2 * net/tipc/name_table.h: Include file for TIPC name table code
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38 #ifndef _TIPC_NAME_TABLE_H
39 #define _TIPC_NAME_TABLE_H
41 struct tipc_subscription;
48 * TIPC name types reserved for internal TIPC use (both current and planned)
50 #define TIPC_ZM_SRV 3 /* zone master service name type */
51 #define TIPC_PUBL_SCOPE_NUM (TIPC_NODE_SCOPE + 1)
52 #define TIPC_NAMETBL_SIZE 1024 /* must be a power of 2 */
54 #define TIPC_ANY_SCOPE 10 /* Both node and cluster scope will match */
57 * struct publication - info about a published service address or range
58 * @sr: service range represented by this publication
59 * @sk: address of socket bound to this publication
60 * @scope: scope of publication, TIPC_NODE_SCOPE or TIPC_CLUSTER_SCOPE
61 * @key: publication key, unique across the cluster
63 * @binding_node: all publications from the same node which bound this one
64 * - Remote publications: in node->publ_list;
65 * Used by node/name distr to withdraw publications when node is lost
66 * - Local/node scope publications: in name_table->node_scope list
67 * - Local/cluster scope publications: in name_table->cluster_scope list
68 * @binding_sock: all publications from the same socket which bound this one
69 * Used by socket to withdraw publications when socket is unbound/released
70 * @local_publ: list of identical publications made from this node
71 * Used by closest_first and multicast receive lookup algorithms
72 * @all_publ: all publications identical to this one, whatever node and scope
73 * Used by round-robin lookup algorithm
74 * @list: to form a list of publications in temporal order
75 * @rcu: RCU callback head used for deferred freeing
78 struct tipc_service_range sr;
79 struct tipc_socket_addr sk;
83 struct list_head binding_node;
84 struct list_head binding_sock;
85 struct list_head local_publ;
86 struct list_head all_publ;
87 struct list_head list;
92 * struct name_table - table containing all existing port name publications
93 * @services: name sequence hash lists
94 * @node_scope: all local publications with node scope
95 * - used by name_distr during re-init of name table
96 * @cluster_scope: all local publications with cluster scope
97 * - used by name_distr to send bulk updates to new nodes
98 * - used by name_distr during re-init of name table
99 * @cluster_scope_lock: lock for accessing @cluster_scope
100 * @local_publ_count: number of publications issued by this node
101 * @rc_dests: destination node counter
102 * @snd_nxt: next sequence number to be used
105 struct hlist_head services[TIPC_NAMETBL_SIZE];
106 struct list_head node_scope;
107 struct list_head cluster_scope;
108 rwlock_t cluster_scope_lock;
109 u32 local_publ_count;
114 int tipc_nl_name_table_dump(struct sk_buff *skb, struct netlink_callback *cb);
115 bool tipc_nametbl_lookup_anycast(struct net *net, struct tipc_uaddr *ua,
116 struct tipc_socket_addr *sk);
117 void tipc_nametbl_lookup_mcast_sockets(struct net *net, struct tipc_uaddr *ua,
118 struct list_head *dports);
119 void tipc_nametbl_lookup_mcast_nodes(struct net *net, struct tipc_uaddr *ua,
120 struct tipc_nlist *nodes);
121 bool tipc_nametbl_lookup_group(struct net *net, struct tipc_uaddr *ua,
122 struct list_head *dsts, int *dstcnt,
123 u32 exclude, bool mcast);
124 void tipc_nametbl_build_group(struct net *net, struct tipc_group *grp,
125 struct tipc_uaddr *ua);
126 struct publication *tipc_nametbl_publish(struct net *net, struct tipc_uaddr *ua,
127 struct tipc_socket_addr *sk, u32 key);
128 void tipc_nametbl_withdraw(struct net *net, struct tipc_uaddr *ua,
129 struct tipc_socket_addr *sk, u32 key);
130 struct publication *tipc_nametbl_insert_publ(struct net *net,
131 struct tipc_uaddr *ua,
132 struct tipc_socket_addr *sk,
134 struct publication *tipc_nametbl_remove_publ(struct net *net,
135 struct tipc_uaddr *ua,
136 struct tipc_socket_addr *sk,
138 bool tipc_nametbl_subscribe(struct tipc_subscription *s);
139 void tipc_nametbl_unsubscribe(struct tipc_subscription *s);
140 int tipc_nametbl_init(struct net *net);
141 void tipc_nametbl_stop(struct net *net);
144 struct list_head list;
149 struct tipc_dest *tipc_dest_find(struct list_head *l, u32 node, u32 port);
150 bool tipc_dest_push(struct list_head *l, u32 node, u32 port);
151 bool tipc_dest_pop(struct list_head *l, u32 *node, u32 *port);
152 bool tipc_dest_del(struct list_head *l, u32 node, u32 port);
153 void tipc_dest_list_purge(struct list_head *l);