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 #define FS_OCFS2_NM 1 37 38 const char *o2nm_get_hb_ctl_path(void); 39 40 struct o2nm_node { 41 spinlock_t nd_lock; 42 struct config_item nd_item; 43 char nd_name[O2NM_MAX_NAME_LEN+1]; /* replace? */ 44 __u8 nd_num; 45 /* only one address per node, as attributes, for now. */ 46 __be32 nd_ipv4_address; 47 __be16 nd_ipv4_port; 48 struct rb_node nd_ip_node; 49 /* there can be only one local node for now */ 50 int nd_local; 51 52 unsigned long nd_set_attributes; 53 }; 54 55 struct o2nm_cluster { 56 struct config_group cl_group; 57 unsigned cl_has_local:1; 58 u8 cl_local_node; 59 rwlock_t cl_nodes_lock; 60 struct o2nm_node *cl_nodes[O2NM_MAX_NODES]; 61 struct rb_root cl_node_ip_tree; 62 unsigned int cl_idle_timeout_ms; 63 unsigned int cl_keepalive_delay_ms; 64 unsigned int cl_reconnect_delay_ms; 65 66 /* this bitmap is part of a hack for disk bitmap.. will go eventually. - zab */ 67 unsigned long cl_nodes_bitmap[BITS_TO_LONGS(O2NM_MAX_NODES)]; 68 }; 69 70 extern struct o2nm_cluster *o2nm_single_cluster; 71 72 u8 o2nm_this_node(void); 73 74 int o2nm_configured_node_map(unsigned long *map, unsigned bytes); 75 struct o2nm_node *o2nm_get_node_by_num(u8 node_num); 76 struct o2nm_node *o2nm_get_node_by_ip(__be32 addr); 77 void o2nm_node_get(struct o2nm_node *node); 78 void o2nm_node_put(struct o2nm_node *node); 79 80 int o2nm_depend_item(struct config_item *item); 81 void o2nm_undepend_item(struct config_item *item); 82 int o2nm_depend_this_node(void); 83 void o2nm_undepend_this_node(void); 84 85 #endif /* O2CLUSTER_NODEMANAGER_H */ 86