rx_sw_desc
struct rx_sw_desc;
struct rx_sw_desc *sdesc;
sizeof(struct rx_sw_desc), &q->fl[0].phys_addr,
sizeof(struct rx_sw_desc), &q->fl[1].phys_addr,
struct rx_sw_desc *sd = &fl->sdesc[fl->cidx];
struct rx_sw_desc *sd = &fl->sdesc[fl->cidx];
struct rx_sw_desc *sd = &q->sdesc[q->pidx];
struct rx_sw_desc *d = &q->sdesc[cidx];