pcn_rx_desc_t
pcn_rx_desc_t *rmd = &pcnp->pcn_rxdescp[i];
PCN_RXRING * sizeof (pcn_rx_desc_t), DDI_DMA_SYNC_FORDEV);
size = PCN_RXRING * sizeof (pcn_rx_desc_t);
pcn_rx_desc_t *rmd;
pcn_rx_desc_t *pcn_rxdescp;
(index * sizeof (pcn_rx_desc_t)), sizeof (pcn_rx_desc_t), who)