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 */
52 #define WAIT_PEER_DOWN 0x0001 /* wait to see that peer's links are down */
53 #define WAIT_NAMES_GONE 0x0002 /* wait for peer's publications to be purged */
54 #define WAIT_NODE_DOWN 0x0004 /* wait until peer node is declared down */
57 * struct tipc_node - TIPC node structure
58 * @addr: network address of node
59 * @lock: spinlock governing access to structure
60 * @hash: links to adjacent nodes in unsorted hash chain
61 * @list: links to adjacent nodes in sorted list of cluster's nodes
62 * @nsub: list of "node down" subscriptions monitoring node
63 * @active_links: pointers to active links to node
64 * @links: pointers to all links to node
65 * @working_links: number of working links to node (both active and standby)
66 * @block_setup: bit mask of conditions preventing link establishment to node
67 * @link_cnt: number of links to node
68 * @permit_changeover: non-zero if node has redundant links to this system
69 * @signature: node instance identifier
70 * @bclink: broadcast-related info
71 * @supportable: non-zero if node supports TIPC b'cast link capability
72 * @supported: non-zero if node supports TIPC b'cast capability
73 * @acked: sequence # of last outbound b'cast message acknowledged by node
74 * @last_in: sequence # of last in-sequence b'cast message received from node
75 * @last_sent: sequence # of last b'cast message sent by node
76 * @oos_state: state tracker for handling OOS b'cast messages
77 * @deferred_size: number of OOS b'cast messages in deferred queue
78 * @deferred_head: oldest OOS b'cast message received from node
79 * @deferred_tail: newest OOS b'cast message received from node
80 * @defragm: list of partially reassembled b'cast message fragments from node
86 struct hlist_node hash;
87 struct list_head list;
88 struct list_head nsub;
89 struct tipc_link *active_links[2];
90 struct tipc_link *links[MAX_BEARERS];
94 int permit_changeover;
104 struct sk_buff *deferred_head;
105 struct sk_buff *deferred_tail;
106 struct sk_buff *defragm;
110 extern struct list_head tipc_node_list;
112 struct tipc_node *tipc_node_find(u32 addr);
113 struct tipc_node *tipc_node_create(u32 addr);
114 void tipc_node_delete(struct tipc_node *n_ptr);
115 void tipc_node_attach_link(struct tipc_node *n_ptr, struct tipc_link *l_ptr);
116 void tipc_node_detach_link(struct tipc_node *n_ptr, struct tipc_link *l_ptr);
117 void tipc_node_link_down(struct tipc_node *n_ptr, struct tipc_link *l_ptr);
118 void tipc_node_link_up(struct tipc_node *n_ptr, struct tipc_link *l_ptr);
119 int tipc_node_active_links(struct tipc_node *n_ptr);
120 int tipc_node_redundant_links(struct tipc_node *n_ptr);
121 int tipc_node_is_up(struct tipc_node *n_ptr);
122 struct sk_buff *tipc_node_get_links(const void *req_tlv_area, int req_tlv_space);
123 struct sk_buff *tipc_node_get_nodes(const void *req_tlv_area, int req_tlv_space);
125 static inline void tipc_node_lock(struct tipc_node *n_ptr)
127 spin_lock_bh(&n_ptr->lock);
130 static inline void tipc_node_unlock(struct tipc_node *n_ptr)
132 spin_unlock_bh(&n_ptr->lock);