Something went wrong. Try again.
Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
Something went wrong. Try again.
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235/* * 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>#include <linux/wait_bit.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;
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 wait_var_event(&tn->wq_count, atomic_read(&tn->wq_count) == 0);}
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();
/* TODO: Wait for all timers that called call_rcu() to finish before * calling rcu_barrier(). */ rcu_barrier();
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);