wdc_vul_power_t
.nf_off = offsetof(wdc_vul_power_t, pow_nsamples),
.nf_len = sizeof (((wdc_vul_power_t *)NULL)->pow_nsamples),
.nf_off = offsetof(wdc_vul_power_t, pow_samples[0]),
const wdc_vul_power_t *power = data;
sizeof (wdc_vul_power_t);
.nlfi_min = sizeof (wdc_vul_power_t),
*outp = (uint64_t)nsamp * sizeof (uint32_t) + sizeof (wdc_vul_power_t);