AAC_DIP2TRAN
#define AAC_DIP2SOFTS(dip) (AAC_TRAN2SOFTS(AAC_DIP2TRAN(dip)))
scsi_hba_tran_free(AAC_DIP2TRAN(dip));
scsi_hba_tran_t *tran = AAC_DIP2TRAN(dip);