1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 /* -*- mode: c; c-basic-offset: 8; -*- 3 * vim: noexpandtab sw=8 ts=8 sts=0: 4 * 5 * nodemanager.h 6 * 7 * Function prototypes 8 * 9 * Copyright (C) 2004 Oracle. All rights reserved. 10 */ 11 12 #ifndef O2CLUSTER_NODEMANAGER_H 13 #define O2CLUSTER_NODEMANAGER_H 14 15 #include "ocfs2_nodemanager.h" 16 17 /* This totally doesn't belong here. */ 18 #include <linux/configfs.h> 19 #include <linux/rbtree.h> 20 21 enum o2nm_fence_method { 22 O2NM_FENCE_RESET = 0, 23 O2NM_FENCE_PANIC, 24 O2NM_FENCE_METHODS, /* Number of fence methods */ 25 }; 26 27 struct o2nm_node { 28 spinlock_t nd_lock; 29 struct config_item nd_item; 30 char nd_name[O2NM_MAX_NAME_LEN+1]; /* replace? */ 31 __u8 nd_num; 32 /* only one address per node, as attributes, for now. */ 33 __be32 nd_ipv4_address; 34 __be16 nd_ipv4_port; 35 struct rb_node nd_ip_node; 36 /* there can be only one local node for now */ 37 int nd_local; 38 39 unsigned long nd_set_attributes; 40 }; 41 42 struct o2nm_cluster { 43 struct config_group cl_group; 44 unsigned cl_has_local:1; 45 u8 cl_local_node; 46 rwlock_t cl_nodes_lock; 47 struct o2nm_node *cl_nodes[O2NM_MAX_NODES]; 48 struct rb_root cl_node_ip_tree; 49 unsigned int cl_idle_timeout_ms; 50 unsigned int cl_keepalive_delay_ms; 51 unsigned int cl_reconnect_delay_ms; 52 enum o2nm_fence_method cl_fence_method; 53 54 /* this bitmap is part of a hack for disk bitmap.. will go eventually. - zab */ 55 unsigned long cl_nodes_bitmap[BITS_TO_LONGS(O2NM_MAX_NODES)]; 56 }; 57 58 extern struct o2nm_cluster *o2nm_single_cluster; 59 60 u8 o2nm_this_node(void); 61 62 int o2nm_configured_node_map(unsigned long *map, unsigned bytes); 63 struct o2nm_node *o2nm_get_node_by_num(u8 node_num); 64 struct o2nm_node *o2nm_get_node_by_ip(__be32 addr); 65 void o2nm_node_get(struct o2nm_node *node); 66 void o2nm_node_put(struct o2nm_node *node); 67 68 int o2nm_depend_item(struct config_item *item); 69 void o2nm_undepend_item(struct config_item *item); 70 int o2nm_depend_this_node(void); 71 void o2nm_undepend_this_node(void); 72 73 #endif /* O2CLUSTER_NODEMANAGER_H */ 74