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