diff --git a/cpu/ixp/npe/IxEthDBNPEAdaptor.c b/cpu/ixp/npe/IxEthDBNPEAdaptor.c
new file mode 100644
index 0000000..112a46c
--- /dev/null
+++ b/cpu/ixp/npe/IxEthDBNPEAdaptor.c
@@ -0,0 +1,719 @@
+/**
+ * @file IxEthDBDBNPEAdaptor.c
+ *
+ * @brief Routines that read and write learning/search trees in NPE-specific format
+ * 
+ * @par
+ * IXP400 SW Release version 2.0
+ * 
+ * -- Copyright Notice --
+ * 
+ * @par
+ * Copyright 2001-2005, Intel Corporation.
+ * All rights reserved.
+ * 
+ * @par
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the Intel Corporation nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ * 
+ * @par
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS''
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ * 
+ * @par
+ * -- End of Copyright Notice --
+ */
+
+#include "IxEthDB_p.h"
+#include "IxEthDBLog_p.h"
+
+/* forward prototype declarations */
+IX_ETH_DB_PUBLIC void ixEthDBELTShow(IxEthDBPortId portID);
+IX_ETH_DB_PUBLIC void ixEthDBShowNpeMsgHistory(void);
+
+/* data */
+UINT8* ixEthDBNPEUpdateArea[IX_ETH_DB_NUMBER_OF_PORTS];
+UINT32 dumpEltSize;
+
+/* private data */
+IX_ETH_DB_PRIVATE IxEthDBNoteWriteFn ixEthDBNPENodeWrite[IX_ETH_DB_MAX_RECORD_TYPE_INDEX + 1];
+
+#define IX_ETH_DB_MAX_DELTA_ZONES (6) /* at most 6 EP Delta zones, according to NPE FS */
+IX_ETH_DB_PRIVATE UINT32 ixEthDBEPDeltaOffset[IX_ETH_DB_MAX_RECORD_TYPE_INDEX + 1][IX_ETH_DB_MAX_DELTA_ZONES]; 
+IX_ETH_DB_PRIVATE UINT32 ixEthDBEPDelta[IX_ETH_DB_MAX_RECORD_TYPE_INDEX + 1][IX_ETH_DB_MAX_DELTA_ZONES];
+
+/**
+ * @brief allocates non-cached or contiguous NPE tree update areas for all the ports
+ *
+ * This function is called only once at initialization time from
+ * @ref ixEthDBInit().
+ *
+ * @warning do not call manually
+ *
+ * @see ixEthDBInit()
+ *
+ * @internal
+ */
+IX_ETH_DB_PUBLIC
+void ixEthDBNPEUpdateAreasInit(void)
+{
+    UINT32 portIndex;
+    PortUpdateMethod *update;
+
+    for (portIndex = 0 ; portIndex < IX_ETH_DB_NUMBER_OF_PORTS ; portIndex++)
+    {
+        update = &ixEthDBPortInfo[portIndex].updateMethod;
+
+        if (ixEthDBPortDefinitions[portIndex].type == IX_ETH_NPE)
+        {
+            update->npeUpdateZone   = IX_OSAL_CACHE_DMA_MALLOC(FULL_ELT_BYTE_SIZE);
+            update->npeGwUpdateZone = IX_OSAL_CACHE_DMA_MALLOC(FULL_GW_BYTE_SIZE);
+            update->vlanUpdateZone  = IX_OSAL_CACHE_DMA_MALLOC(FULL_VLAN_BYTE_SIZE);
+
+            if (update->npeUpdateZone == NULL
+                || update->npeGwUpdateZone == NULL
+                || update->vlanUpdateZone == NULL)
+            {
+                ERROR_LOG("Fatal error: IX_ACC_DRV_DMA_MALLOC() returned NULL, no NPE update zones available\n");
+            }
+            else
+            {
+                memset(update->npeUpdateZone, 0, FULL_ELT_BYTE_SIZE);
+                memset(update->npeGwUpdateZone, 0, FULL_GW_BYTE_SIZE);
+                memset(update->vlanUpdateZone, 0, FULL_VLAN_BYTE_SIZE);
+            }
+        }
+        else
+        {
+            /* unused */
+            update->npeUpdateZone   = NULL;
+            update->npeGwUpdateZone = NULL;
+            update->vlanUpdateZone  = NULL;
+        }
+    }
+}
+
+/**
+ * @brief deallocates the NPE update areas for all the ports
+ *
+ * This function is called at component de-initialization time
+ * by @ref ixEthDBUnload().
+ *
+ * @warning do not call manually
+ *
+ * @internal
+ */
+IX_ETH_DB_PUBLIC
+void ixEthDBNPEUpdateAreasUnload(void)
+{
+    UINT32 portIndex;
+
+    for (portIndex = 0 ; portIndex < IX_ETH_DB_NUMBER_OF_PORTS ; portIndex++)
+    {
+        if (ixEthDBPortDefinitions[portIndex].type == IX_ETH_NPE)
+        {
+            IX_OSAL_CACHE_DMA_FREE(ixEthDBPortInfo[portIndex].updateMethod.npeUpdateZone);
+            IX_OSAL_CACHE_DMA_FREE(ixEthDBPortInfo[portIndex].updateMethod.npeGwUpdateZone);
+            IX_OSAL_CACHE_DMA_FREE(ixEthDBPortInfo[portIndex].updateMethod.vlanUpdateZone);
+        }
+    }
+}
+
+/**
+ * @brief general-purpose NPE callback function
+ *
+ * @param npeID NPE ID
+ * @param msg NPE message
+ *
+ * This function will unblock the caller by unlocking
+ * the npeAckLock mutex defined for each NPE port
+ *
+ * @internal
+ */
+IX_ETH_DB_PUBLIC
+void ixEthDBNpeMsgAck(IxNpeMhNpeId npeID, IxNpeMhMessage msg)
+{
+    IxEthDBPortId portID = IX_ETH_DB_NPE_TO_PORT_ID(npeID);
+    PortInfo *portInfo;
+
+    if (portID >= IX_ETH_DB_NUMBER_OF_PORTS)
+    {
+        /* invalid port */
+        return;
+    }
+
+    if (ixEthDBPortDefinitions[portID].type != IX_ETH_NPE)
+    {
+        /* not an NPE */
+        return;
+    }
+
+    portInfo = &ixEthDBPortInfo[portID];
+    
+    ixOsalMutexUnlock(&portInfo->npeAckLock);
+}
+
+/**
+ * @brief synchronizes the database with tree
+ *
+ * @param portID port ID of the NPE whose tree is to be scanned
+ * @param eltBaseAddress memory base address of the NPE serialized tree
+ * @param eltSize size in bytes of the NPE serialized tree
+ *
+ * Scans the NPE learning tree and resets the age of active database records.
+ *
+ * @internal
+ */
+IX_ETH_DB_PUBLIC
+void ixEthDBNPESyncScan(IxEthDBPortId portID, void *eltBaseAddress, UINT32 eltSize)
+{
+    UINT32 eltEntryOffset;
+    UINT32 entryPortID;
+
+    /* invalidate cache */
+    IX_OSAL_CACHE_INVALIDATE(eltBaseAddress, eltSize);
+
+    for (eltEntryOffset = ELT_ROOT_OFFSET ; eltEntryOffset < eltSize ; eltEntryOffset += ELT_ENTRY_SIZE)
+    {
+        /* (eltBaseAddress + eltEntryOffset) points to a valid NPE tree node
+         *
+         * the format of the node is MAC[6 bytes]:PortID[1 byte]:Reserved[6 bits]:Active[1 bit]:Valid[1 bit]
+         * therefore we can just use the pointer for database searches as only the first 6 bytes are checked
+         */
+        void *eltNodeAddress       = (void *) ((UINT32) eltBaseAddress + eltEntryOffset);
+
+        /* debug */
+        IX_ETH_DB_NPE_VERBOSE_TRACE("DB: (NPEAdaptor) checking node at offset %d...\n", eltEntryOffset / ELT_ENTRY_SIZE);
+
+        if (IX_EDB_NPE_NODE_VALID(eltNodeAddress) != TRUE)
+        {
+            IX_ETH_DB_NPE_VERBOSE_TRACE("\t... node is empty\n");
+        }
+        else if (eltEntryOffset == ELT_ROOT_OFFSET)
+        {
+            IX_ETH_DB_NPE_VERBOSE_TRACE("\t... node is root\n");
+        }
+
+        if (IX_EDB_NPE_NODE_VALID(eltNodeAddress))
+        {
+            entryPortID = IX_ETH_DB_NPE_LOGICAL_ID_TO_PORT_ID(IX_EDB_NPE_NODE_PORT_ID(eltNodeAddress));
+
+            /* check only active entries belonging to this port */
+            if (ixEthDBPortInfo[portID].agingEnabled && IX_EDB_NPE_NODE_ACTIVE(eltNodeAddress) && (portID == entryPortID)
+                && ((ixEthDBPortDefinitions[portID].capabilities & IX_ETH_ENTRY_AGING) == 0))
+            {
+                /* search record */
+                HashNode *node = ixEthDBSearch((IxEthDBMacAddr *) eltNodeAddress, IX_ETH_DB_ALL_FILTERING_RECORDS);
+
+                /* safety check, maybe user deleted record right before sync? */
+                if (node != NULL)
+                {
+                    /* found record */
+                    MacDescriptor *descriptor = (MacDescriptor *) node->data;
+
+                    IX_ETH_DB_NPE_VERBOSE_TRACE("DB: (NPEAdaptor) synced entry [%s] already in the database, updating fields\n", mac2string(eltNodeAddress));
+
+                    /* reset age - set to -1 so that maintenance will restore it to 0 (or more) when incrementing */
+                    if (!descriptor->recordData.filteringData.staticEntry)
+                    {
+                        if (descriptor->type == IX_ETH_DB_FILTERING_RECORD)
+                        {
+                            descriptor->recordData.filteringData.age = AGE_RESET;
+                        }
+                        else if (descriptor->type == IX_ETH_DB_FILTERING_VLAN_RECORD)
+                        {
+                            descriptor->recordData.filteringVlanData.age = AGE_RESET;
+                        }
+                    }
+
+                    /* end transaction */
+                    ixEthDBReleaseHashNode(node);
+                }
+            }
+            else
+            {
+                IX_ETH_DB_NPE_VERBOSE_TRACE("\t... found portID %d, we check only port %d\n", entryPortID, portID);
+            }
+        }
+    }
+}
+
+/**
+ * @brief writes a search tree in NPE format
+ *
+ * @param type type of records to be written into the NPE update zone
+ * @param totalSize maximum size of the linearized tree
+ * @param baseAddress memory base address where to write the NPE tree into
+ * @param tree search tree to write in NPE format
+ * @param blocks number of written 64-byte blocks
+ * @param startIndex optimal binary search start index
+ *
+ * Serializes the given tree in NPE linear format
+ *
+ * @return none
+ *
+ * @internal
+ */
+IX_ETH_DB_PUBLIC
+void ixEthDBNPETreeWrite(IxEthDBRecordType type, UINT32 totalSize, void *baseAddress, MacTreeNode *tree, UINT32 *epDelta, UINT32 *blocks)
+{
+    MacTreeNodeStack *stack;
+    UINT32 maxOffset = 0;
+    UINT32 emptyOffset;
+
+    stack = ixOsalCacheDmaMalloc(sizeof (MacTreeNodeStack));
+    
+    if (stack == NULL)
+    {
+        ERROR_LOG("DB: (NPEAdaptor) failed to allocate the node stack for learning tree linearization, out of memory?\n");
+        return;
+    }
+
+    /* zero out empty root */
+    memset(baseAddress, 0, ELT_ENTRY_SIZE);
+
+    NODE_STACK_INIT(stack);
+
+    if (tree != NULL)
+    {
+        /* push tree root at offset 1 */
+        NODE_STACK_PUSH(stack, tree, 1);
+
+        maxOffset = 1;
+    }
+
+    while (NODE_STACK_NONEMPTY(stack))
+    {
+        MacTreeNode *node;
+        UINT32 offset;
+
+        NODE_STACK_POP(stack, node, offset);
+
+        /* update maximum offset */
+        if (offset > maxOffset)
+        {
+            maxOffset = offset;
+        }
+
+        IX_ETH_DB_NPE_VERBOSE_TRACE("DB: (NPEAdaptor) writing MAC [%s] at offset %d\n", mac2string(node->descriptor->macAddress), offset);
+
+        /* add node to NPE ELT at position indicated by offset */
+        if (offset < MAX_ELT_SIZE)
+        {
+            ixEthDBNPENodeWrite[type]((void *) (((UINT32) baseAddress) + offset * ELT_ENTRY_SIZE), node);
+        }
+
+        if (node->left != NULL)
+        {
+            NODE_STACK_PUSH(stack, node->left, LEFT_CHILD_OFFSET(offset));
+        }
+        else
+        {
+            /* ensure this entry is zeroed */
+            memset((void *) ((UINT32) baseAddress + LEFT_CHILD_OFFSET(offset) * ELT_ENTRY_SIZE), 0, ELT_ENTRY_SIZE);
+        }
+
+        if (node->right != NULL)
+        {
+            NODE_STACK_PUSH(stack, node->right, RIGHT_CHILD_OFFSET(offset));
+        }
+        else
+        {
+            /* ensure this entry is zeroed */
+            memset((void *) ((UINT32) baseAddress + RIGHT_CHILD_OFFSET(offset) * ELT_ENTRY_SIZE), 0, ELT_ENTRY_SIZE);
+        }
+    }
+    
+    emptyOffset = maxOffset + 1;
+
+    /* zero out rest of the tree */
+    IX_ETH_DB_NPE_TRACE("DB: (NPEAdaptor) Emptying tree from offset %d, address 0x%08X, %d bytes\n", 
+        emptyOffset, ((UINT32) baseAddress) + emptyOffset * ELT_ENTRY_SIZE, totalSize - (emptyOffset * ELT_ENTRY_SIZE));
+
+    if (emptyOffset < MAX_ELT_SIZE - 1)
+    {
+        memset((void *) (((UINT32) baseAddress) + (emptyOffset * ELT_ENTRY_SIZE)), 0, totalSize - (emptyOffset * ELT_ENTRY_SIZE));
+    }
+
+    /* flush cache */
+    IX_OSAL_CACHE_FLUSH(baseAddress, totalSize);
+
+    /* debug */
+    IX_ETH_DB_NPE_TRACE("DB: (NPEAdaptor) Ethernet learning/filtering tree XScale wrote at address 0x%08X (max %d bytes):\n\n",
+        (UINT32) baseAddress, FULL_ELT_BYTE_SIZE);
+
+    IX_ETH_DB_NPE_DUMP_ELT(baseAddress, FULL_ELT_BYTE_SIZE);
+    
+    /* compute number of 64-byte blocks */
+    if (blocks != NULL)
+    {
+        *blocks = maxOffset != 0 ? 1 + maxOffset / 8 : 0;
+
+        IX_ETH_DB_NPE_TRACE("DB: (NPEAdaptor) Wrote %d 64-byte blocks\n", *blocks);
+    }
+    
+    /* compute epDelta - start index for binary search */
+    if (epDelta != NULL)
+    {
+        UINT32 deltaIndex = 0;
+
+        *epDelta = 0;
+        
+        for (; deltaIndex < IX_ETH_DB_MAX_DELTA_ZONES ; deltaIndex ++)
+        {
+            if (ixEthDBEPDeltaOffset[type][deltaIndex] >= maxOffset)
+            {
+                *epDelta = ixEthDBEPDelta[type][deltaIndex];
+                break;
+            }
+        }
+
+        IX_ETH_DB_NPE_TRACE("DB: (NPEAdaptor) Computed epDelta %d (based on maxOffset %d)\n", *epDelta, maxOffset);
+    }
+
+    ixOsalCacheDmaFree(stack);
+}
+
+/**
+ * @brief implements a dummy node serialization function
+ *
+ * @param address address of where the node is to be serialized (unused)
+ * @param node tree node to be serialized (unused)
+ *
+ * This function is registered for safety reasons and should
+ * never be called. It will display an error message if this
+ * function is called.
+ *
+ * @return none
+ *
+ * @internal
+ */
+IX_ETH_DB_PRIVATE
+void ixEthDBNullSerialize(void *address, MacTreeNode *node)
+{
+    IX_ETH_DB_NPE_TRACE("DB: (NPEAdaptor) Warning, the NullSerialize function was called, wrong record type?\n");
+}
+
+/**
+ * @brief writes a filtering entry in NPE linear format
+ *
+ * @param address memory address to write node to
+ * @param node node to be written
+ *
+ * Used by @ref ixEthDBNPETreeWrite to liniarize a search tree
+ * in NPE-readable format.
+ *
+ * @internal
+ */
+IX_ETH_DB_PRIVATE
+void ixEthDBNPELearningNodeWrite(void *address, MacTreeNode *node)
+{
+    /* copy mac address */
+    memcpy(address, node->descriptor->macAddress, IX_IEEE803_MAC_ADDRESS_SIZE);
+
+    /* copy port ID */
+    NPE_NODE_BYTE(address, IX_EDB_NPE_NODE_ELT_PORT_ID_OFFSET) = IX_ETH_DB_PORT_ID_TO_NPE_LOGICAL_ID(node->descriptor->portID);
+
+    /* copy flags (valid and not active, as the NPE sets it to active) and clear reserved section (bits 2-7) */
+    NPE_NODE_BYTE(address, IX_EDB_NPE_NODE_ELT_FLAGS_OFFSET) = (UINT8) IX_EDB_FLAGS_INACTIVE_VALID;
+
+    IX_ETH_DB_NPE_VERBOSE_TRACE("DB: (NPEAdaptor) writing ELT node 0x%08x:0x%08x\n", * (UINT32 *) address, * (((UINT32 *) (address)) + 1));
+}
+
+/**
+ * @brief writes a WiFi header conversion record in
+ * NPE linear format
+ *
+ * @param address memory address to write node to
+ * @param node node to be written
+ *
+ * Used by @ref ixEthDBNPETreeWrite to liniarize a search tree
+ * in NPE-readable format.
+ *
+ * @internal
+ */
+IX_ETH_DB_PRIVATE
+void ixEthDBNPEWiFiNodeWrite(void *address, MacTreeNode *node)
+{
+    /* copy mac address */
+    memcpy(address, node->descriptor->macAddress, IX_IEEE803_MAC_ADDRESS_SIZE);
+
+    /* copy index */
+    NPE_NODE_BYTE(address, IX_EDB_NPE_NODE_WIFI_INDEX_OFFSET) = node->descriptor->recordData.wifiData.gwAddressIndex;
+
+    /* copy flags (type and valid) */
+    NPE_NODE_BYTE(address, IX_EDB_NPE_NODE_WIFI_FLAGS_OFFSET) = node->descriptor->recordData.wifiData.type << 1 | IX_EDB_FLAGS_VALID;
+}
+
+/**
+ * @brief writes a WiFi gateway header conversion record in
+ * NPE linear format
+ *
+ * @param address memory address to write node to
+ * @param node node to be written
+ *
+ * Used by @ref ixEthDBNPETreeWrite to liniarize a search tree
+ * in NPE-readable format.
+ *
+ * @internal
+ */
+IX_ETH_DB_PUBLIC
+void ixEthDBNPEGatewayNodeWrite(void *address, MacTreeNode *node)
+{
+    /* copy mac address */
+    memcpy(address, node->descriptor->recordData.wifiData.gwMacAddress, IX_IEEE803_MAC_ADDRESS_SIZE);
+
+    /* set reserved field, two bytes */
+    NPE_NODE_BYTE(address, IX_EDB_NPE_NODE_FW_RESERVED_OFFSET)     = 0;
+    NPE_NODE_BYTE(address, IX_EDB_NPE_NODE_FW_RESERVED_OFFSET + 1) = 0;
+}
+
+/**
+ * @brief writes a firewall record in
+ * NPE linear format
+ *
+ * @param address memory address to write node to
+ * @param node node to be written
+ *
+ * Used by @ref ixEthDBNPETreeWrite to liniarize a search tree
+ * in NPE-readable format.
+ *
+ * @internal
+ */
+IX_ETH_DB_PRIVATE
+void ixEthDBNPEFirewallNodeWrite(void *address, MacTreeNode *node)
+{
+    /* set reserved field */
+    NPE_NODE_BYTE(address, IX_EDB_NPE_NODE_FW_RESERVED_OFFSET) = 0;
+
+    /* set flags */
+    NPE_NODE_BYTE(address, IX_EDB_NPE_NODE_FW_FLAGS_OFFSET) = IX_EDB_FLAGS_VALID;
+
+    /* copy mac address */
+    memcpy((void *) ((UINT32) address + IX_EDB_NPE_NODE_FW_ADDR_OFFSET), node->descriptor->macAddress, IX_IEEE803_MAC_ADDRESS_SIZE);
+}
+
+/**
+ * @brief registers the NPE serialization methods
+ *
+ * This functions registers NPE serialization methods
+ * for writing the following types of records in NPE
+ * readable linear format:
+ * - filtering records
+ * - WiFi header conversion records
+ * - WiFi gateway header conversion records
+ * - firewall records
+ *
+ * Note that this function should be called by the
+ * component initialization function.
+ *
+ * @return number of registered record types
+ *
+ * @internal
+ */
+IX_ETH_DB_PUBLIC
+UINT32 ixEthDBRecordSerializeMethodsRegister()
+{
+    int i;
+    
+    /* safety - register a blank method for everybody first */
+    for ( i = 0 ; i < IX_ETH_DB_MAX_RECORD_TYPE_INDEX + 1 ; i++)
+    {
+        ixEthDBNPENodeWrite[i] = ixEthDBNullSerialize;
+    }
+    
+    /* register real methods */
+    ixEthDBNPENodeWrite[IX_ETH_DB_FILTERING_RECORD]      = ixEthDBNPELearningNodeWrite;
+    ixEthDBNPENodeWrite[IX_ETH_DB_FILTERING_VLAN_RECORD] = ixEthDBNPELearningNodeWrite;
+    ixEthDBNPENodeWrite[IX_ETH_DB_WIFI_RECORD]           = ixEthDBNPEWiFiNodeWrite;
+    ixEthDBNPENodeWrite[IX_ETH_DB_FIREWALL_RECORD]       = ixEthDBNPEFirewallNodeWrite;
+    ixEthDBNPENodeWrite[IX_ETH_DB_GATEWAY_RECORD]        = ixEthDBNPEGatewayNodeWrite;
+    
+    /* EP Delta arrays */
+    memset(ixEthDBEPDeltaOffset, 0, sizeof (ixEthDBEPDeltaOffset));
+    memset(ixEthDBEPDelta, 0, sizeof (ixEthDBEPDelta));
+    
+    /* filtering records */
+    ixEthDBEPDeltaOffset[IX_ETH_DB_FILTERING_RECORD][0] = 1;
+    ixEthDBEPDelta[IX_ETH_DB_FILTERING_RECORD][0]       = 0;
+    
+    ixEthDBEPDeltaOffset[IX_ETH_DB_FILTERING_RECORD][1] = 3;
+    ixEthDBEPDelta[IX_ETH_DB_FILTERING_RECORD][1]       = 7;
+    
+    ixEthDBEPDeltaOffset[IX_ETH_DB_FILTERING_RECORD][2] = 511;
+    ixEthDBEPDelta[IX_ETH_DB_FILTERING_RECORD][2]       = 14;
+    
+    /* wifi records */
+    ixEthDBEPDeltaOffset[IX_ETH_DB_WIFI_RECORD][0] = 1;
+    ixEthDBEPDelta[IX_ETH_DB_WIFI_RECORD][0]       = 0;
+    
+    ixEthDBEPDeltaOffset[IX_ETH_DB_WIFI_RECORD][1] = 3;
+    ixEthDBEPDelta[IX_ETH_DB_WIFI_RECORD][1]       = 7;
+    
+    ixEthDBEPDeltaOffset[IX_ETH_DB_WIFI_RECORD][2] = 511;
+    ixEthDBEPDelta[IX_ETH_DB_WIFI_RECORD][2]       = 14;
+
+    /* firewall records */
+    ixEthDBEPDeltaOffset[IX_ETH_DB_FIREWALL_RECORD][0] = 0;
+    ixEthDBEPDelta[IX_ETH_DB_FIREWALL_RECORD][0]       = 0;
+    
+    ixEthDBEPDeltaOffset[IX_ETH_DB_FIREWALL_RECORD][1] = 1;
+    ixEthDBEPDelta[IX_ETH_DB_FIREWALL_RECORD][1]       = 5;
+    
+    ixEthDBEPDeltaOffset[IX_ETH_DB_FIREWALL_RECORD][2] = 3;
+    ixEthDBEPDelta[IX_ETH_DB_FIREWALL_RECORD][2]       = 13;
+    
+    ixEthDBEPDeltaOffset[IX_ETH_DB_FIREWALL_RECORD][3] = 7;
+    ixEthDBEPDelta[IX_ETH_DB_FIREWALL_RECORD][3]       = 21;
+    
+    ixEthDBEPDeltaOffset[IX_ETH_DB_FIREWALL_RECORD][4] = 15;
+    ixEthDBEPDelta[IX_ETH_DB_FIREWALL_RECORD][4]       = 29;
+    
+    ixEthDBEPDeltaOffset[IX_ETH_DB_FIREWALL_RECORD][5] = 31;
+    ixEthDBEPDelta[IX_ETH_DB_FIREWALL_RECORD][5]       = 37;
+    
+    return 5; /* 5 methods registered */
+}
+
+#ifndef IX_NDEBUG
+
+IX_ETH_DB_PUBLIC UINT32 npeMsgHistory[IX_ETH_DB_NPE_MSG_HISTORY_DEPTH][2];
+IX_ETH_DB_PUBLIC UINT32 npeMsgHistoryLen = 0;
+
+/**
+ * When compiled in DEBUG mode, this function can be used to display
+ * the history of messages sent to the NPEs (up to 100).
+ */
+IX_ETH_DB_PUBLIC
+void ixEthDBShowNpeMsgHistory()
+{
+    UINT32 i = 0;
+    UINT32 base, len;
+
+    if (npeMsgHistoryLen <= IX_ETH_DB_NPE_MSG_HISTORY_DEPTH)
+    {
+        base = 0;
+        len  = npeMsgHistoryLen;
+    }
+    else
+    {
+        base = npeMsgHistoryLen % IX_ETH_DB_NPE_MSG_HISTORY_DEPTH;
+        len  = IX_ETH_DB_NPE_MSG_HISTORY_DEPTH;
+    }
+
+    printf("NPE message history [last %d messages, from least to most recent]:\n", len);
+
+    for (; i < len ; i++)
+    {
+        UINT32 pos = (base + i) % IX_ETH_DB_NPE_MSG_HISTORY_DEPTH;
+        printf("msg[%d]: 0x%08x:0x%08x\n", i, npeMsgHistory[pos][0], npeMsgHistory[pos][1]);
+    }
+}
+
+IX_ETH_DB_PUBLIC
+void ixEthDBELTShow(IxEthDBPortId portID)
+{
+    IxNpeMhMessage message;
+    IX_STATUS result;
+    
+    /* send EDB_GetMACAddressDatabase message */
+    FILL_GETMACADDRESSDATABASE(message, 
+        0 /* reserved */, 
+        IX_OSAL_MMU_VIRT_TO_PHYS(ixEthDBPortInfo[portID].updateMethod.npeUpdateZone));
+
+    IX_ETHDB_SEND_NPE_MSG(IX_ETH_DB_PORT_ID_TO_NPE(portID), message, result);
+
+    if (result == IX_SUCCESS)
+    {
+        /* analyze NPE copy */
+        UINT32 eltEntryOffset;
+        UINT32 entryPortID;
+
+        UINT32 eltBaseAddress = (UINT32) ixEthDBPortInfo[portID].updateMethod.npeUpdateZone;
+        UINT32 eltSize        = FULL_ELT_BYTE_SIZE;
+
+        /* invalidate cache */
+        IX_OSAL_CACHE_INVALIDATE((void *) eltBaseAddress, eltSize);
+
+        printf("Listing records in main learning tree for port %d\n", portID);
+
+        for (eltEntryOffset = ELT_ROOT_OFFSET ; eltEntryOffset < eltSize ; eltEntryOffset += ELT_ENTRY_SIZE)
+        {
+            /* (eltBaseAddress + eltEntryOffset) points to a valid NPE tree node
+            *
+            * the format of the node is MAC[6 bytes]:PortID[1 byte]:Reserved[6 bits]:Active[1 bit]:Valid[1 bit]
+            * therefore we can just use the pointer for database searches as only the first 6 bytes are checked
+            */
+            void *eltNodeAddress = (void *) ((UINT32) eltBaseAddress + eltEntryOffset);
+
+            if (IX_EDB_NPE_NODE_VALID(eltNodeAddress))
+            {
+                HashNode *node;
+
+                entryPortID = IX_ETH_DB_NPE_LOGICAL_ID_TO_PORT_ID(IX_EDB_NPE_NODE_PORT_ID(eltNodeAddress));
+
+                /* search record */
+                node = ixEthDBSearch((IxEthDBMacAddr *) eltNodeAddress, IX_ETH_DB_ALL_RECORD_TYPES);
+
+                printf("%s - port %d - %s ", mac2string((unsigned char *) eltNodeAddress), entryPortID, 
+                    IX_EDB_NPE_NODE_ACTIVE(eltNodeAddress) ? "active" : "inactive");
+
+                /* safety check, maybe user deleted record right before sync? */
+                if (node != NULL)
+                {
+                    /* found record */
+                    MacDescriptor *descriptor = (MacDescriptor *) node->data;
+
+                    printf("- %s ",
+                        descriptor->type == IX_ETH_DB_FILTERING_RECORD ? "filtering" :
+                        descriptor->type == IX_ETH_DB_FILTERING_VLAN_RECORD ? "vlan" :
+                        descriptor->type == IX_ETH_DB_WIFI_RECORD ? "wifi" : "other (check main DB)");
+
+                    if (descriptor->type == IX_ETH_DB_FILTERING_RECORD) printf("- age %d - %s ", 
+                        descriptor->recordData.filteringData.age,
+                        descriptor->recordData.filteringData.staticEntry ? "static" : "dynamic");
+
+                    if (descriptor->type == IX_ETH_DB_FILTERING_VLAN_RECORD) printf("- age %d - %s - tci %d ",
+                        descriptor->recordData.filteringVlanData.age,
+                        descriptor->recordData.filteringVlanData.staticEntry ? "static" : "dynamic",
+                        descriptor->recordData.filteringVlanData.ieee802_1qTag);
+
+                    /* end transaction */
+                    ixEthDBReleaseHashNode(node);
+                }
+                else
+                {
+                    printf("- not synced");
+                }
+
+                printf("\n");
+            }
+        }
+    }
+    else
+    {
+        ixOsalLog(IX_OSAL_LOG_LVL_FATAL, IX_OSAL_LOG_DEV_STDOUT, 
+            "EthDB: (ShowELT) Could not complete action (communication failure)\n",
+            portID, 0, 0, 0, 0, 0);
+    }
+}
+
+#endif