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1/*
2 * net/tipc/name_table.h: Include file for TIPC name table code
3 *
4 * Copyright (c) 2000-2006, 2014-2015, Ericsson AB
5 * Copyright (c) 2004-2005, 2010-2011, Wind River Systems
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions are met:
10 *
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. Neither the names of the copyright holders nor the names of its
17 * contributors may be used to endorse or promote products derived from
18 * this software without specific prior written permission.
19 *
20 * Alternatively, this software may be distributed under the terms of the
21 * GNU General Public License ("GPL") version 2 as published by the Free
22 * Software Foundation.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
25 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
28 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
29 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
30 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
31 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
32 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
33 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
34 * POSSIBILITY OF SUCH DAMAGE.
35 */
36
37#ifndef _TIPC_NAME_TABLE_H
38#define _TIPC_NAME_TABLE_H
39
40struct tipc_subscription;
41struct tipc_plist;
42
43/*
44 * TIPC name types reserved for internal TIPC use (both current and planned)
45 */
46#define TIPC_ZM_SRV 3 /* zone master service name type */
47#define TIPC_PUBL_SCOPE_NUM (TIPC_NODE_SCOPE + 1)
48#define TIPC_NAMETBL_SIZE 1024 /* must be a power of 2 */
49
50/**
51 * struct publication - info about a published (name or) name sequence
52 * @type: name sequence type
53 * @lower: name sequence lower bound
54 * @upper: name sequence upper bound
55 * @scope: scope of publication
56 * @node: network address of publishing port's node
57 * @ref: publishing port
58 * @key: publication key
59 * @nodesub_list: subscription to "node down" event (off-node publication only)
60 * @local_list: adjacent entries in list of publications made by this node
61 * @pport_list: adjacent entries in list of publications made by this port
62 * @node_list: adjacent matching name seq publications with >= node scope
63 * @cluster_list: adjacent matching name seq publications with >= cluster scope
64 * @zone_list: adjacent matching name seq publications with >= zone scope
65 * @rcu: RCU callback head used for deferred freeing
66 *
67 * Note that the node list, cluster list, and zone list are circular lists.
68 */
69struct publication {
70 u32 type;
71 u32 lower;
72 u32 upper;
73 u32 scope;
74 u32 node;
75 u32 ref;
76 u32 key;
77 struct list_head nodesub_list;
78 struct list_head local_list;
79 struct list_head pport_list;
80 struct list_head node_list;
81 struct list_head cluster_list;
82 struct list_head zone_list;
83 struct rcu_head rcu;
84};
85
86/**
87 * struct name_table - table containing all existing port name publications
88 * @seq_hlist: name sequence hash lists
89 * @publ_list: pulication lists
90 * @local_publ_count: number of publications issued by this node
91 */
92struct name_table {
93 struct hlist_head seq_hlist[TIPC_NAMETBL_SIZE];
94 struct list_head publ_list[TIPC_PUBL_SCOPE_NUM];
95 u32 local_publ_count;
96};
97
98int tipc_nl_name_table_dump(struct sk_buff *skb, struct netlink_callback *cb);
99
100u32 tipc_nametbl_translate(struct net *net, u32 type, u32 instance, u32 *node);
101int tipc_nametbl_mc_translate(struct net *net, u32 type, u32 lower, u32 upper,
102 u32 limit, struct tipc_plist *dports);
103struct publication *tipc_nametbl_publish(struct net *net, u32 type, u32 lower,
104 u32 upper, u32 scope, u32 port_ref,
105 u32 key);
106int tipc_nametbl_withdraw(struct net *net, u32 type, u32 lower, u32 ref,
107 u32 key);
108struct publication *tipc_nametbl_insert_publ(struct net *net, u32 type,
109 u32 lower, u32 upper, u32 scope,
110 u32 node, u32 ref, u32 key);
111struct publication *tipc_nametbl_remove_publ(struct net *net, u32 type,
112 u32 lower, u32 node, u32 ref,
113 u32 key);
114void tipc_nametbl_subscribe(struct tipc_subscription *s);
115void tipc_nametbl_unsubscribe(struct tipc_subscription *s);
116int tipc_nametbl_init(struct net *net);
117void tipc_nametbl_stop(struct net *net);
118
119struct tipc_plist {
120 struct list_head list;
121 u32 port;
122};
123
124static inline void tipc_plist_init(struct tipc_plist *pl)
125{
126 INIT_LIST_HEAD(&pl->list);
127 pl->port = 0;
128}
129
130void tipc_plist_push(struct tipc_plist *pl, u32 port);
131u32 tipc_plist_pop(struct tipc_plist *pl);
132
133#endif
1/*
2 * net/tipc/name_table.h: Include file for TIPC name table code
3 *
4 * Copyright (c) 2000-2006, Ericsson AB
5 * Copyright (c) 2004-2005, 2010-2011, Wind River Systems
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions are met:
10 *
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. Neither the names of the copyright holders nor the names of its
17 * contributors may be used to endorse or promote products derived from
18 * this software without specific prior written permission.
19 *
20 * Alternatively, this software may be distributed under the terms of the
21 * GNU General Public License ("GPL") version 2 as published by the Free
22 * Software Foundation.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
25 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
28 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
29 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
30 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
31 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
32 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
33 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
34 * POSSIBILITY OF SUCH DAMAGE.
35 */
36
37#ifndef _TIPC_NAME_TABLE_H
38#define _TIPC_NAME_TABLE_H
39
40#include "node_subscr.h"
41
42struct subscription;
43struct port_list;
44
45/*
46 * TIPC name types reserved for internal TIPC use (both current and planned)
47 */
48
49#define TIPC_ZM_SRV 3 /* zone master service name type */
50
51
52/**
53 * struct publication - info about a published (name or) name sequence
54 * @type: name sequence type
55 * @lower: name sequence lower bound
56 * @upper: name sequence upper bound
57 * @scope: scope of publication
58 * @node: network address of publishing port's node
59 * @ref: publishing port
60 * @key: publication key
61 * @subscr: subscription to "node down" event (for off-node publications only)
62 * @local_list: adjacent entries in list of publications made by this node
63 * @pport_list: adjacent entries in list of publications made by this port
64 * @node_list: adjacent matching name seq publications with >= node scope
65 * @cluster_list: adjacent matching name seq publications with >= cluster scope
66 * @zone_list: adjacent matching name seq publications with >= zone scope
67 *
68 * Note that the node list, cluster list, and zone list are circular lists.
69 */
70
71struct publication {
72 u32 type;
73 u32 lower;
74 u32 upper;
75 u32 scope;
76 u32 node;
77 u32 ref;
78 u32 key;
79 struct tipc_node_subscr subscr;
80 struct list_head local_list;
81 struct list_head pport_list;
82 struct list_head node_list;
83 struct list_head cluster_list;
84 struct list_head zone_list;
85};
86
87
88extern rwlock_t tipc_nametbl_lock;
89
90struct sk_buff *tipc_nametbl_get(const void *req_tlv_area, int req_tlv_space);
91u32 tipc_nametbl_translate(u32 type, u32 instance, u32 *node);
92int tipc_nametbl_mc_translate(u32 type, u32 lower, u32 upper, u32 limit,
93 struct port_list *dports);
94int tipc_nametbl_publish_rsv(u32 ref, unsigned int scope,
95 struct tipc_name_seq const *seq);
96struct publication *tipc_nametbl_publish(u32 type, u32 lower, u32 upper,
97 u32 scope, u32 port_ref, u32 key);
98int tipc_nametbl_withdraw(u32 type, u32 lower, u32 ref, u32 key);
99struct publication *tipc_nametbl_insert_publ(u32 type, u32 lower, u32 upper,
100 u32 scope, u32 node, u32 ref, u32 key);
101struct publication *tipc_nametbl_remove_publ(u32 type, u32 lower,
102 u32 node, u32 ref, u32 key);
103void tipc_nametbl_subscribe(struct subscription *s);
104void tipc_nametbl_unsubscribe(struct subscription *s);
105int tipc_nametbl_init(void);
106void tipc_nametbl_stop(void);
107
108#endif