/* Setup loopback of outgoing multicasts on a sending socket  */
static void set_mcast_loop(struct sock *sk, u_char loop)
/* Setup loopback of outgoing multicasts on a sending socket  */
static void set_mcast_loop(struct sock *sk, u_char loop)
{
	struct inet_sock *inet = inet_sk(sk);
	lock_sock(sk);
	inet->mc_loop = loop ? 1 : 0;
	release_sock(sk);
}