tipc: make tipc random value aware of net namespace

After namespace is supported, each namespace should own its private
random value. So the global variable representing the random value
must be moved to tipc_net structure.

Signed-off-by: Ying Xue <ying.xue@windriver.com>
Tested-by: Tero Aho <Tero.Aho@coriant.com>
Reviewed-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1 insertions, 5 deletions

diff --git a/net/tipc/core.c b/net/tipc/core.c
index 4a8b7955e0e0..674bd2698528 100644
--- a/net/tipc/core.c
+++ b/net/tipc/core.c
@@ -44,9 +44,6 @@
 
 #include <linux/module.h>
 
-/* global variables used by multiple sub-systems within TIPC */
-int tipc_random __read_mostly;
-
 /* configurable TIPC parameters */
 int tipc_net_id __read_mostly;
 int sysctl_tipc_rmem[3] __read_mostly;  /* min/default/max */
@@ -58,6 +55,7 @@ static int __net_init tipc_init_net(struct net *net)
 
         tn->net_id = 4711;
         tn->own_addr = 0;
+        get_random_bytes(&tn->random, sizeof(int));
         INIT_LIST_HEAD(&tn->node_list);
         spin_lock_init(&tn->node_list_lock);
 
@@ -109,8 +107,6 @@ static int __init tipc_init(void)
                               TIPC_CRITICAL_IMPORTANCE;
         sysctl_tipc_rmem[2] = TIPC_CONN_OVERLOAD_LIMIT;
 
-        get_random_bytes(&tipc_random, sizeof(tipc_random));
-
         err = tipc_netlink_start();
         if (err)
                 goto out_netlink;