tipc: introduce per-link spinlock

[cascardo/linux.git] / net / tipc / link.c

diff --git a/net/tipc/link.c b/net/tipc/link.c
index fa452fb..b5e895c 100644 (file)
--- a/net/tipc/link.c
+++ b/net/tipc/link.c
@@ -1995,6 +1995,7 @@ int tipc_nl_link_reset_stats(struct sk_buff *skb, struct genl_info *info)
        struct tipc_node *node;
        struct nlattr *attrs[TIPC_NLA_LINK_MAX + 1];
        struct net *net = sock_net(skb->sk);
+       struct tipc_link_entry *le;
 
        if (!info->attrs[TIPC_NLA_LINK])
                return -EINVAL;
@@ -2020,17 +2021,17 @@ int tipc_nl_link_reset_stats(struct sk_buff *skb, struct genl_info *info)
        node = tipc_link_find_owner(net, link_name, &bearer_id);
        if (!node)
                return -EINVAL;
-
+       le = &node->links[bearer_id];
        tipc_node_lock(node);
-
-       link = node->links[bearer_id].link;
+       spin_lock_bh(&le->lock);
+       link = le->link;
        if (!link) {
                tipc_node_unlock(node);
                return -EINVAL;
        }
 
        link_reset_statistics(link);
-
+       spin_unlock_bh(&le->lock);
        tipc_node_unlock(node);
 
        return 0;