unmap_blk_descr_t
num_descr * sizeof (unmap_blk_descr_t);
static inline unmap_blk_descr_t *
return ((unmap_blk_descr_t *)((uintptr_t)buf +
sizeof (unmap_param_hdr_t) + (i * sizeof (unmap_blk_descr_t))));
unmap_blk_descr_t *ubd;
((UINT16_MAX - sizeof (unmap_param_hdr_t)) / sizeof (unmap_blk_descr_t))
SD_UNMAP_MAX_DESCR * sizeof (unmap_blk_descr_t))