[PATCH net v4 2/7] tipc: Introduce __tipc_nl_bearer_disable

[Ying Xue]

Introduce __tipc_nl_bearer_disable() which doesn't hold RTNL lock.

Signed-off-by: Ying Xue <ying....@windriver.com>
---
 net/tipc/bearer.c | 19 +++++++++++++------
 net/tipc/bearer.h |  1 +
 2 files changed, 14 insertions(+), 6 deletions(-)

diff --git a/net/tipc/bearer.c b/net/tipc/bearer.c
index c800147..61b6625 100644
--- a/net/tipc/bearer.c
+++ b/net/tipc/bearer.c
@@ -813,7 +813,7 @@ int tipc_nl_bearer_get(struct sk_buff *skb, struct 
genl_info *info)
        return err;
 }
 
-int tipc_nl_bearer_disable(struct sk_buff *skb, struct genl_info *info)
+int __tipc_nl_bearer_disable(struct sk_buff *skb, struct genl_info *info)
 {
        int err;
        char *name;
@@ -835,19 +835,26 @@ int tipc_nl_bearer_disable(struct sk_buff *skb, struct 
genl_info *info)
 
        name = nla_data(attrs[TIPC_NLA_BEARER_NAME]);
 
-       rtnl_lock();
        bearer = tipc_bearer_find(net, name);
-       if (!bearer) {
-               rtnl_unlock();
+       if (!bearer)
                return -EINVAL;
-       }
 
        bearer_disable(net, bearer);
-       rtnl_unlock();
 
        return 0;
 }
 
+int tipc_nl_bearer_disable(struct sk_buff *skb, struct genl_info *info)
+{
+       int err;
+
+       rtnl_lock();
+       err = __tipc_nl_bearer_disable(skb, info);
+       rtnl_unlock();
+
+       return err;
+}
+
 int tipc_nl_bearer_enable(struct sk_buff *skb, struct genl_info *info)
 {
        int err;
diff --git a/net/tipc/bearer.h b/net/tipc/bearer.h
index 42d6eee..bcc6d5f 100644
--- a/net/tipc/bearer.h
+++ b/net/tipc/bearer.h
@@ -188,6 +188,7 @@ extern struct tipc_media udp_media_info;
 #endif
 
 int tipc_nl_bearer_disable(struct sk_buff *skb, struct genl_info *info);
+int __tipc_nl_bearer_disable(struct sk_buff *skb, struct genl_info *info);
 int tipc_nl_bearer_enable(struct sk_buff *skb, struct genl_info *info);
 int tipc_nl_bearer_dump(struct sk_buff *skb, struct netlink_callback *cb);
 int tipc_nl_bearer_get(struct sk_buff *skb, struct genl_info *info);
-- 
2.7.4