tipc: Add support for customized subscription overlap handling

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>

1 files changed, 3 insertions, 1 deletions

diff --git a/net/tipc/subscr.c b/net/tipc/subscr.c
index 8f8d0a6c1c16..81e2bd5f2413 100644
--- a/net/tipc/subscr.c
+++ b/net/tipc/subscr.c
@@ -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);