2 * net/tipc/node.h: Include file for TIPC node management routines
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40 #include "node_subscr.h"
46 * Out-of-range value for node signature
48 #define INVALID_NODE_SIG 0x10000
50 /* Flags used to block (re)establishment of contact with a neighboring node */
51 #define WAIT_PEER_DOWN 0x0001 /* wait to see that peer's links are down */
52 #define WAIT_NAMES_GONE 0x0002 /* wait for peer's publications to be purged */
53 #define WAIT_NODE_DOWN 0x0004 /* wait until peer node is declared down */
56 * struct tipc_node - TIPC node structure
57 * @addr: network address of node
58 * @lock: spinlock governing access to structure
59 * @hash: links to adjacent nodes in unsorted hash chain
60 * @list: links to adjacent nodes in sorted list of cluster's nodes
61 * @nsub: list of "node down" subscriptions monitoring node
62 * @active_links: pointers to active links to node
63 * @links: pointers to all links to node
64 * @working_links: number of working links to node (both active and standby)
65 * @block_setup: bit mask of conditions preventing link establishment to node
66 * @link_cnt: number of links to node
67 * @permit_changeover: non-zero if node has redundant links to this system
68 * @signature: node instance identifier
69 * @bclink: broadcast-related info
70 * @acked: sequence # of last outbound b'cast message acknowledged by node
71 * @last_in: sequence # of last in-sequence b'cast message received from node
72 * @last_sent: sequence # of last b'cast message sent by node
73 * @oos_state: state tracker for handling OOS b'cast messages
74 * @deferred_size: number of OOS b'cast messages in deferred queue
75 * @deferred_head: oldest OOS b'cast message received from node
76 * @deferred_tail: newest OOS b'cast message received from node
77 * @defragm: list of partially reassembled b'cast message fragments from node
78 * @recv_permitted: true if node is allowed to receive b'cast messages
83 struct hlist_node hash;
84 struct list_head list;
85 struct list_head nsub;
86 struct tipc_link *active_links[2];
87 struct tipc_link *links[MAX_BEARERS];
91 int permit_changeover;
99 struct sk_buff *deferred_head;
100 struct sk_buff *deferred_tail;
101 struct sk_buff *defragm;
106 extern struct list_head tipc_node_list;
108 struct tipc_node *tipc_node_find(u32 addr);
109 struct tipc_node *tipc_node_create(u32 addr);
110 void tipc_node_delete(struct tipc_node *n_ptr);
111 void tipc_node_attach_link(struct tipc_node *n_ptr, struct tipc_link *l_ptr);
112 void tipc_node_detach_link(struct tipc_node *n_ptr, struct tipc_link *l_ptr);
113 void tipc_node_link_down(struct tipc_node *n_ptr, struct tipc_link *l_ptr);
114 void tipc_node_link_up(struct tipc_node *n_ptr, struct tipc_link *l_ptr);
115 int tipc_node_active_links(struct tipc_node *n_ptr);
116 int tipc_node_redundant_links(struct tipc_node *n_ptr);
117 int tipc_node_is_up(struct tipc_node *n_ptr);
118 struct sk_buff *tipc_node_get_links(const void *req_tlv_area, int req_tlv_space);
119 struct sk_buff *tipc_node_get_nodes(const void *req_tlv_area, int req_tlv_space);
121 static inline void tipc_node_lock(struct tipc_node *n_ptr)
123 spin_lock_bh(&n_ptr->lock);
126 static inline void tipc_node_unlock(struct tipc_node *n_ptr)
128 spin_unlock_bh(&n_ptr->lock);