[spinel] restore the source match feature setting (#10055)

The RCP Restoration feature missed restoring the source address match
feature configuration. It causes the source match table to be disabled
by default after the RCP restarts. This commit restores the source
address match feature configuration.

src/lib/spinel/radio_spinel.cpp

@@ -93,6 +93,7 @@ RadioSpinel::RadioSpinel(void)
     , mRcpFailure(kRcpFailureNone)
     , mSrcMatchShortEntryCount(0)
     , mSrcMatchExtEntryCount(0)
+    , mSrcMatchEnabled(false)
     , mMacKeySet(false)
     , mCcaEnergyDetectThresholdSet(false)
     , mTransmitPowerSet(false)
@@ -100,6 +101,7 @@ RadioSpinel::RadioSpinel(void)
     , mFemLnaGainSet(false)
     , mEnergyScanning(false)
     , mMacFrameCounterSet(false)
+    , mSrcMatchSet(false)
 #endif
 #if OPENTHREAD_CONFIG_DIAG_ENABLE
     , mDiagMode(false)
@@ -944,7 +946,17 @@ exit:
 
 otError RadioSpinel::EnableSrcMatch(bool aEnable)
 {
-    return Set(SPINEL_PROP_MAC_SRC_MATCH_ENABLED, SPINEL_DATATYPE_BOOL_S, aEnable);
+    otError error;
+
+    SuccessOrExit(error = Set(SPINEL_PROP_MAC_SRC_MATCH_ENABLED, SPINEL_DATATYPE_BOOL_S, aEnable));
+
+#if OPENTHREAD_SPINEL_CONFIG_RCP_RESTORATION_MAX_COUNT > 0
+    mSrcMatchSet     = true;
+    mSrcMatchEnabled = aEnable;
+#endif
+
+exit:
+    return error;
 }
 
 otError RadioSpinel::AddSrcMatchShortEntry(uint16_t aShortAddress)
@@ -2077,6 +2089,11 @@ void RadioSpinel::RestoreProperties(void)
             Insert(SPINEL_PROP_MAC_SRC_MATCH_EXTENDED_ADDRESSES, SPINEL_DATATYPE_EUI64_S, mSrcMatchExtEntries[i].m8));
     }
 
+    if (mSrcMatchSet)
+    {
+        SuccessOrDie(Set(SPINEL_PROP_MAC_SRC_MATCH_ENABLED, SPINEL_DATATYPE_BOOL_S, mSrcMatchEnabled));
+    }
+
     if (mCcaEnergyDetectThresholdSet)
     {
         SuccessOrDie(Set(SPINEL_PROP_PHY_CCA_THRESHOLD, SPINEL_DATATYPE_INT8_S, mCcaEnergyDetectThreshold));

src/lib/spinel/radio_spinel.hpp

@@ -1278,6 +1278,7 @@ private:
     int8_t       mFemLnaGain;
     uint32_t     mMacFrameCounter;
     bool         mCoexEnabled : 1;
+    bool         mSrcMatchEnabled : 1;
 
     bool mMacKeySet : 1;                   ///< Whether MAC key has been set.
     bool mCcaEnergyDetectThresholdSet : 1; ///< Whether CCA energy detect threshold has been set.
@@ -1286,6 +1287,7 @@ private:
     bool mFemLnaGainSet : 1;               ///< Whether FEM LNA gain has been set.
     bool mEnergyScanning : 1;              ///< If fails while scanning, restarts scanning.
     bool mMacFrameCounterSet : 1;          ///< Whether the MAC frame counter has been set.
+    bool mSrcMatchSet : 1;                 ///< Whether the source match feature has been set.
 
 #endif // OPENTHREAD_SPINEL_CONFIG_RCP_RESTORATION_MAX_COUNT > 0