so_spliceidletv
so->so_spliceidletv = *tv;
timerclear(&so->so_spliceidletv);
if (timerisset(&so->so_spliceidletv)) {
TIMEVAL_TO_NSEC(&so->so_spliceidletv));
(*pr)("\tssp_idletv: %lld %ld\n", so->so_spliceidletv.tv_sec,
so->so_spliceidletv.tv_usec);