1 files changed, 16 insertions, 0 deletions

diff --git a/net/ipv4/inet_connection_sock.c b/net/ipv4/inet_connection_sock.c
index 2026542d6836..d0670f00d524 100644
--- a/net/ipv4/inet_connection_sock.c
+++ b/net/ipv4/inet_connection_sock.c
@@ -710,6 +710,22 @@ void inet_csk_destroy_sock(struct sock *sk)
 }
 EXPORT_SYMBOL(inet_csk_destroy_sock);
 
+/* This function allows to force a closure of a socket after the call to
+ * tcp/dccp_create_openreq_child().
+ */
+void inet_csk_prepare_forced_close(struct sock *sk)
+{
+        /* sk_clone_lock locked the socket and set refcnt to 2 */
+        bh_unlock_sock(sk);
+        sock_put(sk);
+
+        /* The below has to be done to allow calling inet_csk_destroy_sock */
+        sock_set_flag(sk, SOCK_DEAD);
+        percpu_counter_inc(sk->sk_prot->orphan_count);
+        inet_sk(sk)->inet_num = 0;
+}
+EXPORT_SYMBOL(inet_csk_prepare_forced_close);
+
 int inet_csk_listen_start(struct sock *sk, const int nr_table_entries)
 {
         struct inet_sock *inet = inet_sk(sk);