wpi_tx_desc_t
wpi_tx_desc_t *desc_h;
err = wpi_alloc_dma_mem(sc, count * sizeof (wpi_tx_desc_t),
desc_h = (wpi_tx_desc_t *)ring->dma_desc.mem_va;
wpi_tx_desc_t desc;
wpi_tx_desc_t *desc;
wpi_tx_desc_t *desc;
wpi_tx_desc_t *desc;
wpi_tx_desc_t *desc;