[ncp] enable DHCPv6 PD support on the NCP (#12108)

src/lib/spinel/spinel.c

@@ -1514,6 +1514,8 @@ const char *spinel_prop_key_to_cstr(spinel_prop_key_t prop_key)
         {SPINEL_PROP_RCP_MAC_KEY, "RCP_MAC_KEY"},
         {SPINEL_PROP_DEBUG_LOG_TIMESTAMP_BASE, "DEBUG_LOG_TIMESTAMP_BASE"},
         {SPINEL_PROP_DEBUG_TREL_TEST_MODE_ENABLE, "DEBUG_TREL_TEST_MODE_ENABLE"},
+        {SPINEL_PROP_BORDER_ROUTER_DHCP6_PD_ENABLE, "SPINEL_PROP_BORDER_ROUTER_DHCP6_PD_ENABLE"},
+        {SPINEL_PROP_BORDER_ROUTER_DHCP6_PD_PREFIX, "SPINEL_PROP_BORDER_ROUTER_DHCP6_PD_PREFIX"},
         {0, NULL},
     };
 

src/lib/spinel/spinel.h

@@ -5014,6 +5014,32 @@ enum
 
     SPINEL_PROP_BACKBONE_ROUTER__END = 0x990,
 
+    SPINEL_PROP_BORDER_ROUTER__BEGIN = 0x990,
+
+    /// Enables or Disables DHCPv6 Prefix Delegation
+    /**
+     * Format: `b` - Write-Only
+     *
+     * `b`: Enables or disables DHCPv6 Prefix Delegation
+     */
+    SPINEL_PROP_BORDER_ROUTER_DHCP6_PD_ENABLE = SPINEL_PROP_BORDER_ROUTER__BEGIN + 1,
+
+    /// Process DHCPv6 Prefix Delegation Prefix
+    /**
+     * Format: `6CLL` - Write-Only
+     *
+     * This property is used to provide a DHCPv6 Prefix Delegation (PD) prefix to the OpenThread stack
+     * via the NCP interface. It calls `otPlatBorderRoutingProcessDhcp6PdPrefix()`.
+     *
+     * `6` : IPv6 prefix address
+     * `C` : Prefix length in bits
+     * `L` : Valid lifetime in seconds
+     * `L` : Preferred lifetime in seconds
+     */
+    SPINEL_PROP_BORDER_ROUTER_DHCP6_PD_PREFIX = SPINEL_PROP_BORDER_ROUTER__BEGIN + 2,
+
+    SPINEL_PROP_BORDER_ROUTER__END = 0x9A0,
+
     SPINEL_PROP_NEST__BEGIN = 0x3BC0,
 
     SPINEL_PROP_NEST_STREAM_MFG = SPINEL_PROP_NEST__BEGIN + 0,

src/ncp/ncp_base_dispatcher.cpp

@@ -555,6 +555,12 @@ NcpBase::PropertyHandler NcpBase::FindSetPropertyHandler(spinel_prop_key_t aKey)
 #if OPENTHREAD_CONFIG_BACKBONE_ROUTER_ENABLE
         OT_NCP_SET_HANDLER_ENTRY(SPINEL_PROP_BACKBONE_ROUTER_ENABLE),
 #endif
+#if OPENTHREAD_CONFIG_BORDER_ROUTING_ENABLE && OPENTHREAD_CONFIG_BORDER_ROUTING_DHCP6_PD_ENABLE
+        OT_NCP_SET_HANDLER_ENTRY(SPINEL_PROP_BORDER_ROUTER_DHCP6_PD_ENABLE),
+#if !OPENTHREAD_CONFIG_BORDER_ROUTING_DHCP6_PD_CLIENT_ENABLE
+        OT_NCP_SET_HANDLER_ENTRY(SPINEL_PROP_BORDER_ROUTER_DHCP6_PD_PREFIX),
+#endif
+#endif
 #endif // OPENTHREAD_FTD
 #if OPENTHREAD_MTD || OPENTHREAD_FTD
         OT_NCP_SET_HANDLER_ENTRY(SPINEL_PROP_UNSOL_UPDATE_FILTER),

src/ncp/ncp_base_ftd.cpp

@@ -1648,6 +1648,44 @@ template <> otError NcpBase::HandlePropertyGet<SPINEL_PROP_SRP_SERVER_AUTO_ENABL
 #endif // OPENTHREAD_CONFIG_BORDER_ROUTING_ENABLE
 #endif // OPENTHREAD_CONFIG_SRP_SERVER_ENABLE
 
+#if OPENTHREAD_CONFIG_BORDER_ROUTING_ENABLE && OPENTHREAD_CONFIG_BORDER_ROUTING_DHCP6_PD_ENABLE
+template <> otError NcpBase::HandlePropertySet<SPINEL_PROP_BORDER_ROUTER_DHCP6_PD_ENABLE>(void)
+{
+    otError error = OT_ERROR_NONE;
+    bool    enable;
+
+    SuccessOrExit(error = mDecoder.ReadBool(enable));
+    otBorderRoutingDhcp6PdSetEnabled(mInstance, enable);
+
+exit:
+    return error;
+}
+
+#if !OPENTHREAD_CONFIG_BORDER_ROUTING_DHCP6_PD_CLIENT_ENABLE
+template <> otError NcpBase::HandlePropertySet<SPINEL_PROP_BORDER_ROUTER_DHCP6_PD_PREFIX>(void)
+{
+    otError                         error = OT_ERROR_NONE;
+    otBorderRoutingPrefixTableEntry prefixEntry;
+    const otIp6Address             *prefixAddr;
+
+    memset(&prefixEntry, 0, sizeof(prefixEntry));
+
+    SuccessOrExit(error = mDecoder.ReadIp6Address(prefixAddr));
+    prefixEntry.mPrefix.mPrefix = *prefixAddr;
+    SuccessOrExit(error = mDecoder.ReadUint8(prefixEntry.mPrefix.mLength));
+
+    SuccessOrExit(error = mDecoder.ReadUint32(prefixEntry.mValidLifetime));
+    SuccessOrExit(error = mDecoder.ReadUint32(prefixEntry.mPreferredLifetime));
+
+    otPlatBorderRoutingProcessDhcp6PdPrefix(mInstance, &prefixEntry);
+
+exit:
+    return error;
+}
+#endif
+
+#endif // OPENTHREAD_CONFIG_BORDER_ROUTING_ENABLE && OPENTHREAD_CONFIG_BORDER_ROUTING_DHCP6_PD_ENABLE
+
 #if OPENTHREAD_CONFIG_NCP_DNSSD_ENABLE && OPENTHREAD_CONFIG_PLATFORM_DNSSD_ENABLE
 
 void NcpBase::DnssdRegisterHost(const otPlatDnssdHost      *aHost,