Adding upstream version 5.10.209.upstream/5.10.209upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

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);