kfilter_byfilter
kfilter = kfilter_byfilter(kev->filter);
kfilter = kfilter_byfilter(km->filter);
ATF_TP_ADD_TC(tp, kfilter_byfilter);
ATF_TC(kfilter_byfilter);
ATF_TC_HEAD(kfilter_byfilter, tc)
ATF_TC_BODY(kfilter_byfilter, tc)