MWL_RXBUF
static int mwl_rxbuf = MWL_RXBUF; /* # rx buffers to allocate */
static int mwl_rxquota = MWL_RXBUF; /* # max buffers to process */
if (bootverbose || mwl_rxbuf != MWL_RXBUF)
#ifndef MWL_RXBUF