1 /* 1
2 * net/tipc/subscr.h: Include file for TIPC ne
3 *
4 * Copyright (c) 2003-2017, Ericsson AB
5 * Copyright (c) 2005-2007, 2012-2013, Wind Ri
6 * Copyright (c) 2020-2021, Red Hat Inc
7 * All rights reserved.
8 *
9 * Redistribution and use in source and binary
10 * modification, are permitted provided that t
11 *
12 * 1. Redistributions of source code must reta
13 * notice, this list of conditions and the
14 * 2. Redistributions in binary form must repr
15 * notice, this list of conditions and the
16 * documentation and/or other materials pro
17 * 3. Neither the names of the copyright holde
18 * contributors may be used to endorse or p
19 * this software without specific prior wri
20 *
21 * Alternatively, this software may be distrib
22 * GNU General Public License ("GPL") version
23 * Software Foundation.
24 *
25 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT
26 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCL
27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND F
28 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYR
29 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL
30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT L
31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THE
33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUD
34 * ARISING IN ANY WAY OUT OF THE USE OF THIS S
35 * POSSIBILITY OF SUCH DAMAGE.
36 */
37
38 #ifndef _TIPC_SUBSCR_H
39 #define _TIPC_SUBSCR_H
40
41 #include "topsrv.h"
42
43 #define TIPC_MAX_SUBSCR 65535
44 #define TIPC_MAX_PUBL 65535
45
46 struct publication;
47 struct tipc_subscription;
48 struct tipc_conn;
49
50 /**
51 * struct tipc_subscription - TIPC network top
52 * @s: host-endian copy of the user subscripti
53 * @evt: template for events generated by subs
54 * @kref: reference count for this subscriptio
55 * @net: network namespace associated with sub
56 * @timer: timer governing subscription durati
57 * @service_list: adjacent subscriptions in na
58 * @sub_list: adjacent subscriptions in subscr
59 * @conid: connection identifier of topology s
60 * @inactive: true if this subscription is ina
61 * @lock: serialize up/down and timer events
62 */
63 struct tipc_subscription {
64 struct tipc_subscr s;
65 struct tipc_event evt;
66 struct kref kref;
67 struct net *net;
68 struct timer_list timer;
69 struct list_head service_list;
70 struct list_head sub_list;
71 int conid;
72 bool inactive;
73 spinlock_t lock;
74 };
75
76 struct tipc_subscription *tipc_sub_subscribe(s
77 s
78 i
79 void tipc_sub_unsubscribe(struct tipc_subscrip
80 void tipc_sub_report_overlap(struct tipc_subsc
81 struct publicatio
82 u32 event, bool m
83
84 int __net_init tipc_topsrv_init_net(struct net
85 void __net_exit tipc_topsrv_exit_net(struct ne
86
87 void tipc_sub_put(struct tipc_subscription *su
88 void tipc_sub_get(struct tipc_subscription *su
89
90 #define TIPC_FILTER_MASK (TIPC_SUB_PORTS | TIP
91
92 /* tipc_sub_read - return field_ of struct sub
93 */
94 #define tipc_sub_read(sub_, field_)
95 ({
96 struct tipc_subscr *sub__ = su
97 u32 val__ = (sub__)->field_;
98 int swap_ = !((sub__)->filter
99 (swap_ ? swab32(val__) : val__
100 })
101
102 /* tipc_sub_write - write val_ to field_ of st
103 */
104 #define tipc_sub_write(sub_, field_, val_)
105 ({
106 struct tipc_subscr *sub__ = su
107 u32 val__ = val_;
108 int swap_ = !((sub__)->filter
109 (sub__)->field_ = swap_ ? swab
110 })
111
112 /* tipc_evt_write - write val_ to field_ of st
113 */
114 #define tipc_evt_write(evt_, field_, val_)
115 ({
116 struct tipc_event *evt__ = evt
117 u32 val__ = val_;
118 int swap_ = !((evt__)->s.filte
119 (evt__)->field_ = swap_ ? swab
120 })
121
122 #endif
123
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