diff options
Diffstat (limited to 'net/tipc/core.c')
| -rw-r--r-- | net/tipc/core.c | 231 |
1 files changed, 231 insertions, 0 deletions
diff --git a/net/tipc/core.c b/net/tipc/core.c new file mode 100644 index 000000000..7724499f5 --- /dev/null +++ b/net/tipc/core.c @@ -0,0 +1,231 @@ +/* + * 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. + */ + +#include "core.h" +#include "name_table.h" +#include "subscr.h" +#include "bearer.h" +#include "net.h" +#include "socket.h" +#include "bcast.h" +#include "node.h" +#include "crypto.h" + +#include <linux/module.h> + +/* configurable TIPC parameters */ +unsigned int tipc_net_id __read_mostly; +int sysctl_tipc_rmem[3] __read_mostly; /* min/default/max */ + +static int __net_init tipc_init_net(struct net *net) +{ + struct tipc_net *tn = net_generic(net, tipc_net_id); + int err; + + tn->net_id = 4711; + tn->node_addr = 0; + tn->trial_addr = 0; + tn->addr_trial_end = 0; + tn->capabilities = TIPC_NODE_CAPABILITIES; + INIT_WORK(&tn->work, tipc_net_finalize_work); + memset(tn->node_id, 0, sizeof(tn->node_id)); + memset(tn->node_id_string, 0, sizeof(tn->node_id_string)); + tn->mon_threshold = TIPC_DEF_MON_THRESHOLD; + get_random_bytes(&tn->random, sizeof(int)); + INIT_LIST_HEAD(&tn->node_list); + spin_lock_init(&tn->node_list_lock); + +#ifdef CONFIG_TIPC_CRYPTO + err = tipc_crypto_start(&tn->crypto_tx, net, NULL); + if (err) + goto out_crypto; +#endif + err = tipc_sk_rht_init(net); + if (err) + goto out_sk_rht; + + err = tipc_nametbl_init(net); + if (err) + goto out_nametbl; + + INIT_LIST_HEAD(&tn->dist_queue); + + err = tipc_bcast_init(net); + if (err) + goto out_bclink; + + err = tipc_attach_loopback(net); + if (err) + goto out_bclink; + + return 0; + +out_bclink: + tipc_nametbl_stop(net); +out_nametbl: + tipc_sk_rht_destroy(net); +out_sk_rht: + +#ifdef CONFIG_TIPC_CRYPTO + tipc_crypto_stop(&tn->crypto_tx); +out_crypto: +#endif + return err; +} + +static void __net_exit tipc_exit_net(struct net *net) +{ + struct tipc_net *tn = tipc_net(net); + + tipc_detach_loopback(net); + tipc_net_stop(net); + /* Make sure the tipc_net_finalize_work() finished */ + cancel_work_sync(&tn->work); + tipc_bcast_stop(net); + tipc_nametbl_stop(net); + tipc_sk_rht_destroy(net); +#ifdef CONFIG_TIPC_CRYPTO + tipc_crypto_stop(&tipc_net(net)->crypto_tx); +#endif + while (atomic_read(&tn->wq_count)) + cond_resched(); +} + +static void __net_exit tipc_pernet_pre_exit(struct net *net) +{ + tipc_node_pre_cleanup_net(net); +} + +static struct pernet_operations tipc_pernet_pre_exit_ops = { + .pre_exit = tipc_pernet_pre_exit, +}; + +static struct pernet_operations tipc_net_ops = { + .init = tipc_init_net, + .exit = tipc_exit_net, + .id = &tipc_net_id, + .size = sizeof(struct tipc_net), +}; + +static struct pernet_operations tipc_topsrv_net_ops = { + .init = tipc_topsrv_init_net, + .exit = tipc_topsrv_exit_net, +}; + +static int __init tipc_init(void) +{ + int err; + + pr_info("Activated (version " TIPC_MOD_VER ")\n"); + + sysctl_tipc_rmem[0] = RCVBUF_MIN; + sysctl_tipc_rmem[1] = RCVBUF_DEF; + sysctl_tipc_rmem[2] = RCVBUF_MAX; + + err = tipc_register_sysctl(); + if (err) + goto out_sysctl; + + err = register_pernet_device(&tipc_net_ops); + if (err) + goto out_pernet; + + err = tipc_socket_init(); + if (err) + goto out_socket; + + err = register_pernet_device(&tipc_topsrv_net_ops); + if (err) + goto out_pernet_topsrv; + + err = register_pernet_subsys(&tipc_pernet_pre_exit_ops); + if (err) + goto out_register_pernet_subsys; + + err = tipc_bearer_setup(); + if (err) + goto out_bearer; + + err = tipc_netlink_start(); + if (err) + goto out_netlink; + + err = tipc_netlink_compat_start(); + if (err) + goto out_netlink_compat; + + pr_info("Started in single node mode\n"); + return 0; + +out_netlink_compat: + tipc_netlink_stop(); +out_netlink: + tipc_bearer_cleanup(); +out_bearer: + unregister_pernet_subsys(&tipc_pernet_pre_exit_ops); +out_register_pernet_subsys: + unregister_pernet_device(&tipc_topsrv_net_ops); +out_pernet_topsrv: + tipc_socket_stop(); +out_socket: + unregister_pernet_device(&tipc_net_ops); +out_pernet: + tipc_unregister_sysctl(); +out_sysctl: + pr_err("Unable to start in single node mode\n"); + return err; +} + +static void __exit tipc_exit(void) +{ + tipc_netlink_compat_stop(); + tipc_netlink_stop(); + tipc_bearer_cleanup(); + unregister_pernet_subsys(&tipc_pernet_pre_exit_ops); + unregister_pernet_device(&tipc_topsrv_net_ops); + tipc_socket_stop(); + unregister_pernet_device(&tipc_net_ops); + tipc_unregister_sysctl(); + + 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); |