Function protosw_init

freebsd/kern/uipc_domain.c:107–163

};

static void
protosw_init(struct protosw *pr)
{
	struct pr_usrreqs *pu;

	pu = pr->pr_usrreqs;
	KASSERT(pu != NULL, ("protosw_init: %ssw[%d] has no usrreqs!",
	    pr->pr_domain->dom_name,
	    (int)(pr - pr->pr_domain->dom_protosw)));

	/*
	 * Protocol switch methods fall into three categories: mandatory,
	 * mandatory but protosw_init() provides a default, and optional.
	 *
	 * For true protocols (i.e., pru_attach != NULL), KASSERT truly
	 * mandatory methods with no defaults, and initialize defaults for
	 * other mandatory methods if the protocol hasn't defined an
	 * implementation (NULL function pointer).
	 */
#if 0
	if (pu->pru_attach != NULL) {
		KASSERT(pu->pru_abort != NULL,
		    ("protosw_init: %ssw[%d] pru_abort NULL",
		    pr->pr_domain->dom_name,
		    (int)(pr - pr->pr_domain->dom_protosw)));
		KASSERT(pu->pru_send != NULL,
		    ("protosw_init: %ssw[%d] pru_send NULL",
		    pr->pr_domain->dom_name,
		    (int)(pr - pr->pr_domain->dom_protosw)));
	}
#endif

#define DEFAULT(foo, bar)	if ((foo) == NULL)  (foo) = (bar)
	DEFAULT(pu->pru_accept, pru_accept_notsupp);
	DEFAULT(pu->pru_aio_queue, pru_aio_queue_notsupp);
	DEFAULT(pu->pru_bind, pru_bind_notsupp);
	DEFAULT(pu->pru_bindat, pru_bindat_notsupp);
	DEFAULT(pu->pru_connect, pru_connect_notsupp);
	DEFAULT(pu->pru_connect2, pru_connect2_notsupp);
	DEFAULT(pu->pru_connectat, pru_connectat_notsupp);
	DEFAULT(pu->pru_control, pru_control_notsupp);
	DEFAULT(pu->pru_disconnect, pru_disconnect_notsupp);
	DEFAULT(pu->pru_listen, pru_listen_notsupp);
	DEFAULT(pu->pru_peeraddr, pru_peeraddr_notsupp);
	DEFAULT(pu->pru_rcvd, pru_rcvd_notsupp);
	DEFAULT(pu->pru_rcvoob, pru_rcvoob_notsupp);
	DEFAULT(pu->pru_sense, pru_sense_null);
	DEFAULT(pu->pru_shutdown, pru_shutdown_notsupp);
	DEFAULT(pu->pru_sockaddr, pru_sockaddr_notsupp);
	DEFAULT(pu->pru_sosend, sosend_generic);
	DEFAULT(pu->pru_soreceive, soreceive_generic);
	DEFAULT(pu->pru_sopoll, sopoll_generic);
	DEFAULT(pu->pru_ready, pru_ready_notsupp);
#undef DEFAULT
	if (pr->pr_init)
		(*pr->pr_init)();
}