequested tailroom present at the buffer's end.
78 struct sk_buff *tipc_buf_acquire(u32 size)
81 unsigned int buf_size = (BUF_HEADROOM + size + 3) & ~3u;
83 skb = alloc_skb_fclone(buf_size, GFP_ATOMIC);
85 skb_reserve(skb, BUF_HEADROOM);
93 * tipc_core_stop_net - shut down TIPC networking sub-systems
95 static void tipc_core_stop_net(void)
98 tipc_eth_media_stop();
102 * start_net - start TIPC networking sub-systems
104 int tipc_core_start_net(unsigned long addr)
108 res = tipc_net_start(addr);
110 res = tipc_eth_media_start();
112 tipc_core_stop_net();
117 * tipc_core_stop - switch TIPC from SINGLE NODE to NOT RUNNING mode
119 static void tipc_core_stop(void)
126 tipc_ref_table_stop();
132 * tipc_core_start - switch TIPC from NOT RUNNING to SINGLE NODE mode
134 static int tipc_core_start(void)
138 get_random_bytes(&tipc_random, sizeof(tipc_random));
140 res = tipc_handler_start();
142 res = tipc_ref_table_init(tipc_max_ports, tipc_random);
144 res = tipc_nametbl_init();
146 res = tipc_subscr_start();
148 res = tipc_cfg_init();
150 res = tipc_netlink_start();
152 res = tipc_socket_init();
160 static int __init tipc_init(void)
164 if (tipc_log_resize(CONFIG_TIPC_LOG) != 0)
165 warn("Unable to create log buffer\n");
167 info("Activated (version " TIPC_MOD_VER ")\n");
170 tipc_remote_management = 1;
171 tipc_max_publications = 10000;
172 tipc_max_subscriptions = 2000;
173 tipc_max_ports = CONFIG_TIPC_PORTS;
176 res = tipc_core_start();
178 err("Unable to start in single node mode\n");
180 info("Started in single node mode\n");
184 static void __exit tipc_exit(void)
186 tipc_core_stop_net();
188 info("Deactivated\n");
191 module_init(tipc_init);
192 module_exit(tipc_exit);
194 MODULE_DESCRIPTION("TIPC: Transparent Inter Process Communication");
195 MODULE_LICENSE("Dual BSD/GPL");
196 MODULE_VERSION(TIPC_MOD_VER);