tipc: Optimize re-initialization of configuration service

Streamlines the job of re-initializing TIPC's configuration service
when a node's network address is first assigned. Rather than destroying
the configuration server port and then recreating it, TIPC now simply
withdraws the existing {0,<0.0.0>} name publication and creates a new
{0,<Z.C.N>} name publication that identifies the node's network address
to interested subscribers.

Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>

1 files changed, 15 insertions, 0 deletions

diff --git a/net/tipc/config.c b/net/tipc/config.c
index f5458eddd7bc..a4988cdbde6d 100644
--- a/net/tipc/config.c
+++ b/net/tipc/config.c
@@ -489,6 +489,21 @@ failed:
         return res;
 }
 
+void tipc_cfg_reinit(void)
+{
+        struct tipc_name_seq seq;
+        int res;
+
+        seq.type = TIPC_CFG_SRV;
+        seq.lower = seq.upper = 0;
+        tipc_withdraw(config_port_ref, TIPC_ZONE_SCOPE, &seq);
+
+        seq.lower = seq.upper = tipc_own_addr;
+        res = tipc_publish(config_port_ref, TIPC_ZONE_SCOPE, &seq);
+        if (res)
+                err("Unable to reinitialize configuration service\n");
+}
+
 void tipc_cfg_stop(void)
 {
         if (config_port_ref) {