1/* 2 * net/tipc/subscr.h: Include file for TIPC network topology service 3 * 4 * Copyright (c) 2003-2006, Ericsson AB 5 * Copyright (c) 2005-2007, Wind River Systems 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions are met: 10 * 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. Neither the names of the copyright holders nor the names of its 17 * contributors may be used to endorse or promote products derived from 18 * this software without specific prior written permission. 19 * 20 * Alternatively, this software may be distributed under the terms of the 21 * GNU General Public License ("GPL") version 2 as published by the Free 22 * Software Foundation. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 25 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 28 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 29 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 30 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 31 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 32 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 33 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 34 * POSSIBILITY OF SUCH DAMAGE. 35 */ 36 37#ifndef _TIPC_SUBSCR_H 38#define _TIPC_SUBSCR_H 39 40struct subscription; 41 42typedef void (*tipc_subscr_event) (struct subscription *sub, 43 u32 found_lower, u32 found_upper, 44 u32 event, u32 port_ref, u32 node); 45 46/** 47 * struct subscription - TIPC network topology subscription object 48 * @seq: name sequence associated with subscription 49 * @timeout: duration of subscription (in ms) 50 * @filter: event filtering to be done for subscription 51 * @event_cb: routine invoked when a subscription event is detected 52 * @timer: timer governing subscription duration (optional) 53 * @nameseq_list: adjacent subscriptions in name sequence's subscription list 54 * @subscription_list: adjacent subscriptions in subscriber's subscription list 55 * @server_ref: object reference of server port associated with subscription 56 * @swap: indicates if subscriber uses opposite endianness in its messages 57 * @evt: template for events generated by subscription 58 */ 59 60struct subscription { 61 struct tipc_name_seq seq; 62 u32 timeout; 63 u32 filter; 64 tipc_subscr_event event_cb; 65 struct timer_list timer; 66 struct list_head nameseq_list; 67 struct list_head subscription_list; 68 u32 server_ref; 69 int swap; 70 struct tipc_event evt; 71}; 72 73int tipc_subscr_overlap(struct subscription *sub, 74 u32 found_lower, 75 u32 found_upper); 76 77void tipc_subscr_report_overlap(struct subscription *sub, 78 u32 found_lower, 79 u32 found_upper, 80 u32 event, 81 u32 port_ref, 82 u32 node, 83 int must_report); 84 85int tipc_subscr_start(void); 86 87void tipc_subscr_stop(void); 88 89 90#endif 91