GRANT_INVALID_REF
KASSERT(req->rxreq_gntref != GRANT_INVALID_REF);
req->rxreq_gntref = GRANT_INVALID_REF;
req->txreq_gntref = GRANT_INVALID_REF;
rxreq->rxreq_gntref = GRANT_INVALID_REF;
sc->sc_tx_ring_gntref = GRANT_INVALID_REF;
sc->sc_rx_ring_gntref = GRANT_INVALID_REF;
KASSERT(req->rxreq_gntref == GRANT_INVALID_REF);
if (rxreq->rxreq_gntref != GRANT_INVALID_REF) {
rxreq->rxreq_gntref = GRANT_INVALID_REF;
req->txreq_gntref = GRANT_INVALID_REF;
sc->sc_ring_gntref = GRANT_INVALID_REF;
sc->sc_shared_gntref = GRANT_INVALID_REF;