/* SPDX-License-Identifier: GPL-2.0-or-later */
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/* -*- mode: c; c-basic-offset: 8; -*-
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* vim: noexpandtab sw=8 ts=8 sts=0:
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*
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* nodemanager.h
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*
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* Function prototypes
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*
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* Copyright (C) 2004 Oracle. All rights reserved.
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*/
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#ifndef O2CLUSTER_NODEMANAGER_H
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#define O2CLUSTER_NODEMANAGER_H
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#include "ocfs2_nodemanager.h"
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/* This totally doesn't belong here. */
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#include <linux/configfs.h>
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#include <linux/rbtree.h>
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enum o2nm_fence_method {
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O2NM_FENCE_RESET = 0,
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O2NM_FENCE_PANIC,
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O2NM_FENCE_METHODS, /* Number of fence methods */
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};
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struct o2nm_node {
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spinlock_t nd_lock;
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struct config_item nd_item;
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char nd_name[O2NM_MAX_NAME_LEN+1]; /* replace? */
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__u8 nd_num;
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/* only one address per node, as attributes, for now. */
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__be32 nd_ipv4_address;
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__be16 nd_ipv4_port;
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struct rb_node nd_ip_node;
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/* there can be only one local node for now */
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int nd_local;
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unsigned long nd_set_attributes;
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};
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struct o2nm_cluster {
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struct config_group cl_group;
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unsigned cl_has_local:1;
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u8 cl_local_node;
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rwlock_t cl_nodes_lock;
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struct o2nm_node *cl_nodes[O2NM_MAX_NODES];
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struct rb_root cl_node_ip_tree;
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unsigned int cl_idle_timeout_ms;
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unsigned int cl_keepalive_delay_ms;
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unsigned int cl_reconnect_delay_ms;
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enum o2nm_fence_method cl_fence_method;
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/* this bitmap is part of a hack for disk bitmap.. will go eventually. - zab */
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unsigned long cl_nodes_bitmap[BITS_TO_LONGS(O2NM_MAX_NODES)];
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};
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extern struct o2nm_cluster *o2nm_single_cluster;
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u8 o2nm_this_node(void);
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int o2nm_configured_node_map(unsigned long *map, unsigned bytes);
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struct o2nm_node *o2nm_get_node_by_num(u8 node_num);
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struct o2nm_node *o2nm_get_node_by_ip(__be32 addr);
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void o2nm_node_get(struct o2nm_node *node);
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void o2nm_node_put(struct o2nm_node *node);
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int o2nm_depend_item(struct config_item *item);
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void o2nm_undepend_item(struct config_item *item);
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int o2nm_depend_this_node(void);
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void o2nm_undepend_this_node(void);
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#endif /* O2CLUSTER_NODEMANAGER_H */
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