netdev - [PATCH net-next 03/11] tipc: use RTNL lock to protect tipc_net

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Date:	Mon, 21 Apr 2014 10:55:44 +0800
From:	Ying Xue <ying.xue@...driver.com>
To:	<davem@...emloft.net>
CC:	<jon.maloy@...csson.com>, <Paul.Gortmaker@...driver.com>,
	<erik.hugne@...csson.com>, <netdev@...r.kernel.org>,
	<tipc-discussion@...ts.sourceforge.net>
Subject: [PATCH net-next 03/11] tipc: use RTNL lock to protect tipc_net_stop routine

As the tipc network initialization(ie, tipc_net_start routine) is
under RTNL protection, its corresponding deinitialization part(ie,
tipc_net_stop routine) should be protected by RTNL too.

Signed-off-by: Ying Xue <ying.xue@...driver.com>
Reviewed-by: Jon Maloy <jon.maloy@...csson.com>
Reviewed-by: Erik Hugne <erik.hugne@...csson.com>
Tested-by: Erik Hugne <erik.hugne@...csson.com>
---
 net/tipc/net.c |    2 ++
 1 file changed, 2 insertions(+)

diff --git a/net/tipc/net.c b/net/tipc/net.c
index 4c564eb..24d2d21 100644
--- a/net/tipc/net.c
+++ b/net/tipc/net.c
@@ -195,11 +195,13 @@ void tipc_net_stop(void)
 		return;
 
 	tipc_nametbl_withdraw(TIPC_CFG_SRV, tipc_own_addr, 0, tipc_own_addr);
+	rtnl_lock();
 	write_lock_bh(&tipc_net_lock);
 	tipc_bearer_stop();
 	tipc_bclink_stop();
 	tipc_node_stop();
 	write_unlock_bh(&tipc_net_lock);
+	rtnl_unlock();
 
 	pr_info("Left network mode\n");
 }
-- 
1.7.9.5

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