[linux.git] / fs / ocfs2 / cluster / nodemanager.h

/* -*- mode: c; c-basic-offset: 8; -*-
 * vim: noexpandtab sw=8 ts=8 sts=0:
 *
 * nodemanager.h
 *
 * Function prototypes
 *
 * Copyright (C) 2004 Oracle.  All rights reserved.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public
 * License along with this program; if not, write to the
 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 021110-1307, USA.
 *
 */

#ifndef O2CLUSTER_NODEMANAGER_H
#define O2CLUSTER_NODEMANAGER_H

#include "ocfs2_nodemanager.h"

/* This totally doesn't belong here. */
#include <linux/configfs.h>
#include <linux/rbtree.h>

enum o2nm_fence_method {
	O2NM_FENCE_RESET	= 0,
	O2NM_FENCE_PANIC,
	O2NM_FENCE_METHODS,	/* Number of fence methods */
};

struct o2nm_node {
	spinlock_t		nd_lock;
	struct config_item	nd_item;
	char			nd_name[O2NM_MAX_NAME_LEN+1]; /* replace? */
	__u8			nd_num;
	/* only one address per node, as attributes, for now. */
	__be32			nd_ipv4_address;
	__be16			nd_ipv4_port;
	struct rb_node		nd_ip_node;
	/* there can be only one local node for now */
	int			nd_local;

	unsigned long		nd_set_attributes;
};

struct o2nm_cluster {
	struct config_group	cl_group;
	unsigned		cl_has_local:1;
	u8			cl_local_node;
	rwlock_t		cl_nodes_lock;
	struct o2nm_node  	*cl_nodes[O2NM_MAX_NODES];
	struct rb_root		cl_node_ip_tree;
	unsigned int		cl_idle_timeout_ms;
	unsigned int		cl_keepalive_delay_ms;
	unsigned int		cl_reconnect_delay_ms;
	enum o2nm_fence_method	cl_fence_method;

	/* this bitmap is part of a hack for disk bitmap.. will go eventually. - zab */
	unsigned long	cl_nodes_bitmap[BITS_TO_LONGS(O2NM_MAX_NODES)];
};

extern struct o2nm_cluster *o2nm_single_cluster;

u8 o2nm_this_node(void);

int o2nm_configured_node_map(unsigned long *map, unsigned bytes);
struct o2nm_node *o2nm_get_node_by_num(u8 node_num);
struct o2nm_node *o2nm_get_node_by_ip(__be32 addr);
void o2nm_node_get(struct o2nm_node *node);
void o2nm_node_put(struct o2nm_node *node);

int o2nm_depend_item(struct config_item *item);
void o2nm_undepend_item(struct config_item *item);
int o2nm_depend_this_node(void);
void o2nm_undepend_this_node(void);

#endif /* O2CLUSTER_NODEMANAGER_H */
Commit	Line	Data
0c83ed8e KH	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
f6656d26 SM	36	enum o2nm_fence_method {
	37	O2NM_FENCE_RESET = 0,
	38	O2NM_FENCE_PANIC,
	39	O2NM_FENCE_METHODS, /* Number of fence methods */
	40	};
	41
0c83ed8e KH	42	struct o2nm_node {
	43	spinlock_t nd_lock;
	44	struct config_item nd_item;
	45	char nd_name[O2NM_MAX_NAME_LEN+1]; /* replace? */
	46	__u8 nd_num;
	47	/* only one address per node, as attributes, for now. */
	48	__be32 nd_ipv4_address;
	49	__be16 nd_ipv4_port;
	50	struct rb_node nd_ip_node;
	51	/* there can be only one local node for now */
	52	int nd_local;
	53
	54	unsigned long nd_set_attributes;
	55	};
	56
296b75ed AB	57	struct o2nm_cluster {
	58	struct config_group cl_group;
	59	unsigned cl_has_local:1;
	60	u8 cl_local_node;
	61	rwlock_t cl_nodes_lock;
	62	struct o2nm_node *cl_nodes[O2NM_MAX_NODES];
	63	struct rb_root cl_node_ip_tree;
b5dd8030 JM	64	unsigned int cl_idle_timeout_ms;
	65	unsigned int cl_keepalive_delay_ms;
	66	unsigned int cl_reconnect_delay_ms;
f6656d26	67	enum o2nm_fence_method cl_fence_method;
296b75ed AB	68
	69	/* this bitmap is part of a hack for disk bitmap.. will go eventually. - zab */
	70	unsigned long cl_nodes_bitmap[BITS_TO_LONGS(O2NM_MAX_NODES)];
	71	};
	72
	73	extern struct o2nm_cluster *o2nm_single_cluster;
	74
0c83ed8e KH	75	u8 o2nm_this_node(void);
	76
	77	int o2nm_configured_node_map(unsigned long *map, unsigned bytes);
	78	struct o2nm_node *o2nm_get_node_by_num(u8 node_num);
	79	struct o2nm_node *o2nm_get_node_by_ip(__be32 addr);
	80	void o2nm_node_get(struct o2nm_node *node);
	81	void o2nm_node_put(struct o2nm_node *node);
	82
14829422 JB	83	int o2nm_depend_item(struct config_item *item);
14829422 JB	84	void o2nm_undepend_item(struct config_item *item);
16c6a4f2 JB	85	int o2nm_depend_this_node(void);
16c6a4f2 JB	86	void o2nm_undepend_this_node(void);
14829422	87
0c83ed8e	88	#endif /* O2CLUSTER_NODEMANAGER_H */