2 * net/tipc/node.h: Include file for TIPC node management routines
4 * Copyright (c) 2000-2006, Ericsson AB
5 * Copyright (c) 2005, Wind River Systems
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40 #include "node_subscr.h"
46 * struct tipc_node - TIPC node structure
47 * @addr: network address of node
48 * @lock: spinlock governing access to structure
49 * @next: pointer to next node in sorted list of cluster's nodes
50 * @nsub: list of "node down" subscriptions monitoring node
51 * @active_links: pointers to active links to node
52 * @links: pointers to all links to node
53 * @working_links: number of working links to node (both active and standby)
54 * @cleanup_required: non-zero if cleaning up after a prior loss of contact
55 * @link_cnt: number of links to node
56 * @permit_changeover: non-zero if node has redundant links to this system
57 * @bclink: broadcast-related info
58 * @supported: non-zero if node supports TIPC b'cast capability
59 * @acked: sequence # of last outbound b'cast message acknowledged by node
60 * @last_in: sequence # of last in-sequence b'cast message received from node
61 * @gap_after: sequence # of last message not requiring a NAK request
62 * @gap_to: sequence # of last message requiring a NAK request
63 * @nack_sync: counter that determines when NAK requests should be sent
64 * @deferred_head: oldest OOS b'cast message received from node
65 * @deferred_tail: newest OOS b'cast message received from node
66 * @defragm: list of partially reassembled b'cast message fragments from node
72 struct tipc_node *next;
73 struct list_head nsub;
74 struct link *active_links[2];
75 struct link *links[MAX_BEARERS];
79 int permit_changeover;
87 struct sk_buff *deferred_head;
88 struct sk_buff *deferred_tail;
89 struct sk_buff *defragm;
93 extern u32 tipc_own_tag;
95 struct tipc_node *tipc_node_create(u32 addr);
96 void tipc_node_delete(struct tipc_node *n_ptr);
97 struct tipc_node *tipc_node_attach_link(struct link *l_ptr);
98 void tipc_node_detach_link(struct tipc_node *n_ptr, struct link *l_ptr);
99 void tipc_node_link_down(struct tipc_node *n_ptr, struct link *l_ptr);
100 void tipc_node_link_up(struct tipc_node *n_ptr, struct link *l_ptr);
101 int tipc_node_has_active_links(struct tipc_node *n_ptr);
102 int tipc_node_has_redundant_links(struct tipc_node *n_ptr);
103 int tipc_node_is_up(struct tipc_node *n_ptr);
104 struct sk_buff *tipc_node_get_links(const void *req_tlv_area, int req_tlv_space);
105 struct sk_buff *tipc_node_get_nodes(const void *req_tlv_area, int req_tlv_space);
107 static inline struct tipc_node *tipc_node_find(u32 addr)
109 if (likely(in_own_cluster(addr)))
110 return tipc_net.nodes[tipc_node(addr)];
114 static inline void tipc_node_lock(struct tipc_node *n_ptr)
116 spin_lock_bh(&n_ptr->lock);
119 static inline void tipc_node_unlock(struct tipc_node *n_ptr)
121 spin_unlock_bh(&n_ptr->lock);