| /* |
| * 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> |
| |
| /* global variables used by multiple sub-systems within TIPC */ |
| int tipc_random __read_mostly; |
| |
| /* configurable TIPC parameters */ |
| u32 tipc_own_addr __read_mostly; |
| int tipc_net_id __read_mostly; |
| int sysctl_tipc_rmem[3] __read_mostly; /* min/default/max */ |
| |
| /** |
| * tipc_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 *tipc_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; |
| } |
| |
| static int __init tipc_init(void) |
| { |
| int err; |
| |
| pr_info("Activated (version " TIPC_MOD_VER ")\n"); |
| |
| tipc_own_addr = 0; |
| tipc_net_id = 4711; |
| |
| 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; |
| |
| get_random_bytes(&tipc_random, sizeof(tipc_random)); |
| |
| err = tipc_sk_rht_init(); |
| if (err) |
| goto out_reftbl; |
| |
| err = tipc_nametbl_init(); |
| if (err) |
| goto out_nametbl; |
| |
| 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 = tipc_subscr_start(); |
| if (err) |
| goto out_subscr; |
| |
| err = tipc_bearer_setup(); |
| if (err) |
| goto out_bearer; |
| |
| pr_info("Started in single node mode\n"); |
| return 0; |
| out_bearer: |
| tipc_subscr_stop(); |
| out_subscr: |
| tipc_unregister_sysctl(); |
| out_sysctl: |
| tipc_socket_stop(); |
| out_socket: |
| tipc_netlink_stop(); |
| out_netlink: |
| tipc_nametbl_stop(); |
| out_nametbl: |
| tipc_sk_rht_destroy(); |
| out_reftbl: |
| pr_err("Unable to start in single node mode\n"); |
| return err; |
| } |
| |
| static void __exit tipc_exit(void) |
| { |
| tipc_net_stop(); |
| tipc_bearer_cleanup(); |
| tipc_netlink_stop(); |
| tipc_subscr_stop(); |
| tipc_nametbl_stop(); |
| tipc_socket_stop(); |
| tipc_unregister_sysctl(); |
| tipc_sk_rht_destroy(); |
| |
| 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); |