hfi1_read_portcntrs
u32 hfi1_read_portcntrs(struct hfi1_pportdata *ppd, char **namep, u64 **cntrp);
avail = hfi1_read_portcntrs(dd->pport, &names, NULL);
avail = hfi1_read_portcntrs(ppd, NULL, &counters);
hfi1_read_portcntrs(ppd_from_ibp(ibp), NULL, &values);