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
46 struct tipc_subscription;
50 * struct tipc_subscription - TIPC network topology subscription object
51 * @kref: reference count for this subscription
52 * @net: network namespace associated with subscription
53 * @timer: timer governing subscription duration (optional)
54 * @service_list: adjacent subscriptions in name sequence's subscription list
55 * @sub_list: adjacent subscriptions in subscriber's subscription list
56 * @evt: template for events generated by subscription
57 * @conid: connection identifier of topology server
58 * @inactive: true if this subscription is inactive
59 * @lock: serialize up/down and timer events
61 struct tipc_subscription {
64 struct timer_list timer;
65 struct list_head service_list;
66 struct list_head sub_list;
67 struct tipc_event evt;
73 struct tipc_subscription *tipc_sub_subscribe(struct net *net,
74 struct tipc_subscr *s,
76 void tipc_sub_unsubscribe(struct tipc_subscription *sub);
78 int tipc_sub_check_overlap(struct tipc_service_range *seq,
79 u32 found_lower, u32 found_upper);
80 void tipc_sub_report_overlap(struct tipc_subscription *sub,
81 u32 found_lower, u32 found_upper,
82 u32 event, u32 port, u32 node,
85 int __net_init tipc_topsrv_init_net(struct net *net);
86 void __net_exit tipc_topsrv_exit_net(struct net *net);
88 void tipc_sub_put(struct tipc_subscription *subscription);
89 void tipc_sub_get(struct tipc_subscription *subscription);
91 #define TIPC_FILTER_MASK (TIPC_SUB_PORTS | TIPC_SUB_SERVICE | TIPC_SUB_CANCEL)
93 /* tipc_sub_read - return field_ of struct sub_ in host endian format
95 #define tipc_sub_read(sub_, field_) \
97 struct tipc_subscr *sub__ = sub_; \
98 u32 val__ = (sub__)->field_; \
99 int swap_ = !((sub__)->filter & TIPC_FILTER_MASK); \
100 (swap_ ? swab32(val__) : val__); \
103 /* tipc_sub_write - write val_ to field_ of struct sub_ in user endian format
105 #define tipc_sub_write(sub_, field_, val_) \
107 struct tipc_subscr *sub__ = sub_; \
109 int swap_ = !((sub__)->filter & TIPC_FILTER_MASK); \
110 (sub__)->field_ = swap_ ? swab32(val__) : val__; \
113 /* tipc_evt_write - write val_ to field_ of struct evt_ in user endian format
115 #define tipc_evt_write(evt_, field_, val_) \
117 struct tipc_event *evt__ = evt_; \
119 int swap_ = !((evt__)->s.filter & (TIPC_FILTER_MASK)); \
120 (evt__)->field_ = swap_ ? swab32(val__) : val__; \