1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
2 | /* |
3 | * heartbeat.h |
4 | * |
5 | * Function prototypes |
6 | * |
7 | * Copyright (C) 2004 Oracle. All rights reserved. |
8 | */ |
9 | |
10 | #ifndef O2CLUSTER_HEARTBEAT_H |
11 | #define O2CLUSTER_HEARTBEAT_H |
12 | |
13 | #include "ocfs2_heartbeat.h" |
14 | |
15 | #define O2HB_REGION_TIMEOUT_MS 2000 |
16 | |
17 | #define O2HB_MAX_REGION_NAME_LEN 32 |
18 | |
19 | /* number of changes to be seen as live */ |
20 | #define O2HB_LIVE_THRESHOLD 2 |
21 | /* number of equal samples to be seen as dead */ |
22 | extern unsigned int o2hb_dead_threshold; |
23 | #define O2HB_DEFAULT_DEAD_THRESHOLD 31 |
24 | /* Otherwise MAX_WRITE_TIMEOUT will be zero... */ |
25 | #define O2HB_MIN_DEAD_THRESHOLD 2 |
26 | #define O2HB_MAX_WRITE_TIMEOUT_MS (O2HB_REGION_TIMEOUT_MS * (o2hb_dead_threshold - 1)) |
27 | |
28 | #define O2HB_CB_MAGIC 0x51d1e4ec |
29 | |
30 | /* callback stuff */ |
31 | enum o2hb_callback_type { |
32 | O2HB_NODE_DOWN_CB = 0, |
33 | O2HB_NODE_UP_CB, |
34 | O2HB_NUM_CB |
35 | }; |
36 | |
37 | struct o2nm_node; |
38 | typedef void (o2hb_cb_func)(struct o2nm_node *, int, void *); |
39 | |
40 | struct o2hb_callback_func { |
41 | u32 hc_magic; |
42 | struct list_head hc_item; |
43 | o2hb_cb_func *hc_func; |
44 | void *hc_data; |
45 | int hc_priority; |
46 | enum o2hb_callback_type hc_type; |
47 | }; |
48 | |
49 | struct config_group *o2hb_alloc_hb_set(void); |
50 | void o2hb_free_hb_set(struct config_group *group); |
51 | |
52 | void o2hb_setup_callback(struct o2hb_callback_func *hc, |
53 | enum o2hb_callback_type type, |
54 | o2hb_cb_func *func, |
55 | void *data, |
56 | int priority); |
57 | int o2hb_register_callback(const char *region_uuid, |
58 | struct o2hb_callback_func *hc); |
59 | void o2hb_unregister_callback(const char *region_uuid, |
60 | struct o2hb_callback_func *hc); |
61 | void o2hb_fill_node_map(unsigned long *map, |
62 | unsigned int bits); |
63 | void o2hb_exit(void); |
64 | void o2hb_init(void); |
65 | int o2hb_check_node_heartbeating_no_sem(u8 node_num); |
66 | int o2hb_check_node_heartbeating_from_callback(u8 node_num); |
67 | void o2hb_stop_all_regions(void); |
68 | int o2hb_get_all_regions(char *region_uuids, u8 numregions); |
69 | int o2hb_global_heartbeat_active(void); |
70 | |
71 | #endif /* O2CLUSTER_HEARTBEAT_H */ |
72 | |