PF_SL_INUSE - FreeBSD

Symbol: PF_SL_INUSE

lib/libpfctl/libpfctl.c

{ .type = PF_SL_INUSE, .off = _OUT(inuse), .cb = snl_attr_get_uint32 },

sys/netpfil/pf/pf_nl.c

nlattr_add_u32(nw, PF_SL_INUSE, attrs.inuse);