1 /* 2 * net/tipc/monitor.h 3 * 4 * Copyright (c) 2015, Ericsson AB 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions are met: 9 * 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the names of the copyright holders nor the names of its 16 * contributors may be used to endorse or promote products derived from 17 * this software without specific prior written permission. 18 * 19 * Alternatively, this software may be distributed under the terms of the 20 * GNU General Public License ("GPL") version 2 as published by the Free 21 * Software Foundation. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 24 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 27 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 28 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 29 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 30 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 31 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 32 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 33 * POSSIBILITY OF SUCH DAMAGE. 34 */ 35 36 #ifndef _TIPC_MONITOR_H 37 #define _TIPC_MONITOR_H 38 39 #include "netlink.h" 40 41 /* struct tipc_mon_state: link instance's cache of monitor list and domain state 42 * @list_gen: current generation of this node's monitor list 43 * @gen: current generation of this node's local domain 44 * @peer_gen: most recent domain generation received from peer 45 * @acked_gen: most recent generation of self's domain acked by peer 46 * @monitoring: this peer endpoint should continuously monitored 47 * @probing: peer endpoint should be temporarily probed for potential loss 48 * @synched: domain record's generation has been synched with peer after reset 49 */ 50 struct tipc_mon_state { 51 u16 list_gen; 52 u16 peer_gen; 53 u16 acked_gen; 54 bool monitoring :1; 55 bool probing :1; 56 bool reset :1; 57 bool synched :1; 58 }; 59 60 int tipc_mon_create(struct net *net, int bearer_id); 61 void tipc_mon_delete(struct net *net, int bearer_id); 62 63 void tipc_mon_peer_up(struct net *net, u32 addr, int bearer_id); 64 void tipc_mon_peer_down(struct net *net, u32 addr, int bearer_id); 65 void tipc_mon_prep(struct net *net, void *data, int *dlen, 66 struct tipc_mon_state *state, int bearer_id); 67 void tipc_mon_rcv(struct net *net, void *data, u16 dlen, u32 addr, 68 struct tipc_mon_state *state, int bearer_id); 69 void tipc_mon_get_state(struct net *net, u32 addr, 70 struct tipc_mon_state *state, 71 int bearer_id); 72 void tipc_mon_remove_peer(struct net *net, u32 addr, int bearer_id); 73 74 int tipc_nl_monitor_set_threshold(struct net *net, u32 cluster_size); 75 int tipc_nl_monitor_get_threshold(struct net *net); 76 int __tipc_nl_add_monitor(struct net *net, struct tipc_nl_msg *msg, 77 u32 bearer_id); 78 int tipc_nl_add_monitor_peer(struct net *net, struct tipc_nl_msg *msg, 79 u32 bearer_id, u32 *prev_node); 80 void tipc_mon_reinit_self(struct net *net); 81 82 extern const int tipc_max_domain_size; 83 #endif 84