1 files changed, 13 insertions, 0 deletions

diff --git a/net/ipv4/tcp_ulp.c b/net/ipv4/tcp_ulp.c
index 3d8a1d835471..4849edb62d52 100644
--- 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);