sk98lin: resurrect driver

This reverts commit e1abecc48938fbe1966ea6e78267fc673fa59295.

The driver works on some hardware that skge doesn't handle yet.

Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

1 files changed, 3257 insertions, 0 deletions

diff --git a/drivers/net/sk98lin/skrlmt.c b/drivers/net/sk98lin/skrlmt.c
new file mode 100644
index 0000000..be8d1cc
--- /dev/null
+++ b/drivers/net/sk98lin/skrlmt.c
@@ -0,0 +1,3257 @@
+/******************************************************************************
+ *
+ * Name:	skrlmt.c
+ * Project:	GEnesis, PCI Gigabit Ethernet Adapter
+ * Version:	$Revision: 1.69 $
+ * Date:	$Date: 2003/04/15 09:39:22 $
+ * Purpose:	Manage links on SK-NET Adapters, esp. redundant ones.
+ *
+ ******************************************************************************/
+
+/******************************************************************************
+ *
+ *	(C)Copyright 1998-2002 SysKonnect GmbH.
+ *	(C)Copyright 2002-2003 Marvell.
+ *
+ *	This program is free software; you can redistribute it and/or modify
+ *	it under the terms of the GNU General Public License as published by
+ *	the Free Software Foundation; either version 2 of the License, or
+ *	(at your option) any later version.
+ *
+ *	The information in this file is provided "AS IS" without warranty.
+ *
+ ******************************************************************************/
+
+/******************************************************************************
+ *
+ * Description:
+ *
+ * This module contains code for Link ManagemenT (LMT) of SK-NET Adapters.
+ * It is mainly intended for adapters with more than one link.
+ * For such adapters, this module realizes Redundant Link ManagemenT (RLMT).
+ *
+ * Include File Hierarchy:
+ *
+ *	"skdrv1st.h"
+ *	"skdrv2nd.h"
+ *
+ ******************************************************************************/
+
+#ifndef	lint
+static const char SysKonnectFileId[] =
+	"@(#) $Id: skrlmt.c,v 1.69 2003/04/15 09:39:22 tschilli Exp $ (C) Marvell.";
+#endif	/* !defined(lint) */
+
+#define __SKRLMT_C
+
+#ifdef __cplusplus
+extern "C" {
+#endif	/* cplusplus */
+
+#include "h/skdrv1st.h"
+#include "h/skdrv2nd.h"
+
+/* defines ********************************************************************/
+
+#ifndef SK_HWAC_LINK_LED
+#define SK_HWAC_LINK_LED(a,b,c,d)
+#endif	/* !defined(SK_HWAC_LINK_LED) */
+
+#ifndef DEBUG
+#define RLMT_STATIC	static
+#else	/* DEBUG */
+#define RLMT_STATIC
+
+#ifndef SK_LITTLE_ENDIAN
+/* First 32 bits */
+#define OFFS_LO32	1
+
+/* Second 32 bits */
+#define OFFS_HI32	0
+#else	/* SK_LITTLE_ENDIAN */
+/* First 32 bits */
+#define OFFS_LO32	0
+
+/* Second 32 bits */
+#define OFFS_HI32	1
+#endif	/* SK_LITTLE_ENDIAN */
+
+#endif	/* DEBUG */
+
+/* ----- Private timeout values ----- */
+
+#define SK_RLMT_MIN_TO_VAL			   125000	/* 1/8 sec. */
+#define SK_RLMT_DEF_TO_VAL			  1000000	/* 1 sec. */
+#define SK_RLMT_PORTDOWN_TIM_VAL	   900000	/* another 0.9 sec. */
+#define SK_RLMT_PORTSTART_TIM_VAL	   100000	/* 0.1 sec. */
+#define SK_RLMT_PORTUP_TIM_VAL		  2500000	/* 2.5 sec. */
+#define SK_RLMT_SEG_TO_VAL			900000000	/* 15 min. */
+
+/* Assume tick counter increment is 1 - may be set OS-dependent. */
+#ifndef SK_TICK_INCR
+#define SK_TICK_INCR	SK_CONSTU64(1)
+#endif	/* !defined(SK_TICK_INCR) */
+
+/*
+ * Amount that a time stamp must be later to be recognized as "substantially
+ * later". This is about 1/128 sec, but above 1 tick counter increment.
+ */
+#define SK_RLMT_BC_DELTA		(1 + ((SK_TICKS_PER_SEC >> 7) > SK_TICK_INCR ? \
+									(SK_TICKS_PER_SEC >> 7) : SK_TICK_INCR))
+
+/* ----- Private RLMT defaults ----- */
+
+#define SK_RLMT_DEF_PREF_PORT	0					/* "Lower" port. */
+#define SK_RLMT_DEF_MODE 		SK_RLMT_CHECK_LINK	/* Default RLMT Mode. */
+
+/* ----- Private RLMT checking states ----- */
+
+#define SK_RLMT_RCS_SEG			1		/* RLMT Check State: check seg. */
+#define SK_RLMT_RCS_START_SEG	2		/* RLMT Check State: start check seg. */
+#define SK_RLMT_RCS_SEND_SEG	4		/* RLMT Check State: send BPDU packet */
+#define SK_RLMT_RCS_REPORT_SEG	8		/* RLMT Check State: report seg. */
+
+/* ----- Private PORT checking states ----- */
+
+#define SK_RLMT_PCS_TX			1		/* Port Check State: check tx. */
+#define SK_RLMT_PCS_RX			2		/* Port Check State: check rx. */
+
+/* ----- Private PORT events ----- */
+
+/* Note: Update simulation when changing these. */
+#define SK_RLMT_PORTSTART_TIM	1100	/* Port start timeout. */
+#define SK_RLMT_PORTUP_TIM		1101	/* Port can now go up. */
+#define SK_RLMT_PORTDOWN_RX_TIM	1102	/* Port did not receive once ... */
+#define SK_RLMT_PORTDOWN		1103	/* Port went down. */
+#define SK_RLMT_PORTDOWN_TX_TIM	1104	/* Partner did not receive ... */
+
+/* ----- Private RLMT events ----- */
+
+/* Note: Update simulation when changing these. */
+#define SK_RLMT_TIM				2100	/* RLMT timeout. */
+#define SK_RLMT_SEG_TIM			2101	/* RLMT segmentation check timeout. */
+
+#define TO_SHORTEN(tim)	((tim) / 2)
+
+/* Error numbers and messages. */
+#define SKERR_RLMT_E001		(SK_ERRBASE_RLMT + 0)
+#define SKERR_RLMT_E001_MSG	"No Packet."
+#define SKERR_RLMT_E002		(SKERR_RLMT_E001 + 1)
+#define SKERR_RLMT_E002_MSG	"Short Packet."
+#define SKERR_RLMT_E003		(SKERR_RLMT_E002 + 1)
+#define SKERR_RLMT_E003_MSG	"Unknown RLMT event."
+#define SKERR_RLMT_E004		(SKERR_RLMT_E003 + 1)
+#define SKERR_RLMT_E004_MSG	"PortsUp incorrect."
+#define SKERR_RLMT_E005		(SKERR_RLMT_E004 + 1)
+#define SKERR_RLMT_E005_MSG	\
+ "Net seems to be segmented (different root bridges are reported on the ports)."
+#define SKERR_RLMT_E006		(SKERR_RLMT_E005 + 1)
+#define SKERR_RLMT_E006_MSG	"Duplicate MAC Address detected."
+#define SKERR_RLMT_E007		(SKERR_RLMT_E006 + 1)
+#define SKERR_RLMT_E007_MSG	"LinksUp incorrect."
+#define SKERR_RLMT_E008		(SKERR_RLMT_E007 + 1)
+#define SKERR_RLMT_E008_MSG	"Port not started but link came up."
+#define SKERR_RLMT_E009		(SKERR_RLMT_E008 + 1)
+#define SKERR_RLMT_E009_MSG	"Corrected illegal setting of Preferred Port."
+#define SKERR_RLMT_E010		(SKERR_RLMT_E009 + 1)
+#define SKERR_RLMT_E010_MSG	"Ignored illegal Preferred Port."
+
+/* LLC field values. */
+#define LLC_COMMAND_RESPONSE_BIT		1
+#define LLC_TEST_COMMAND				0xE3
+#define LLC_UI							0x03
+
+/* RLMT Packet fields. */
+#define	SK_RLMT_DSAP					0
+#define	SK_RLMT_SSAP					0
+#define SK_RLMT_CTRL					(LLC_TEST_COMMAND)
+#define SK_RLMT_INDICATOR0				0x53	/* S */
+#define SK_RLMT_INDICATOR1				0x4B	/* K */
+#define SK_RLMT_INDICATOR2				0x2D	/* - */
+#define SK_RLMT_INDICATOR3				0x52	/* R */
+#define SK_RLMT_INDICATOR4				0x4C	/* L */
+#define SK_RLMT_INDICATOR5				0x4D	/* M */
+#define SK_RLMT_INDICATOR6				0x54	/* T */
+#define SK_RLMT_PACKET_VERSION			0
+
+/* RLMT SPT Flag values. */
+#define	SK_RLMT_SPT_FLAG_CHANGE			0x01
+#define	SK_RLMT_SPT_FLAG_CHANGE_ACK		0x80
+
+/* RLMT SPT Packet fields. */
+#define	SK_RLMT_SPT_DSAP				0x42
+#define	SK_RLMT_SPT_SSAP				0x42
+#define SK_RLMT_SPT_CTRL				(LLC_UI)
+#define	SK_RLMT_SPT_PROTOCOL_ID0		0x00
+#define	SK_RLMT_SPT_PROTOCOL_ID1		0x00
+#define	SK_RLMT_SPT_PROTOCOL_VERSION_ID	0x00
+#define	SK_RLMT_SPT_BPDU_TYPE			0x00
+#define	SK_RLMT_SPT_FLAGS				0x00	/* ?? */
+#define	SK_RLMT_SPT_ROOT_ID0			0xFF	/* Lowest possible priority. */
+#define	SK_RLMT_SPT_ROOT_ID1			0xFF	/* Lowest possible priority. */
+
+/* Remaining 6 bytes will be the current port address. */
+#define	SK_RLMT_SPT_ROOT_PATH_COST0		0x00
+#define	SK_RLMT_SPT_ROOT_PATH_COST1		0x00
+#define	SK_RLMT_SPT_ROOT_PATH_COST2		0x00
+#define	SK_RLMT_SPT_ROOT_PATH_COST3		0x00
+#define	SK_RLMT_SPT_BRIDGE_ID0			0xFF	/* Lowest possible priority. */
+#define	SK_RLMT_SPT_BRIDGE_ID1			0xFF	/* Lowest possible priority. */
+
+/* Remaining 6 bytes will be the current port address. */
+#define	SK_RLMT_SPT_PORT_ID0			0xFF	/* Lowest possible priority. */
+#define	SK_RLMT_SPT_PORT_ID1			0xFF	/* Lowest possible priority. */
+#define	SK_RLMT_SPT_MSG_AGE0			0x00
+#define	SK_RLMT_SPT_MSG_AGE1			0x00
+#define	SK_RLMT_SPT_MAX_AGE0			0x00
+#define	SK_RLMT_SPT_MAX_AGE1			0xFF
+#define	SK_RLMT_SPT_HELLO_TIME0			0x00
+#define	SK_RLMT_SPT_HELLO_TIME1			0xFF
+#define	SK_RLMT_SPT_FWD_DELAY0			0x00
+#define	SK_RLMT_SPT_FWD_DELAY1			0x40
+
+/* Size defines. */
+#define SK_RLMT_MIN_PACKET_SIZE			34
+#define SK_RLMT_MAX_PACKET_SIZE			(SK_RLMT_MAX_TX_BUF_SIZE)
+#define SK_PACKET_DATA_LEN				(SK_RLMT_MAX_PACKET_SIZE - \
+										SK_RLMT_MIN_PACKET_SIZE)
+
+/* ----- RLMT packet types ----- */
+#define SK_PACKET_ANNOUNCE				1	/* Port announcement. */
+#define SK_PACKET_ALIVE					2	/* Alive packet to port. */
+#define SK_PACKET_ADDR_CHANGED			3	/* Port address changed. */
+#define SK_PACKET_CHECK_TX				4	/* Check your tx line. */
+
+#ifdef SK_LITTLE_ENDIAN
+#define SK_U16_TO_NETWORK_ORDER(Val,Addr) { \
+	SK_U8	*_Addr = (SK_U8*)(Addr); \
+	SK_U16	_Val = (SK_U16)(Val); \
+	*_Addr++ = (SK_U8)(_Val >> 8); \
+	*_Addr = (SK_U8)(_Val & 0xFF); \
+}
+#endif	/* SK_LITTLE_ENDIAN */
+
+#ifdef SK_BIG_ENDIAN
+#define SK_U16_TO_NETWORK_ORDER(Val,Addr) (*(SK_U16*)(Addr) = (SK_U16)(Val))
+#endif	/* SK_BIG_ENDIAN */
+
+#define AUTONEG_FAILED	SK_FALSE
+#define AUTONEG_SUCCESS	SK_TRUE
+
+
+/* typedefs *******************************************************************/
+
+/* RLMT packet.  Length: SK_RLMT_MAX_PACKET_SIZE (60) bytes. */
+typedef struct s_RlmtPacket {
+	SK_U8	DstAddr[SK_MAC_ADDR_LEN];
+	SK_U8	SrcAddr[SK_MAC_ADDR_LEN];
+	SK_U8	TypeLen[2];
+	SK_U8	DSap;
+	SK_U8	SSap;
+	SK_U8	Ctrl;
+	SK_U8	Indicator[7];
+	SK_U8	RlmtPacketType[2];
+	SK_U8	Align1[2];
+	SK_U8	Random[4];				/* Random value of requesting(!) station. */
+	SK_U8	RlmtPacketVersion[2];	/* RLMT Packet version. */
+	SK_U8	Data[SK_PACKET_DATA_LEN];
+} SK_RLMT_PACKET;
+
+typedef struct s_SpTreeRlmtPacket {
+	SK_U8	DstAddr[SK_MAC_ADDR_LEN];
+	SK_U8	SrcAddr[SK_MAC_ADDR_LEN];
+	SK_U8	TypeLen[2];
+	SK_U8	DSap;
+	SK_U8	SSap;
+	SK_U8	Ctrl;
+	SK_U8	ProtocolId[2];
+	SK_U8	ProtocolVersionId;
+	SK_U8	BpduType;
+	SK_U8	Flags;
+	SK_U8	RootId[8];
+	SK_U8	RootPathCost[4];
+	SK_U8	BridgeId[8];
+	SK_U8	PortId[2];
+	SK_U8	MessageAge[2];
+	SK_U8	MaxAge[2];
+	SK_U8	HelloTime[2];
+	SK_U8	ForwardDelay[2];
+} SK_SPTREE_PACKET;
+
+/* global variables ***********************************************************/
+
+SK_MAC_ADDR	SkRlmtMcAddr =	{{0x01,  0x00,  0x5A,  0x52,  0x4C,  0x4D}};
+SK_MAC_ADDR	BridgeMcAddr =	{{0x01,  0x80,  0xC2,  0x00,  0x00,  0x00}};
+
+/* local variables ************************************************************/
+
+/* None. */
+
+/* functions ******************************************************************/
+
+RLMT_STATIC void	SkRlmtCheckSwitch(
+	SK_AC	*pAC,
+	SK_IOC	IoC,
+	SK_U32	NetIdx);
+RLMT_STATIC void	SkRlmtCheckSeg(
+	SK_AC	*pAC,
+	SK_IOC	IoC,
+	SK_U32	NetIdx);
+RLMT_STATIC void	SkRlmtEvtSetNets(
+	SK_AC		*pAC,
+	SK_IOC		IoC,
+	SK_EVPARA	Para);
+
+/******************************************************************************
+ *
+ *	SkRlmtInit - initialize data, set state to init
+ *
+ * Description:
+ *
+ *	SK_INIT_DATA
+ *	============
+ *
+ *	This routine initializes all RLMT-related variables to a known state.
+ *	The initial state is SK_RLMT_RS_INIT.
+ *	All ports are initialized to SK_RLMT_PS_INIT.
+ *
+ *
+ *	SK_INIT_IO
+ *	==========
+ *
+ *	Nothing.
+ *
+ *
+ *	SK_INIT_RUN
+ *	===========
+ *
+ *	Determine the adapter's random value.
+ *	Set the hw registers, the "logical MAC address", the
+ *	RLMT multicast address, and eventually the BPDU multicast address.
+ *
+ * Context:
+ *	init, pageable
+ *
+ * Returns:
+ *	Nothing.
+ */
+void	SkRlmtInit(
+SK_AC	*pAC,	/* Adapter Context */
+SK_IOC	IoC,	/* I/O Context */
+int		Level)	/* Initialization Level */
+{
+	SK_U32		i, j;
+	SK_U64		Random;
+	SK_EVPARA	Para;
+    SK_MAC_ADDR		VirtualMacAddress;
+    SK_MAC_ADDR		PhysicalAMacAddress;
+    SK_BOOL		VirtualMacAddressSet;
+    SK_BOOL		PhysicalAMacAddressSet;
+
+	SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_INIT,
+		("RLMT Init level %d.\n", Level))
+
+	switch (Level) {
+	case SK_INIT_DATA:	/* Initialize data structures. */
+		SK_MEMSET((char *)&pAC->Rlmt, 0, sizeof(SK_RLMT));
+
+		for (i = 0; i < SK_MAX_MACS; i++) {
+			pAC->Rlmt.Port[i].PortState = SK_RLMT_PS_INIT;
+			pAC->Rlmt.Port[i].LinkDown = SK_TRUE;
+			pAC->Rlmt.Port[i].PortDown = SK_TRUE;
+			pAC->Rlmt.Port[i].PortStarted = SK_FALSE;
+			pAC->Rlmt.Port[i].PortNoRx = SK_FALSE;
+			pAC->Rlmt.Port[i].RootIdSet = SK_FALSE;
+			pAC->Rlmt.Port[i].PortNumber = i;
+			pAC->Rlmt.Port[i].Net = &pAC->Rlmt.Net[0];
+			pAC->Rlmt.Port[i].AddrPort = &pAC->Addr.Port[i];
+		}
+
+		pAC->Rlmt.NumNets = 1;
+		for (i = 0; i < SK_MAX_NETS; i++) {
+			pAC->Rlmt.Net[i].RlmtState = SK_RLMT_RS_INIT;
+			pAC->Rlmt.Net[i].RootIdSet = SK_FALSE;
+			pAC->Rlmt.Net[i].PrefPort = SK_RLMT_DEF_PREF_PORT;
+			pAC->Rlmt.Net[i].Preference = 0xFFFFFFFF;	  /* Automatic. */
+			/* Just assuming. */
+			pAC->Rlmt.Net[i].ActivePort = pAC->Rlmt.Net[i].PrefPort;
+			pAC->Rlmt.Net[i].RlmtMode = SK_RLMT_DEF_MODE;
+			pAC->Rlmt.Net[i].TimeoutValue = SK_RLMT_DEF_TO_VAL;
+			pAC->Rlmt.Net[i].NetNumber = i;
+		}
+
+		pAC->Rlmt.Net[0].Port[0] = &pAC->Rlmt.Port[0];
+		pAC->Rlmt.Net[0].Port[1] = &pAC->Rlmt.Port[1];
+#if SK_MAX_NETS > 1
+		pAC->Rlmt.Net[1].Port[0] = &pAC->Rlmt.Port[1];
+#endif	/* SK_MAX_NETS > 1 */
+		break;
+
+	case SK_INIT_IO:	/* GIMacsFound first available here. */
+		SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_INIT,
+			("RLMT: %d MACs were detected.\n", pAC->GIni.GIMacsFound))
+
+		pAC->Rlmt.Net[0].NumPorts = pAC->GIni.GIMacsFound;
+
+		/* Initialize HW registers? */
+		if (pAC->GIni.GIMacsFound == 1) {
+			Para.Para32[0] = SK_RLMT_MODE_CLS;
+			Para.Para32[1] = 0;
+			(void)SkRlmtEvent(pAC, IoC, SK_RLMT_MODE_CHANGE, Para);
+		}
+		break;
+
+	case SK_INIT_RUN:
+		/* Ensure RLMT is set to one net. */
+		if (pAC->Rlmt.NumNets > 1) {
+			Para.Para32[0] = 1;
+			Para.Para32[1] = -1;
+			SkRlmtEvtSetNets(pAC, IoC, Para);
+		}
+
+		for (i = 0; i < (SK_U32)pAC->GIni.GIMacsFound; i++) {
+			Random = SkOsGetTime(pAC);
+			*(SK_U32*)&pAC->Rlmt.Port[i].Random = *(SK_U32*)&Random;
+
+			for (j = 0; j < 4; j++) {
+				pAC->Rlmt.Port[i].Random[j] ^= pAC->Rlmt.Port[i].AddrPort->
+					CurrentMacAddress.a[SK_MAC_ADDR_LEN - 1 - j];
+			}
+
+			(void)SkAddrMcClear(pAC, IoC, i, SK_ADDR_PERMANENT | SK_MC_SW_ONLY);
+			
+			/* Add RLMT MC address. */
+			(void)SkAddrMcAdd(pAC, IoC, i, &SkRlmtMcAddr, SK_ADDR_PERMANENT);
+
+			if (pAC->Rlmt.Net[0].RlmtMode & SK_RLMT_CHECK_SEG) {
+				/* Add BPDU MC address. */
+				(void)SkAddrMcAdd(pAC, IoC, i, &BridgeMcAddr, SK_ADDR_PERMANENT);
+			}
+
+			(void)SkAddrMcUpdate(pAC, IoC, i);
+		}
+
+    	VirtualMacAddressSet = SK_FALSE;
+		/* Read virtual MAC address from Control Register File. */
+		for (j = 0; j < SK_MAC_ADDR_LEN; j++) {
+			
+            SK_IN8(IoC, B2_MAC_1 + j, &VirtualMacAddress.a[j]);
+            VirtualMacAddressSet |= VirtualMacAddress.a[j];
+		}
+    	
+        PhysicalAMacAddressSet = SK_FALSE;
+		/* Read physical MAC address for MAC A from Control Register File. */
+		for (j = 0; j < SK_MAC_ADDR_LEN; j++) {
+			
+            SK_IN8(IoC, B2_MAC_2 + j, &PhysicalAMacAddress.a[j]);
+            PhysicalAMacAddressSet |= PhysicalAMacAddress.a[j];
+		}
+
+        /* check if the two mac addresses contain reasonable values */
+        if (!VirtualMacAddressSet || !PhysicalAMacAddressSet) {
+
+            pAC->Rlmt.RlmtOff = SK_TRUE;
+        }
+
+        /* if the two mac addresses are equal switch off the RLMT_PRE_LOOKAHEAD
+           and the RLMT_LOOKAHEAD macros */
+        else if (SK_ADDR_EQUAL(PhysicalAMacAddress.a, VirtualMacAddress.a)) {
+
+            pAC->Rlmt.RlmtOff = SK_TRUE;
+        }
+		else {
+			pAC->Rlmt.RlmtOff = SK_FALSE;
+		}
+		break;
+
+	default:	/* error */
+		break;
+	}
+	return;
+}	/* SkRlmtInit */
+
+
+/******************************************************************************
+ *
+ *	SkRlmtBuildCheckChain - build the check chain
+ *
+ * Description:
+ *	This routine builds the local check chain:
+ *	- Each port that is up checks the next port.
+ *	- The last port that is up checks the first port that is up.
+ *
+ * Notes:
+ *	- Currently only local ports are considered when building the chain.
+ *	- Currently the SuspectState is just reset;
+ *	  it would be better to save it ...
+ *
+ * Context:
+ *	runtime, pageable?
+ *
+ * Returns:
+ *	Nothing
+ */
+RLMT_STATIC void	SkRlmtBuildCheckChain(
+SK_AC	*pAC,	/* Adapter Context */
+SK_U32	NetIdx)	/* Net Number */
+{
+	SK_U32			i;
+	SK_U32			NumMacsUp;
+	SK_RLMT_PORT *	FirstMacUp;
+	SK_RLMT_PORT *	PrevMacUp;
+
+	FirstMacUp	= NULL;
+	PrevMacUp	= NULL;
+	
+	if (!(pAC->Rlmt.Net[NetIdx].RlmtMode & SK_RLMT_CHECK_LOC_LINK)) {
+		for (i = 0; i < pAC->Rlmt.Net[i].NumPorts; i++) {
+			pAC->Rlmt.Net[NetIdx].Port[i]->PortsChecked = 0;
+		}
+		return;	/* Done. */
+	}
+			
+	SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+		("SkRlmtBuildCheckChain.\n"))
+
+	NumMacsUp = 0;
+
+	for (i = 0; i < pAC->Rlmt.Net[NetIdx].NumPorts; i++) {
+		pAC->Rlmt.Net[NetIdx].Port[i]->PortsChecked = 0;
+		pAC->Rlmt.Net[NetIdx].Port[i]->PortsSuspect = 0;
+		pAC->Rlmt.Net[NetIdx].Port[i]->CheckingState &=
+			~(SK_RLMT_PCS_RX | SK_RLMT_PCS_TX);
+
+		/*
+		 * If more than two links are detected we should consider
+		 * checking at least two other ports:
+		 * 1. the next port that is not LinkDown and
+		 * 2. the next port that is not PortDown.
+		 */
+		if (!pAC->Rlmt.Net[NetIdx].Port[i]->LinkDown) {
+			if (NumMacsUp == 0) {
+				FirstMacUp = pAC->Rlmt.Net[NetIdx].Port[i];
+			}
+			else {
+				PrevMacUp->PortCheck[
+					pAC->Rlmt.Net[NetIdx].Port[i]->PortsChecked].CheckAddr =
+					pAC->Rlmt.Net[NetIdx].Port[i]->AddrPort->CurrentMacAddress;
+				PrevMacUp->PortCheck[
+					PrevMacUp->PortsChecked].SuspectTx = SK_FALSE;
+				PrevMacUp->PortsChecked++;
+			}
+			PrevMacUp = pAC->Rlmt.Net[NetIdx].Port[i];
+			NumMacsUp++;
+		}
+	}
+
+	if (NumMacsUp > 1) {
+		PrevMacUp->PortCheck[PrevMacUp->PortsChecked].CheckAddr =
+			FirstMacUp->AddrPort->CurrentMacAddress;
+		PrevMacUp->PortCheck[PrevMacUp->PortsChecked].SuspectTx =
+			SK_FALSE;
+		PrevMacUp->PortsChecked++;
+	}
+
+#ifdef DEBUG
+	for (i = 0; i < pAC->Rlmt.Net[NetIdx].NumPorts; i++) {
+		SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+			("Port %d checks %d other ports: %2X.\n", i,
+				pAC->Rlmt.Net[NetIdx].Port[i]->PortsChecked,
+				pAC->Rlmt.Net[NetIdx].Port[i]->PortCheck[0].CheckAddr.a[5]))
+	}
+#endif	/* DEBUG */
+
+	return;
+}	/* SkRlmtBuildCheckChain */
+
+
+/******************************************************************************
+ *
+ *	SkRlmtBuildPacket - build an RLMT packet
+ *
+ * Description:
+ *	This routine sets up an RLMT packet.
+ *
+ * Context:
+ *	runtime, pageable?
+ *
+ * Returns:
+ *	NULL or pointer to RLMT mbuf
+ */
+RLMT_STATIC SK_MBUF	*SkRlmtBuildPacket(
+SK_AC		*pAC,		/* Adapter Context */
+SK_IOC		IoC,		/* I/O Context */
+SK_U32		PortNumber,	/* Sending port */
+SK_U16		PacketType,	/* RLMT packet type */
+SK_MAC_ADDR	*SrcAddr,	/* Source address */
+SK_MAC_ADDR	*DestAddr)	/* Destination address */
+{
+	int		i;
+	SK_U16		Length;
+	SK_MBUF		*pMb;
+	SK_RLMT_PACKET	*pPacket;
+
+#ifdef DEBUG
+	SK_U8	CheckSrc  = 0;
+	SK_U8	CheckDest = 0;
+	
+	for (i = 0; i < SK_MAC_ADDR_LEN; ++i) {
+		CheckSrc  |= SrcAddr->a[i];
+		CheckDest |= DestAddr->a[i];
+	}
+
+	if ((CheckSrc == 0) || (CheckDest == 0)) {
+		SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_ERR,
+			("SkRlmtBuildPacket: Invalid %s%saddr.\n",
+			 (CheckSrc == 0 ? "Src" : ""), (CheckDest == 0 ? "Dest" : "")))
+	}
+#endif
+
+	if ((pMb = SkDrvAllocRlmtMbuf(pAC, IoC, SK_RLMT_MAX_PACKET_SIZE)) != NULL) {
+		pPacket = (SK_RLMT_PACKET*)pMb->pData;
+		for (i = 0; i < SK_MAC_ADDR_LEN; i++) {
+			pPacket->DstAddr[i] = DestAddr->a[i];
+			pPacket->SrcAddr[i] = SrcAddr->a[i];
+		}
+		pPacket->DSap = SK_RLMT_DSAP;
+		pPacket->SSap = SK_RLMT_SSAP;
+		pPacket->Ctrl = SK_RLMT_CTRL;
+		pPacket->Indicator[0] = SK_RLMT_INDICATOR0;
+		pPacket->Indicator[1] = SK_RLMT_INDICATOR1;
+		pPacket->Indicator[2] = SK_RLMT_INDICATOR2;
+		pPacket->Indicator[3] = SK_RLMT_INDICATOR3;
+		pPacket->Indicator[4] = SK_RLMT_INDICATOR4;
+		pPacket->Indicator[5] = SK_RLMT_INDICATOR5;
+		pPacket->Indicator[6] = SK_RLMT_INDICATOR6;
+
+		SK_U16_TO_NETWORK_ORDER(PacketType, &pPacket->RlmtPacketType[0]);
+
+		for (i = 0; i < 4; i++) {
+			pPacket->Random[i] = pAC->Rlmt.Port[PortNumber].Random[i];
+		}
+		
+		SK_U16_TO_NETWORK_ORDER(
+			SK_RLMT_PACKET_VERSION, &pPacket->RlmtPacketVersion[0]);
+
+		for (i = 0; i < SK_PACKET_DATA_LEN; i++) {
+			pPacket->Data[i] = 0x00;
+		}
+
+		Length = SK_RLMT_MAX_PACKET_SIZE;	/* Or smaller. */
+		pMb->Length = Length;
+		pMb->PortIdx = PortNumber;
+		Length -= 14;
+		SK_U16_TO_NETWORK_ORDER(Length, &pPacket->TypeLen[0]);
+
+		if (PacketType == SK_PACKET_ALIVE) {
+			pAC->Rlmt.Port[PortNumber].TxHelloCts++;
+		}
+	}
+
+	return (pMb);
+}	/* SkRlmtBuildPacket */
+
+
+/******************************************************************************
+ *
+ *	SkRlmtBuildSpanningTreePacket - build spanning tree check packet
+ *
+ * Description:
+ *	This routine sets up a BPDU packet for spanning tree check.
+ *
+ * Context:
+ *	runtime, pageable?
+ *
+ * Returns:
+ *	NULL or pointer to RLMT mbuf
+ */
+RLMT_STATIC SK_MBUF	*SkRlmtBuildSpanningTreePacket(
+SK_AC	*pAC,		/* Adapter Context */
+SK_IOC	IoC,		/* I/O Context */
+SK_U32	PortNumber)	/* Sending port */
+{
+	unsigned			i;
+	SK_U16				Length;
+	SK_MBUF				*pMb;
+	SK_SPTREE_PACKET	*pSPacket;
+
+	if ((pMb = SkDrvAllocRlmtMbuf(pAC, IoC, SK_RLMT_MAX_PACKET_SIZE)) !=
+		NULL) {
+		pSPacket = (SK_SPTREE_PACKET*)pMb->pData;
+		for (i = 0; i < SK_MAC_ADDR_LEN; i++) {
+			pSPacket->DstAddr[i] = BridgeMcAddr.a[i];
+			pSPacket->SrcAddr[i] =
+				pAC->Addr.Port[PortNumber].CurrentMacAddress.a[i];
+		}
+		pSPacket->DSap = SK_RLMT_SPT_DSAP;
+		pSPacket->SSap = SK_RLMT_SPT_SSAP;
+		pSPacket->Ctrl = SK_RLMT_SPT_CTRL;
+
+		pSPacket->ProtocolId[0] = SK_RLMT_SPT_PROTOCOL_ID0;
+		pSPacket->ProtocolId[1] = SK_RLMT_SPT_PROTOCOL_ID1;
+		pSPacket->ProtocolVersionId = SK_RLMT_SPT_PROTOCOL_VERSION_ID;
+		pSPacket->BpduType = SK_RLMT_SPT_BPDU_TYPE;
+		pSPacket->Flags = SK_RLMT_SPT_FLAGS;
+		pSPacket->RootId[0] = SK_RLMT_SPT_ROOT_ID0;
+		pSPacket->RootId[1] = SK_RLMT_SPT_ROOT_ID1;
+		pSPacket->RootPathCost[0] = SK_RLMT_SPT_ROOT_PATH_COST0;
+		pSPacket->RootPathCost[1] = SK_RLMT_SPT_ROOT_PATH_COST1;
+		pSPacket->RootPathCost[2] = SK_RLMT_SPT_ROOT_PATH_COST2;
+		pSPacket->RootPathCost[3] = SK_RLMT_SPT_ROOT_PATH_COST3;
+		pSPacket->BridgeId[0] = SK_RLMT_SPT_BRIDGE_ID0;
+		pSPacket->BridgeId[1] = SK_RLMT_SPT_BRIDGE_ID1;
+
+		/*
+		 * Use logical MAC address as bridge ID and filter these packets
+		 * on receive.
+		 */
+		for (i = 0; i < SK_MAC_ADDR_LEN; i++) {
+			pSPacket->BridgeId[i + 2] = pSPacket->RootId[i + 2] =
+				pAC->Addr.Net[pAC->Rlmt.Port[PortNumber].Net->NetNumber].
+					CurrentMacAddress.a[i];
+		}
+		pSPacket->PortId[0] = SK_RLMT_SPT_PORT_ID0;
+		pSPacket->PortId[1] = SK_RLMT_SPT_PORT_ID1;
+		pSPacket->MessageAge[0] = SK_RLMT_SPT_MSG_AGE0;
+		pSPacket->MessageAge[1] = SK_RLMT_SPT_MSG_AGE1;
+		pSPacket->MaxAge[0] = SK_RLMT_SPT_MAX_AGE0;
+		pSPacket->MaxAge[1] = SK_RLMT_SPT_MAX_AGE1;
+		pSPacket->HelloTime[0] = SK_RLMT_SPT_HELLO_TIME0;
+		pSPacket->HelloTime[1] = SK_RLMT_SPT_HELLO_TIME1;
+		pSPacket->ForwardDelay[0] = SK_RLMT_SPT_FWD_DELAY0;
+		pSPacket->ForwardDelay[1] = SK_RLMT_SPT_FWD_DELAY1;
+
+		Length = SK_RLMT_MAX_PACKET_SIZE;	/* Or smaller. */
+		pMb->Length = Length;
+		pMb->PortIdx = PortNumber;
+		Length -= 14;
+		SK_U16_TO_NETWORK_ORDER(Length, &pSPacket->TypeLen[0]);
+
+		pAC->Rlmt.Port[PortNumber].TxSpHelloReqCts++;
+	}
+
+	return (pMb);
+}	/* SkRlmtBuildSpanningTreePacket */
+
+
+/******************************************************************************
+ *
+ *	SkRlmtSend - build and send check packets
+ *
+ * Description:
+ *	Depending on the RLMT state and the checking state, several packets
+ *	are sent through the indicated port.
+ *
+ * Context:
+ *	runtime, pageable?
+ *
+ * Returns:
+ *	Nothing.
+ */
+RLMT_STATIC void	SkRlmtSend(
+SK_AC	*pAC,		/* Adapter Context */
+SK_IOC	IoC,		/* I/O Context */
+SK_U32	PortNumber)	/* Sending port */
+{
+	unsigned	j;
+	SK_EVPARA	Para;
+	SK_RLMT_PORT	*pRPort;
+
+	pRPort = &pAC->Rlmt.Port[PortNumber];
+	if (pAC->Rlmt.Port[PortNumber].Net->RlmtMode & SK_RLMT_CHECK_LOC_LINK) {
+		if (pRPort->CheckingState & (SK_RLMT_PCS_TX | SK_RLMT_PCS_RX)) {
+			/* Port is suspicious. Send the RLMT packet to the RLMT mc addr. */
+			if ((Para.pParaPtr = SkRlmtBuildPacket(pAC, IoC, PortNumber,
+				SK_PACKET_ALIVE, &pAC->Addr.Port[PortNumber].CurrentMacAddress,
+				&SkRlmtMcAddr)) != NULL) {
+				SkEventQueue(pAC, SKGE_DRV, SK_DRV_RLMT_SEND, Para);
+			}
+		}
+		else {
+			/*
+			 * Send a directed RLMT packet to all ports that are
+			 * checked by the indicated port.
+			 */
+			for (j = 0; j < pRPort->PortsChecked; j++) {
+				if ((Para.pParaPtr = SkRlmtBuildPacket(pAC, IoC, PortNumber,
+					SK_PACKET_ALIVE, &pAC->Addr.Port[PortNumber].CurrentMacAddress,
+					&pRPort->PortCheck[j].CheckAddr)) != NULL) {
+					SkEventQueue(pAC, SKGE_DRV, SK_DRV_RLMT_SEND, Para);
+				}
+			}
+		}
+	}
+
+	if ((pAC->Rlmt.Port[PortNumber].Net->RlmtMode & SK_RLMT_CHECK_SEG) &&
+		(pAC->Rlmt.Port[PortNumber].Net->CheckingState & SK_RLMT_RCS_SEND_SEG)) {
+		/*
+		 * Send a BPDU packet to make a connected switch tell us
+		 * the correct root bridge.
+		 */
+		if ((Para.pParaPtr =
+			SkRlmtBuildSpanningTreePacket(pAC, IoC, PortNumber)) != NULL) {
+			pAC->Rlmt.Port[PortNumber].Net->CheckingState &= ~SK_RLMT_RCS_SEND_SEG;
+			pRPort->RootIdSet = SK_FALSE;
+
+			SkEventQueue(pAC, SKGE_DRV, SK_DRV_RLMT_SEND, Para);
+			SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_TX,
+				("SkRlmtSend: BPDU Packet on Port %u.\n", PortNumber))
+		}
+	}
+	return;
+}	/* SkRlmtSend */
+
+
+/******************************************************************************
+ *
+ *	SkRlmtPortReceives - check if port is (going) down and bring it up
+ *
+ * Description:
+ *	This routine checks if a port who received a non-BPDU packet
+ *	needs to go up or needs to be stopped going down.
+ *
+ * Context:
+ *	runtime, pageable?
+ *
+ * Returns:
+ *	Nothing.
+ */
+RLMT_STATIC void	SkRlmtPortReceives(
+SK_AC	*pAC,			/* Adapter Context */
+SK_IOC	IoC,			/* I/O Context */
+SK_U32	PortNumber)		/* Port to check */
+{
+	SK_RLMT_PORT	*pRPort;
+	SK_EVPARA		Para;
+
+	pRPort = &pAC->Rlmt.Port[PortNumber];
+	pRPort->PortNoRx = SK_FALSE;
+
+	if ((pRPort->PortState == SK_RLMT_PS_DOWN) &&
+		!(pRPort->CheckingState & SK_RLMT_PCS_TX)) {
+		/*
+		 * Port is marked down (rx), but received a non-BPDU packet.
+		 * Bring it up.
+		 */
+		SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_RX,
+			("SkRlmtPacketReceive: Received on PortDown.\n"))
+
+		pRPort->PortState = SK_RLMT_PS_GOING_UP;
+		pRPort->GuTimeStamp = SkOsGetTime(pAC);
+		Para.Para32[0] = PortNumber;
+		Para.Para32[1] = (SK_U32)-1;
+		SkTimerStart(pAC, IoC, &pRPort->UpTimer, SK_RLMT_PORTUP_TIM_VAL,
+			SKGE_RLMT, SK_RLMT_PORTUP_TIM, Para);
+		pRPort->CheckingState &= ~SK_RLMT_PCS_RX;
+		/* pAC->Rlmt.CheckSwitch = SK_TRUE; */
+		SkRlmtCheckSwitch(pAC, IoC, pRPort->Net->NetNumber);
+	}	/* PortDown && !SuspectTx */
+	else if (pRPort->CheckingState & SK_RLMT_PCS_RX) {
+		SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_RX,
+			("SkRlmtPacketReceive: Stop bringing port down.\n"))
+		SkTimerStop(pAC, IoC, &pRPort->DownRxTimer);
+		pRPort->CheckingState &= ~SK_RLMT_PCS_RX;
+		/* pAC->Rlmt.CheckSwitch = SK_TRUE; */
+		SkRlmtCheckSwitch(pAC, IoC, pRPort->Net->NetNumber);
+	}	/* PortGoingDown */
+
+	return;
+}	/* SkRlmtPortReceives */
+
+
+/******************************************************************************
+ *
+ *	SkRlmtPacketReceive - receive a packet for closer examination
+ *
+ * Description:
+ *	This routine examines a packet more closely than SK_RLMT_LOOKAHEAD.
+ *
+ * Context:
+ *	runtime, pageable?
+ *
+ * Returns:
+ *	Nothing.
+ */
+RLMT_STATIC void	SkRlmtPacketReceive(
+SK_AC	*pAC,	/* Adapter Context */
+SK_IOC	IoC,	/* I/O Context */
+SK_MBUF	*pMb)	/* Received packet */
+{
+#ifdef xDEBUG
+	extern	void DumpData(char *p, int size);
+#endif	/* DEBUG */
+	int					i;
+	unsigned			j;
+	SK_U16				PacketType;
+	SK_U32				PortNumber;
+	SK_ADDR_PORT		*pAPort;
+	SK_RLMT_PORT		*pRPort;
+	SK_RLMT_PACKET		*pRPacket;
+	SK_SPTREE_PACKET	*pSPacket;
+	SK_EVPARA			Para;
+
+	PortNumber	= pMb->PortIdx;
+	pAPort = &pAC->Addr.Port[PortNumber];
+	pRPort = &pAC->Rlmt.Port[PortNumber];
+
+	SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_RX,
+		("SkRlmtPacketReceive: PortNumber == %d.\n", PortNumber))
+
+	pRPacket = (SK_RLMT_PACKET*)pMb->pData;
+	pSPacket = (SK_SPTREE_PACKET*)pRPacket;
+
+#ifdef xDEBUG
+	DumpData((char *)pRPacket, 32);
+#endif	/* DEBUG */
+
+	if ((pRPort->PacketsPerTimeSlot - pRPort->BpduPacketsPerTimeSlot) != 0) {
+		SkRlmtPortReceives(pAC, IoC, PortNumber);
+	}
+	
+	/* Check destination address. */
+
+	if (!SK_ADDR_EQUAL(pAPort->CurrentMacAddress.a, pRPacket->DstAddr) &&
+		!SK_ADDR_EQUAL(SkRlmtMcAddr.a, pRPacket->DstAddr) &&
+		!SK_ADDR_EQUAL(BridgeMcAddr.a, pRPacket->DstAddr)) {
+
+		/* Not sent to current MAC or registered MC address => Trash it. */
+		SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_RX,
+			("SkRlmtPacketReceive: Not for me.\n"))
+
+		SkDrvFreeRlmtMbuf(pAC, IoC, pMb);
+		return;
+	}
+	else if (SK_ADDR_EQUAL(pAPort->CurrentMacAddress.a, pRPacket->SrcAddr)) {
+
+		/*
+		 * Was sent by same port (may happen during port switching
+		 * or in case of duplicate MAC addresses).
+		 */
+
+		/*
+		 * Check for duplicate address here:
+		 * If Packet.Random != My.Random => DupAddr.
+		 */
+		for (i = 3; i >= 0; i--) {
+			if (pRPort->Random[i] != pRPacket->Random[i]) {
+				break;
+			}
+		}
+
+		/*
+		 * CAUTION: Do not check for duplicate MAC address in RLMT Alive Reply
+		 * packets (they have the LLC_COMMAND_RESPONSE_BIT set in
+		 * pRPacket->SSap).
+		 */
+		if (i >= 0 && pRPacket->DSap == SK_RLMT_DSAP &&
+			pRPacket->Ctrl == SK_RLMT_CTRL &&
+			pRPacket->SSap == SK_RLMT_SSAP &&
+			pRPacket->Indicator[0] == SK_RLMT_INDICATOR0 &&
+			pRPacket->Indicator[1] == SK_RLMT_INDICATOR1 &&
+			pRPacket->Indicator[2] == SK_RLMT_INDICATOR2 &&
+			pRPacket->Indicator[3] == SK_RLMT_INDICATOR3 &&
+			pRPacket->Indicator[4] == SK_RLMT_INDICATOR4 &&
+			pRPacket->Indicator[5] == SK_RLMT_INDICATOR5 &&
+			pRPacket->Indicator[6] == SK_RLMT_INDICATOR6) {
+			SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_RX,
+				("SkRlmtPacketReceive: Duplicate MAC Address.\n"))
+
+			/* Error Log entry. */
+			SK_ERR_LOG(pAC, SK_ERRCL_COMM, SKERR_RLMT_E006, SKERR_RLMT_E006_MSG);
+		}
+		else {
+			/* Simply trash it. */
+			SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_RX,
+				("SkRlmtPacketReceive: Sent by me.\n"))
+		}
+
+		SkDrvFreeRlmtMbuf(pAC, IoC, pMb);
+		return;
+	}
+
+	/* Check SuspectTx entries. */
+	if (pRPort->PortsSuspect > 0) {
+		for (j = 0; j < pRPort->PortsChecked; j++) {
+			if (pRPort->PortCheck[j].SuspectTx &&
+				SK_ADDR_EQUAL(
+					pRPacket->SrcAddr, pRPort->PortCheck[j].CheckAddr.a)) {
+				pRPort->PortCheck[j].SuspectTx = SK_FALSE;
+				pRPort->PortsSuspect--;
+				break;
+			}
+		}
+	}
+
+	/* Determine type of packet. */
+	if (pRPacket->DSap == SK_RLMT_DSAP &&
+		pRPacket->Ctrl == SK_RLMT_CTRL &&
+		(pRPacket->SSap & ~LLC_COMMAND_RESPONSE_BIT) == SK_RLMT_SSAP &&
+		pRPacket->Indicator[0] == SK_RLMT_INDICATOR0 &&
+		pRPacket->Indicator[1] == SK_RLMT_INDICATOR1 &&
+		pRPacket->Indicator[2] == SK_RLMT_INDICATOR2 &&
+		pRPacket->Indicator[3] == SK_RLMT_INDICATOR3 &&
+		pRPacket->Indicator[4] == SK_RLMT_INDICATOR4 &&
+		pRPacket->Indicator[5] == SK_RLMT_INDICATOR5 &&
+		pRPacket->Indicator[6] == SK_RLMT_INDICATOR6) {
+
+		/* It's an RLMT packet. */
+		PacketType = (SK_U16)((pRPacket->RlmtPacketType[0] << 8) |
+			pRPacket->RlmtPacketType[1]);
+
+		switch (PacketType) {
+		case SK_PACKET_ANNOUNCE:	/* Not yet used. */
+#if 0
+			/* Build the check chain. */
+			SkRlmtBuildCheckChain(pAC);
+#endif	/* 0 */
+
+			SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_RX,
+				("SkRlmtPacketReceive: Announce.\n"))
+
+			SkDrvFreeRlmtMbuf(pAC, IoC, pMb);
+			break;
+
+		case SK_PACKET_ALIVE:
+			if (pRPacket->SSap & LLC_COMMAND_RESPONSE_BIT) {
+				SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_RX,
+					("SkRlmtPacketReceive: Alive Reply.\n"))
+
+				if (!(pAC->Addr.Port[PortNumber].PromMode & SK_PROM_MODE_LLC) ||
+					SK_ADDR_EQUAL(
+						pRPacket->DstAddr, pAPort->CurrentMacAddress.a)) {
+					/* Obviously we could send something. */
+					if (pRPort->CheckingState & SK_RLMT_PCS_TX) {
+						pRPort->CheckingState &=  ~SK_RLMT_PCS_TX;
+						SkTimerStop(pAC, IoC, &pRPort->DownTxTimer);
+					}
+
+					if ((pRPort->PortState == SK_RLMT_PS_DOWN) &&
+						!(pRPort->CheckingState & SK_RLMT_PCS_RX)) {
+						pRPort->PortState = SK_RLMT_PS_GOING_UP;
+						pRPort->GuTimeStamp = SkOsGetTime(pAC);
+
+						SkTimerStop(pAC, IoC, &pRPort->DownTxTimer);
+
+						Para.Para32[0] = PortNumber;
+						Para.Para32[1] = (SK_U32)-1;
+						SkTimerStart(pAC, IoC, &pRPort->UpTimer,
+							SK_RLMT_PORTUP_TIM_VAL, SKGE_RLMT,
+							SK_RLMT_PORTUP_TIM, Para);
+					}
+				}
+
+				/* Mark sending port as alive? */
+				SkDrvFreeRlmtMbuf(pAC, IoC, pMb);
+			}
+			else {	/* Alive Request Packet. */
+				SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_RX,
+					("SkRlmtPacketReceive: Alive Request.\n"))
+
+				pRPort->RxHelloCts++;
+
+				/* Answer. */
+				for (i = 0; i < SK_MAC_ADDR_LEN; i++) {
+					pRPacket->DstAddr[i] = pRPacket->SrcAddr[i];
+					pRPacket->SrcAddr[i] =
+						pAC->Addr.Port[PortNumber].CurrentMacAddress.a[i];
+				}
+				pRPacket->SSap |= LLC_COMMAND_RESPONSE_BIT;
+
+				Para.pParaPtr = pMb;
+				SkEventQueue(pAC, SKGE_DRV, SK_DRV_RLMT_SEND, Para);
+			}
+			break;
+
+		case SK_PACKET_CHECK_TX:
+			SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_RX,
+				("SkRlmtPacketReceive: Check your tx line.\n"))
+
+			/* A port checking us requests us to check our tx line. */
+			pRPort->CheckingState |= SK_RLMT_PCS_TX;
+
+			/* Start PortDownTx timer. */
+			Para.Para32[0] = PortNumber;
+			Para.Para32[1] = (SK_U32)-1;
+			SkTimerStart(pAC, IoC, &pRPort->DownTxTimer,
+				SK_RLMT_PORTDOWN_TIM_VAL, SKGE_RLMT,
+				SK_RLMT_PORTDOWN_TX_TIM, Para);
+
+			SkDrvFreeRlmtMbuf(pAC, IoC, pMb);
+
+			if ((Para.pParaPtr = SkRlmtBuildPacket(pAC, IoC, PortNumber,
+				SK_PACKET_ALIVE, &pAC->Addr.Port[PortNumber].CurrentMacAddress,
+				&SkRlmtMcAddr)) != NULL) {
+				SkEventQueue(pAC, SKGE_DRV, SK_DRV_RLMT_SEND, Para);
+			}
+			break;
+
+		case SK_PACKET_ADDR_CHANGED:
+			SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_RX,
+				("SkRlmtPacketReceive: Address Change.\n"))
+
+			/* Build the check chain. */
+			SkRlmtBuildCheckChain(pAC, pRPort->Net->NetNumber);
+			SkDrvFreeRlmtMbuf(pAC, IoC, pMb);
+			break;
+
+		default:
+			SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_RX,
+				("SkRlmtPacketReceive: Unknown RLMT packet.\n"))
+
+			/* RA;:;: ??? */
+			SkDrvFreeRlmtMbuf(pAC, IoC, pMb);
+		}
+	}
+	else if (pSPacket->DSap == SK_RLMT_SPT_DSAP &&
+		pSPacket->Ctrl == SK_RLMT_SPT_CTRL &&
+		(pSPacket->SSap & ~LLC_COMMAND_RESPONSE_BIT) == SK_RLMT_SPT_SSAP) {
+		SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_RX,
+			("SkRlmtPacketReceive: BPDU Packet.\n"))
+
+		/* Spanning Tree packet. */
+		pRPort->RxSpHelloCts++;
+
+		if (!SK_ADDR_EQUAL(&pSPacket->RootId[2], &pAC->Addr.Net[pAC->Rlmt.
+			Port[PortNumber].Net->NetNumber].CurrentMacAddress.a[0])) {
+			/*
+			 * Check segmentation if a new root bridge is set and
+			 * the segmentation check is not currently running.
+			 */
+			if (!SK_ADDR_EQUAL(&pSPacket->RootId[2], &pRPort->Root.Id[2]) &&
+				(pAC->Rlmt.Port[PortNumber].Net->LinksUp > 1) &&
+				(pAC->Rlmt.Port[PortNumber].Net->RlmtMode & SK_RLMT_CHECK_SEG)
+				!= 0 && (pAC->Rlmt.Port[PortNumber].Net->CheckingState &
+				SK_RLMT_RCS_SEG) == 0) {
+				pAC->Rlmt.Port[PortNumber].Net->CheckingState |=
+					SK_RLMT_RCS_START_SEG | SK_RLMT_RCS_SEND_SEG;
+			}
+
+			/* Store tree view of this port. */
+			for (i = 0; i < 8; i++) {
+				pRPort->Root.Id[i] = pSPacket->RootId[i];
+			}
+			pRPort->RootIdSet = SK_TRUE;
+
+			SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_DUMP,
+				("Root ID %d: %02x %02x %02x %02x %02x %02x %02x %02x.\n",
+					PortNumber,
+					pRPort->Root.Id[0], pRPort->Root.Id[1],
+					pRPort->Root.Id[2], pRPort->Root.Id[3],
+					pRPort->Root.Id[4], pRPort->Root.Id[5],
+					pRPort->Root.Id[6], pRPort->Root.Id[7]))
+		}
+
+		SkDrvFreeRlmtMbuf(pAC, IoC, pMb);
+		if ((pAC->Rlmt.Port[PortNumber].Net->CheckingState &
+			SK_RLMT_RCS_REPORT_SEG) != 0) {
+			SkRlmtCheckSeg(pAC, IoC, pAC->Rlmt.Port[PortNumber].Net->NetNumber);
+		}
+	}
+	else {
+		SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_RX,
+			("SkRlmtPacketReceive: Unknown Packet Type.\n"))
+
+		/* Unknown packet. */
+		SkDrvFreeRlmtMbuf(pAC, IoC, pMb);
+	}
+	return;
+}	/* SkRlmtPacketReceive */
+
+
+/******************************************************************************
+ *
+ *	SkRlmtCheckPort - check if a port works
+ *
+ * Description:
+ *	This routine checks if a port whose link is up received something
+ *	and if it seems to transmit successfully.
+ *
+ *	# PortState: PsInit, PsLinkDown, PsDown, PsGoingUp, PsUp
+ *	# PortCheckingState (Bitfield): ChkTx, ChkRx, ChkSeg
+ *	# RlmtCheckingState (Bitfield): ChkSeg, StartChkSeg, ReportSeg
+ *
+ *	if (Rx - RxBpdu == 0) {	# No rx.
+ *		if (state == PsUp) {
+ *			PortCheckingState |= ChkRx
+ *		}
+ *		if (ModeCheckSeg && (Timeout ==
+ *			TO_SHORTEN(RLMT_DEFAULT_TIMEOUT))) {
+ *			RlmtCheckingState |= ChkSeg)
+ *			PortCheckingState |= ChkSeg
+ *		}
+ *		NewTimeout = TO_SHORTEN(Timeout)
+ *		if (NewTimeout < RLMT_MIN_TIMEOUT) {
+ *			NewTimeout = RLMT_MIN_TIMEOUT
+ *			PortState = PsDown
+ *			...
+ *		}
+ *	}
+ *	else {	# something was received
+ *		# Set counter to 0 at LinkDown?
+ *		#   No - rx may be reported after LinkDown ???
+ *		PortCheckingState &= ~ChkRx
+ *		NewTimeout = RLMT_DEFAULT_TIMEOUT
+ *		if (RxAck == 0) {
+ *			possible reasons:
+ *			is my tx line bad? --
+ *				send RLMT multicast and report
+ *				back internally? (only possible
+ *				between ports on same adapter)
+ *		}
+ *		if (RxChk == 0) {
+ *			possible reasons:
+ *			- tx line of port set to check me
+ *			  maybe bad
+ *			- no other port/adapter available or set
+ *			  to check me
+ *			- adapter checking me has a longer
+ *			  timeout
+ *			??? anything that can be done here?
+ *		}
+ *	}
+ *
+ * Context:
+ *	runtime, pageable?
+ *
+ * Returns:
+ *	New timeout value.
+ */
+RLMT_STATIC SK_U32	SkRlmtCheckPort(
+SK_AC	*pAC,		/* Adapter Context */
+SK_IOC	IoC,		/* I/O Context */
+SK_U32	PortNumber)	/* Port to check */
+{
+	unsigned		i;
+	SK_U32			NewTimeout;
+	SK_RLMT_PORT	*pRPort;
+	SK_EVPARA		Para;
+
+	pRPort = &pAC->Rlmt.Port[PortNumber];
+
+	if ((pRPort->PacketsPerTimeSlot - pRPort->BpduPacketsPerTimeSlot) == 0) {
+		SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+			("SkRlmtCheckPort %d: No (%d) receives in last time slot.\n",
+				PortNumber, pRPort->PacketsPerTimeSlot))
+
+		/*
+		 * Check segmentation if there was no receive at least twice
+		 * in a row (PortNoRx is already set) and the segmentation
+		 * check is not currently running.
+		 */
+
+		if (pRPort->PortNoRx && (pAC->Rlmt.Port[PortNumber].Net->LinksUp > 1) &&
+			(pAC->Rlmt.Port[PortNumber].Net->RlmtMode & SK_RLMT_CHECK_SEG) &&
+			!(pAC->Rlmt.Port[PortNumber].Net->CheckingState & SK_RLMT_RCS_SEG)) {
+			pAC->Rlmt.Port[PortNumber].Net->CheckingState |=
+				SK_RLMT_RCS_START_SEG | SK_RLMT_RCS_SEND_SEG;
+		}
+
+		SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+			("SkRlmtCheckPort: PortsSuspect %d, PcsRx %d.\n",
+				pRPort->PortsSuspect, pRPort->CheckingState & SK_RLMT_PCS_RX))
+
+		if (pRPort->PortState != SK_RLMT_PS_DOWN) {
+			NewTimeout = TO_SHORTEN(pAC->Rlmt.Port[PortNumber].Net->TimeoutValue);
+			if (NewTimeout < SK_RLMT_MIN_TO_VAL) {
+				NewTimeout = SK_RLMT_MIN_TO_VAL;
+			}
+
+			if (!(pRPort->CheckingState & SK_RLMT_PCS_RX)) {
+				Para.Para32[0] = PortNumber;
+				pRPort->CheckingState |= SK_RLMT_PCS_RX;
+
+				/*
+				 * What shall we do if the port checked by this one receives
+				 * our request frames?  What's bad - our rx line or his tx line?
+				 */
+				Para.Para32[1] = (SK_U32)-1;
+				SkTimerStart(pAC, IoC, &pRPort->DownRxTimer,
+					SK_RLMT_PORTDOWN_TIM_VAL, SKGE_RLMT,
+					SK_RLMT_PORTDOWN_RX_TIM, Para);
+
+				for (i = 0; i < pRPort->PortsChecked; i++) {
+					if (pRPort->PortCheck[i].SuspectTx) {
+						continue;
+					}
+					pRPort->PortCheck[i].SuspectTx = SK_TRUE;
+					pRPort->PortsSuspect++;
+					if ((Para.pParaPtr =
+						SkRlmtBuildPacket(pAC, IoC, PortNumber, SK_PACKET_CHECK_TX,
+							&pAC->Addr.Port[PortNumber].CurrentMacAddress,
+							&pRPort->PortCheck[i].CheckAddr)) != NULL) {
+						SkEventQueue(pAC, SKGE_DRV, SK_DRV_RLMT_SEND, Para);
+					}
+				}
+			}
+		}
+		else {	/* PortDown -- or all partners suspect. */
+			NewTimeout = SK_RLMT_DEF_TO_VAL;
+		}
+		pRPort->PortNoRx = SK_TRUE;
+	}
+	else {	/* A non-BPDU packet was received. */
+		SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+			("SkRlmtCheckPort %d: %d (%d) receives in last time slot.\n",
+				PortNumber,
+				pRPort->PacketsPerTimeSlot - pRPort->BpduPacketsPerTimeSlot,
+				pRPort->PacketsPerTimeSlot))
+		
+		SkRlmtPortReceives(pAC, IoC, PortNumber);
+		if (pAC->Rlmt.CheckSwitch) {
+			SkRlmtCheckSwitch(pAC, IoC, pRPort->Net->NetNumber);
+		}
+
+		NewTimeout = SK_RLMT_DEF_TO_VAL;
+	}
+
+	return (NewTimeout);
+}	/* SkRlmtCheckPort */
+
+
+/******************************************************************************
+ *
+ *	SkRlmtSelectBcRx - select new active port, criteria 1 (CLP)
+ *
+ * Description:
+ *	This routine selects the port that received a broadcast frame
+ *	substantially later than all other ports.
+ *
+ * Context:
+ *	runtime, pageable?
+ *
+ * Returns:
+ *	SK_BOOL
+ */
+RLMT_STATIC SK_BOOL	SkRlmtSelectBcRx(
+SK_AC	*pAC,		/* Adapter Context */
+SK_IOC	IoC,		/* I/O Context */
+SK_U32	Active,		/* Active port */
+SK_U32	PrefPort,	/* Preferred port */
+SK_U32	*pSelect)	/* New active port */
+{
+	SK_U64		BcTimeStamp;
+	SK_U32		i;
+	SK_BOOL		PortFound;
+
+	BcTimeStamp = 0;	/* Not totally necessary, but feeling better. */
+	PortFound = SK_FALSE;
+	
+	/* Select port with the latest TimeStamp. */
+	for (i = 0; i < (SK_U32)pAC->GIni.GIMacsFound; i++) {
+
+		SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+			("TimeStamp Port %d (Down: %d, NoRx: %d): %08x %08x.\n",
+				i,
+   				pAC->Rlmt.Port[i].PortDown, pAC->Rlmt.Port[i].PortNoRx,
+				*((SK_U32*)(&pAC->Rlmt.Port[i].BcTimeStamp) + OFFS_HI32),
+				*((SK_U32*)(&pAC->Rlmt.Port[i].BcTimeStamp) + OFFS_LO32)))
+
+		if (!pAC->Rlmt.Port[i].PortDown && !pAC->Rlmt.Port[i].PortNoRx) {
+			if (!PortFound || pAC->Rlmt.Port[i].BcTimeStamp > BcTimeStamp) {
+				BcTimeStamp = pAC->Rlmt.Port[i].BcTimeStamp;
+				*pSelect = i;
+				PortFound = SK_TRUE;
+			}
+		}
+	}
+
+	if (PortFound) {
+		SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+			("Port %d received the last broadcast.\n", *pSelect))
+
+		/* Look if another port's time stamp is similar. */
+		for (i = 0; i < (SK_U32)pAC->GIni.GIMacsFound; i++) {
+			if (i == *pSelect) {
+				continue;
+			}
+			if (!pAC->Rlmt.Port[i].PortDown && !pAC->Rlmt.Port[i].PortNoRx &&
+				(pAC->Rlmt.Port[i].BcTimeStamp >
+				 BcTimeStamp - SK_RLMT_BC_DELTA ||
+				pAC->Rlmt.Port[i].BcTimeStamp +
+				 SK_RLMT_BC_DELTA > BcTimeStamp)) {
+				PortFound = SK_FALSE;
+				
+				SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+					("Port %d received a broadcast at a similar time.\n", i))
+				break;
+			}
+		}
+	}
+
+#ifdef DEBUG
+	if (PortFound) {
+		SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+			("SK_RLMT_SELECT_BCRX found Port %d receiving the substantially "
+			 "latest broadcast (%u).\n",
+				*pSelect,
+				BcTimeStamp - pAC->Rlmt.Port[1 - *pSelect].BcTimeStamp))
+	}
+#endif	/* DEBUG */
+
+	return (PortFound);
+}	/* SkRlmtSelectBcRx */
+
+
+/******************************************************************************
+ *
+ *	SkRlmtSelectNotSuspect - select new active port, criteria 2 (CLP)
+ *
+ * Description:
+ *	This routine selects a good port (it is PortUp && !SuspectRx).
+ *
+ * Context:
+ *	runtime, pageable?
+ *
+ * Returns:
+ *	SK_BOOL
+ */
+RLMT_STATIC SK_BOOL	SkRlmtSelectNotSuspect(
+SK_AC	*pAC,		/* Adapter Context */
+SK_IOC	IoC,		/* I/O Context */
+SK_U32	Active,		/* Active port */
+SK_U32	PrefPort,	/* Preferred port */
+SK_U32	*pSelect)	/* New active port */
+{
+	SK_U32		i;
+	SK_BOOL		PortFound;
+
+	PortFound = SK_FALSE;
+
+	/* Select first port that is PortUp && !SuspectRx. */
+	for (i = 0; i < (SK_U32)pAC->GIni.GIMacsFound; i++) {
+		if (!pAC->Rlmt.Port[i].PortDown &&
+			!(pAC->Rlmt.Port[i].CheckingState & SK_RLMT_PCS_RX)) {
+			*pSelect = i;
+			if (!pAC->Rlmt.Port[Active].PortDown &&
+				!(pAC->Rlmt.Port[Active].CheckingState & SK_RLMT_PCS_RX)) {
+				*pSelect = Active;
+			}
+			if (!pAC->Rlmt.Port[PrefPort].PortDown &&
+				!(pAC->Rlmt.Port[PrefPort].CheckingState & SK_RLMT_PCS_RX)) {
+				*pSelect = PrefPort;
+			}
+			PortFound = SK_TRUE;
+			SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+				("SK_RLMT_SELECT_NOTSUSPECT found Port %d up and not check RX.\n",
+					*pSelect))
+			break;
+		}
+	}
+	return (PortFound);
+}	/* SkRlmtSelectNotSuspect */
+
+
+/******************************************************************************
+ *
+ *	SkRlmtSelectUp - select new active port, criteria 3, 4 (CLP)
+ *
+ * Description:
+ *	This routine selects a port that is up.
+ *
+ * Context:
+ *	runtime, pageable?
+ *
+ * Returns:
+ *	SK_BOOL
+ */
+RLMT_STATIC SK_BOOL	SkRlmtSelectUp(
+SK_AC	*pAC,			/* Adapter Context */
+SK_IOC	IoC,			/* I/O Context */
+SK_U32	Active,			/* Active port */
+SK_U32	PrefPort,		/* Preferred port */
+SK_U32	*pSelect,		/* New active port */
+SK_BOOL	AutoNegDone)	/* Successfully auto-negotiated? */
+{
+	SK_U32		i;
+	SK_BOOL		PortFound;
+
+	PortFound = SK_FALSE;
+
+	/* Select first port that is PortUp. */
+	for (i = 0; i < (SK_U32)pAC->GIni.GIMacsFound; i++) {
+		if (pAC->Rlmt.Port[i].PortState == SK_RLMT_PS_UP &&
+			pAC->GIni.GP[i].PAutoNegFail != AutoNegDone) {
+			*pSelect = i;
+			if (pAC->Rlmt.Port[Active].PortState == SK_RLMT_PS_UP &&
+				pAC->GIni.GP[Active].PAutoNegFail != AutoNegDone) {
+				*pSelect = Active;
+			}
+			if (pAC->Rlmt.Port[PrefPort].PortState == SK_RLMT_PS_UP &&
+				pAC->GIni.GP[PrefPort].PAutoNegFail != AutoNegDone) {
+				*pSelect = PrefPort;
+			}
+			PortFound = SK_TRUE;
+			SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+				("SK_RLMT_SELECT_UP found Port %d up.\n", *pSelect))
+			break;
+		}
+	}
+	return (PortFound);
+}	/* SkRlmtSelectUp */
+
+
+/******************************************************************************
+ *
+ *	SkRlmtSelectGoingUp - select new active port, criteria 5, 6 (CLP)
+ *
+ * Description:
+ *	This routine selects the port that is going up for the longest time.
+ *
+ * Context:
+ *	runtime, pageable?
+ *
+ * Returns:
+ *	SK_BOOL
+ */
+RLMT_STATIC SK_BOOL	SkRlmtSelectGoingUp(
+SK_AC	*pAC,			/* Adapter Context */
+SK_IOC	IoC,			/* I/O Context */
+SK_U32	Active,			/* Active port */
+SK_U32	PrefPort,		/* Preferred port */
+SK_U32	*pSelect,		/* New active port */
+SK_BOOL	AutoNegDone)	/* Successfully auto-negotiated? */
+{
+	SK_U64		GuTimeStamp;
+	SK_U32		i;
+	SK_BOOL		PortFound;
+
+	GuTimeStamp = 0;
+	PortFound = SK_FALSE;
+
+	/* Select port that is PortGoingUp for the longest time. */
+	for (i = 0; i < (SK_U32)pAC->GIni.GIMacsFound; i++) {
+		if (pAC->Rlmt.Port[i].PortState == SK_RLMT_PS_GOING_UP &&
+			pAC->GIni.GP[i].PAutoNegFail != AutoNegDone) {
+			GuTimeStamp = pAC->Rlmt.Port[i].GuTimeStamp;
+			*pSelect = i;
+			PortFound = SK_TRUE;
+			break;
+		}
+	}
+
+	if (!PortFound) {
+		return (SK_FALSE);
+	}
+
+	for (i = *pSelect + 1; i < (SK_U32)pAC->GIni.GIMacsFound; i++) {
+		if (pAC->Rlmt.Port[i].PortState == SK_RLMT_PS_GOING_UP &&
+			pAC->Rlmt.Port[i].GuTimeStamp < GuTimeStamp &&
+			pAC->GIni.GP[i].PAutoNegFail != AutoNegDone) {
+			GuTimeStamp = pAC->Rlmt.Port[i].GuTimeStamp;
+			*pSelect = i;
+		}
+	}
+
+	SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+		("SK_RLMT_SELECT_GOINGUP found Port %d going up.\n", *pSelect))
+	return (SK_TRUE);
+}	/* SkRlmtSelectGoingUp */
+
+
+/******************************************************************************
+ *
+ *	SkRlmtSelectDown - select new active port, criteria 7, 8 (CLP)
+ *
+ * Description:
+ *	This routine selects a port that is down.
+ *
+ * Context:
+ *	runtime, pageable?
+ *
+ * Returns:
+ *	SK_BOOL
+ */
+RLMT_STATIC SK_BOOL	SkRlmtSelectDown(
+SK_AC	*pAC,			/* Adapter Context */
+SK_IOC	IoC,			/* I/O Context */
+SK_U32	Active,			/* Active port */
+SK_U32	PrefPort,		/* Preferred port */
+SK_U32	*pSelect,		/* New active port */
+SK_BOOL	AutoNegDone)	/* Successfully auto-negotiated? */
+{
+	SK_U32		i;
+	SK_BOOL		PortFound;
+
+	PortFound = SK_FALSE;
+
+	/* Select first port that is PortDown. */
+	for (i = 0; i < (SK_U32)pAC->GIni.GIMacsFound; i++) {
+		if (pAC->Rlmt.Port[i].PortState == SK_RLMT_PS_DOWN &&
+			pAC->GIni.GP[i].PAutoNegFail != AutoNegDone) {
+			*pSelect = i;
+			if (pAC->Rlmt.Port[Active].PortState == SK_RLMT_PS_DOWN &&
+				pAC->GIni.GP[Active].PAutoNegFail != AutoNegDone) {
+				*pSelect = Active;
+			}
+			if (pAC->Rlmt.Port[PrefPort].PortState == SK_RLMT_PS_DOWN &&
+				pAC->GIni.GP[PrefPort].PAutoNegFail != AutoNegDone) {
+				*pSelect = PrefPort;
+			}
+			PortFound = SK_TRUE;
+			SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+				("SK_RLMT_SELECT_DOWN found Port %d down.\n", *pSelect))
+			break;
+		}
+	}
+	return (PortFound);
+}	/* SkRlmtSelectDown */
+
+
+/******************************************************************************
+ *
+ *	SkRlmtCheckSwitch - select new active port and switch to it
+ *
+ * Description:
+ *	This routine decides which port should be the active one and queues
+ *	port switching if necessary.
+ *
+ * Context:
+ *	runtime, pageable?
+ *
+ * Returns:
+ *	Nothing.
+ */
+RLMT_STATIC void	SkRlmtCheckSwitch(
+SK_AC	*pAC,	/* Adapter Context */
+SK_IOC	IoC,	/* I/O Context */
+SK_U32	NetIdx)	/* Net index */
+{
+	SK_EVPARA	Para;
+	SK_U32		Active;
+	SK_U32		PrefPort;
+	SK_U32		i;
+	SK_BOOL		PortFound;
+
+	Active = pAC->Rlmt.Net[NetIdx].ActivePort;	/* Index of active port. */
+	PrefPort = pAC->Rlmt.Net[NetIdx].PrefPort;	/* Index of preferred port. */
+	PortFound = SK_FALSE;
+	pAC->Rlmt.CheckSwitch = SK_FALSE;
+
+#if 0	/* RW 2001/10/18 - active port becomes always prefered one */
+	if (pAC->Rlmt.Net[NetIdx].Preference == 0xFFFFFFFF) { /* Automatic */
+		/* disable auto-fail back */
+		PrefPort = Active;
+	}
+#endif
+
+	if (pAC->Rlmt.Net[NetIdx].LinksUp == 0) {
+		/* Last link went down - shut down the net. */
+		pAC->Rlmt.Net[NetIdx].RlmtState = SK_RLMT_RS_NET_DOWN;
+		Para.Para32[0] = SK_RLMT_NET_DOWN_TEMP;
+		Para.Para32[1] = NetIdx;
+		SkEventQueue(pAC, SKGE_DRV, SK_DRV_NET_DOWN, Para);
+
+		Para.Para32[0] = pAC->Rlmt.Net[NetIdx].
+			Port[pAC->Rlmt.Net[NetIdx].ActivePort]->PortNumber;
+		Para.Para32[1] = NetIdx;
+		SkEventQueue(pAC, SKGE_PNMI, SK_PNMI_EVT_RLMT_ACTIVE_DOWN, Para);
+		return;
+	}	/* pAC->Rlmt.LinksUp == 0 */
+	else if (pAC->Rlmt.Net[NetIdx].LinksUp == 1 &&
+		pAC->Rlmt.Net[NetIdx].RlmtState == SK_RLMT_RS_NET_DOWN) {
+		/* First link came up - get the net up. */
+		pAC->Rlmt.Net[NetIdx].RlmtState = SK_RLMT_RS_NET_UP;
+
+		/*
+		 * If pAC->Rlmt.ActivePort != Para.Para32[0],
+		 * the DRV switches to the port that came up.
+		 */
+		for (i = 0; i < pAC->Rlmt.Net[NetIdx].NumPorts; i++) {
+			if (!pAC->Rlmt.Net[NetIdx].Port[i]->LinkDown) {
+				if (!pAC->Rlmt.Net[NetIdx].Port[Active]->LinkDown) {
+					i = Active;
+				}
+				if (!pAC->Rlmt.Net[NetIdx].Port[PrefPort]->LinkDown) {
+					i = PrefPort;
+				}
+				PortFound = SK_TRUE;
+				break;
+			}
+		}
+
+		if (PortFound) {
+			Para.Para32[0] = pAC->Rlmt.Net[NetIdx].Port[i]->PortNumber;
+			Para.Para32[1] = NetIdx;
+			SkEventQueue(pAC, SKGE_PNMI, SK_PNMI_EVT_RLMT_ACTIVE_UP, Para);
+
+			pAC->Rlmt.Net[NetIdx].ActivePort = i;
+			Para.Para32[0] = pAC->Rlmt.Net[NetIdx].Port[i]->PortNumber;
+			Para.Para32[1] = NetIdx;
+			SkEventQueue(pAC, SKGE_DRV, SK_DRV_NET_UP, Para);
+
+			if ((pAC->Rlmt.Net[NetIdx].RlmtMode & SK_RLMT_TRANSPARENT) == 0 &&
+				(Para.pParaPtr = SkRlmtBuildPacket(pAC, IoC,
+				pAC->Rlmt.Net[NetIdx].Port[i]->PortNumber,
+				SK_PACKET_ANNOUNCE, &pAC->Addr.Net[NetIdx].
+				CurrentMacAddress, &SkRlmtMcAddr)) != NULL) {
+				/*
+				 * Send announce packet to RLMT multicast address to force
+				 * switches to learn the new location of the logical MAC address.
+				 */
+				SkEventQueue(pAC, SKGE_DRV, SK_DRV_RLMT_SEND, Para);
+			}
+		}
+		else {
+			SK_ERR_LOG(pAC, SK_ERRCL_SW, SKERR_RLMT_E007, SKERR_RLMT_E007_MSG);
+		}
+
+		return;
+	}	/* LinksUp == 1 && RlmtState == SK_RLMT_RS_NET_DOWN */
+	else {	/* Cannot be reached in dual-net mode. */
+		Para.Para32[0] = Active;
+
+		/*
+		 * Preselection:
+		 *	If RLMT Mode != CheckLinkState
+		 *		select port that received a broadcast frame substantially later
+		 *		than all other ports
+		 *	else select first port that is not SuspectRx
+		 *	else select first port that is PortUp
+		 *	else select port that is PortGoingUp for the longest time
+		 *	else select first port that is PortDown
+		 *	else stop.
+		 *
+		 * For the preselected port:
+		 *	If ActivePort is equal in quality, select ActivePort.
+		 *
+		 *	If PrefPort is equal in quality, select PrefPort.
+		 *
+		 *	If ActivePort != SelectedPort,
+		 *		If old ActivePort is LinkDown,
+		 *			SwitchHard
+		 *		else
+		 *			SwitchSoft
+		 */
+		/* check of ChgBcPrio flag added */
+		if ((pAC->Rlmt.Net[0].RlmtMode != SK_RLMT_MODE_CLS) &&
+			(!pAC->Rlmt.Net[0].ChgBcPrio)) {
+			
+			if (!PortFound) {
+				PortFound = SkRlmtSelectBcRx(
+					pAC, IoC, Active, PrefPort, &Para.Para32[1]);
+			}
+
+			if (!PortFound) {
+				PortFound = SkRlmtSelectNotSuspect(
+					pAC, IoC, Active, PrefPort, &Para.Para32[1]);
+			}
+		}	/* pAC->Rlmt.RlmtMode != SK_RLMT_MODE_CLS */
+
+		/* with changed priority for last broadcast received */
+		if ((pAC->Rlmt.Net[0].RlmtMode != SK_RLMT_MODE_CLS) &&
+			(pAC->Rlmt.Net[0].ChgBcPrio)) {
+			if (!PortFound) {
+				PortFound = SkRlmtSelectNotSuspect(
+					pAC, IoC, Active, PrefPort, &Para.Para32[1]);
+			}
+
+			if (!PortFound) {
+				PortFound = SkRlmtSelectBcRx(
+					pAC, IoC, Active, PrefPort, &Para.Para32[1]);
+			}
+		}	/* pAC->Rlmt.RlmtMode != SK_RLMT_MODE_CLS */
+
+		if (!PortFound) {
+			PortFound = SkRlmtSelectUp(
+				pAC, IoC, Active, PrefPort, &Para.Para32[1], AUTONEG_SUCCESS);
+		}
+
+		if (!PortFound) {
+			PortFound = SkRlmtSelectUp(
+				pAC, IoC, Active, PrefPort, &Para.Para32[1], AUTONEG_FAILED);
+		}
+
+		if (!PortFound) {
+			PortFound = SkRlmtSelectGoingUp(
+				pAC, IoC, Active, PrefPort, &Para.Para32[1], AUTONEG_SUCCESS);
+		}
+
+		if (!PortFound) {
+			PortFound = SkRlmtSelectGoingUp(
+				pAC, IoC, Active, PrefPort, &Para.Para32[1], AUTONEG_FAILED);
+		}
+
+		if (pAC->Rlmt.Net[0].RlmtMode != SK_RLMT_MODE_CLS) {
+			if (!PortFound) {
+				PortFound = SkRlmtSelectDown(pAC, IoC,
+					Active, PrefPort, &Para.Para32[1], AUTONEG_SUCCESS);
+			}
+
+			if (!PortFound) {
+				PortFound = SkRlmtSelectDown(pAC, IoC,
+					Active, PrefPort, &Para.Para32[1], AUTONEG_FAILED);
+			}
+		}	/* pAC->Rlmt.RlmtMode != SK_RLMT_MODE_CLS */
+
+		if (PortFound) {
+
+			if (Para.Para32[1] != Active) {
+				SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+					("Active: %d, Para1: %d.\n", Active, Para.Para32[1]))
+				pAC->Rlmt.Net[NetIdx].ActivePort = Para.Para32[1];
+				Para.Para32[0] = pAC->Rlmt.Net[NetIdx].
+					Port[Para.Para32[0]]->PortNumber;
+				Para.Para32[1] = pAC->Rlmt.Net[NetIdx].
+					Port[Para.Para32[1]]->PortNumber;
+				SK_HWAC_LINK_LED(pAC, IoC, Para.Para32[1], SK_LED_ACTIVE);
+				if (pAC->Rlmt.Port[Active].LinkDown) {
+					SkEventQueue(pAC, SKGE_DRV, SK_DRV_SWITCH_HARD, Para);
+				}
+				else {
+					SK_HWAC_LINK_LED(pAC, IoC, Para.Para32[0], SK_LED_STANDBY);
+					SkEventQueue(pAC, SKGE_DRV, SK_DRV_SWITCH_SOFT, Para);
+				}
+				Para.Para32[1] = NetIdx;
+				Para.Para32[0] =
+					pAC->Rlmt.Net[NetIdx].Port[Para.Para32[0]]->PortNumber;
+				SkEventQueue(pAC, SKGE_PNMI, SK_PNMI_EVT_RLMT_ACTIVE_DOWN, Para);
+				Para.Para32[0] = pAC->Rlmt.Net[NetIdx].
+					Port[pAC->Rlmt.Net[NetIdx].ActivePort]->PortNumber;
+				SkEventQueue(pAC, SKGE_PNMI, SK_PNMI_EVT_RLMT_ACTIVE_UP, Para);
+				if ((pAC->Rlmt.Net[NetIdx].RlmtMode & SK_RLMT_TRANSPARENT) == 0 &&
+					(Para.pParaPtr = SkRlmtBuildPacket(pAC, IoC, Para.Para32[0],
+					SK_PACKET_ANNOUNCE, &pAC->Addr.Net[NetIdx].CurrentMacAddress,
+					&SkRlmtMcAddr)) != NULL) {
+					/*
+					 * Send announce packet to RLMT multicast address to force
+					 * switches to learn the new location of the logical
+					 * MAC address.
+					 */
+					SkEventQueue(pAC, SKGE_DRV, SK_DRV_RLMT_SEND, Para);
+				}	/* (Para.pParaPtr = SkRlmtBuildPacket(...)) != NULL */
+			}	/* Para.Para32[1] != Active */
+		}	/* PortFound */
+		else {
+			SK_ERR_LOG(pAC, SK_ERRCL_SW, SKERR_RLMT_E004, SKERR_RLMT_E004_MSG);
+		}
+	}	/* LinksUp > 1 || LinksUp == 1 && RlmtState != SK_RLMT_RS_NET_DOWN */
+	return;
+}	/* SkRlmtCheckSwitch */
+
+
+/******************************************************************************
+ *
+ *	SkRlmtCheckSeg - Report if segmentation is detected
+ *
+ * Description:
+ *	This routine checks if the ports see different root bridges and reports
+ *	segmentation in such a case.
+ *
+ * Context:
+ *	runtime, pageable?
+ *
+ * Returns:
+ *	Nothing.
+ */
+RLMT_STATIC void	SkRlmtCheckSeg(
+SK_AC	*pAC,	/* Adapter Context */
+SK_IOC	IoC,	/* I/O Context */
+SK_U32	NetIdx)	/* Net number */
+{
+	SK_EVPARA	Para;
+	SK_RLMT_NET	*pNet;
+	SK_U32		i, j;
+	SK_BOOL		Equal;
+
+	pNet = &pAC->Rlmt.Net[NetIdx];
+	pNet->RootIdSet = SK_FALSE;
+	Equal = SK_TRUE;
+
+	for (i = 0; i < pNet->NumPorts; i++) {
+		if (pNet->Port[i]->LinkDown || !pNet->Port[i]->RootIdSet) {
+			continue;
+		}
+
+		SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_DUMP,
+			("Root ID %d: %02x %02x %02x %02x %02x %02x %02x %02x.\n", i,
+				pNet->Port[i]->Root.Id[0], pNet->Port[i]->Root.Id[1],
+				pNet->Port[i]->Root.Id[2], pNet->Port[i]->Root.Id[3],
+				pNet->Port[i]->Root.Id[4], pNet->Port[i]->Root.Id[5],
+				pNet->Port[i]->Root.Id[6], pNet->Port[i]->Root.Id[7]))
+
+		if (!pNet->RootIdSet) {
+			pNet->Root = pNet->Port[i]->Root;
+			pNet->RootIdSet = SK_TRUE;
+			continue;
+		}
+
+		for (j = 0; j < 8; j ++) {
+			Equal &= pNet->Port[i]->Root.Id[j] == pNet->Root.Id[j];
+			if (!Equal) {
+				break;
+			}
+		}
+		
+		if (!Equal) {
+			SK_ERR_LOG(pAC, SK_ERRCL_COMM, SKERR_RLMT_E005, SKERR_RLMT_E005_MSG);
+			Para.Para32[0] = NetIdx;
+			Para.Para32[1] = (SK_U32)-1;
+			SkEventQueue(pAC, SKGE_PNMI, SK_PNMI_EVT_RLMT_SEGMENTATION, Para);
+
+			pNet->CheckingState &= ~SK_RLMT_RCS_REPORT_SEG;
+
+			/* 2000-03-06 RA: New. */
+			Para.Para32[0] = NetIdx;
+			Para.Para32[1] = (SK_U32)-1;
+			SkTimerStart(pAC, IoC, &pNet->SegTimer, SK_RLMT_SEG_TO_VAL,
+				SKGE_RLMT, SK_RLMT_SEG_TIM, Para);
+			break;
+		}
+	}	/* for (i = 0; i < pNet->NumPorts; i++) */
+
+	/* 2000-03-06 RA: Moved here. */
+	/* Segmentation check not running anymore. */
+	pNet->CheckingState &= ~SK_RLMT_RCS_SEG;
+
+}	/* SkRlmtCheckSeg */
+
+
+/******************************************************************************
+ *
+ *	SkRlmtPortStart - initialize port variables and start port
+ *
+ * Description:
+ *	This routine initializes a port's variables and issues a PORT_START
+ *	to the HWAC module.  This handles retries if the start fails or the
+ *	link eventually goes down.
+ *
+ * Context:
+ *	runtime, pageable?
+ *
+ * Returns:
+ *	Nothing
+ */
+RLMT_STATIC void	SkRlmtPortStart(
+SK_AC	*pAC,		/* Adapter Context */
+SK_IOC	IoC,		/* I/O Context */
+SK_U32	PortNumber)	/* Port number */
+{
+	SK_EVPARA	Para;
+
+	pAC->Rlmt.Port[PortNumber].PortState = SK_RLMT_PS_LINK_DOWN;
+	pAC->Rlmt.Port[PortNumber].PortStarted = SK_TRUE;
+	pAC->Rlmt.Port[PortNumber].LinkDown = SK_TRUE;
+	pAC->Rlmt.Port[PortNumber].PortDown = SK_TRUE;
+	pAC->Rlmt.Port[PortNumber].CheckingState = 0;
+	pAC->Rlmt.Port[PortNumber].RootIdSet = SK_FALSE;
+	Para.Para32[0] = PortNumber;
+	Para.Para32[1] = (SK_U32)-1;
+	SkEventQueue(pAC, SKGE_HWAC, SK_HWEV_PORT_START, Para);
+}	/* SkRlmtPortStart */
+
+
+/******************************************************************************
+ *
+ *	SkRlmtEvtPortStartTim - PORT_START_TIM
+ *
+ * Description:
+ *	This routine handles PORT_START_TIM events.
+ *
+ * Context:
+ *	runtime, pageable?
+ *	may be called after SK_INIT_IO
+ *
+ * Returns:
+ *	Nothing
+ */
+RLMT_STATIC void	SkRlmtEvtPortStartTim(
+SK_AC		*pAC,	/* Adapter Context */
+SK_IOC		IoC,	/* I/O Context */
+SK_EVPARA	Para)	/* SK_U32 PortNumber; SK_U32 -1 */
+{
+	SK_U32			i;
+
+	SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+		("SK_RLMT_PORTSTART_TIMEOUT Port %d Event BEGIN.\n", Para.Para32[0]))
+
+		if (Para.Para32[1] != (SK_U32)-1) {
+		SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+			("Bad Parameter.\n"))
+		SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+			("SK_RLMT_PORTSTART_TIMEOUT Event EMPTY.\n"))
+		return;
+	}
+
+	/*
+	 * Used to start non-preferred ports if the preferred one
+	 * does not come up.
+	 * This timeout needs only be set when starting the first
+	 * (preferred) port.
+	 */
+	if (pAC->Rlmt.Port[Para.Para32[0]].LinkDown) {
+		/* PORT_START failed. */
+		for (i = 0; i < pAC->Rlmt.Port[Para.Para32[0]].Net->NumPorts; i++) {
+			if (!pAC->Rlmt.Port[Para.Para32[0]].Net->Port[i]->PortStarted) {
+				SkRlmtPortStart(pAC, IoC,
+					pAC->Rlmt.Port[Para.Para32[0]].Net->Port[i]->PortNumber);
+			}
+		}
+	}
+
+	SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+		("SK_RLMT_PORTSTART_TIMEOUT Event END.\n"))
+}	/* SkRlmtEvtPortStartTim */
+
+
+/******************************************************************************
+ *
+ *	SkRlmtEvtLinkUp - LINK_UP
+ *
+ * Description:
+ *	This routine handles LLINK_UP events.
+ *
+ * Context:
+ *	runtime, pageable?
+ *	may be called after SK_INIT_IO
+ *
+ * Returns:
+ *	Nothing
+ */
+RLMT_STATIC void	SkRlmtEvtLinkUp(
+SK_AC		*pAC,	/* Adapter Context */
+SK_IOC		IoC,	/* I/O Context */
+SK_EVPARA	Para)	/* SK_U32 PortNumber; SK_U32 Undefined */
+{
+	SK_U32			i;
+	SK_RLMT_PORT	*pRPort;
+	SK_EVPARA		Para2;
+
+	SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+		("SK_RLMT_LINK_UP Port %d Event BEGIN.\n", Para.Para32[0]))
+
+	pRPort = &pAC->Rlmt.Port[Para.Para32[0]];
+	if (!pRPort->PortStarted) {
+		SK_ERR_LOG(pAC, SK_ERRCL_SW, SKERR_RLMT_E008, SKERR_RLMT_E008_MSG);
+
+		SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+				("SK_RLMT_LINK_UP Event EMPTY.\n"))
+		return;
+	}
+
+	if (!pRPort->LinkDown) {
+		/* RA;:;: Any better solution? */
+		SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+			("SK_RLMT_LINK_UP Event EMPTY.\n"))
+		return;
+	}
+
+	SkTimerStop(pAC, IoC, &pRPort->UpTimer);
+	SkTimerStop(pAC, IoC, &pRPort->DownRxTimer);
+	SkTimerStop(pAC, IoC, &pRPort->DownTxTimer);
+
+	/* Do something if timer already fired? */
+
+	pRPort->LinkDown = SK_FALSE;
+	pRPort->PortState = SK_RLMT_PS_GOING_UP;
+	pRPort->GuTimeStamp = SkOsGetTime(pAC);
+	pRPort->BcTimeStamp = 0;
+	pRPort->Net->LinksUp++;
+	if (pRPort->Net->LinksUp == 1) {
+		SK_HWAC_LINK_LED(pAC, IoC, Para.Para32[0], SK_LED_ACTIVE);
+	}
+	else {
+		SK_HWAC_LINK_LED(pAC, IoC, Para.Para32[0], SK_LED_STANDBY);
+	}
+
+	for (i = 0; i < pRPort->Net->NumPorts; i++) {
+		if (!pRPort->Net->Port[i]->PortStarted) {
+			SkRlmtPortStart(pAC, IoC, pRPort->Net->Port[i]->PortNumber);
+		}
+	}
+
+	SkRlmtCheckSwitch(pAC, IoC, pRPort->Net->NetNumber);
+
+	if (pRPort->Net->LinksUp >= 2) {
+		if (pRPort->Net->RlmtMode & SK_RLMT_CHECK_LOC_LINK) {
+			/* Build the check chain. */
+			SkRlmtBuildCheckChain(pAC, pRPort->Net->NetNumber);
+		}
+	}
+
+	/* If the first link comes up, start the periodical RLMT timeout. */
+	if (pRPort->Net->NumPorts > 1 && pRPort->Net->LinksUp == 1 &&
+		(pRPort->Net->RlmtMode & SK_RLMT_CHECK_OTHERS) != 0) {
+		Para2.Para32[0] = pRPort->Net->NetNumber;
+		Para2.Para32[1] = (SK_U32)-1;
+		SkTimerStart(pAC, IoC, &pRPort->Net->LocTimer,
+			pRPort->Net->TimeoutValue, SKGE_RLMT, SK_RLMT_TIM, Para2);
+	}
+
+	Para2 = Para;
+	Para2.Para32[1] = (SK_U32)-1;
+	SkTimerStart(pAC, IoC, &pRPort->UpTimer, SK_RLMT_PORTUP_TIM_VAL,
+		SKGE_RLMT, SK_RLMT_PORTUP_TIM, Para2);
+	
+	/* Later: if (pAC->Rlmt.RlmtMode & SK_RLMT_CHECK_LOC_LINK) && */
+	if ((pRPort->Net->RlmtMode & SK_RLMT_TRANSPARENT) == 0 &&
+		(pRPort->Net->RlmtMode & SK_RLMT_CHECK_LINK) != 0 &&
+		(Para2.pParaPtr =
+			SkRlmtBuildPacket(pAC, IoC, Para.Para32[0], SK_PACKET_ANNOUNCE,
+			&pAC->Addr.Port[Para.Para32[0]].CurrentMacAddress, &SkRlmtMcAddr)
+		) != NULL) {
+		/* Send "new" packet to RLMT multicast address. */
+		SkEventQueue(pAC, SKGE_DRV, SK_DRV_RLMT_SEND, Para2);
+	}
+
+	if (pRPort->Net->RlmtMode & SK_RLMT_CHECK_SEG) {
+		if ((Para2.pParaPtr =
+			SkRlmtBuildSpanningTreePacket(pAC, IoC, Para.Para32[0])) != NULL) {
+			pAC->Rlmt.Port[Para.Para32[0]].RootIdSet = SK_FALSE;
+			pRPort->Net->CheckingState |=
+				SK_RLMT_RCS_SEG | SK_RLMT_RCS_REPORT_SEG;
+
+			SkEventQueue(pAC, SKGE_DRV, SK_DRV_RLMT_SEND, Para2);
+
+			Para.Para32[1] = (SK_U32)-1;
+			SkTimerStart(pAC, IoC, &pRPort->Net->SegTimer,
+				SK_RLMT_SEG_TO_VAL, SKGE_RLMT, SK_RLMT_SEG_TIM, Para);
+		}
+	}
+
+	SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+		("SK_RLMT_LINK_UP Event END.\n"))
+}	/* SkRlmtEvtLinkUp */
+
+
+/******************************************************************************
+ *
+ *	SkRlmtEvtPortUpTim - PORT_UP_TIM
+ *
+ * Description:
+ *	This routine handles PORT_UP_TIM events.
+ *
+ * Context:
+ *	runtime, pageable?
+ *	may be called after SK_INIT_IO
+ *
+ * Returns:
+ *	Nothing
+ */
+RLMT_STATIC void	SkRlmtEvtPortUpTim(
+SK_AC		*pAC,	/* Adapter Context */
+SK_IOC		IoC,	/* I/O Context */
+SK_EVPARA	Para)	/* SK_U32 PortNumber; SK_U32 -1 */
+{
+	SK_RLMT_PORT	*pRPort;
+
+	SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+		("SK_RLMT_PORTUP_TIM Port %d Event BEGIN.\n", Para.Para32[0]))
+
+	if (Para.Para32[1] != (SK_U32)-1) {
+		SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+			("Bad Parameter.\n"))
+		SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+			("SK_RLMT_PORTUP_TIM Event EMPTY.\n"))
+		return;
+	}
+
+	pRPort = &pAC->Rlmt.Port[Para.Para32[0]];
+	if (pRPort->LinkDown || (pRPort->PortState == SK_RLMT_PS_UP)) {
+		SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+			("SK_RLMT_PORTUP_TIM Port %d Event EMPTY.\n", Para.Para32[0]))
+		return;
+	}
+
+	pRPort->PortDown = SK_FALSE;
+	pRPort->PortState = SK_RLMT_PS_UP;
+	pRPort->Net->PortsUp++;
+	if (pRPort->Net->RlmtState != SK_RLMT_RS_INIT) {
+		if (pAC->Rlmt.NumNets <= 1) {
+			SkRlmtCheckSwitch(pAC, IoC, pRPort->Net->NetNumber);
+		}
+		SkEventQueue(pAC, SKGE_PNMI, SK_PNMI_EVT_RLMT_PORT_UP, Para);
+	}
+
+	SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+		("SK_RLMT_PORTUP_TIM Event END.\n"))
+}	/* SkRlmtEvtPortUpTim */
+
+
+/******************************************************************************
+ *
+ *	SkRlmtEvtPortDownTim - PORT_DOWN_*
+ *
+ * Description:
+ *	This routine handles PORT_DOWN_* events.
+ *
+ * Context:
+ *	runtime, pageable?
+ *	may be called after SK_INIT_IO
+ *
+ * Returns:
+ *	Nothing
+ */
+RLMT_STATIC void	SkRlmtEvtPortDownX(
+SK_AC		*pAC,	/* Adapter Context */
+SK_IOC		IoC,	/* I/O Context */
+SK_U32		Event,	/* Event code */
+SK_EVPARA	Para)	/* SK_U32 PortNumber; SK_U32 -1 */
+{
+	SK_RLMT_PORT	*pRPort;
+
+	SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+		("SK_RLMT_PORTDOWN* Port %d Event (%d) BEGIN.\n",
+			Para.Para32[0], Event))
+
+	if (Para.Para32[1] != (SK_U32)-1) {
+		SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+			("Bad Parameter.\n"))
+		SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+			("SK_RLMT_PORTDOWN* Event EMPTY.\n"))
+		return;
+	}
+
+	pRPort = &pAC->Rlmt.Port[Para.Para32[0]];
+	if (!pRPort->PortStarted || (Event == SK_RLMT_PORTDOWN_TX_TIM &&
+		!(pRPort->CheckingState & SK_RLMT_PCS_TX))) {
+		SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+			("SK_RLMT_PORTDOWN* Event (%d) EMPTY.\n", Event))
+		return;
+	}
+	
+	/* Stop port's timers. */
+	SkTimerStop(pAC, IoC, &pRPort->UpTimer);
+	SkTimerStop(pAC, IoC, &pRPort->DownRxTimer);
+	SkTimerStop(pAC, IoC, &pRPort->DownTxTimer);
+
+	if (pRPort->PortState != SK_RLMT_PS_LINK_DOWN) {
+		pRPort->PortState = SK_RLMT_PS_DOWN;
+	}
+
+	if (!pRPort->PortDown) {
+		pRPort->Net->PortsUp--;
+		pRPort->PortDown = SK_TRUE;
+		SkEventQueue(pAC, SKGE_PNMI, SK_PNMI_EVT_RLMT_PORT_DOWN, Para);
+	}
+
+	pRPort->PacketsPerTimeSlot = 0;
+	/* pRPort->DataPacketsPerTimeSlot = 0; */
+	pRPort->BpduPacketsPerTimeSlot = 0;
+	pRPort->BcTimeStamp = 0;
+
+	/*
+	 * RA;:;: To be checked:
+	 * - actions at RLMT_STOP: We should not switch anymore.
+	 */
+	if (pRPort->Net->RlmtState != SK_RLMT_RS_INIT) {
+		if (Para.Para32[0] ==
+			pRPort->Net->Port[pRPort->Net->ActivePort]->PortNumber) {
+			/* Active Port went down. */
+			SkRlmtCheckSwitch(pAC, IoC, pRPort->Net->NetNumber);
+		}
+	}
+
+	SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+		("SK_RLMT_PORTDOWN* Event (%d) END.\n", Event))
+}	/* SkRlmtEvtPortDownX */
+
+
+/******************************************************************************
+ *
+ *	SkRlmtEvtLinkDown - LINK_DOWN
+ *
+ * Description:
+ *	This routine handles LINK_DOWN events.
+ *
+ * Context:
+ *	runtime, pageable?
+ *	may be called after SK_INIT_IO
+ *
+ * Returns:
+ *	Nothing
+ */
+RLMT_STATIC void	SkRlmtEvtLinkDown(
+SK_AC		*pAC,	/* Adapter Context */
+SK_IOC		IoC,	/* I/O Context */
+SK_EVPARA	Para)	/* SK_U32 PortNumber; SK_U32 Undefined */
+{
+	SK_RLMT_PORT	*pRPort;
+
+	pRPort = &pAC->Rlmt.Port[Para.Para32[0]];
+	SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+		("SK_RLMT_LINK_DOWN Port %d Event BEGIN.\n", Para.Para32[0]))
+
+	if (!pAC->Rlmt.Port[Para.Para32[0]].LinkDown) {
+		pRPort->Net->LinksUp--;
+		pRPort->LinkDown = SK_TRUE;
+		pRPort->PortState = SK_RLMT_PS_LINK_DOWN;
+		SK_HWAC_LINK_LED(pAC, IoC, Para.Para32[0], SK_LED_OFF);
+
+		if ((pRPort->Net->RlmtMode & SK_RLMT_CHECK_LOC_LINK) != 0) {
+			/* Build the check chain. */
+			SkRlmtBuildCheckChain(pAC, pRPort->Net->NetNumber);
+		}
+
+		/* Ensure that port is marked down. */
+		Para.Para32[1] = -1;
+		(void)SkRlmtEvent(pAC, IoC, SK_RLMT_PORTDOWN, Para);
+	}
+
+	SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+		("SK_RLMT_LINK_DOWN Event END.\n"))
+}	/* SkRlmtEvtLinkDown */
+
+
+/******************************************************************************
+ *
+ *	SkRlmtEvtPortAddr - PORT_ADDR
+ *
+ * Description:
+ *	This routine handles PORT_ADDR events.
+ *
+ * Context:
+ *	runtime, pageable?
+ *	may be called after SK_INIT_IO
+ *
+ * Returns:
+ *	Nothing
+ */
+RLMT_STATIC void	SkRlmtEvtPortAddr(
+SK_AC		*pAC,	/* Adapter Context */
+SK_IOC		IoC,	/* I/O Context */
+SK_EVPARA	Para)	/* SK_U32 PortNumber; SK_U32 -1 */
+{
+	SK_U32			i, j;
+	SK_RLMT_PORT	*pRPort;
+	SK_MAC_ADDR		*pOldMacAddr;
+	SK_MAC_ADDR		*pNewMacAddr;
+
+	SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+		("SK_RLMT_PORT_ADDR Port %d Event BEGIN.\n", Para.Para32[0]))
+
+	if (Para.Para32[1] != (SK_U32)-1) {
+		SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+			("Bad Parameter.\n"))
+		SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+			("SK_RLMT_PORT_ADDR Event EMPTY.\n"))
+		return;
+	}
+
+	/* Port's physical MAC address changed. */
+	pOldMacAddr = &pAC->Addr.Port[Para.Para32[0]].PreviousMacAddress;
+	pNewMacAddr = &pAC->Addr.Port[Para.Para32[0]].CurrentMacAddress;
+
+	/*
+	 * NOTE: This is not scalable for solutions where ports are
+	 *	 checked remotely.  There, we need to send an RLMT
+	 *	 address change packet - and how do we ensure delivery?
+	 */
+	for (i = 0; i < (SK_U32)pAC->GIni.GIMacsFound; i++) {
+		pRPort = &pAC->Rlmt.Port[i];
+		for (j = 0; j < pRPort->PortsChecked; j++) {
+			if (SK_ADDR_EQUAL(
+				pRPort->PortCheck[j].CheckAddr.a, pOldMacAddr->a)) {
+				pRPort->PortCheck[j].CheckAddr = *pNewMacAddr;
+			}
+		}
+	}
+
+	SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+			("SK_RLMT_PORT_ADDR Event END.\n"))
+}	/* SkRlmtEvtPortAddr */
+
+
+/******************************************************************************
+ *
+ *	SkRlmtEvtStart - START
+ *
+ * Description:
+ *	This routine handles START events.
+ *
+ * Context:
+ *	runtime, pageable?
+ *	may be called after SK_INIT_IO
+ *
+ * Returns:
+ *	Nothing
+ */
+RLMT_STATIC void	SkRlmtEvtStart(
+SK_AC		*pAC,	/* Adapter Context */
+SK_IOC		IoC,	/* I/O Context */
+SK_EVPARA	Para)	/* SK_U32 NetNumber; SK_U32 -1 */
+{
+	SK_EVPARA	Para2;
+	SK_U32		PortIdx;
+	SK_U32		PortNumber;
+
+	SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+		("SK_RLMT_START Net %d Event BEGIN.\n", Para.Para32[0]))
+
+	if (Para.Para32[1] != (SK_U32)-1) {
+		SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+			("Bad Parameter.\n"))
+		SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+			("SK_RLMT_START Event EMPTY.\n"))
+		return;
+	}
+
+	if (Para.Para32[0] >= pAC->Rlmt.NumNets) {
+		SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+			("Bad NetNumber %d.\n", Para.Para32[0]))
+		SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+			("SK_RLMT_START Event EMPTY.\n"))
+		return;
+	}
+
+	if (pAC->Rlmt.Net[Para.Para32[0]].RlmtState != SK_RLMT_RS_INIT) {
+		SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+			("SK_RLMT_START Event EMPTY.\n"))
+		return;
+	}
+
+	if (pAC->Rlmt.NetsStarted >= pAC->Rlmt.NumNets) {
+		SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+			("All nets should have been started.\n"))
+		SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+			("SK_RLMT_START Event EMPTY.\n"))
+		return;
+	}
+
+	if (pAC->Rlmt.Net[Para.Para32[0]].PrefPort >=
+		pAC->Rlmt.Net[Para.Para32[0]].NumPorts) {
+		SK_ERR_LOG(pAC, SK_ERRCL_SW, SKERR_RLMT_E009, SKERR_RLMT_E009_MSG);
+
+		/* Change PrefPort to internal default. */
+		Para2.Para32[0] = 0xFFFFFFFF;
+		Para2.Para32[1] = Para.Para32[0];
+		(void)SkRlmtEvent(pAC, IoC, SK_RLMT_PREFPORT_CHANGE, Para2);
+	}
+
+	PortIdx = pAC->Rlmt.Net[Para.Para32[0]].PrefPort;
+	PortNumber = pAC->Rlmt.Net[Para.Para32[0]].Port[PortIdx]->PortNumber;
+
+	pAC->Rlmt.Net[Para.Para32[0]].LinksUp = 0;
+	pAC->Rlmt.Net[Para.Para32[0]].PortsUp = 0;
+	pAC->Rlmt.Net[Para.Para32[0]].CheckingState = 0;
+	pAC->Rlmt.Net[Para.Para32[0]].RlmtState = SK_RLMT_RS_NET_DOWN;
+
+	/* Start preferred port. */
+	SkRlmtPortStart(pAC, IoC, PortNumber);
+
+	/* Start Timer (for first port only). */
+	Para2.Para32[0] = PortNumber;
+	Para2.Para32[1] = (SK_U32)-1;
+	SkTimerStart(pAC, IoC, &pAC->Rlmt.Port[PortNumber].UpTimer,
+		SK_RLMT_PORTSTART_TIM_VAL, SKGE_RLMT, SK_RLMT_PORTSTART_TIM, Para2);
+
+	pAC->Rlmt.NetsStarted++;
+
+	SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+			("SK_RLMT_START Event END.\n"))
+}	/* SkRlmtEvtStart */
+
+
+/******************************************************************************
+ *
+ *	SkRlmtEvtStop - STOP
+ *
+ * Description:
+ *	This routine handles STOP events.
+ *
+ * Context:
+ *	runtime, pageable?
+ *	may be called after SK_INIT_IO
+ *
+ * Returns:
+ *	Nothing
+ */
+RLMT_STATIC void	SkRlmtEvtStop(
+SK_AC		*pAC,	/* Adapter Context */
+SK_IOC		IoC,	/* I/O Context */
+SK_EVPARA	Para)	/* SK_U32 NetNumber; SK_U32 -1 */
+{
+	SK_EVPARA	Para2;
+	SK_U32		PortNumber;
+	SK_U32		i;
+
+	SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+		("SK_RLMT_STOP Net %d Event BEGIN.\n", Para.Para32[0]))
+
+	if (Para.Para32[1] != (SK_U32)-1) {
+		SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+			("Bad Parameter.\n"))
+		SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+			("SK_RLMT_STOP Event EMPTY.\n"))
+		return;
+	}
+
+	if (Para.Para32[0] >= pAC->Rlmt.NumNets) {
+		SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+			("Bad NetNumber %d.\n", Para.Para32[0]))
+		SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+			("SK_RLMT_STOP Event EMPTY.\n"))
+		return;
+	}
+
+	if (pAC->Rlmt.Net[Para.Para32[0]].RlmtState == SK_RLMT_RS_INIT) {
+		SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+			("SK_RLMT_STOP Event EMPTY.\n"))
+		return;
+	}
+
+	if (pAC->Rlmt.NetsStarted == 0) {
+		SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+			("All nets are stopped.\n"))
+		SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+			("SK_RLMT_STOP Event EMPTY.\n"))
+		return;
+	}
+
+	/* Stop RLMT timers. */
+	SkTimerStop(pAC, IoC, &pAC->Rlmt.Net[Para.Para32[0]].LocTimer);
+	SkTimerStop(pAC, IoC, &pAC->Rlmt.Net[Para.Para32[0]].SegTimer);
+
+	/* Stop net. */
+	pAC->Rlmt.Net[Para.Para32[0]].RlmtState = SK_RLMT_RS_INIT;
+	pAC->Rlmt.Net[Para.Para32[0]].RootIdSet = SK_FALSE;
+	Para2.Para32[0] = SK_RLMT_NET_DOWN_FINAL;
+	Para2.Para32[1] = Para.Para32[0];			/* Net# */
+	SkEventQueue(pAC, SKGE_DRV, SK_DRV_NET_DOWN, Para2);
+
+	/* Stop ports. */
+	for (i = 0; i < pAC->Rlmt.Net[Para.Para32[0]].NumPorts; i++) {
+		PortNumber = pAC->Rlmt.Net[Para.Para32[0]].Port[i]->PortNumber;
+		if (pAC->Rlmt.Port[PortNumber].PortState != SK_RLMT_PS_INIT) {
+			SkTimerStop(pAC, IoC, &pAC->Rlmt.Port[PortNumber].UpTimer);
+			SkTimerStop(pAC, IoC, &pAC->Rlmt.Port[PortNumber].DownRxTimer);
+			SkTimerStop(pAC, IoC, &pAC->Rlmt.Port[PortNumber].DownTxTimer);
+
+			pAC->Rlmt.Port[PortNumber].PortState = SK_RLMT_PS_INIT;
+			pAC->Rlmt.Port[PortNumber].RootIdSet = SK_FALSE;
+			pAC->Rlmt.Port[PortNumber].PortStarted = SK_FALSE;
+			Para2.Para32[0] = PortNumber;
+			Para2.Para32[1] = (SK_U32)-1;
+			SkEventQueue(pAC, SKGE_HWAC, SK_HWEV_PORT_STOP, Para2);
+		}
+	}
+
+	pAC->Rlmt.NetsStarted--;
+
+	SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+		("SK_RLMT_STOP Event END.\n"))
+}	/* SkRlmtEvtStop */
+
+
+/******************************************************************************
+ *
+ *	SkRlmtEvtTim - TIM
+ *
+ * Description:
+ *	This routine handles TIM events.
+ *
+ * Context:
+ *	runtime, pageable?
+ *	may be called after SK_INIT_IO
+ *
+ * Returns:
+ *	Nothing
+ */
+RLMT_STATIC void	SkRlmtEvtTim(
+SK_AC		*pAC,	/* Adapter Context */
+SK_IOC		IoC,	/* I/O Context */
+SK_EVPARA	Para)	/* SK_U32 NetNumber; SK_U32 -1 */
+{
+	SK_RLMT_PORT	*pRPort;
+	SK_U32			Timeout;
+	SK_U32			NewTimeout;
+	SK_U32			PortNumber;
+	SK_U32			i;
+
+	SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+		("SK_RLMT_TIM Event BEGIN.\n"))
+
+	if (Para.Para32[1] != (SK_U32)-1) {
+		SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+			("Bad Parameter.\n"))
+		SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+			("SK_RLMT_TIM Event EMPTY.\n"))
+		return;
+	}
+
+	if ((pAC->Rlmt.Net[Para.Para32[0]].RlmtMode & SK_RLMT_CHECK_OTHERS) == 0 ||
+		pAC->Rlmt.Net[Para.Para32[0]].LinksUp == 0) {
+		/* Mode changed or all links down: No more link checking. */
+		return;
+	}
+
+#if 0
+	pAC->Rlmt.SwitchCheckCounter--;
+	if (pAC->Rlmt.SwitchCheckCounter == 0) {
+		pAC->Rlmt.SwitchCheckCounter;
+	}
+#endif	/* 0 */
+
+	NewTimeout = SK_RLMT_DEF_TO_VAL;
+	for (i = 0; i < pAC->Rlmt.Net[Para.Para32[0]].NumPorts; i++) {
+		PortNumber = pAC->Rlmt.Net[Para.Para32[0]].Port[i]->PortNumber;
+		pRPort = &pAC->Rlmt.Port[PortNumber];
+		if (!pRPort->LinkDown) {
+			Timeout = SkRlmtCheckPort(pAC, IoC, PortNumber);
+			if (Timeout < NewTimeout) {
+				NewTimeout = Timeout;
+			}
+
+			/*
+			 * These counters should be set to 0 for all ports before the
+			 * first frame is sent in the next loop.
+			 */
+			pRPort->PacketsPerTimeSlot = 0;
+			/* pRPort->DataPacketsPerTimeSlot = 0; */
+			pRPort->BpduPacketsPerTimeSlot = 0;
+		}
+	}
+	pAC->Rlmt.Net[Para.Para32[0]].TimeoutValue = NewTimeout;
+
+	if (pAC->Rlmt.Net[Para.Para32[0]].LinksUp > 1) {
+		/*
+		 * If checking remote ports, also send packets if
+		 *   (LinksUp == 1) &&
+		 *   this port checks at least one (remote) port.
+		 */
+
+		/*
+		 * Must be new loop, as SkRlmtCheckPort can request to
+		 * check segmentation when e.g. checking the last port.
+		 */
+		for (i = 0; i < pAC->Rlmt.Net[Para.Para32[0]].NumPorts; i++) {
+			if (!pAC->Rlmt.Net[Para.Para32[0]].Port[i]->LinkDown) {
+				SkRlmtSend(pAC, IoC,
+					pAC->Rlmt.Net[Para.Para32[0]].Port[i]->PortNumber);
+			}
+		}
+	}
+
+	SkTimerStart(pAC, IoC, &pAC->Rlmt.Net[Para.Para32[0]].LocTimer,
+		pAC->Rlmt.Net[Para.Para32[0]].TimeoutValue, SKGE_RLMT, SK_RLMT_TIM,
+		Para);
+
+	if (pAC->Rlmt.Net[Para.Para32[0]].LinksUp > 1 &&
+		(pAC->Rlmt.Net[Para.Para32[0]].RlmtMode & SK_RLMT_CHECK_SEG) &&
+		(pAC->Rlmt.Net[Para.Para32[0]].CheckingState & SK_RLMT_RCS_START_SEG)) {
+		SkTimerStart(pAC, IoC, &pAC->Rlmt.Net[Para.Para32[0]].SegTimer,
+			SK_RLMT_SEG_TO_VAL, SKGE_RLMT, SK_RLMT_SEG_TIM, Para);
+		pAC->Rlmt.Net[Para.Para32[0]].CheckingState &= ~SK_RLMT_RCS_START_SEG;
+		pAC->Rlmt.Net[Para.Para32[0]].CheckingState |=
+			SK_RLMT_RCS_SEG | SK_RLMT_RCS_REPORT_SEG;
+	}
+
+	SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+			("SK_RLMT_TIM Event END.\n"))
+}	/* SkRlmtEvtTim */
+
+
+/******************************************************************************
+ *
+ *	SkRlmtEvtSegTim - SEG_TIM
+ *
+ * Description:
+ *	This routine handles SEG_TIM events.
+ *
+ * Context:
+ *	runtime, pageable?
+ *	may be called after SK_INIT_IO
+ *
+ * Returns:
+ *	Nothing
+ */
+RLMT_STATIC void	SkRlmtEvtSegTim(
+SK_AC		*pAC,	/* Adapter Context */
+SK_IOC		IoC,	/* I/O Context */
+SK_EVPARA	Para)	/* SK_U32 NetNumber; SK_U32 -1 */
+{
+#ifdef xDEBUG
+	int j;
+#endif	/* DEBUG */
+
+	SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+		("SK_RLMT_SEG_TIM Event BEGIN.\n"))
+
+	if (Para.Para32[1] != (SK_U32)-1) {
+		SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+			("Bad Parameter.\n"))
+		SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+			("SK_RLMT_SEG_TIM Event EMPTY.\n"))
+		return;
+	}
+
+#ifdef xDEBUG
+	for (j = 0; j < pAC->Rlmt.Net[Para.Para32[0]].NumPorts; j++) {
+		SK_ADDR_PORT	*pAPort;
+		SK_U32			k;
+		SK_U16			*InAddr;
+		SK_U8			InAddr8[6];
+
+		InAddr = (SK_U16 *)&InAddr8[0];
+		pAPort = pAC->Rlmt.Net[Para.Para32[0]].Port[j]->AddrPort;
+		for (k = 0; k < pAPort->NextExactMatchRlmt; k++) {
+			/* Get exact match address k from port j. */
+			XM_INADDR(IoC, pAC->Rlmt.Net[Para.Para32[0]].Port[j]->PortNumber,
+				XM_EXM(k), InAddr);
+			SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+				("MC address %d on Port %u: %02x %02x %02x %02x %02x %02x --  %02x %02x %02x %02x %02x %02x.\n",
+					k, pAC->Rlmt.Net[Para.Para32[0]].Port[j]->PortNumber,
+					InAddr8[0], InAddr8[1], InAddr8[2],
+					InAddr8[3], InAddr8[4], InAddr8[5],
+					pAPort->Exact[k].a[0], pAPort->Exact[k].a[1],
+					pAPort->Exact[k].a[2], pAPort->Exact[k].a[3],
+					pAPort->Exact[k].a[4], pAPort->Exact[k].a[5]))
+		}
+	}
+#endif	/* xDEBUG */
+				
+	SkRlmtCheckSeg(pAC, IoC, Para.Para32[0]);
+
+	SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+			("SK_RLMT_SEG_TIM Event END.\n"))
+}	/* SkRlmtEvtSegTim */
+
+
+/******************************************************************************
+ *
+ *	SkRlmtEvtPacketRx - PACKET_RECEIVED
+ *
+ * Description:
+ *	This routine handles PACKET_RECEIVED events.
+ *
+ * Context:
+ *	runtime, pageable?
+ *	may be called after SK_INIT_IO
+ *
+ * Returns:
+ *	Nothing
+ */
+RLMT_STATIC void	SkRlmtEvtPacketRx(
+SK_AC		*pAC,	/* Adapter Context */
+SK_IOC		IoC,	/* I/O Context */
+SK_EVPARA	Para)	/* SK_MBUF *pMb */
+{
+	SK_MBUF	*pMb;
+	SK_MBUF	*pNextMb;
+	SK_U32	NetNumber;
+
+	
+	SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+		("SK_RLMT_PACKET_RECEIVED Event BEGIN.\n"))
+
+	/* Should we ignore frames during port switching? */
+
+#ifdef DEBUG
+	pMb = Para.pParaPtr;
+	if (pMb == NULL) {
+		SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL, ("No mbuf.\n"))
+	}
+	else if (pMb->pNext != NULL) {
+		SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+			("More than one mbuf or pMb->pNext not set.\n"))
+	}
+#endif	/* DEBUG */
+
+	for (pMb = Para.pParaPtr; pMb != NULL; pMb = pNextMb) {
+		pNextMb = pMb->pNext;
+		pMb->pNext = NULL;
+
+		NetNumber = pAC->Rlmt.Port[pMb->PortIdx].Net->NetNumber;
+		if (pAC->Rlmt.Net[NetNumber].RlmtState == SK_RLMT_RS_INIT) {
+			SkDrvFreeRlmtMbuf(pAC, IoC, pMb);
+		}
+		else {
+			SkRlmtPacketReceive(pAC, IoC, pMb);
+		}
+	}
+
+	SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+		("SK_RLMT_PACKET_RECEIVED Event END.\n"))
+}	/* SkRlmtEvtPacketRx */
+
+
+/******************************************************************************
+ *
+ *	SkRlmtEvtStatsClear - STATS_CLEAR
+ *
+ * Description:
+ *	This routine handles STATS_CLEAR events.
+ *
+ * Context:
+ *	runtime, pageable?
+ *	may be called after SK_INIT_IO
+ *
+ * Returns:
+ *	Nothing
+ */
+RLMT_STATIC void	SkRlmtEvtStatsClear(
+SK_AC		*pAC,	/* Adapter Context */
+SK_IOC		IoC,	/* I/O Context */
+SK_EVPARA	Para)	/* SK_U32 NetNumber; SK_U32 -1 */
+{
+	SK_U32			i;
+	SK_RLMT_PORT	*pRPort;
+
+	SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+		("SK_RLMT_STATS_CLEAR Event BEGIN.\n"))
+
+	if (Para.Para32[1] != (SK_U32)-1) {
+		SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+			("Bad Parameter.\n"))
+		SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+			("SK_RLMT_STATS_CLEAR Event EMPTY.\n"))
+		return;
+	}
+
+	if (Para.Para32[0] >= pAC->Rlmt.NumNets) {
+		SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+			("Bad NetNumber %d.\n", Para.Para32[0]))
+		SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+			("SK_RLMT_STATS_CLEAR Event EMPTY.\n"))
+		return;
+	}
+
+	/* Clear statistics for logical and physical ports. */
+	for (i = 0; i < pAC->Rlmt.Net[Para.Para32[0]].NumPorts; i++) {
+		pRPort =
+			&pAC->Rlmt.Port[pAC->Rlmt.Net[Para.Para32[0]].Port[i]->PortNumber];
+		pRPort->TxHelloCts = 0;
+		pRPort->RxHelloCts = 0;
+		pRPort->TxSpHelloReqCts = 0;
+		pRPort->RxSpHelloCts = 0;
+	}
+
+	SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+		("SK_RLMT_STATS_CLEAR Event END.\n"))
+}	/* SkRlmtEvtStatsClear */
+
+
+/******************************************************************************
+ *
+ *	SkRlmtEvtStatsUpdate - STATS_UPDATE
+ *
+ * Description:
+ *	This routine handles STATS_UPDATE events.
+ *
+ * Context:
+ *	runtime, pageable?
+ *	may be called after SK_INIT_IO
+ *
+ * Returns:
+ *	Nothing
+ */
+RLMT_STATIC void	SkRlmtEvtStatsUpdate(
+SK_AC		*pAC,	/* Adapter Context */
+SK_IOC		IoC,	/* I/O Context */
+SK_EVPARA	Para)	/* SK_U32 NetNumber; SK_U32 -1 */
+{
+	SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+		("SK_RLMT_STATS_UPDATE Event BEGIN.\n"))
+
+	if (Para.Para32[1] != (SK_U32)-1) {
+		SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+			("Bad Parameter.\n"))
+		SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+			("SK_RLMT_STATS_UPDATE Event EMPTY.\n"))
+		return;
+	}
+
+	if (Para.Para32[0] >= pAC->Rlmt.NumNets) {
+		SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+			("Bad NetNumber %d.\n", Para.Para32[0]))
+		SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+			("SK_RLMT_STATS_UPDATE Event EMPTY.\n"))
+		return;
+	}
+
+	/* Update statistics - currently always up-to-date. */
+
+	SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+		("SK_RLMT_STATS_UPDATE Event END.\n"))
+}	/* SkRlmtEvtStatsUpdate */
+
+
+/******************************************************************************
+ *
+ *	SkRlmtEvtPrefportChange - PREFPORT_CHANGE
+ *
+ * Description:
+ *	This routine handles PREFPORT_CHANGE events.
+ *
+ * Context:
+ *	runtime, pageable?
+ *	may be called after SK_INIT_IO
+ *
+ * Returns:
+ *	Nothing
+ */
+RLMT_STATIC void	SkRlmtEvtPrefportChange(
+SK_AC		*pAC,	/* Adapter Context */
+SK_IOC		IoC,	/* I/O Context */
+SK_EVPARA	Para)	/* SK_U32 PortIndex; SK_U32 NetNumber */
+{
+	SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+		("SK_RLMT_PREFPORT_CHANGE to Port %d Event BEGIN.\n", Para.Para32[0]))
+
+	if (Para.Para32[1] >= pAC->Rlmt.NumNets) {
+		SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+			("Bad NetNumber %d.\n", Para.Para32[1]))
+		SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+			("SK_RLMT_PREFPORT_CHANGE Event EMPTY.\n"))
+		return;
+	}
+
+	/* 0xFFFFFFFF == auto-mode. */
+	if (Para.Para32[0] == 0xFFFFFFFF) {
+		pAC->Rlmt.Net[Para.Para32[1]].PrefPort = SK_RLMT_DEF_PREF_PORT;
+	}
+	else {
+		if (Para.Para32[0] >= pAC->Rlmt.Net[Para.Para32[1]].NumPorts) {
+			SK_ERR_LOG(pAC, SK_ERRCL_SW, SKERR_RLMT_E010, SKERR_RLMT_E010_MSG);
+
+			SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+				("SK_RLMT_PREFPORT_CHANGE Event EMPTY.\n"))
+			return;
+		}
+
+		pAC->Rlmt.Net[Para.Para32[1]].PrefPort = Para.Para32[0];
+	}
+
+	pAC->Rlmt.Net[Para.Para32[1]].Preference = Para.Para32[0];
+
+	if (pAC->Rlmt.Net[Para.Para32[1]].RlmtState != SK_RLMT_RS_INIT) {
+		SkRlmtCheckSwitch(pAC, IoC, Para.Para32[1]);
+	}
+
+	SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+		("SK_RLMT_PREFPORT_CHANGE Event END.\n"))
+}	/* SkRlmtEvtPrefportChange */
+
+
+/******************************************************************************
+ *
+ *	SkRlmtEvtSetNets - SET_NETS
+ *
+ * Description:
+ *	This routine handles SET_NETS events.
+ *
+ * Context:
+ *	runtime, pageable?
+ *	may be called after SK_INIT_IO
+ *
+ * Returns:
+ *	Nothing
+ */
+RLMT_STATIC void	SkRlmtEvtSetNets(
+SK_AC		*pAC,	/* Adapter Context */
+SK_IOC		IoC,	/* I/O Context */
+SK_EVPARA	Para)	/* SK_U32 NumNets; SK_U32 -1 */
+{
+	int i;
+
+	SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+		("SK_RLMT_SET_NETS Event BEGIN.\n"))
+
+	if (Para.Para32[1] != (SK_U32)-1) {
+		SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+			("Bad Parameter.\n"))
+		SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+			("SK_RLMT_SET_NETS Event EMPTY.\n"))
+		return;
+	}
+
+	if (Para.Para32[0] == 0 || Para.Para32[0] > SK_MAX_NETS ||
+		Para.Para32[0] > (SK_U32)pAC->GIni.GIMacsFound) {
+		SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+			("Bad number of nets: %d.\n", Para.Para32[0]))
+		SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+			("SK_RLMT_SET_NETS Event EMPTY.\n"))
+		return;
+	}
+
+	if (Para.Para32[0] == pAC->Rlmt.NumNets) {	/* No change. */
+		SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+			("SK_RLMT_SET_NETS Event EMPTY.\n"))
+		return;
+	}
+
+	/* Entering and leaving dual mode only allowed while nets are stopped. */
+	if (pAC->Rlmt.NetsStarted > 0) {
+		SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+			("Changing dual mode only allowed while all nets are stopped.\n"))
+		SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+			("SK_RLMT_SET_NETS Event EMPTY.\n"))
+		return;
+	}
+
+	if (Para.Para32[0] == 1) {
+		if (pAC->Rlmt.NumNets > 1) {
+			/* Clear logical MAC addr from second net's active port. */
+			(void)SkAddrOverride(pAC, IoC, pAC->Rlmt.Net[1].Port[pAC->Addr.
+				Net[1].ActivePort]->PortNumber, NULL, SK_ADDR_CLEAR_LOGICAL);
+			pAC->Rlmt.Net[1].NumPorts = 0;
+		}
+
+		pAC->Rlmt.NumNets = Para.Para32[0];
+		for (i = 0; (SK_U32)i < pAC->Rlmt.NumNets; i++) {
+			pAC->Rlmt.Net[i].RlmtState = SK_RLMT_RS_INIT;
+			pAC->Rlmt.Net[i].RootIdSet = SK_FALSE;
+			pAC->Rlmt.Net[i].Preference = 0xFFFFFFFF;	  /* "Automatic" */
+			pAC->Rlmt.Net[i].PrefPort = SK_RLMT_DEF_PREF_PORT;
+			/* Just assuming. */
+			pAC->Rlmt.Net[i].ActivePort = pAC->Rlmt.Net[i].PrefPort;
+			pAC->Rlmt.Net[i].RlmtMode = SK_RLMT_DEF_MODE;
+			pAC->Rlmt.Net[i].TimeoutValue = SK_RLMT_DEF_TO_VAL;
+			pAC->Rlmt.Net[i].NetNumber = i;
+		}
+
+		pAC->Rlmt.Port[1].Net= &pAC->Rlmt.Net[0];
+		pAC->Rlmt.Net[0].NumPorts = pAC->GIni.GIMacsFound;
+
+		SkEventQueue(pAC, SKGE_PNMI, SK_PNMI_EVT_RLMT_SET_NETS, Para);
+
+		SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+			("RLMT: Changed to one net with two ports.\n"))
+	}
+	else if (Para.Para32[0] == 2) {
+		pAC->Rlmt.Port[1].Net= &pAC->Rlmt.Net[1];
+		pAC->Rlmt.Net[1].NumPorts = pAC->GIni.GIMacsFound - 1;
+		pAC->Rlmt.Net[0].NumPorts =
+			pAC->GIni.GIMacsFound - pAC->Rlmt.Net[1].NumPorts;
+		
+		pAC->Rlmt.NumNets = Para.Para32[0];
+		for (i = 0; (SK_U32)i < pAC->Rlmt.NumNets; i++) {
+			pAC->Rlmt.Net[i].RlmtState = SK_RLMT_RS_INIT;
+			pAC->Rlmt.Net[i].RootIdSet = SK_FALSE;
+			pAC->Rlmt.Net[i].Preference = 0xFFFFFFFF;	  /* "Automatic" */
+			pAC->Rlmt.Net[i].PrefPort = SK_RLMT_DEF_PREF_PORT;
+			/* Just assuming. */
+			pAC->Rlmt.Net[i].ActivePort = pAC->Rlmt.Net[i].PrefPort;
+			pAC->Rlmt.Net[i].RlmtMode = SK_RLMT_DEF_MODE;
+			pAC->Rlmt.Net[i].TimeoutValue = SK_RLMT_DEF_TO_VAL;
+
+			pAC->Rlmt.Net[i].NetNumber = i;
+		}
+
+		/* Set logical MAC addr on second net's active port. */
+		(void)SkAddrOverride(pAC, IoC, pAC->Rlmt.Net[1].Port[pAC->Addr.
+			Net[1].ActivePort]->PortNumber, NULL, SK_ADDR_SET_LOGICAL);
+
+		SkEventQueue(pAC, SKGE_PNMI, SK_PNMI_EVT_RLMT_SET_NETS, Para);
+
+		SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+			("RLMT: Changed to two nets with one port each.\n"))
+	}
+	else {
+		/* Not implemented for more than two nets. */
+		SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+			("SetNets not implemented for more than two nets.\n"))
+		SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+			("SK_RLMT_SET_NETS Event EMPTY.\n"))
+		return;
+	}
+
+	SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+		("SK_RLMT_SET_NETS Event END.\n"))
+}	/* SkRlmtSetNets */
+
+
+/******************************************************************************
+ *
+ *	SkRlmtEvtModeChange - MODE_CHANGE
+ *
+ * Description:
+ *	This routine handles MODE_CHANGE events.
+ *
+ * Context:
+ *	runtime, pageable?
+ *	may be called after SK_INIT_IO
+ *
+ * Returns:
+ *	Nothing
+ */
+RLMT_STATIC void	SkRlmtEvtModeChange(
+SK_AC		*pAC,	/* Adapter Context */
+SK_IOC		IoC,	/* I/O Context */
+SK_EVPARA	Para)	/* SK_U32 NewMode; SK_U32 NetNumber */
+{
+	SK_EVPARA	Para2;
+	SK_U32		i;
+	SK_U32		PrevRlmtMode;
+
+	SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+		("SK_RLMT_MODE_CHANGE Event BEGIN.\n"))
+
+	if (Para.Para32[1] >= pAC->Rlmt.NumNets) {
+		SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+			("Bad NetNumber %d.\n", Para.Para32[1]))
+		SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+			("SK_RLMT_MODE_CHANGE Event EMPTY.\n"))
+		return;
+	}
+
+	Para.Para32[0] |= SK_RLMT_CHECK_LINK;
+
+	if ((pAC->Rlmt.Net[Para.Para32[1]].NumPorts == 1) &&
+		Para.Para32[0] != SK_RLMT_MODE_CLS) {
+		pAC->Rlmt.Net[Para.Para32[1]].RlmtMode = SK_RLMT_MODE_CLS;
+		SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+			("Forced RLMT mode to CLS on single port net.\n"))
+		SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+			("SK_RLMT_MODE_CHANGE Event EMPTY.\n"))
+		return;
+	}
+
+	/* Update RLMT mode. */
+	PrevRlmtMode = pAC->Rlmt.Net[Para.Para32[1]].RlmtMode;
+	pAC->Rlmt.Net[Para.Para32[1]].RlmtMode = Para.Para32[0];
+
+	if ((PrevRlmtMode & SK_RLMT_CHECK_LOC_LINK) !=
+		(pAC->Rlmt.Net[Para.Para32[1]].RlmtMode & SK_RLMT_CHECK_LOC_LINK)) {
+		/* SK_RLMT_CHECK_LOC_LINK bit changed. */
+		if ((PrevRlmtMode & SK_RLMT_CHECK_OTHERS) == 0 &&
+			pAC->Rlmt.Net[Para.Para32[1]].NumPorts > 1 &&
+			pAC->Rlmt.Net[Para.Para32[1]].PortsUp >= 1) {
+			/* 20001207 RA: Was "PortsUp == 1". */
+			Para2.Para32[0] = Para.Para32[1];
+			Para2.Para32[1] = (SK_U32)-1;
+			SkTimerStart(pAC, IoC, &pAC->Rlmt.Net[Para.Para32[1]].LocTimer,
+				pAC->Rlmt.Net[Para.Para32[1]].TimeoutValue,
+				SKGE_RLMT, SK_RLMT_TIM, Para2);
+		}
+	}
+
+	if ((PrevRlmtMode & SK_RLMT_CHECK_SEG) !=
+		(pAC->Rlmt.Net[Para.Para32[1]].RlmtMode & SK_RLMT_CHECK_SEG)) {
+		/* SK_RLMT_CHECK_SEG bit changed. */
+		for (i = 0; i < pAC->Rlmt.Net[Para.Para32[1]].NumPorts; i++) {
+			(void)SkAddrMcClear(pAC, IoC,
+				pAC->Rlmt.Net[Para.Para32[1]].Port[i]->PortNumber,
+				SK_ADDR_PERMANENT | SK_MC_SW_ONLY);
+
+			/* Add RLMT MC address. */
+			(void)SkAddrMcAdd(pAC, IoC,
+				pAC->Rlmt.Net[Para.Para32[1]].Port[i]->PortNumber,
+				&SkRlmtMcAddr, SK_ADDR_PERMANENT);
+
+			if ((pAC->Rlmt.Net[Para.Para32[1]].RlmtMode &
+				SK_RLMT_CHECK_SEG) != 0) {
+				/* Add BPDU MC address. */
+				(void)SkAddrMcAdd(pAC, IoC,
+					pAC->Rlmt.Net[Para.Para32[1]].Port[i]->PortNumber,
+					&BridgeMcAddr, SK_ADDR_PERMANENT);
+
+				if (pAC->Rlmt.Net[Para.Para32[1]].RlmtState != SK_RLMT_RS_INIT) {
+					if (!pAC->Rlmt.Net[Para.Para32[1]].Port[i]->LinkDown &&
+						(Para2.pParaPtr = SkRlmtBuildSpanningTreePacket(
+						pAC, IoC, i)) != NULL) {
+						pAC->Rlmt.Net[Para.Para32[1]].Port[i]->RootIdSet =
+							SK_FALSE;
+						SkEventQueue(pAC, SKGE_DRV, SK_DRV_RLMT_SEND, Para2);
+					}
+				}
+			}
+			(void)SkAddrMcUpdate(pAC, IoC,
+				pAC->Rlmt.Net[Para.Para32[1]].Port[i]->PortNumber);
+		}	/* for ... */
+
+		if ((pAC->Rlmt.Net[Para.Para32[1]].RlmtMode & SK_RLMT_CHECK_SEG) != 0) {
+			Para2.Para32[0] = Para.Para32[1];
+			Para2.Para32[1] = (SK_U32)-1;
+			SkTimerStart(pAC, IoC, &pAC->Rlmt.Net[Para.Para32[1]].SegTimer,
+				SK_RLMT_SEG_TO_VAL, SKGE_RLMT, SK_RLMT_SEG_TIM, Para2);
+		}
+	}	/* SK_RLMT_CHECK_SEG bit changed. */
+
+	SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+			("SK_RLMT_MODE_CHANGE Event END.\n"))
+}	/* SkRlmtEvtModeChange */
+
+
+/******************************************************************************
+ *
+ *	SkRlmtEvent - a PORT- or an RLMT-specific event happened
+ *
+ * Description:
+ *	This routine calls subroutines to handle PORT- and RLMT-specific events.
+ *
+ * Context:
+ *	runtime, pageable?
+ *	may be called after SK_INIT_IO
+ *
+ * Returns:
+ *	0
+ */
+int	SkRlmtEvent(
+SK_AC		*pAC,	/* Adapter Context */
+SK_IOC		IoC,	/* I/O Context */
+SK_U32		Event,	/* Event code */
+SK_EVPARA	Para)	/* Event-specific parameter */
+{
+	switch (Event) {
+	
+	/* ----- PORT events ----- */
+
+	case SK_RLMT_PORTSTART_TIM:	/* From RLMT via TIME. */
+		SkRlmtEvtPortStartTim(pAC, IoC, Para);
+		break;
+	case SK_RLMT_LINK_UP:		/* From SIRQ. */
+		SkRlmtEvtLinkUp(pAC, IoC, Para);
+		break;
+	case SK_RLMT_PORTUP_TIM:	/* From RLMT via TIME. */
+		SkRlmtEvtPortUpTim(pAC, IoC, Para);
+		break;
+	case SK_RLMT_PORTDOWN:			/* From RLMT. */
+	case SK_RLMT_PORTDOWN_RX_TIM:	/* From RLMT via TIME. */
+	case SK_RLMT_PORTDOWN_TX_TIM:	/* From RLMT via TIME. */
+		SkRlmtEvtPortDownX(pAC, IoC, Event, Para);
+		break;
+	case SK_RLMT_LINK_DOWN:		/* From SIRQ. */
+		SkRlmtEvtLinkDown(pAC, IoC, Para);
+		break;
+	case SK_RLMT_PORT_ADDR:		/* From ADDR. */
+		SkRlmtEvtPortAddr(pAC, IoC, Para);
+		break;
+
+	/* ----- RLMT events ----- */
+
+	case SK_RLMT_START:		/* From DRV. */
+		SkRlmtEvtStart(pAC, IoC, Para);
+		break;
+	case SK_RLMT_STOP:		/* From DRV. */
+		SkRlmtEvtStop(pAC, IoC, Para);
+		break;
+	case SK_RLMT_TIM:		/* From RLMT via TIME. */
+		SkRlmtEvtTim(pAC, IoC, Para);
+		break;
+	case SK_RLMT_SEG_TIM:
+		SkRlmtEvtSegTim(pAC, IoC, Para);
+		break;
+	case SK_RLMT_PACKET_RECEIVED:	/* From DRV. */
+		SkRlmtEvtPacketRx(pAC, IoC, Para);
+		break;
+	case SK_RLMT_STATS_CLEAR:	/* From PNMI. */
+		SkRlmtEvtStatsClear(pAC, IoC, Para);
+		break;
+	case SK_RLMT_STATS_UPDATE:	/* From PNMI. */
+		SkRlmtEvtStatsUpdate(pAC, IoC, Para);
+		break;
+	case SK_RLMT_PREFPORT_CHANGE:	/* From PNMI. */
+		SkRlmtEvtPrefportChange(pAC, IoC, Para);
+		break;
+	case SK_RLMT_MODE_CHANGE:	/* From PNMI. */
+		SkRlmtEvtModeChange(pAC, IoC, Para);
+		break;
+	case SK_RLMT_SET_NETS:	/* From DRV. */
+		SkRlmtEvtSetNets(pAC, IoC, Para);
+		break;
+
+	/* ----- Unknown events ----- */
+
+	default:	/* Create error log entry. */
+		SK_DBG_MSG(pAC, SK_DBGMOD_RLMT, SK_DBGCAT_CTRL,
+			("Unknown RLMT Event %d.\n", Event))
+		SK_ERR_LOG(pAC, SK_ERRCL_SW, SKERR_RLMT_E003, SKERR_RLMT_E003_MSG);
+		break;
+	}	/* switch() */
+
+	return (0);
+}	/* SkRlmtEvent */
+
+#ifdef __cplusplus
+}
+#endif	/* __cplusplus */