Function send_send

freebsd/netinet6/send.c:217–243

* Receive a SeND message from user space to be either send out by the kernel * or, with SeND ICMPv6 options removed, to be further processed by the icmp6 * input path. */

 * input path.
 */
static int
send_send(struct socket *so, int flags, struct mbuf *m, struct sockaddr *nam,
    struct mbuf *control, struct thread *td)
{
	struct sockaddr_send *sendsrc;
	struct ifnet *ifp;
	int error;

	KASSERT(V_send_so == so, ("%s: socket %p not send socket %p",
		__func__, so, V_send_so));

	sendsrc = (struct sockaddr_send *)nam;
	ifp = ifnet_byindex_ref(sendsrc->send_ifidx);
	if (ifp == NULL) {
		error = ENETUNREACH;
		goto err;
	}

	error = send_output(m, ifp, sendsrc->send_direction);
	if_rele(ifp);
	m = NULL;

err:
	if (m != NULL)
		m_freem(m);
	return (error);
}

static void
send_close(struct socket *so)