USCSI_HEAD
cmd->uscsi_flags |= USCSI_HEAD|USCSI_HTAG;
if (uscmd->uscsi_flags & USCSI_HEAD) {
ucmd_buf.uscsi_flags |= USCSI_HEAD;
USCSI_OTAG | USCSI_HTAG | USCSI_HEAD));
USCSI_OTAG | USCSI_HTAG | USCSI_HEAD);
if (uscsi.uscsi_flags & USCSI_HEAD)
uscsi->uscsi_flags |= USCSI_HEAD;