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name_table.h
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name_table.h
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/*
* net/tipc/name_table.h: Include file for TIPC name table code
*
* Copyright (c) 2000-2006, 2014-2015, 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;
/*
* 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
* @node: network address of publishing port's node
* @ref: publishing port
* @key: publication key
* @nodesub_list: subscription to "node down" event (off-node publication only)
* @local_list: adjacent entries in list of publications made by this node
* @pport_list: adjacent entries in list of publications made by this port
* @node_list: adjacent matching name seq publications with >= node scope
* @cluster_list: adjacent matching name seq publications with >= cluster scope
* @zone_list: adjacent matching name seq publications with >= zone scope
* @rcu: RCU callback head used for deferred freeing
*
* Note that the node list, cluster list, and zone list are circular lists.
*/
struct publication {
u32 type;
u32 lower;
u32 upper;
u32 scope;
u32 node;
u32 ref;
u32 key;
struct list_head nodesub_list;
struct list_head local_list;
struct list_head pport_list;
struct list_head node_list;
struct list_head cluster_list;
struct list_head zone_list;
struct rcu_head rcu;
};
/**
* struct name_table - table containing all existing port name publications
* @seq_hlist: name sequence hash lists
* @publ_list: pulication lists
* @local_publ_count: number of publications issued by this node
*/
struct name_table {
struct hlist_head seq_hlist[TIPC_NAMETBL_SIZE];
struct list_head publ_list[TIPC_PUBL_SCOPE_NUM];
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);
int tipc_nametbl_mc_translate(struct net *net, u32 type, u32 lower, u32 upper,
u32 limit, struct list_head *dports);
void tipc_nametbl_lookup_dst_nodes(struct net *net, u32 type, u32 lower,
u32 upper, u32 domain,
struct tipc_nlist *nodes);
struct publication *tipc_nametbl_publish(struct net *net, u32 type, u32 lower,
u32 upper, u32 scope, u32 port_ref,
u32 key);
int tipc_nametbl_withdraw(struct net *net, u32 type, u32 lower, u32 ref,
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 node, u32 ref,
u32 key);
void 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 u32_item {
struct list_head list;
u32 value;
};
bool u32_push(struct list_head *l, u32 value);
u32 u32_pop(struct list_head *l);
bool u32_find(struct list_head *l, u32 value);
bool u32_del(struct list_head *l, u32 value);
void u32_list_purge(struct list_head *l);
int u32_list_len(struct list_head *l);
#endif