forked from Minki/linux
f6f0a4d2d0
Modifies the main circular linked lists of publications used in TIPC's name table to use the standard kernel linked list type. This change simplifies the deletion of an existing publication by eliminating the need to search up to three lists to locate the publication. The use of standard list routines also helps improve the readability of the name table code by make it clearer what each list operation being performed is actually doing. Signed-off-by: Allan Stephens <allan.stephens@windriver.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
109 lines
4.1 KiB
C
109 lines
4.1 KiB
C
/*
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* net/tipc/name_table.h: Include file for TIPC name table code
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*
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* Copyright (c) 2000-2006, Ericsson AB
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* Copyright (c) 2004-2005, 2010-2011, Wind River Systems
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the names of the copyright holders nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* Alternatively, this software may be distributed under the terms of the
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* GNU General Public License ("GPL") version 2 as published by the Free
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* Software Foundation.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _TIPC_NAME_TABLE_H
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#define _TIPC_NAME_TABLE_H
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#include "node_subscr.h"
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struct subscription;
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struct port_list;
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/*
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* TIPC name types reserved for internal TIPC use (both current and planned)
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*/
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#define TIPC_ZM_SRV 3 /* zone master service name type */
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/**
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* struct publication - info about a published (name or) name sequence
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* @type: name sequence type
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* @lower: name sequence lower bound
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* @upper: name sequence upper bound
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* @scope: scope of publication
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* @node: network address of publishing port's node
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* @ref: publishing port
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* @key: publication key
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* @subscr: subscription to "node down" event (for off-node publications only)
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* @local_list: adjacent entries in list of publications made by this node
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* @pport_list: adjacent entries in list of publications made by this port
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* @node_list: adjacent matching name seq publications with >= node scope
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* @cluster_list: adjacent matching name seq publications with >= cluster scope
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* @zone_list: adjacent matching name seq publications with >= zone scope
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*
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* Note that the node list, cluster list, and zone list are circular lists.
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*/
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struct publication {
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u32 type;
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u32 lower;
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u32 upper;
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u32 scope;
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u32 node;
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u32 ref;
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u32 key;
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struct tipc_node_subscr subscr;
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struct list_head local_list;
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struct list_head pport_list;
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struct list_head node_list;
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struct list_head cluster_list;
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struct list_head zone_list;
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};
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extern rwlock_t tipc_nametbl_lock;
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struct sk_buff *tipc_nametbl_get(const void *req_tlv_area, int req_tlv_space);
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u32 tipc_nametbl_translate(u32 type, u32 instance, u32 *node);
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int tipc_nametbl_mc_translate(u32 type, u32 lower, u32 upper, u32 limit,
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struct port_list *dports);
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int tipc_nametbl_publish_rsv(u32 ref, unsigned int scope,
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struct tipc_name_seq const *seq);
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struct publication *tipc_nametbl_publish(u32 type, u32 lower, u32 upper,
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u32 scope, u32 port_ref, u32 key);
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int tipc_nametbl_withdraw(u32 type, u32 lower, u32 ref, u32 key);
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struct publication *tipc_nametbl_insert_publ(u32 type, u32 lower, u32 upper,
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u32 scope, u32 node, u32 ref, u32 key);
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struct publication *tipc_nametbl_remove_publ(u32 type, u32 lower,
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u32 node, u32 ref, u32 key);
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void tipc_nametbl_subscribe(struct subscription *s);
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void tipc_nametbl_unsubscribe(struct subscription *s);
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int tipc_nametbl_init(void);
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void tipc_nametbl_stop(void);
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#endif
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