2 * net/tipc/subscr.h: Include file for TIPC network topology service
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38 #ifndef _TIPC_SUBSCR_H
39 #define _TIPC_SUBSCR_H
43 #define TIPC_MAX_SUBSCR 65535
44 #define TIPC_MAX_PUBL 65535
47 struct tipc_subscription;
51 * struct tipc_subscription - TIPC network topology subscription object
52 * @s: host-endian copy of the user subscription
53 * @evt: template for events generated by subscription
54 * @kref: reference count for this subscription
55 * @net: network namespace associated with subscription
56 * @timer: timer governing subscription duration (optional)
57 * @service_list: adjacent subscriptions in name sequence's subscription list
58 * @sub_list: adjacent subscriptions in subscriber's subscription list
59 * @conid: connection identifier of topology server
60 * @inactive: true if this subscription is inactive
61 * @lock: serialize up/down and timer events
63 struct tipc_subscription {
65 struct tipc_event evt;
68 struct timer_list timer;
69 struct list_head service_list;
70 struct list_head sub_list;
76 struct tipc_subscription *tipc_sub_subscribe(struct net *net,
77 struct tipc_subscr *s,
79 void tipc_sub_unsubscribe(struct tipc_subscription *sub);
80 void tipc_sub_report_overlap(struct tipc_subscription *sub,
81 struct publication *p,
82 u32 event, bool must);
84 int __net_init tipc_topsrv_init_net(struct net *net);
85 void __net_exit tipc_topsrv_exit_net(struct net *net);
87 void tipc_sub_put(struct tipc_subscription *subscription);
88 void tipc_sub_get(struct tipc_subscription *subscription);
90 #define TIPC_FILTER_MASK (TIPC_SUB_PORTS | TIPC_SUB_SERVICE | TIPC_SUB_CANCEL)
92 /* tipc_sub_read - return field_ of struct sub_ in host endian format
94 #define tipc_sub_read(sub_, field_) \
96 struct tipc_subscr *sub__ = sub_; \
97 u32 val__ = (sub__)->field_; \
98 int swap_ = !((sub__)->filter & TIPC_FILTER_MASK); \
99 (swap_ ? swab32(val__) : val__); \
102 /* tipc_sub_write - write val_ to field_ of struct sub_ in user endian format
104 #define tipc_sub_write(sub_, field_, val_) \
106 struct tipc_subscr *sub__ = sub_; \
108 int swap_ = !((sub__)->filter & TIPC_FILTER_MASK); \
109 (sub__)->field_ = swap_ ? swab32(val__) : val__; \
112 /* tipc_evt_write - write val_ to field_ of struct evt_ in user endian format
114 #define tipc_evt_write(evt_, field_, val_) \
116 struct tipc_event *evt__ = evt_; \
118 int swap_ = !((evt__)->s.filter & (TIPC_FILTER_MASK)); \
119 (evt__)->field_ = swap_ ? swab32(val__) : val__; \