Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / fs / ocfs2 / cluster / nodemanager.h

diff --git a/kernel/fs/ocfs2/cluster/nodemanager.h b/kernel/fs/ocfs2/cluster/nodemanager.h
new file mode 100644 (file)
index 0000000..09ea2d3
--- /dev/null
+++ b/kernel/fs/ocfs2/cluster/nodemanager.h
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+/* -*- 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 */