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tipc: Add support for customized subscription overlap handling

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This patch enables TIPC's topology server code to do customized
overlap detection handling on a per-subscription basis.  (This
capability is needed to support the upcoming introduction of
multi-cluster TIPC networks.)

Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Allan Stephens 2008-05-19 13:27:31 -07:00 committed by David S. Miller
parent 236ae64063
commit e15f880409
2 changed files with 11 additions and 1 deletions
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4
net/tipc/subscr.c
View file

@ -157,7 +157,8 @@ void tipc_subscr_report_overlap(struct subscription *sub,
return;
if (!must && !(sub->filter & TIPC_SUB_PORTS))
return;
subscr_send_event(sub, found_lower, found_upper, event, port_ref, node);
sub->event_cb(sub, found_lower, found_upper, event, port_ref, node);
}
/**
@ -372,6 +373,7 @@ static void subscr_subscribe(struct tipc_subscr *s,
subscr_terminate(subscriber);
return;
}
sub->event_cb = subscr_send_event;
memcpy(&sub->evt.s, s, sizeof(struct tipc_subscr));
INIT_LIST_HEAD(&sub->subscription_list);
INIT_LIST_HEAD(&sub->nameseq_list);

8
net/tipc/subscr.h
View file

@ -37,11 +37,18 @@
#ifndef _TIPC_SUBSCR_H
#define _TIPC_SUBSCR_H
struct subscription;
typedef void (*tipc_subscr_event) (struct subscription *sub,
u32 found_lower, u32 found_upper,
u32 event, u32 port_ref, u32 node);
/**
* struct subscription - TIPC network topology subscription object
* @seq: name sequence associated with subscription
* @timeout: duration of subscription (in ms)
* @filter: event filtering to be done for subscription
* @event_cb: routine invoked when a subscription event is detected
* @evt: template for events generated by subscription
* @subscription_list: adjacent subscriptions in subscriber's subscription list
* @nameseq_list: adjacent subscriptions in name sequence's subscription list
@ -53,6 +60,7 @@ struct subscription {
struct tipc_name_seq seq;
u32 timeout;
u32 filter;
tipc_subscr_event event_cb;
struct tipc_event evt;
struct list_head subscription_list;
struct list_head nameseq_list;