bpf: sockmap/tls, close can race with map free

[linux-2.6-microblaze.git] / net / ipv4 / tcp_ulp.c

diff --git a/net/ipv4/tcp_ulp.c b/net/ipv4/tcp_ulp.c
index 3d8a1d8..4849edb 100644 (file)
--- a/net/ipv4/tcp_ulp.c
+++ b/net/ipv4/tcp_ulp.c
@@ -96,6 +96,19 @@ void tcp_get_available_ulp(char *buf, size_t maxlen)
        rcu_read_unlock();
 }
 
+void tcp_update_ulp(struct sock *sk, struct proto *proto)
+{
+       struct inet_connection_sock *icsk = inet_csk(sk);
+
+       if (!icsk->icsk_ulp_ops) {
+               sk->sk_prot = proto;
+               return;
+       }
+
+       if (icsk->icsk_ulp_ops->update)
+               icsk->icsk_ulp_ops->update(sk, proto);
+}
+
 void tcp_cleanup_ulp(struct sock *sk)
 {
        struct inet_connection_sock *icsk = inet_csk(sk);