Function iflib_altq_if_start

freebsd/net/iflib.c:4174–4187

* The overall approach to integrating iflib with ALTQ is to continue to use * the iflib mp_ring machinery between the ALTQ queue(s) and the hardware * ring. Technically, when using ALTQ, queueing to an intermediate mp_ring * is redundant/unnecessary, but doing so minimizes the amount of * ALTQ-specific code required in iflib. It is assumed that the overhead of * redundantly queueing to an i

 *
 */
static void
iflib_altq_if_start(if_t ifp)
{
	struct ifaltq *ifq = &ifp->if_snd;
	struct mbuf *m;

	IFQ_LOCK(ifq);
	IFQ_DEQUEUE_NOLOCK(ifq, m);
	while (m != NULL) {
		iflib_if_transmit(ifp, m);
		IFQ_DEQUEUE_NOLOCK(ifq, m);
	}
	IFQ_UNLOCK(ifq);
}

static int
iflib_altq_if_transmit(if_t ifp, struct mbuf *m)