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e15f880409
This patch enables TIPC's topology server code to do customized overlap detection handling on a per-subscription basis. (This capability is needed to support the upcoming introduction of multi-cluster TIPC networks.) Signed-off-by: Allan Stephens <allan.stephens@windriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
89 lines
3.3 KiB
C
89 lines
3.3 KiB
C
/*
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* net/tipc/subscr.h: Include file for TIPC subscription service
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*
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* Copyright (c) 2003-2006, 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_SUBSCR_H
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#define _TIPC_SUBSCR_H
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struct subscription;
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typedef void (*tipc_subscr_event) (struct subscription *sub,
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u32 found_lower, u32 found_upper,
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u32 event, u32 port_ref, u32 node);
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/**
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* struct subscription - TIPC network topology subscription object
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* @seq: name sequence associated with subscription
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* @timeout: duration of subscription (in ms)
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* @filter: event filtering to be done for subscription
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* @event_cb: routine invoked when a subscription event is detected
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* @evt: template for events generated by subscription
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* @subscription_list: adjacent subscriptions in subscriber's subscription list
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* @nameseq_list: adjacent subscriptions in name sequence's subscription list
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* @timer_ref: reference to timer governing subscription duration (may be NULL)
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* @owner: pointer to subscriber object associated with this subscription
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*/
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struct subscription {
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struct tipc_name_seq seq;
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u32 timeout;
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u32 filter;
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tipc_subscr_event event_cb;
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struct tipc_event evt;
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struct list_head subscription_list;
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struct list_head nameseq_list;
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struct timer_list timer;
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struct subscriber *owner;
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};
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int tipc_subscr_overlap(struct subscription * sub,
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u32 found_lower,
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u32 found_upper);
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void tipc_subscr_report_overlap(struct subscription * sub,
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u32 found_lower,
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u32 found_upper,
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u32 event,
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u32 port_ref,
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u32 node,
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int must_report);
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int tipc_subscr_start(void);
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void tipc_subscr_stop(void);
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#endif
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