1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
2 | /* |
3 | * nodemanager.h |
4 | * |
5 | * Function prototypes |
6 | * |
7 | * Copyright (C) 2004 Oracle. All rights reserved. |
8 | */ |
9 | |
10 | #ifndef O2CLUSTER_NODEMANAGER_H |
11 | #define O2CLUSTER_NODEMANAGER_H |
12 | |
13 | #include "ocfs2_nodemanager.h" |
14 | |
15 | /* This totally doesn't belong here. */ |
16 | #include <linux/configfs.h> |
17 | #include <linux/rbtree.h> |
18 | |
19 | enum o2nm_fence_method { |
20 | O2NM_FENCE_RESET = 0, |
21 | O2NM_FENCE_PANIC, |
22 | O2NM_FENCE_METHODS, /* Number of fence methods */ |
23 | }; |
24 | |
25 | struct o2nm_node { |
26 | spinlock_t nd_lock; |
27 | struct config_item nd_item; |
28 | char nd_name[O2NM_MAX_NAME_LEN+1]; /* replace? */ |
29 | __u8 nd_num; |
30 | /* only one address per node, as attributes, for now. */ |
31 | __be32 nd_ipv4_address; |
32 | __be16 nd_ipv4_port; |
33 | struct rb_node nd_ip_node; |
34 | /* there can be only one local node for now */ |
35 | int nd_local; |
36 | |
37 | unsigned long nd_set_attributes; |
38 | }; |
39 | |
40 | struct o2nm_cluster { |
41 | struct config_group cl_group; |
42 | unsigned cl_has_local:1; |
43 | u8 cl_local_node; |
44 | rwlock_t cl_nodes_lock; |
45 | struct o2nm_node *cl_nodes[O2NM_MAX_NODES]; |
46 | struct rb_root cl_node_ip_tree; |
47 | unsigned int cl_idle_timeout_ms; |
48 | unsigned int cl_keepalive_delay_ms; |
49 | unsigned int cl_reconnect_delay_ms; |
50 | enum o2nm_fence_method cl_fence_method; |
51 | |
52 | /* this bitmap is part of a hack for disk bitmap.. will go eventually. - zab */ |
53 | unsigned long cl_nodes_bitmap[BITS_TO_LONGS(O2NM_MAX_NODES)]; |
54 | }; |
55 | |
56 | extern struct o2nm_cluster *o2nm_single_cluster; |
57 | |
58 | u8 o2nm_this_node(void); |
59 | |
60 | int o2nm_configured_node_map(unsigned long *map, unsigned bytes); |
61 | struct o2nm_node *o2nm_get_node_by_num(u8 node_num); |
62 | struct o2nm_node *o2nm_get_node_by_ip(__be32 addr); |
63 | void o2nm_node_get(struct o2nm_node *node); |
64 | void o2nm_node_put(struct o2nm_node *node); |
65 | |
66 | int o2nm_depend_item(struct config_item *item); |
67 | void o2nm_undepend_item(struct config_item *item); |
68 | int o2nm_depend_this_node(void); |
69 | void o2nm_undepend_this_node(void); |
70 | |
71 | #endif /* O2CLUSTER_NODEMANAGER_H */ |
72 | |