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tipc: Introduce __tipc_nl_net_set

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

Signed-off-by: Ying Xue <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
This commit is contained in:
Ying Xue 2018-02-14 13:38:03 +08:00 • committed by David S. Miller
commit 5631f65dec
2 changed files with 13 additions and 3 deletions
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15
net/tipc/net.c
View file

@ -200,7 +200,7 @@ out:
return skb->len;
}
int tipc_nl_net_set(struct sk_buff *skb, struct genl_info *info)
int __tipc_nl_net_set(struct sk_buff *skb, struct genl_info *info)
{
struct net *net = sock_net(skb->sk);
struct tipc_net *tn = net_generic(net, tipc_net_id);
@ -241,10 +241,19 @@ int tipc_nl_net_set(struct sk_buff *skb, struct genl_info *info)
if (!tipc_addr_node_valid(addr))
return -EINVAL;
rtnl_lock();
tipc_net_start(net, addr);
rtnl_unlock();
}
return 0;
}
int tipc_nl_net_set(struct sk_buff *skb, struct genl_info *info)
{
int err;
rtnl_lock();
err = __tipc_nl_net_set(skb, info);
rtnl_unlock();
return err;
}

1
net/tipc/net.h
View file

@ -47,5 +47,6 @@ void tipc_net_stop(struct net *net);
int tipc_nl_net_dump(struct sk_buff *skb, struct netlink_callback *cb);
int tipc_nl_net_set(struct sk_buff *skb, struct genl_info *info);
int __tipc_nl_net_set(struct sk_buff *skb, struct genl_info *info);
#endif