PF_SRC_AF
{ .type = PF_SRC_AF, .off = _OUT(af), .cb = snl_attr_get_uint8 },
{ .type = PF_SRC_AF, .off = _OUT(af), .cb = nlattr_get_uint8 },
nlattr_add_u8(nw, PF_SRC_AF, pfsr->pfsr_af);