1/* -*- mode: c; c-basic-offset: 8; -*-
2 * vim: noexpandtab sw=8 ts=8 sts=0:
3 *
4 * nodemanager.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_NODEMANAGER_H
28#define O2CLUSTER_NODEMANAGER_H
29
30#include "ocfs2_nodemanager.h"
31
32/* This totally doesn't belong here. */
33#include <linux/configfs.h>
34#include <linux/rbtree.h>
35
36#define FS_OCFS2_NM		1
37
38const char *o2nm_get_hb_ctl_path(void);
39
40struct o2nm_node {
41	spinlock_t		nd_lock;
42	struct config_item	nd_item;
43	char			nd_name[O2NM_MAX_NAME_LEN+1]; /* replace? */
44	__u8			nd_num;
45	/* only one address per node, as attributes, for now. */
46	__be32			nd_ipv4_address;
47	__be16			nd_ipv4_port;
48	struct rb_node		nd_ip_node;
49	/* there can be only one local node for now */
50	int			nd_local;
51
52	unsigned long		nd_set_attributes;
53};
54
55struct o2nm_cluster {
56	struct config_group	cl_group;
57	unsigned		cl_has_local:1;
58	u8			cl_local_node;
59	rwlock_t		cl_nodes_lock;
60	struct o2nm_node  	*cl_nodes[O2NM_MAX_NODES];
61	struct rb_root		cl_node_ip_tree;
62	unsigned int		cl_idle_timeout_ms;
63	unsigned int		cl_keepalive_delay_ms;
64	unsigned int		cl_reconnect_delay_ms;
65
66	/* this bitmap is part of a hack for disk bitmap.. will go eventually. - zab */
67	unsigned long	cl_nodes_bitmap[BITS_TO_LONGS(O2NM_MAX_NODES)];
68};
69
70extern struct o2nm_cluster *o2nm_single_cluster;
71
72u8 o2nm_this_node(void);
73
74int o2nm_configured_node_map(unsigned long *map, unsigned bytes);
75struct o2nm_node *o2nm_get_node_by_num(u8 node_num);
76struct o2nm_node *o2nm_get_node_by_ip(__be32 addr);
77void o2nm_node_get(struct o2nm_node *node);
78void o2nm_node_put(struct o2nm_node *node);
79
80#endif /* O2CLUSTER_NODEMANAGER_H */
81