diff --git a/src/add-ons/kernel/drivers/network/rtl8169/hardware.h b/src/add-ons/kernel/drivers/network/rtl8169/hardware.h
index 625bf58e39..c36724c18c 100644
--- a/src/add-ons/kernel/drivers/network/rtl8169/hardware.h
+++ b/src/add-ons/kernel/drivers/network/rtl8169/hardware.h
@@ -1,3 +1,6 @@
+/* Realtek RTL8169 Family Driver
+ * Copyright (C) 2004 Marcus Overhagen <marcus@overhagen.de>. All rights reserved.
+ */
 #ifndef __HARDWARE_H
 #define __HARDWARE_H
 
@@ -5,29 +8,21 @@
 #define PCI_PCICMD_MSE	0x02
 #define PCI_PCICMD_BME	0x04
 
-
 typedef struct {
 	uint32 stat_len;
 	uint32 vlan;
-	uint32 buf_low;
+	uint32 buf_low;		// must be 8 byte aligned
 	uint32 buf_high;
-} _PACKED tx_desc;
+} _PACKED buf_desc;
 
 enum {
 	TX_DESC_OWN			= 0x80000000,
 	TX_DESC_EOR			= 0x40000000,
 	TX_DESC_FS			= 0x20000000,
 	TX_DESC_LS			= 0x10000000,
-	TX_DESC_LEN_MASK	= 0x00007fff,
+	TX_DESC_LEN_MASK	= 0x00003fff,
 };
 
-typedef struct {
-	uint32 stat_len;
-	uint32 vlan;
-	uint32 buf_low;		// must be 8 byte aligned
-	uint32 buf_high;
-} _PACKED rx_desc;
-
 enum {
 	RX_DESC_OWN			= 0x80000000,
 	RX_DESC_EOR			= 0x40000000,
@@ -42,7 +37,7 @@ enum {
 	RX_DESC_RES			= 0x00200000,
 	RX_DESC_RUNT		= 0x00100000,
 	RX_DESC_CRC			= 0x00080000,
-	RX_DESC_LEN_MASK	= 0x00007fff,
+	RX_DESC_LEN_MASK	= 0x00003fff,
 };
 
 enum {
@@ -53,13 +48,94 @@ enum {
 	REG_RDSAR_LOW		= 0xe4,
 	REG_RDSAR_HIGH		= 0xe8,
 
-	REG_CR				= 0x37,
+	REG_CR				= 0x37,	// 8 bit
+	REG_TPPOLL			= 0x38,	// 8 bit
+	
+	REG_INT_MASK		= 0x3c, // 16 bit
+	REG_INT_STAT		= 0x3e, // 16 bit
+	
+	REG_TX_CONFIG		= 0x40,
+	REG_RX_CONFIG		= 0x44,
+
+	REG_9346CR			= 0x50,	// 8 bit
+	REG_CONFIG0			= 0x51,	// 8 bit
+	REG_CONFIG1			= 0x52,	// 8 bit
+	REG_CONFIG2			= 0x53,	// 8 bit
+	REG_CONFIG3			= 0x54,	// 8 bit
+	REG_CONFIG4			= 0x55,	// 8 bit
+	REG_CONFIG5			= 0x56,	// 8 bit
+
+
+	REG_PHYAR			= 0x60,
+	REG_TBICSR			= 0x64,
+	REG_PHY_STAT		= 0x6c,	// 8bit
+	
 };
 
+// for REG_CR
 enum {
-	REG_CR_RST	= 0x10,
-	REG_CR_RE	= 0x08,
-	REG_CR_TE	= 0x04,
+	CR_RST	= 0x10,
+	CR_RE	= 0x08,
+	CR_TE	= 0x04,
+};
+
+// for REG_TPPOLL
+enum {
+	TPPOLL_HPQ 		= 0x80,
+	TPPOLL_NPQ		= 0x40,
+	TPPOLL_FSWINT	= 0x01,
+};
+
+// for REG_INT_MASK and REG_INT_STAT
+enum {
+	INT_SERR	= 0x8000,
+	INT_TimeOut	= 0x4000,
+	INT_SwInt	= 0x0100,
+	INT_TDU		= 0x0080,
+	INT_FOVW	= 0x0040,
+	INT_PUN		= 0x0020,
+	INT_RDU		= 0x0010,
+	INT_TER		= 0x0008,
+	INT_TOK		= 0x0004,
+	INT_RER		= 0x0002,
+	INT_ROK		= 0x0001,
+};
+
+// for REG_PHY_STAT
+enum {
+	PHY_STAT_EnTBI		= 0x80,
+	PHY_STAT_TxFlow		= 0x40,
+	PHY_STAT_RxFlow		= 0x20,
+	PHY_STAT_1000MF		= 0x10,
+	PHY_STAT_100M		= 0x08,
+	PHY_STAT_10M		= 0x04,
+	PHY_STAT_LinkSts	= 0x02,
+	PHY_STAT_FullDup	= 0x01,
+};
+
+// for REG_TBICSR
+enum {
+	TBICSR_ResetTBI		= 0x80000000,
+	TBICSR_TBILoopBack	= 0x40000000,
+	TBICSR_TBINWEn		= 0x20000000,
+	TBICSR_TBIReNW		= 0x10000000,
+	TBICSR_TBILinkOk	= 0x02000000,
+	TBICSR_NWComplete	= 0x01000000,
+};
+
+// for REG_RX_CONFIG
+enum {
+	RX_CONFIG_MulERINT		= 0x01000000,
+	RX_CONFIG_RER8			= 0x00010000,
+	RX_CONFIG_AcceptErr		= 0x00000020,
+	RX_CONFIG_AcceptRunt	= 0x00000010,
+	RX_CONFIG_AcceptBroad 	= 0x00000008,
+	RX_CONFIG_AcceptMulti 	= 0x00000004,
+	RX_CONFIG_AcceptMyPhys	= 0x00000002,
+	RX_CONFIG_AcceptAllPhys	= 0x00000001,
+	RX_CONFIG_MASK			= 0xfe7e1880, // XXX should be 0xfefe1880 but Realtek driver clears the undocumented bit 23
+	RC_CONFIG_RXFTH_Shift	= 13,
+	RC_CONFIG_MAXDMA_Shift	= 8,
 };
 
 #endif