1 /* 1 /*
2 * net/tipc/subscr.h: Include file for TIPC ne 2 * net/tipc/subscr.h: Include file for TIPC network topology service
3 * 3 *
4 * Copyright (c) 2003-2017, Ericsson AB !! 4 * Copyright (c) 2003-2006, Ericsson AB
5 * Copyright (c) 2005-2007, 2012-2013, Wind Ri !! 5 * Copyright (c) 2005-2007, Wind River Systems
6 * Copyright (c) 2020-2021, Red Hat Inc <<
7 * All rights reserved. 6 * All rights reserved.
8 * 7 *
9 * Redistribution and use in source and binary 8 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that t 9 * modification, are permitted provided that the following conditions are met:
11 * 10 *
12 * 1. Redistributions of source code must reta 11 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the 12 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must repr 13 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the 14 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials pro 15 * documentation and/or other materials provided with the distribution.
17 * 3. Neither the names of the copyright holde 16 * 3. Neither the names of the copyright holders nor the names of its
18 * contributors may be used to endorse or p 17 * contributors may be used to endorse or promote products derived from
19 * this software without specific prior wri 18 * this software without specific prior written permission.
20 * 19 *
21 * Alternatively, this software may be distrib 20 * Alternatively, this software may be distributed under the terms of the
22 * GNU General Public License ("GPL") version 21 * GNU General Public License ("GPL") version 2 as published by the Free
23 * Software Foundation. 22 * Software Foundation.
24 * 23 *
25 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT 24 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
26 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCL 25 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND F 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
28 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYR 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
29 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL 28 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT L 29 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 30 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THE 31 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUD 32 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
34 * ARISING IN ANY WAY OUT OF THE USE OF THIS S 33 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
35 * POSSIBILITY OF SUCH DAMAGE. 34 * POSSIBILITY OF SUCH DAMAGE.
36 */ 35 */
37 36
38 #ifndef _TIPC_SUBSCR_H 37 #ifndef _TIPC_SUBSCR_H
39 #define _TIPC_SUBSCR_H 38 #define _TIPC_SUBSCR_H
40 39
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; 40 struct tipc_subscription;
48 struct tipc_conn; <<
49 41
50 /** 42 /**
51 * struct tipc_subscription - TIPC network top 43 * struct tipc_subscription - TIPC network topology subscription object
52 * @s: host-endian copy of the user subscripti !! 44 * @seq: name sequence associated with subscription
53 * @evt: template for events generated by subs !! 45 * @timeout: duration of subscription (in ms)
54 * @kref: reference count for this subscriptio !! 46 * @filter: event filtering to be done for subscription
55 * @net: network namespace associated with sub <<
56 * @timer: timer governing subscription durati 47 * @timer: timer governing subscription duration (optional)
57 * @service_list: adjacent subscriptions in na !! 48 * @nameseq_list: adjacent subscriptions in name sequence's subscription list
58 * @sub_list: adjacent subscriptions in subscr !! 49 * @subscription_list: adjacent subscriptions in subscriber's subscription list
59 * @conid: connection identifier of topology s !! 50 * @server_ref: object reference of server port associated with subscription
60 * @inactive: true if this subscription is ina !! 51 * @swap: indicates if subscriber uses opposite endianness in its messages
61 * @lock: serialize up/down and timer events !! 52 * @evt: template for events generated by subscription
62 */ 53 */
63 struct tipc_subscription { 54 struct tipc_subscription {
64 struct tipc_subscr s; !! 55 struct tipc_name_seq seq;
65 struct tipc_event evt; !! 56 u32 timeout;
66 struct kref kref; !! 57 u32 filter;
67 struct net *net; <<
68 struct timer_list timer; 58 struct timer_list timer;
69 struct list_head service_list; !! 59 struct list_head nameseq_list;
70 struct list_head sub_list; !! 60 struct list_head subscription_list;
71 int conid; !! 61 u32 server_ref;
72 bool inactive; !! 62 int swap;
73 spinlock_t lock; !! 63 struct tipc_event evt;
74 }; 64 };
75 65
76 struct tipc_subscription *tipc_sub_subscribe(s !! 66 int tipc_subscr_overlap(struct tipc_subscription *sub,
77 s !! 67 u32 found_lower,
78 i !! 68 u32 found_upper);
79 void tipc_sub_unsubscribe(struct tipc_subscrip !! 69
80 void tipc_sub_report_overlap(struct tipc_subsc !! 70 void tipc_subscr_report_overlap(struct tipc_subscription *sub,
81 struct publicatio !! 71 u32 found_lower,
82 u32 event, bool m !! 72 u32 found_upper,
83 !! 73 u32 event,
84 int __net_init tipc_topsrv_init_net(struct net !! 74 u32 port_ref,
85 void __net_exit tipc_topsrv_exit_net(struct ne !! 75 u32 node,
>> 76 int must_report);
86 77
87 void tipc_sub_put(struct tipc_subscription *su !! 78 int tipc_subscr_start(void);
88 void tipc_sub_get(struct tipc_subscription *su <<
89 79
90 #define TIPC_FILTER_MASK (TIPC_SUB_PORTS | TIP !! 80 void tipc_subscr_stop(void);
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 81
122 #endif 82 #endif
123 83
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