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37922ea4a3
With the new RB tree structure for service ranges it becomes possible to solve an old problem; - we can now allow overlapping service ranges in the table. When inserting a new service range to the tree, we use 'lower' as primary key, and when necessary 'upper' as secondary key. Since there may now be multiple service ranges matching an indicated 'lower' value, we must also add the 'upper' value to the functions used for removing publications, so that the correct, corresponding range item can be found. These changes guarantee that a well-formed publication/withdrawal item from a peer node never will be rejected, and make it possible to eliminate the problematic backlog functionality we currently have for handling such cases. Signed-off-by: Jon Maloy <jon.maloy@ericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
78 lines
3.1 KiB
C
78 lines
3.1 KiB
C
/*
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* net/tipc/name_distr.h: Include file for TIPC name distribution code
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*
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* Copyright (c) 2000-2006, Ericsson AB
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* Copyright (c) 2005, 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_DISTR_H
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#define _TIPC_NAME_DISTR_H
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#include "name_table.h"
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#define ITEM_SIZE sizeof(struct distr_item)
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/**
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* struct distr_item - publication info distributed to other nodes
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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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* @ref: publishing port reference
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* @key: publication key
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*
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* ===> All fields are stored in network byte order. <===
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*
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* First 3 fields identify (name or) name sequence being published.
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* Reference field uniquely identifies port that published name sequence.
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* Key field uniquely identifies publication, in the event a port has
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* multiple publications of the same name sequence.
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*
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* Note: There is no field that identifies the publishing node because it is
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* the same for all items contained within a publication message.
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*/
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struct distr_item {
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__be32 type;
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__be32 lower;
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__be32 upper;
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__be32 port;
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__be32 key;
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};
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struct sk_buff *tipc_named_publish(struct net *net, struct publication *publ);
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struct sk_buff *tipc_named_withdraw(struct net *net, struct publication *publ);
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void tipc_named_node_up(struct net *net, u32 dnode);
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void tipc_named_rcv(struct net *net, struct sk_buff_head *msg_queue);
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void tipc_named_reinit(struct net *net);
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void tipc_publ_notify(struct net *net, struct list_head *nsub_list, u32 addr);
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#endif
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