Qt/Options: Configure limitdescendant{count,size} using rwconf

src/qt/optionsdialog.cpp

@@ -245,6 +245,16 @@ OptionsDialog::OptionsDialog(QWidget* parent, bool enableWallet)
     limitancestorsize->setMaximum(std::numeric_limits<int>::max());
     CreateOptionUI(verticalLayout_Spamfiltering, limitancestorsize, tr("Ignore transactions whose size with all unconfirmed ancestors exceeds %s kilobytes."));
 
+    limitdescendantcount = new QSpinBox(groupBox_Spamfiltering);
+    limitdescendantcount->setMinimum(1);
+    limitdescendantcount->setMaximum(std::numeric_limits<int>::max());
+    CreateOptionUI(verticalLayout_Spamfiltering, limitdescendantcount, tr("Ignore transactions if any ancestor would have %s or more unconfirmed descendants."));
+
+    limitdescendantsize = new QSpinBox(groupBox_Spamfiltering);
+    limitdescendantsize->setMinimum(1);
+    limitdescendantsize->setMaximum(std::numeric_limits<int>::max());
+    CreateOptionUI(verticalLayout_Spamfiltering, limitdescendantsize, tr("Ignore transactions if any ancestor would have more than %s kilobytes of unconfirmed descendants."));
+
     verticalLayout_Mempool->addWidget(groupBox_Spamfiltering);
 
     verticalLayout_Mempool->addItem(new QSpacerItem(20, 40, QSizePolicy::Minimum, QSizePolicy::Expanding));
@@ -492,6 +502,8 @@ void OptionsDialog::setMapper()
     mapper->addMapping(bytespersigopstrict, OptionsModel::bytespersigopstrict);
     mapper->addMapping(limitancestorcount, OptionsModel::limitancestorcount);
     mapper->addMapping(limitancestorsize, OptionsModel::limitancestorsize);
+    mapper->addMapping(limitdescendantcount, OptionsModel::limitdescendantcount);
+    mapper->addMapping(limitdescendantsize, OptionsModel::limitdescendantsize);
 
     /* Window */
 #ifndef Q_OS_MACOS

src/qt/optionsdialog.h

@@ -98,6 +98,8 @@ private:
     QSpinBox *bytespersigop, *bytespersigopstrict;
     QSpinBox *limitancestorcount;
     QSpinBox *limitancestorsize;
+    QSpinBox *limitdescendantcount;
+    QSpinBox *limitdescendantsize;
 };
 
 #endif // BITCOIN_QT_OPTIONSDIALOG_H

src/qt/optionsmodel.cpp

@@ -629,6 +629,10 @@ QVariant OptionsModel::getOption(OptionID option, const std::string& suffix) con
         return qlonglong(node().mempool().m_limits.ancestor_count);
     case limitancestorsize:
         return qlonglong(node().mempool().m_limits.ancestor_size_vbytes / 1'000);
+    case limitdescendantcount:
+        return qlonglong(node().mempool().m_limits.descendant_count);
+    case limitdescendantsize:
+        return qlonglong(node().mempool().m_limits.descendant_size_vbytes / 1'000);
     default:
         return QVariant();
     }
@@ -1039,6 +1043,24 @@ bool OptionsModel::setOption(OptionID option, const QVariant& value, const std::
             gArgs.ModifyRWConfigFile("limitancestorsize", strNv);
         }
         break;
+    case limitdescendantcount:
+        if (changed()) {
+            long long nNv = value.toLongLong();
+            std::string strNv = value.toString().toStdString();
+            node().mempool().m_limits.descendant_count = nNv;
+            gArgs.ForceSetArg("-limitdescendantcount", strNv);
+            gArgs.ModifyRWConfigFile("limitdescendantcount", strNv);
+        }
+        break;
+    case limitdescendantsize:
+        if (changed()) {
+            long long nNv = value.toLongLong();
+            std::string strNv = value.toString().toStdString();
+            node().mempool().m_limits.descendant_size_vbytes = nNv * 1'000;
+            gArgs.ForceSetArg("-limitdescendantsize", strNv);
+            gArgs.ModifyRWConfigFile("limitdescendantsize", strNv);
+        }
+        break;
     default:
         break;
     }

src/qt/optionsmodel.h

@@ -89,6 +89,8 @@ public:
         bytespersigopstrict,
         limitancestorcount,
         limitancestorsize,
+        limitdescendantcount,
+        limitdescendantsize,
         OptionIDRowCount,
     };