| /* -*- 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 R2CLUSTER_NODEMANAGER_H |
| #define R2CLUSTER_NODEMANAGER_H |
| |
| #include "ramster_nodemanager.h" |
| |
| /* This totally doesn't belong here. */ |
| #include <linux/configfs.h> |
| #include <linux/rbtree.h> |
| |
| enum r2nm_fence_method { |
| R2NM_FENCE_RESET = 0, |
| R2NM_FENCE_PANIC, |
| R2NM_FENCE_METHODS, /* Number of fence methods */ |
| }; |
| |
| struct r2nm_node { |
| spinlock_t nd_lock; |
| struct config_item nd_item; |
| char nd_name[R2NM_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 r2nm_cluster { |
| struct config_group cl_group; |
| unsigned cl_has_local:1; |
| u8 cl_local_node; |
| rwlock_t cl_nodes_lock; |
| struct r2nm_node *cl_nodes[R2NM_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 r2nm_fence_method cl_fence_method; |
| |
| /* part of a hack for disk bitmap.. will go eventually. - zab */ |
| unsigned long cl_nodes_bitmap[BITS_TO_LONGS(R2NM_MAX_NODES)]; |
| }; |
| |
| extern struct r2nm_cluster *r2nm_single_cluster; |
| |
| u8 r2nm_this_node(void); |
| |
| int r2nm_configured_node_map(unsigned long *map, unsigned bytes); |
| struct r2nm_node *r2nm_get_node_by_num(u8 node_num); |
| struct r2nm_node *r2nm_get_node_by_ip(__be32 addr); |
| void r2nm_node_get(struct r2nm_node *node); |
| void r2nm_node_put(struct r2nm_node *node); |
| |
| int r2nm_depend_item(struct config_item *item); |
| void r2nm_undepend_item(struct config_item *item); |
| int r2nm_depend_this_node(void); |
| void r2nm_undepend_this_node(void); |
| |
| #endif /* R2CLUSTER_NODEMANAGER_H */ |