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 | |