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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21 * GNU General Public License ("GPL") version 2 as published by the Free
22 * Software Foundation.
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39 #include "name_table.h"
43 #include <linux/module.h>
45 #ifndef CONFIG_TIPC_PORTS
46 #define CONFIG_TIPC_PORTS 8191
50 /* global variables used by multiple sub-systems within TIPC */
53 const char tipc_alphabet[] =
54 "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789_.";
56 /* configurable TIPC parameters */
59 int tipc_max_subscriptions;
60 int tipc_max_publications;
62 int tipc_remote_management;
66 * tipc_buf_acquire - creates a TIPC message buffer
67 * @size: message size (including TIPC header)
69 * Returns a new buffer with data pointers set to the specified size.
71 * NOTE: Headroom is reserved to allow prepending of a data link header.
72 * There may also be unrequested tailroom present at the buffer's end.
74 struct sk_buff *tipc_buf_acquire(u32 size)
77 unsigned int buf_size = (BUF_HEADROOM + size + 3) & ~3u;
79 skb = alloc_skb_fclone(buf_size, GFP_ATOMIC);
81 skb_reserve(skb, BUF_HEADROOM);
89 * tipc_core_stop_net - shut down TIPC networking sub-systems
91 static void tipc_core_stop_net(void)
94 tipc_eth_media_stop();
98 * start_net - start TIPC networking sub-systems
100 int tipc_core_start_net(unsigned long addr)
104 res = tipc_net_start(addr);
106 res = tipc_eth_media_start();
108 tipc_core_stop_net();
113 * tipc_core_stop - switch TIPC from SINGLE NODE to NOT RUNNING mode
115 static void tipc_core_stop(void)
122 tipc_ref_table_stop();
127 * tipc_core_start - switch TIPC from NOT RUNNING to SINGLE NODE mode
129 static int tipc_core_start(void)
133 get_random_bytes(&tipc_random, sizeof(tipc_random));
135 res = tipc_handler_start();
137 res = tipc_ref_table_init(tipc_max_ports, tipc_random);
139 res = tipc_nametbl_init();
141 res = tipc_subscr_start();
143 res = tipc_cfg_init();
145 res = tipc_netlink_start();
147 res = tipc_socket_init();
155 static int __init tipc_init(void)
159 pr_info("Activated (version " TIPC_MOD_VER ")\n");
162 tipc_remote_management = 1;
163 tipc_max_publications = 10000;
164 tipc_max_subscriptions = 2000;
165 tipc_max_ports = CONFIG_TIPC_PORTS;
168 res = tipc_core_start();
170 pr_err("Unable to start in single node mode\n");
172 pr_info("Started in single node mode\n");
176 static void __exit tipc_exit(void)
178 tipc_core_stop_net();
180 pr_info("Deactivated\n");
183 module_init(tipc_init);
184 module_exit(tipc_exit);
186 MODULE_DESCRIPTION("TIPC: Transparent Inter Process Communication");
187 MODULE_LICENSE("Dual BSD/GPL");
188 MODULE_VERSION(TIPC_MOD_VER);