rcvDesc_t
rcvDesc_t *desc_head;
rcvDesc_t *pdesc;
sizeof (rcvDesc_t), /* unit_size */
rcvDesc_t *pdesc;
count, rcv_desc->MaxRxDescCount, sizeof (rcvDesc_t),
size = (sizeof (rcvDesc_t) * adapter->MaxRxDescCount);
rcv_desc->desc_head = (rcvDesc_t *)addr;