From: Allan Stephens Date: Thu, 26 Apr 2012 21:21:49 +0000 (-0400) Subject: tipc: Enhance re-initialization of network topology service X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=eb3865a99dc38396a403ef82f99f4c51dd34f0bf;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git tipc: Enhance re-initialization of network topology service Streamlines the job of re-initializing TIPC's network topology service when a node's network address is first assigned. Rather than destroying the topology server port and breaking its connections to existing subscribers, TIPC now simply lets the service continue running (since the change to the port identifier of each port used by the topology service no longer impacts the flow of messages between the service and its subscribers). This enhancement means that applications that utilize the topology service prior to the assignment of TIPC's network address no longer need to re-establish their subscriptions when the address is finally assigned. However, it is worth noting that any subsequent events for existing subscriptions report the new port identifier of the publishing port, rather than the original port identifier. (For example, a name that was previously reported as being published by <0.0.0:ref> may be subsequently withdrawn by .) This doesn't impact any of the existing known userspace in tipc-utils, since (a) TIPC continues to treat references to the original port ID correctly and (b) normal use cases assign an address before active use. However if there does happen to be some rare/custom application out there that was relying on this, they can simply bypass the enhancement by issuing a subscription to {0,0} and break its connection to the topology service, if an associated withdrawal event occurs. Signed-off-by: Allan Stephens Signed-off-by: Paul Gortmaker --- diff --git a/net/tipc/net.c b/net/tipc/net.c index f4a490b0cf4c..7c236c89cf5e 100644 --- a/net/tipc/net.c +++ b/net/tipc/net.c @@ -175,8 +175,6 @@ int tipc_net_start(u32 addr) { char addr_string[16]; - tipc_subscr_stop(); - write_lock_bh(&tipc_net_lock); tipc_own_addr = addr; tipc_named_reinit(); @@ -184,7 +182,6 @@ int tipc_net_start(u32 addr) tipc_bclink_init(); write_unlock_bh(&tipc_net_lock); - tipc_k_signal((Handler)tipc_subscr_start, 0); tipc_cfg_reinit(); info("Started in network mode\n");