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, 2012-2013, 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 40 #include "server.h" 41 42 #define TIPC_MAX_SUBSCRIPTIONS 65535 43 #define TIPC_MAX_PUBLICATIONS 65535 44 45 struct tipc_subscription; 46 struct tipc_subscriber; 47 48 /** 49 * struct tipc_subscription - TIPC network topology subscription object 50 * @subscriber: pointer to its subscriber 51 * @seq: name sequence associated with subscription 52 * @net: point to network namespace 53 * @timer: timer governing subscription duration (optional) 54 * @nameseq_list: adjacent subscriptions in name sequence's subscription list 55 * @subscrp_list: adjacent subscriptions in subscriber's subscription list 56 * @swap: indicates if subscriber uses opposite endianness in its messages 57 * @evt: template for events generated by subscription 58 */ 59 struct tipc_subscription { 60 struct kref kref; 61 struct tipc_subscriber *subscriber; 62 struct net *net; 63 struct timer_list timer; 64 struct list_head nameseq_list; 65 struct list_head subscrp_list; 66 int swap; 67 struct tipc_event evt; 68 }; 69 70 int tipc_subscrp_check_overlap(struct tipc_name_seq *seq, u32 found_lower, 71 u32 found_upper); 72 void tipc_subscrp_report_overlap(struct tipc_subscription *sub, 73 u32 found_lower, u32 found_upper, u32 event, 74 u32 port_ref, u32 node, int must); 75 void tipc_subscrp_convert_seq(struct tipc_name_seq *in, int swap, 76 struct tipc_name_seq *out); 77 u32 tipc_subscrp_convert_seq_type(u32 type, int swap); 78 int tipc_topsrv_start(struct net *net); 79 void tipc_topsrv_stop(struct net *net); 80 81 void tipc_subscrp_put(struct tipc_subscription *subscription); 82 void tipc_subscrp_get(struct tipc_subscription *subscription); 83 84 #endif 85