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 enum o2nm_fence_method { 37 O2NM_FENCE_RESET = 0, 38 O2NM_FENCE_PANIC, 39 O2NM_FENCE_METHODS, /* Number of fence methods */ 40 }; 41 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 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; 64 unsigned int cl_idle_timeout_ms; 65 unsigned int cl_keepalive_delay_ms; 66 unsigned int cl_reconnect_delay_ms; 67 enum o2nm_fence_method cl_fence_method; 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 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 83 int o2nm_depend_item(struct config_item *item); 84 void o2nm_undepend_item(struct config_item *item); 85 int o2nm_depend_this_node(void); 86 void o2nm_undepend_this_node(void); 87 88 #endif /* O2CLUSTER_NODEMANAGER_H */ 89