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1/* SPDX-License-Identifier: GPL-2.0-or-later */
2/* -*- mode: c; c-basic-offset: 8; -*-
3 * vim: noexpandtab sw=8 ts=8 sts=0:
4 *
5 * heartbeat.h
6 *
7 * Function prototypes
8 *
9 * Copyright (C) 2004 Oracle. All rights reserved.
10 */
11
12#ifndef O2CLUSTER_HEARTBEAT_H
13#define O2CLUSTER_HEARTBEAT_H
14
15#include "ocfs2_heartbeat.h"
16
17#define O2HB_REGION_TIMEOUT_MS 2000
18
19#define O2HB_MAX_REGION_NAME_LEN 32
20
21/* number of changes to be seen as live */
22#define O2HB_LIVE_THRESHOLD 2
23/* number of equal samples to be seen as dead */
24extern unsigned int o2hb_dead_threshold;
25#define O2HB_DEFAULT_DEAD_THRESHOLD 31
26/* Otherwise MAX_WRITE_TIMEOUT will be zero... */
27#define O2HB_MIN_DEAD_THRESHOLD 2
28#define O2HB_MAX_WRITE_TIMEOUT_MS (O2HB_REGION_TIMEOUT_MS * (o2hb_dead_threshold - 1))
29
30#define O2HB_CB_MAGIC 0x51d1e4ec
31
32/* callback stuff */
33enum o2hb_callback_type {
34 O2HB_NODE_DOWN_CB = 0,
35 O2HB_NODE_UP_CB,
36 O2HB_NUM_CB
37};
38
39struct o2nm_node;
40typedef void (o2hb_cb_func)(struct o2nm_node *, int, void *);
41
42struct o2hb_callback_func {
43 u32 hc_magic;
44 struct list_head hc_item;
45 o2hb_cb_func *hc_func;
46 void *hc_data;
47 int hc_priority;
48 enum o2hb_callback_type hc_type;
49};
50
51struct config_group *o2hb_alloc_hb_set(void);
52void o2hb_free_hb_set(struct config_group *group);
53
54void o2hb_setup_callback(struct o2hb_callback_func *hc,
55 enum o2hb_callback_type type,
56 o2hb_cb_func *func,
57 void *data,
58 int priority);
59int o2hb_register_callback(const char *region_uuid,
60 struct o2hb_callback_func *hc);
61void o2hb_unregister_callback(const char *region_uuid,
62 struct o2hb_callback_func *hc);
63void o2hb_fill_node_map(unsigned long *map,
64 unsigned bytes);
65void o2hb_exit(void);
66void o2hb_init(void);
67int o2hb_check_node_heartbeating_no_sem(u8 node_num);
68int o2hb_check_node_heartbeating_from_callback(u8 node_num);
69void o2hb_stop_all_regions(void);
70int o2hb_get_all_regions(char *region_uuids, u8 numregions);
71int o2hb_global_heartbeat_active(void);
72
73#endif /* O2CLUSTER_HEARTBEAT_H */
1/* -*- mode: c; c-basic-offset: 8; -*-
2 * vim: noexpandtab sw=8 ts=8 sts=0:
3 *
4 * heartbeat.h
5 *
6 * Function prototypes
7 *
8 * Copyright (C) 2004 Oracle. All rights reserved.
9 *
10 * This program is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU General Public
12 * License as published by the Free Software Foundation; either
13 * version 2 of the License, or (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public
21 * License along with this program; if not, write to the
22 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
23 * Boston, MA 021110-1307, USA.
24 *
25 */
26
27#ifndef O2CLUSTER_HEARTBEAT_H
28#define O2CLUSTER_HEARTBEAT_H
29
30#include "ocfs2_heartbeat.h"
31
32#define O2HB_REGION_TIMEOUT_MS 2000
33
34#define O2HB_MAX_REGION_NAME_LEN 32
35
36/* number of changes to be seen as live */
37#define O2HB_LIVE_THRESHOLD 2
38/* number of equal samples to be seen as dead */
39extern unsigned int o2hb_dead_threshold;
40#define O2HB_DEFAULT_DEAD_THRESHOLD 31
41/* Otherwise MAX_WRITE_TIMEOUT will be zero... */
42#define O2HB_MIN_DEAD_THRESHOLD 2
43#define O2HB_MAX_WRITE_TIMEOUT_MS (O2HB_REGION_TIMEOUT_MS * (o2hb_dead_threshold - 1))
44
45#define O2HB_CB_MAGIC 0x51d1e4ec
46
47/* callback stuff */
48enum o2hb_callback_type {
49 O2HB_NODE_DOWN_CB = 0,
50 O2HB_NODE_UP_CB,
51 O2HB_NUM_CB
52};
53
54struct o2nm_node;
55typedef void (o2hb_cb_func)(struct o2nm_node *, int, void *);
56
57struct o2hb_callback_func {
58 u32 hc_magic;
59 struct list_head hc_item;
60 o2hb_cb_func *hc_func;
61 void *hc_data;
62 int hc_priority;
63 enum o2hb_callback_type hc_type;
64};
65
66struct config_group *o2hb_alloc_hb_set(void);
67void o2hb_free_hb_set(struct config_group *group);
68
69void o2hb_setup_callback(struct o2hb_callback_func *hc,
70 enum o2hb_callback_type type,
71 o2hb_cb_func *func,
72 void *data,
73 int priority);
74int o2hb_register_callback(const char *region_uuid,
75 struct o2hb_callback_func *hc);
76void o2hb_unregister_callback(const char *region_uuid,
77 struct o2hb_callback_func *hc);
78void o2hb_fill_node_map(unsigned long *map,
79 unsigned bytes);
80void o2hb_exit(void);
81int o2hb_init(void);
82int o2hb_check_node_heartbeating(u8 node_num);
83int o2hb_check_node_heartbeating_no_sem(u8 node_num);
84int o2hb_check_node_heartbeating_from_callback(u8 node_num);
85int o2hb_check_local_node_heartbeating(void);
86void o2hb_stop_all_regions(void);
87int o2hb_get_all_regions(char *region_uuids, u8 numregions);
88int o2hb_global_heartbeat_active(void);
89
90#endif /* O2CLUSTER_HEARTBEAT_H */