Adding upstream version 4.19.249.upstream/4.19.249

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

1 files changed, 148 insertions, 0 deletions

diff --git a/net/tipc/name_table.h b/net/tipc/name_table.h
new file mode 100644
index 000000000..f79066334
--- /dev/null
+++ b/net/tipc/name_table.h
@@ -0,0 +1,148 @@
+/*
+ * net/tipc/name_table.h: Include file for TIPC name table code
+ *
+ * Copyright (c) 2000-2006, 2014-2018, Ericsson AB
+ * Copyright (c) 2004-2005, 2010-2011, 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.
+ */
+
+#ifndef _TIPC_NAME_TABLE_H
+#define _TIPC_NAME_TABLE_H
+
+struct tipc_subscription;
+struct tipc_plist;
+struct tipc_nlist;
+struct tipc_group;
+
+/*
+ * TIPC name types reserved for internal TIPC use (both current and planned)
+ */
+#define TIPC_ZM_SRV		3	/* zone master service name type */
+#define TIPC_PUBL_SCOPE_NUM	(TIPC_NODE_SCOPE + 1)
+#define TIPC_NAMETBL_SIZE	1024	/* must be a power of 2 */
+
+/**
+ * struct publication - info about a published (name or) name sequence
+ * @type: name sequence type
+ * @lower: name sequence lower bound
+ * @upper: name sequence upper bound
+ * @scope: scope of publication, TIPC_NODE_SCOPE or TIPC_CLUSTER_SCOPE
+ * @node: network address of publishing socket's node
+ * @port: publishing port
+ * @key: publication key, unique across the cluster
+ * @binding_node: all publications from the same node which bound this one
+ * - Remote publications: in node->publ_list
+ *   Used by node/name distr to withdraw publications when node is lost
+ * - Local/node scope publications: in name_table->node_scope list
+ * - Local/cluster scope publications: in name_table->cluster_scope list
+ * @binding_sock: all publications from the same socket which bound this one
+ *   Used by socket to withdraw publications when socket is unbound/released
+ * @local_publ: list of identical publications made from this node
+ *   Used by closest_first and multicast receive lookup algorithms
+ * @all_publ: all publications identical to this one, whatever node and scope
+ *   Used by round-robin lookup algorithm
+ * @rcu: RCU callback head used for deferred freeing
+ */
+struct publication {
+	u32 type;
+	u32 lower;
+	u32 upper;
+	u32 scope;
+	u32 node;
+	u32 port;
+	u32 key;
+	struct list_head binding_node;
+	struct list_head binding_sock;
+	struct list_head local_publ;
+	struct list_head all_publ;
+	struct rcu_head rcu;
+};
+
+/**
+ * struct name_table - table containing all existing port name publications
+ * @seq_hlist: name sequence hash lists
+ * @node_scope: all local publications with node scope
+ *               - used by name_distr during re-init of name table
+ * @cluster_scope: all local publications with cluster scope
+ *               - used by name_distr to send bulk updates to new nodes
+ *               - used by name_distr during re-init of name table
+ * @local_publ_count: number of publications issued by this node
+ */
+struct name_table {
+	struct hlist_head services[TIPC_NAMETBL_SIZE];
+	struct list_head node_scope;
+	struct list_head cluster_scope;
+	rwlock_t cluster_scope_lock;
+	u32 local_publ_count;
+};
+
+int tipc_nl_name_table_dump(struct sk_buff *skb, struct netlink_callback *cb);
+
+u32 tipc_nametbl_translate(struct net *net, u32 type, u32 instance, u32 *node);
+void tipc_nametbl_mc_lookup(struct net *net, u32 type, u32 lower, u32 upper,
+			    u32 scope, bool exact, struct list_head *dports);
+void tipc_nametbl_build_group(struct net *net, struct tipc_group *grp,
+			      u32 type, u32 domain);
+void tipc_nametbl_lookup_dst_nodes(struct net *net, u32 type, u32 lower,
+				   u32 upper, struct tipc_nlist *nodes);
+bool tipc_nametbl_lookup(struct net *net, u32 type, u32 instance, u32 domain,
+			 struct list_head *dsts, int *dstcnt, u32 exclude,
+			 bool all);
+struct publication *tipc_nametbl_publish(struct net *net, u32 type, u32 lower,
+					 u32 upper, u32 scope, u32 port,
+					 u32 key);
+int tipc_nametbl_withdraw(struct net *net, u32 type, u32 lower, u32 upper,
+			  u32 key);
+struct publication *tipc_nametbl_insert_publ(struct net *net, u32 type,
+					     u32 lower, u32 upper, u32 scope,
+					     u32 node, u32 ref, u32 key);
+struct publication *tipc_nametbl_remove_publ(struct net *net, u32 type,
+					     u32 lower, u32 upper,
+					     u32 node, u32 key);
+bool tipc_nametbl_subscribe(struct tipc_subscription *s);
+void tipc_nametbl_unsubscribe(struct tipc_subscription *s);
+int tipc_nametbl_init(struct net *net);
+void tipc_nametbl_stop(struct net *net);
+
+struct tipc_dest {
+	struct list_head list;
+	u32 port;
+	u32 node;
+};
+
+struct tipc_dest *tipc_dest_find(struct list_head *l, u32 node, u32 port);
+bool tipc_dest_push(struct list_head *l, u32 node, u32 port);
+bool tipc_dest_pop(struct list_head *l, u32 *node, u32 *port);
+bool tipc_dest_del(struct list_head *l, u32 node, u32 port);
+void tipc_dest_list_purge(struct list_head *l);
+int tipc_dest_list_len(struct list_head *l);
+
+#endif