mpi2_sge_io_union
sg_chain->Length = (sizeof(mpi2_sge_io_union) *
(mpi2_sge_io_union *)(sc->sc_reply_pool_limit +
mpi2_sge_io_union SGL; /* 0x80 */
(sizeof(struct mfi_mpi2_request_raid_scsi_io) - sizeof(mpi2_sge_io_union))\
) / sizeof(mpi2_sge_io_union))
sizeof(mpi2_sge_io_union))
((MEGASAS_THUNDERBOLT_NEW_MSG_SIZE - sizeof(mpi2_sge_io_union)) / 16)
mpi2_sge_io_union *ccb_tb_sg_frame;