| xj | b04a402 | 2021-11-25 15:01:52 +0800 | [diff] [blame] | 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 | |
| 81 | extern const int tipc_max_domain_size; |
| 82 | #endif |