V_pfr_kentry_z
V_pfr_kentry_z = uma_zcreate("pf table entries",
uma_zone_set_max(V_pfr_kentry_z, PFR_KENTRY_HIWAT);
V_pf_limits[PF_LIMIT_TABLE_ENTRIES].zone = V_pfr_kentry_z;
uma_zdestroy(V_pfr_kentry_z);
ke = uma_zalloc(V_pfr_kentry_z, M_NOWAIT | M_ZERO);
uma_zfree(V_pfr_kentry_z, ke);