Orange Pi5 kernel

Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards

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/*
* 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->final_work.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);
<------>/* Make sure the tipc_net_finalize_work() finished */
<------>cancel_work_sync(&tn->final_work.work);
<------>tipc_net_stop(net);
<------>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);