patch-2.2.14 linux/drivers/net/sk98lin/skrlmt.c

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diff -u --recursive --new-file v2.2.13/linux/drivers/net/sk98lin/skrlmt.c linux/drivers/net/sk98lin/skrlmt.c
@@ -0,0 +1,3423 @@
+/******************************************************************************
+ *
+ * Name:	skrlmt.c
+ * Project:	GEnesis, PCI Gigabit Ethernet Adapter
+ * Version:	$Revision: 1.48 $
+ * Date:	$Date: 1999/10/04 14:01:17 $
+ * Purpose:	Manage links on SK-NET Adapters, esp. redundant ones.
+ *
+ ******************************************************************************/
+
+/******************************************************************************
+ *
+ *	(C)Copyright 1998,1999 SysKonnect,
+ *	a business unit of Schneider & Koch & Co. Datensysteme GmbH.
+ *
+ *	See the file "skge.c" for further information.
+ *
+ *	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.
+ *
+ ******************************************************************************/
+
+/******************************************************************************
+ *
+ * History:
+ *
+ *	$Log: skrlmt.c,v $
+ *	Revision 1.48  1999/10/04 14:01:17  rassmann
+ *	Corrected reaction to reception of BPDU frames.
+ *	Added parameter descriptions to "For Readme" section skrlmt.txt.
+ *	Clarified usage of lookahead result *pForRlmt.
+ *	Requested driver to present RLMT packets as soon as poosible.
+ *	
+ *	Revision 1.47  1999/07/20 12:53:36  rassmann
+ *	Fixed documentation errors for lookahead macros.
+ *	
+ *	Revision 1.46  1999/05/28 13:29:16  rassmann
+ *	Replaced C++-style comment.
+ *	
+ *	Revision 1.45  1999/05/28 13:28:08  rassmann
+ *	Corrected syntax error (xxx).
+ *	
+ *	Revision 1.44  1999/05/28 11:15:54  rassmann
+ *	Changed behaviour to reflect Design Spec v1.2.
+ *	Controlling Link LED(s).
+ *	Introduced RLMT Packet Version field in RLMT Packet.
+ *	Newstyle lookahead macros (checking meta-information before looking at
+ *	  the packet).
+ *	
+ *	Revision 1.43  1999/01/28 13:12:43  rassmann
+ *	Corrected Lookahead (bug introduced in previous Rev.).
+ *	
+ *	Revision 1.42  1999/01/28 12:50:41  rassmann
+ *	Not using broadcast time stamps in CheckLinkState mode.
+ *	
+ *	Revision 1.41  1999/01/27 14:13:02  rassmann
+ *	Monitoring broadcast traffic.
+ *	Switching more reliably and not too early if switch is
+ *	 configured for spanning tree.
+ *	
+ *	Revision 1.40  1999/01/22 13:17:30  rassmann
+ *	Informing PNMI of NET_UP.
+ *	Clearing RLMT multicast addresses before first setting them.
+ *	Reporting segmentation earlier, setting a "quiet time"
+ *	 after a report.
+ *	
+ *	Revision 1.39  1998/12/10 15:29:53  rassmann
+ *	Corrected SuspectStatus in SkRlmtBuildCheckChain().
+ *	Corrected CHECK_SEG mode.
+ *	
+ *	Revision 1.38  1998/12/08 13:11:23  rassmann
+ *	Stopping SegTimer at RlmtStop.
+ *	
+ *	Revision 1.37  1998/12/07 16:51:42  rassmann
+ *	Corrected comments.
+ *	
+ *	Revision 1.36  1998/12/04 10:58:56  rassmann
+ *	Setting next pointer to NULL when receiving.
+ *	
+ *	Revision 1.35  1998/12/03 16:12:42  rassmann
+ *	Ignoring/correcting illegal PrefPort values.
+ *	
+ *	Revision 1.34  1998/12/01 11:45:35  rassmann
+ *	Code cleanup.
+ *	
+ *	Revision 1.33  1998/12/01 10:29:32  rassmann
+ *	Starting standby ports before getting the net up.
+ *	Checking if a port is started when the link comes up.
+ *	
+ *	Revision 1.32  1998/11/30 16:19:50  rassmann
+ *	New default for PortNoRx.
+ *	
+ *	Revision 1.31  1998/11/27 19:17:13  rassmann
+ *	Corrected handling of LINK_DOWN coming shortly after LINK_UP.
+ *	
+ *	Revision 1.30  1998/11/24 12:37:31  rassmann
+ *	Implemented segmentation check.
+ *	
+ *	Revision 1.29  1998/11/18 13:04:32  rassmann
+ *	Secured PortUpTimer event.
+ *	Waiting longer before starting standby port(s).
+ *	
+ *	Revision 1.28  1998/11/17 13:43:04  rassmann
+ *	Handling (logical) tx failure.
+ *	Sending packet on logical address after PORT_SWITCH.
+ *	
+ *	Revision 1.27  1998/11/13 17:09:50  rassmann
+ *	Secured some events against being called in wrong state.
+ *	
+ *	Revision 1.26  1998/11/13 16:56:54  rassmann
+ *	Added macro version of SkRlmtLookaheadPacket.
+ *	
+ *	Revision 1.25  1998/11/06 18:06:04  rassmann
+ *	Corrected timing when RLMT checks fail.
+ *	Clearing tx counter earlier in periodical checks.
+ *	
+ *	Revision 1.24  1998/11/05 10:37:27  rassmann
+ *	Checking destination address in Lookahead.
+ *	
+ *	Revision 1.23  1998/11/03 13:53:49  rassmann
+ *	RLMT should switch now (at least in mode 3).
+ *	
+ *	Revision 1.22  1998/10/29 14:34:49  rassmann
+ *	Clearing SK_RLMT struct at startup.
+ *	Initializing PortsUp during SK_RLMT_START.
+ *	
+ *	Revision 1.21  1998/10/28 11:30:17  rassmann
+ *	Default mode is now SK_RLMT_CHECK_LOC_LINK.
+ *	
+ *	Revision 1.20  1998/10/26 16:02:03  rassmann
+ *	Ignoring LINK_DOWN for links that are down.
+ *	
+ *	Revision 1.19  1998/10/22 15:54:01  rassmann
+ *	Corrected EtherLen.
+ *	Starting Link Check when second port comes up.
+ *	
+ *	Revision 1.18  1998/10/22 11:39:50  rassmann
+ *	Corrected signed/unsigned mismatches.
+ *	Corrected receive list handling and address recognition.
+ *	
+ *	Revision 1.17  1998/10/19 17:01:20  rassmann
+ *	More detailed checking of received packets.
+ *	
+ *	Revision 1.16  1998/10/15 15:16:34  rassmann
+ *	Finished Spanning Tree checking.
+ *	Checked with lint.
+ *	
+ *	Revision 1.15  1998/09/24 19:16:07  rassmann
+ *	Code cleanup.
+ *	Introduced Timer for PORT_DOWN due to no RX.
+ *	
+ *	Revision 1.14  1998/09/18 20:27:14  rassmann
+ *	Added address override.
+ *	
+ *	Revision 1.13  1998/09/16 11:31:48  rassmann
+ *	Including skdrv1st.h again. :(
+ *	
+ *	Revision 1.12  1998/09/16 11:09:50  rassmann
+ *	Syntax corrections.
+ *	
+ *	Revision 1.11  1998/09/15 12:32:03  rassmann
+ *	Syntax correction.
+ *	
+ *	Revision 1.10  1998/09/15 11:28:49  rassmann
+ *	Syntax corrections.
+ *	
+ *	Revision 1.9  1998/09/14 17:07:37  rassmann
+ *	Added code for port checking via LAN.
+ *	Changed Mbuf definition.
+ *	
+ *	Revision 1.8  1998/09/07 11:14:14  rassmann
+ *	Syntax corrections.
+ *	
+ *	Revision 1.7  1998/09/07 09:06:07  rassmann
+ *	Syntax corrections.
+ *	
+ *	Revision 1.6  1998/09/04 19:41:33  rassmann
+ *	Syntax corrections.
+ *	Started entering code for checking local links.
+ *	
+ *	Revision 1.5  1998/09/04 12:14:27  rassmann
+ *	Interface cleanup.
+ *	
+ *	Revision 1.4  1998/09/02 16:55:28  rassmann
+ *	Updated to reflect new DRV/HWAC/RLMT interface.
+ *	
+ *	Revision 1.3  1998/08/27 14:29:03  rassmann
+ *	Code cleanup.
+ *	
+ *	Revision 1.2  1998/08/27 14:26:24  rassmann
+ *	Updated interface.
+ *	
+ *	Revision 1.1  1998/08/21 08:26:49  rassmann
+ *	First public version.
+ *
+ ******************************************************************************/
+
+/******************************************************************************
+ *
+ * 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 1.48 1999/10/04 14:01:17 rassmann Exp $ (C) SysKonnect.";
+#endif	/* !defined(lint) */
+
+#define __SKRLMT_C
+
+#ifdef __cplusplus
+xxxx	/* not supported yet - force error */
+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. */
+
+/*
+ * Amount that a time stamp must be later to be recognized as "substantially
+ * later". This is about 1/128 sec.
+ */
+
+#define SK_RLMT_BC_DELTA	((SK_TICKS_PER_SEC >> 7) + 1)
+
+/* ----- 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}};
+SK_MAC_ADDR	BcAddr = {{0xFF,  0xFF,  0xFF,  0xFF,  0xFF,  0xFF}};
+
+/* local variables ************************************************************/
+
+/* None. */
+
+/* functions ******************************************************************/
+
+RLMT_STATIC void	SkRlmtCheckSwitch(
+	SK_AC	*pAC,
+	SK_IOC	IoC);
+RLMT_STATIC void	SkRlmtCheckSeg(
+	SK_AC	*pAC,
+	SK_IOC	IoC);
+
+/******************************************************************************
+ *
+ *	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 adapter 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_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.RlmtState = SK_RLMT_RS_INIT;
+		pAC->Rlmt.RootIdSet = SK_FALSE;
+		pAC->Rlmt.MacPreferred = 0xFFFFFFFF;	  /* Automatic. */
+		pAC->Rlmt.PrefPort = SK_RLMT_DEF_PREF_PORT;
+		pAC->Rlmt.MacActive = pAC->Rlmt.PrefPort; /* Just assuming. */
+		pAC->Rlmt.RlmtMode = SK_RLMT_DEF_MODE;
+		pAC->Rlmt.TimeoutValue = SK_RLMT_DEF_TO_VAL;
+		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))
+
+		/* Initialize HW registers? */
+
+		if (pAC->GIni.GIMacsFound < 2) {
+			Para.Para32[0] = SK_RLMT_CHECK_LINK;
+			(void)SkRlmtEvent(pAC, IoC, SK_RLMT_MODE_CHANGE, Para);
+		}
+		break;
+
+	case SK_INIT_RUN:
+		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->Addr.Port[i
+					].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.RlmtMode & SK_RLMT_CHECK_SEG) {
+				/* Add BPDU MC address. */
+
+				(void)SkAddrMcAdd(
+					pAC,
+					IoC,
+					i,
+					&BridgeMcAddr,
+					SK_ADDR_PERMANENT);
+			}
+
+			(void)SkAddrMcUpdate(pAC, IoC, i);
+		}
+		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	i;
+	SK_U32	NumMacsUp;
+	SK_U32	FirstMacUp=0;
+	SK_U32	PrevMacUp=0;
+
+	if (!(pAC->Rlmt.RlmtMode & SK_RLMT_CHECK_LOC_LINK)) {
+		for (i = 0; i < (SK_U32)pAC->GIni.GIMacsFound; i++) {
+			pAC->Rlmt.Port[i].PortsChecked = 0;
+		}
+		return;	/* Nothing to build. */
+	}
+
+	SK_DBG_MSG(
+		pAC,
+		SK_DBGMOD_RLMT,
+		SK_DBGCAT_CTRL,
+		("SkRlmtBuildCheckChain.\n"))
+
+	NumMacsUp = 0;
+
+	for (i = 0; i < (SK_U32)pAC->GIni.GIMacsFound; i++) {
+		pAC->Rlmt.Port[i].PortsChecked = 0;
+		pAC->Rlmt.Port[i].PortsSuspect = 0;
+		pAC->Rlmt.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.Port[i].LinkDown) {
+			if (NumMacsUp == 0) {
+				FirstMacUp = i;
+			}
+			else {
+				pAC->Rlmt.Port[PrevMacUp].PortCheck[
+					pAC->Rlmt.Port[
+					PrevMacUp].PortsChecked].CheckAddr =
+					pAC->Addr.Port[i].CurrentMacAddress;
+				pAC->Rlmt.Port[PrevMacUp].PortCheck[
+					pAC->Rlmt.Port[
+					PrevMacUp].PortsChecked].SuspectTx =
+					SK_FALSE;
+				pAC->Rlmt.Port[PrevMacUp].PortsChecked++;
+			}
+			PrevMacUp = i;
+			NumMacsUp++;
+		}
+	}
+
+	if (NumMacsUp > 1) {
+		pAC->Rlmt.Port[PrevMacUp].PortCheck[pAC->Rlmt.Port[
+			PrevMacUp].PortsChecked].CheckAddr =
+			pAC->Addr.Port[FirstMacUp].CurrentMacAddress;
+		pAC->Rlmt.Port[PrevMacUp].PortCheck[pAC->Rlmt.Port[
+			PrevMacUp].PortsChecked].SuspectTx = SK_FALSE;
+		pAC->Rlmt.Port[PrevMacUp].PortsChecked++;
+	}
+
+#ifdef DEBUG
+	for (i = 0; i < (SK_U32)pAC->GIni.GIMacsFound; i++) {
+                SK_DBG_MSG(
+                        pAC,
+                        SK_DBGMOD_RLMT,
+                        SK_DBGCAT_CTRL,
+                        ("Port %d checks %d other ports: %2X.\n",
+				i,
+				pAC->Rlmt.Port[i].PortsChecked,
+				pAC->Rlmt.Port[i].PortCheck[0].CheckAddr.a[5]))
+	}
+#endif	/* DEBUG */
+
+	return;       
+}	/* SkRlmtBuildCheckChain */
+
+#ifdef SK_RLMT_SLOW_LOOKAHEAD
+
+/******************************************************************************
+ *
+ *	SkRlmtLookaheadPacket - examine received packet shortly, count s-th
+ *
+ * Description:
+ *	This routine examines each received packet fast and short and
+ *	increments some counters.
+ *	The received packet has to be stored virtually contiguous.
+ *	This function does the following:
+ *	- Increment some counters.
+ *	- Ensure length is sufficient.
+ *	- Ensure that destination address is physical port address,
+ *	  RLMT multicast, or BPDU multicast address.
+ *
+ * Notes:
+ *	This function is fully reentrant while the fast path is not blocked.
+ *
+ * Context:
+ *	isr/dpr, not pageable
+ *
+ * Returns:
+ *	SK_FALSE packet for upper layers
+ *	SK_TRUE  packet for RLMT
+ */
+SK_BOOL	SkRlmtLookaheadPacket(
+SK_AC		*pAC,		/* adapter context */
+SK_U32		PortIdx,	/* receiving port */
+SK_U8		*pLaPacket,	/* received packet's data */
+unsigned	PacketLength,	/* received packet's length */ /* Necessary? */
+unsigned	LaLength)	/* lookahead length */
+{
+	int	i;
+	SK_BOOL	IsBc;		/* Broadcast address? */
+	int	RxDest;		/* Receive destination? */
+	int	Offset;		/* Offset of data to present to LOOKAHEAD. */
+	int	NumBytes;	/* #Bytes to present to LOOKAHEAD. */
+	SK_RLMT_PACKET	*pRPacket;
+	SK_ADDR_PORT	*pAPort;
+
+#ifdef DEBUG
+	PacketLength = PacketLength;
+#endif	/* DEBUG */
+
+	pRPacket = (SK_RLMT_PACKET*)pLaPacket;
+	pAPort = &pAC->Addr.Port[PortIdx];
+
+#ifdef DEBUG
+	if (pLaPacket == NULL) {
+
+		/* Create error log entry. */
+
+		SK_ERR_LOG(
+			pAC,
+			SK_ERRCL_SW,
+			SKERR_RLMT_E001,
+			SKERR_RLMT_E001_MSG);
+
+		SK_DBG_MSG(
+			pAC,
+			SK_DBGMOD_RLMT,
+			SK_DBGCAT_RX,
+			("SkRlmtLookaheadPacket: NULL pointer.\n"))
+
+		return (SK_FALSE);
+	}
+#endif	/* DEBUG */
+
+	/* Drivers should get IsBc from the descriptor. */
+
+	IsBc = SK_TRUE;
+	for (i = 0; IsBc && i < SK_MAC_ADDR_LEN; i++) {
+		IsBc = IsBc && (pLaPacket[i] == 0xFF);
+	}
+
+	SK_RLMT_PRE_LOOKAHEAD(
+		pAC,
+		PortIdx,
+		PacketLength,
+		IsBc,
+		&Offset,
+		&NumBytes)
+
+	if (NumBytes == 0) {
+		return (SK_FALSE);
+	}
+
+	SK_RLMT_LOOKAHEAD(
+		pAC,
+		PortIdx,
+		&pLaPacket[Offset],
+		IsBc,
+		pLaPacket[0] & 1,	/* Drivers: Get info from descriptor. */
+		&RxDest)
+
+	if (RxDest & SK_RLMT_RX_RLMT) {
+		return (SK_TRUE);
+	}
+
+	return (SK_FALSE);
+}	/* SkRlmtLookaheadPacket */
+
+#endif	/* SK_RLMT_SLOW_LOOKAHEAD */
+
+/******************************************************************************
+ *
+ *	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		PortIdx,	/* 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;
+
+	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[PortIdx].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 = PortIdx;
+		Length -= 14;
+		SK_U16_TO_NETWORK_ORDER(Length, &pPacket->TypeLen[0]);
+
+		if (PacketType == SK_PACKET_ALIVE) {
+			pAC->Rlmt.Port[PortIdx].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	PortIdx)	/* 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[PortIdx].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 virtual 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.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 = PortIdx;
+		Length -= 14;
+		SK_U16_TO_NETWORK_ORDER(Length, &pSPacket->TypeLen[0]);
+
+		pAC->Rlmt.Port[PortIdx].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	PortIdx)
+{
+	unsigned	j;
+	SK_EVPARA	Para;
+	SK_RLMT_PORT	*pRPort;
+
+	pRPort = &pAC->Rlmt.Port[PortIdx];
+	if (pAC->Rlmt.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 multicast address.
+			 */
+
+			if ((Para.pParaPtr = SkRlmtBuildPacket(
+				pAC,
+				IoC,
+				PortIdx,
+				SK_PACKET_ALIVE,
+				&pAC->Addr.Port[PortIdx].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,
+						PortIdx,
+						SK_PACKET_ALIVE,
+						&pAC->Addr.Port[PortIdx].CurrentMacAddress,
+						&pRPort->PortCheck[j].CheckAddr)
+						) != NULL) {
+					SkEventQueue(
+						pAC,
+						SKGE_DRV,
+						SK_DRV_RLMT_SEND,
+						Para);
+				}
+			}
+		}
+	}
+
+	if ((pAC->Rlmt.RlmtMode & SK_RLMT_CHECK_SEG) &&
+		(pAC->Rlmt.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,
+				PortIdx)
+			) != NULL) {
+			
+			pAC->Rlmt.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",
+					PortIdx))
+		}
+	}
+
+	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	PortIdx)	/* port to check */
+{
+	SK_RLMT_PORT	*pRPort;
+	SK_EVPARA	Para;
+
+	pRPort = &pAC->Rlmt.Port[PortIdx];
+	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] = PortIdx;
+		SkTimerStart(
+			pAC,
+			IoC,
+			&pRPort->UpTimer,
+			SK_RLMT_PORTUP_TIM_VAL,
+			SKGE_RLMT,
+			SK_RLMT_PORTUP_TIM,
+			Para);
+		SkRlmtCheckSwitch(pAC, IoC);
+	}
+	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);
+		SkRlmtCheckSwitch(pAC, IoC);
+	}
+
+	pRPort->CheckingState &= ~SK_RLMT_PCS_RX;
+	return;
+}	/* SkRlmtPortReceives */
+
+
+/******************************************************************************
+ *
+ *	SkRlmtPacketReceive - receive a packet for closer examination
+ *
+ * Description:
+ *	This routine examines a packet more closely than SkRlmtLookahead*().
+ *
+ * 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			PortIdx;
+	SK_ADDR_PORT		*pAPort;
+	SK_RLMT_PORT		*pRPort;
+	SK_RLMT_PACKET		*pRPacket;
+	SK_SPTREE_PACKET	*pSPacket;
+	SK_EVPARA		Para;
+
+	PortIdx	= pMb->PortIdx;
+	pAPort = &pAC->Addr.Port[PortIdx];
+	pRPort = &pAC->Rlmt.Port[PortIdx];
+
+	SK_DBG_MSG(
+		pAC,
+		SK_DBGMOD_RLMT,
+		SK_DBGCAT_RX,
+		("SkRlmtPacketReceive: PortIdx == %d.\n", PortIdx))
+
+	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, PortIdx);
+	}
+	
+	/* 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.
+		 */
+
+		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"))
+
+				/* Alive Reply Packet. */
+
+#if 0
+				pRPort->RlmtAcksPerTimeSlot++;
+#endif	/* 0 */
+
+				if (!(pAC->Addr.Port[PortIdx].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] = PortIdx;
+						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++;
+#if 0
+				pRPort->RlmtChksPerTimeSlot++;
+#endif	/* 0 */
+
+				/* Answer. */
+
+				for (i = 0; i < SK_MAC_ADDR_LEN; i++) {
+					pRPacket->DstAddr[i] =
+						pRPacket->SrcAddr[i];
+					pRPacket->SrcAddr[i] = pAC->Addr.Port[
+						PortIdx].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] = PortIdx;
+			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,
+				PortIdx,
+				SK_PACKET_ALIVE,
+				&pAC->Addr.Port[PortIdx].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);
+			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.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.LinksUp > 1) &&
+				(pAC->Rlmt.RlmtMode & SK_RLMT_CHECK_SEG) &&
+				!(pAC->Rlmt.CheckingState & SK_RLMT_RCS_SEG)) {
+				pAC->Rlmt.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;
+		}
+
+		SkDrvFreeRlmtMbuf(pAC, IoC, pMb);
+
+		if (pAC->Rlmt.CheckingState & SK_RLMT_RCS_REPORT_SEG) {
+			SkRlmtCheckSeg(pAC, IoC);
+		}
+	}
+	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	PortIdx)	/* port to check */
+{
+	unsigned	i;
+	SK_U32		NewTimeout;
+	SK_RLMT_PORT	*pRPort;
+	SK_EVPARA	Para;
+
+	pRPort = &pAC->Rlmt.Port[PortIdx];
+
+	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",
+				PortIdx,
+				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.LinksUp > 1) &&
+			(pAC->Rlmt.RlmtMode & SK_RLMT_CHECK_SEG) &&
+			!(pAC->Rlmt.CheckingState & SK_RLMT_RCS_SEG)) {
+			pAC->Rlmt.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.TimeoutValue);
+			if (NewTimeout < SK_RLMT_MIN_TO_VAL) {
+				NewTimeout = SK_RLMT_MIN_TO_VAL;
+			}
+
+			if (!(pRPort->CheckingState & SK_RLMT_PCS_RX)) {
+				Para.Para32[0] = PortIdx;
+				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?
+				 */
+
+				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,
+							PortIdx,
+							SK_PACKET_CHECK_TX,
+							&pAC->Addr.Port[PortIdx].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",
+				PortIdx,
+                                pRPort->PacketsPerTimeSlot -
+					pRPort->BpduPacketsPerTimeSlot,
+				pRPort->PacketsPerTimeSlot))
+		
+		SkRlmtPortReceives(pAC, IoC, PortIdx);
+		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	A,	/* active port */
+SK_U32	P,	/* preferred port */
+SK_U32	*N)	/* 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: %.08x%.08x.\n",
+			i,
+			*((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;
+				*N = i;
+				PortFound = SK_TRUE;
+			}
+		}
+	}
+
+	if (PortFound) {
+		SK_DBG_MSG(
+			pAC,
+			SK_DBGMOD_RLMT,
+			SK_DBGCAT_CTRL,
+			("Port %d received the last broadcast.\n", *N))
+
+		/* Look if another port's time stamp is similar. */
+
+		for (i = 0; i < (SK_U32)pAC->GIni.GIMacsFound; i++) {
+			if (i == *N) {
+				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 %s.\n",
+					i,
+					"at a similar time"))
+				break;
+			}
+		}
+	}
+
+#ifdef DEBUG
+	if (PortFound) {
+		SK_DBG_MSG(
+			pAC,
+			SK_DBGMOD_RLMT,
+			SK_DBGCAT_CTRL,
+			("SK_RLMT_CHECK_SWITCH found Port %d receiving %s.\n",
+				*N,
+				"the substantially latest broadcast"))
+	}
+#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	A,	/* active port */
+SK_U32	P,	/* preferred port */
+SK_U32	*N)	/* 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)) {
+			*N = i;
+			if (!pAC->Rlmt.Port[A].PortDown &&
+				!(pAC->Rlmt.Port[A].CheckingState &
+				SK_RLMT_PCS_RX)) {
+				*N = A;
+			}
+			if (!pAC->Rlmt.Port[P].PortDown &&
+				!(pAC->Rlmt.Port[P].CheckingState &
+				SK_RLMT_PCS_RX)) {
+				*N = P;
+			}
+			PortFound = SK_TRUE;
+			SK_DBG_MSG(
+				pAC,
+				SK_DBGMOD_RLMT,
+				SK_DBGCAT_CTRL,
+				("SK_RLMT_CHECK_SWITCH found Port %d up and not check RX.\n",
+					*N))
+			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	A,	/* active port */
+SK_U32	P,	/* preferred port */
+SK_U32	*N,	/* 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) {
+			*N = i;
+			if (pAC->Rlmt.Port[A].PortState == SK_RLMT_PS_UP &&
+				pAC->GIni.GP[A].PAutoNegFail != AutoNegDone) {
+				*N = A;
+			}
+			if (pAC->Rlmt.Port[P].PortState == SK_RLMT_PS_UP &&
+				pAC->GIni.GP[P].PAutoNegFail != AutoNegDone) {
+				*N = P;
+			}
+			PortFound = SK_TRUE;
+			SK_DBG_MSG(
+				pAC,
+				SK_DBGMOD_RLMT,
+				SK_DBGCAT_CTRL,
+				("SK_RLMT_CHECK_SWITCH found Port %d up.\n",
+					*N))
+			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	A,	/* active port */
+SK_U32	P,	/* preferred port */
+SK_U32	*N,	/* new active port */
+SK_BOOL	AutoNegDone)	/* successfully auto-negotiated? */
+{
+	SK_U64		GuTimeStamp=0;
+	SK_U32		i;
+	SK_BOOL		PortFound;
+
+	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;
+			*N = i;
+			PortFound = SK_TRUE;
+			break;
+		}
+	}
+
+	if (!PortFound) {
+		return (SK_FALSE);
+	}
+
+	for (i = *N + 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;
+			*N = i;
+		}
+	}
+
+	SK_DBG_MSG(
+		pAC,
+		SK_DBGMOD_RLMT,
+		SK_DBGCAT_CTRL,
+		("SK_RLMT_CHECK_SWITCH found Port %d going up.\n", *N))
+
+	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	A,	/* active port */
+SK_U32	P,	/* preferred port */
+SK_U32	*N,	/* 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) {
+			*N = i;
+			if (pAC->Rlmt.Port[A].PortState == SK_RLMT_PS_DOWN &&
+				pAC->GIni.GP[A].PAutoNegFail != AutoNegDone) {
+				*N = A;
+			}
+			if (pAC->Rlmt.Port[P].PortState == SK_RLMT_PS_DOWN &&
+				pAC->GIni.GP[P].PAutoNegFail != AutoNegDone) {
+				*N = P;
+			}
+			PortFound = SK_TRUE;
+			SK_DBG_MSG(
+				pAC,
+				SK_DBGMOD_RLMT,
+				SK_DBGCAT_CTRL,
+				("SK_RLMT_CHECK_SWITCH found Port %d down.\n",
+					*N))
+			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_EVPARA	Para;
+	SK_U32		A;
+	SK_U32		P;
+	SK_U32		i;
+	SK_BOOL		PortFound;
+
+	if (pAC->Rlmt.RlmtState == SK_RLMT_RS_INIT) {
+		return;
+	}
+
+	A = pAC->Rlmt.MacActive;	/* Index of active port. */
+	P = pAC->Rlmt.PrefPort;		/* Index of preferred port. */
+	PortFound = SK_FALSE;
+
+	if (pAC->Rlmt.LinksUp == 0) {
+
+		/*
+		 * Last link went down - shut down the net.
+		 */
+
+		pAC->Rlmt.RlmtState = SK_RLMT_RS_NET_DOWN;
+		Para.Para32[0] = SK_RLMT_NET_DOWN_TEMP;
+		SkEventQueue(
+			pAC,
+			SKGE_DRV,
+			SK_DRV_NET_DOWN,
+			Para);
+
+		return;
+	}
+	else if (pAC->Rlmt.LinksUp == 1 &&
+		pAC->Rlmt.RlmtState == SK_RLMT_RS_NET_DOWN) {
+
+		/* First link came up - get the net up. */
+
+		pAC->Rlmt.RlmtState = SK_RLMT_RS_NET_UP;
+
+		/*
+		 * If pAC->Rlmt.MacActive != Para.Para32[0],
+		 * the DRV switches to the port that came up.
+		 */
+
+		for (i = 0; i < (SK_U32)pAC->GIni.GIMacsFound; i++) {
+			if (!pAC->Rlmt.Port[i].LinkDown) {
+				if (!pAC->Rlmt.Port[A].LinkDown) {
+					i = A;
+				}
+				if (!pAC->Rlmt.Port[P].LinkDown) {
+					i = P;
+				}
+				PortFound = SK_TRUE;
+				break;
+			}
+		}
+
+		if (PortFound) {
+			Para.Para32[0] = pAC->Rlmt.MacActive;
+			Para.Para32[1] = i;
+			SkEventQueue(
+				pAC,
+				SKGE_PNMI,
+				SK_PNMI_EVT_RLMT_PORT_SWITCH,
+				Para);
+
+			pAC->Rlmt.MacActive = i;
+			Para.Para32[0] = i;
+			SkEventQueue(pAC, SKGE_DRV, SK_DRV_NET_UP, Para);
+
+			if ((Para.pParaPtr = SkRlmtBuildPacket(
+					pAC,
+					IoC,
+					i,
+					SK_PACKET_ANNOUNCE,
+					&pAC->Addr.CurrentMacAddress,
+					&SkRlmtMcAddr)
+				) != NULL) {
+
+				/*
+				 * Send packet to RLMT multicast address
+				 * to force switches to learn the new
+				 * location of the 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;
+	}
+	else {
+		Para.Para32[0] = A;
+
+		/*
+		 * 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 MacActive != SelectedPort,
+		 *     If old ActivePort is LinkDown,
+		 *       SwitchHard
+		 *     else
+		 *       SwitchSoft
+		 */
+
+		if (pAC->Rlmt.RlmtMode != SK_RLMT_CHECK_LINK) {
+			if (!PortFound) {
+				PortFound = SkRlmtSelectBcRx(pAC, IoC,
+					A, P, &Para.Para32[1]);
+			}
+
+			if (!PortFound) {
+				PortFound = SkRlmtSelectNotSuspect(pAC, IoC,
+					A, P, &Para.Para32[1]);
+			}
+		}
+
+		if (!PortFound) {
+			PortFound = SkRlmtSelectUp(pAC, IoC,
+				A, P, &Para.Para32[1], AUTONEG_SUCCESS);
+		}
+
+		if (!PortFound) {
+			PortFound = SkRlmtSelectUp(pAC, IoC,
+				A, P, &Para.Para32[1], AUTONEG_FAILED);
+		}
+
+		if (!PortFound) {
+			PortFound = SkRlmtSelectGoingUp(pAC, IoC,
+				A, P, &Para.Para32[1], AUTONEG_SUCCESS);
+		}
+
+		if (!PortFound) {
+			PortFound = SkRlmtSelectGoingUp(pAC, IoC,
+				A, P,&Para.Para32[1], AUTONEG_FAILED);
+		}
+
+		if (pAC->Rlmt.RlmtMode != SK_RLMT_CHECK_LINK) {
+			if (!PortFound) {
+				PortFound = SkRlmtSelectDown(pAC, IoC,
+					A, P,&Para.Para32[1], AUTONEG_SUCCESS);
+			}
+
+			if (!PortFound) {
+				PortFound = SkRlmtSelectDown(pAC, IoC,
+					A, P,&Para.Para32[1], AUTONEG_FAILED);
+			}
+		}
+
+		if (PortFound) {
+			if (Para.Para32[1] != A) {
+				pAC->Rlmt.MacActive = Para.Para32[1];
+				SK_HWAC_LINK_LED(
+					pAC,
+					IoC,
+					Para.Para32[1],
+					SK_LED_ACTIVE);
+				if (pAC->Rlmt.Port[A].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);
+				}
+				SkEventQueue(
+					pAC,
+					SKGE_PNMI,
+					SK_PNMI_EVT_RLMT_PORT_SWITCH,
+					Para);
+				if ((Para.pParaPtr = SkRlmtBuildPacket(
+						pAC,
+						IoC,
+						Para.Para32[1],
+						SK_PACKET_ANNOUNCE,
+						&pAC->Addr.CurrentMacAddress,
+						&SkRlmtMcAddr)
+					) != NULL) {
+
+					/*
+					 * Send "new" packet to RLMT multicast
+					 * address to force switches to learn
+					 * the new location of the MAC address.
+					 */
+
+					SkEventQueue(
+						pAC,
+						SKGE_DRV,
+						SK_DRV_RLMT_SEND,
+						Para);
+				}
+			}
+		}
+		else {
+			SK_ERR_LOG(
+				pAC,
+				SK_ERRCL_SW,
+				SKERR_RLMT_E004,
+				SKERR_RLMT_E004_MSG);
+		}
+	}
+
+	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_BOOL	Equal;
+	SK_U32	i, j;
+
+	pAC->Rlmt.RootIdSet = SK_FALSE;
+	Equal = SK_TRUE;
+	for (i = 0; i < (SK_U32)pAC->GIni.GIMacsFound; i++) {
+		if (pAC->Rlmt.Port[i].LinkDown ||
+			!pAC->Rlmt.Port[i].RootIdSet) {
+			continue;
+		}
+
+		SK_DBG_MSG(
+			pAC,
+			SK_DBGMOD_RLMT,
+			SK_DBGCAT_CTRL,
+			("Root ID %d: %02x %02x %02x %02x %02x %02x %02x %02x.\n",
+				i,
+				pAC->Rlmt.Port[i].Root.Id[0],
+				pAC->Rlmt.Port[i].Root.Id[1],
+				pAC->Rlmt.Port[i].Root.Id[2],
+				pAC->Rlmt.Port[i].Root.Id[3],
+				pAC->Rlmt.Port[i].Root.Id[4],
+				pAC->Rlmt.Port[i].Root.Id[5],
+				pAC->Rlmt.Port[i].Root.Id[6],
+				pAC->Rlmt.Port[i].Root.Id[7]))
+
+		if (!pAC->Rlmt.RootIdSet) {
+			pAC->Rlmt.Root = pAC->Rlmt.Port[i].Root;
+			pAC->Rlmt.RootIdSet = SK_TRUE;
+			continue;
+		}
+
+		for (j = 0; j < 8; j ++) {
+			Equal &= pAC->Rlmt.Port[i].Root.Id[j] ==
+				pAC->Rlmt.Root.Id[j];
+			if (!Equal) {
+				break;
+			}
+		}
+		
+		if (!Equal) {
+			SK_ERR_LOG(
+				pAC,
+				SK_ERRCL_COMM,
+				SKERR_RLMT_E005,
+				SKERR_RLMT_E005_MSG);
+#ifdef SK_PNMI_EVT_SEGMENTATION
+			SkEventQueue(
+				pAC,
+				SKGE_PNMI,
+				SK_PNMI_EVT_SEGMENTATION,
+				Para);
+#endif	/* SK_PNMI_EVT_SEGMENTATION */
+			pAC->Rlmt.CheckingState &= ~SK_RLMT_RCS_REPORT_SEG;
+			break;
+		}
+	}
+}	/* 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	PortIdx)	/* event code */
+{
+	SK_EVPARA	Para;
+
+	pAC->Rlmt.Port[PortIdx].PortState = SK_RLMT_PS_LINK_DOWN;
+	pAC->Rlmt.Port[PortIdx].PortStarted = SK_TRUE;
+	pAC->Rlmt.Port[PortIdx].LinkDown = SK_TRUE;
+	pAC->Rlmt.Port[PortIdx].PortDown = SK_TRUE;
+	pAC->Rlmt.Port[PortIdx].CheckingState = 0;
+	pAC->Rlmt.Port[PortIdx].RootIdSet = SK_FALSE;
+	Para.Para32[0] = PortIdx;
+	SkEventQueue(pAC, SKGE_HWAC, SK_HWEV_PORT_START, Para);
+}	/* SkRlmtPortStart */
+
+
+/******************************************************************************
+ *
+ *	SkRlmtEvent - a PORT- or an RLMT-specific event happened
+ *
+ * Description:
+ *	This routine handles 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 */
+{
+	SK_U32		i, j;
+	SK_RLMT_PORT	*pRPort;
+	SK_EVPARA	Para2;
+	SK_MBUF		*pMb;
+	SK_MBUF		*pNextMb;
+	SK_MAC_ADDR	*pOldMacAddr;
+	SK_MAC_ADDR	*pNewMacAddr;
+	SK_U32		Timeout;
+	SK_U32		NewTimeout;
+	SK_U32		PrevRlmtMode;
+
+	switch (Event) {
+	case SK_RLMT_PORTSTART_TIM:	/* From RLMT via TIME. */
+		SK_DBG_MSG(
+			pAC,
+			SK_DBGMOD_RLMT,
+			SK_DBGCAT_CTRL,
+			("SK_RLMT_PORTSTART_TIMEOUT Port %d Event (%d) BEGIN.\n", Para.Para32[0], Event))
+
+		/*
+		 * 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 < (SK_U32)pAC->GIni.GIMacsFound; i++) {
+				if (!pAC->Rlmt.Port[i].PortStarted) {
+					SkRlmtPortStart(pAC, IoC, i);
+				}
+			}
+		}
+
+		SK_DBG_MSG(
+			pAC,
+			SK_DBGMOD_RLMT,
+			SK_DBGCAT_CTRL,
+			("SK_RLMT_PORTSTART_TIMEOUT Event (%d) END.\n", Event))
+		break;
+
+	case SK_RLMT_LINK_UP:		/* From SIRQ. */
+		SK_DBG_MSG(
+			pAC,
+			SK_DBGMOD_RLMT,
+			SK_DBGCAT_CTRL,
+			("SK_RLMT_LINK_UP Port %d Event (%d) BEGIN.\n",
+				Para.Para32[0], Event))
+
+		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 (%d) EMPTY.\n", Event))
+			break;
+		}
+
+		if (!pRPort->LinkDown) {
+			/* RA;:;: Any better solution? */
+
+			SK_DBG_MSG(
+				pAC,
+				SK_DBGMOD_RLMT,
+				SK_DBGCAT_CTRL,
+				("SK_RLMT_LINK_UP Event (%d) EMPTY.\n", Event))
+			break;
+		}
+
+		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;
+		if (pAC->Rlmt.LinksUp == 0) {
+			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);
+		}
+		pAC->Rlmt.LinksUp++;
+
+		for (i = 0; i < (SK_U32)pAC->GIni.GIMacsFound; i++) {
+			if (!pAC->Rlmt.Port[i].PortStarted) {
+				SkRlmtPortStart(pAC, IoC, i);
+			}
+		}
+
+		SkRlmtCheckSwitch(pAC, IoC);
+
+		if (pAC->Rlmt.LinksUp >= 2) {
+			if (pAC->Rlmt.RlmtMode & SK_RLMT_CHECK_LOC_LINK) {
+
+				/* Build the check chain. */
+
+				SkRlmtBuildCheckChain(pAC);
+			}
+		}
+
+		/*
+		 * If the first link comes up, start the periodical
+		 * RLMT timeout.
+		 */
+
+		if (pAC->GIni.GIMacsFound > 1 && pAC->Rlmt.LinksUp == 1 &&
+			(pAC->Rlmt.RlmtMode & SK_RLMT_CHECK_OTHERS)) {
+			SkTimerStart(
+				pAC,
+				IoC,
+				&pAC->Rlmt.LocTimer,
+				pAC->Rlmt.TimeoutValue,
+				SKGE_RLMT,
+				SK_RLMT_TIM,
+				Para);
+		}
+
+		SkTimerStart(
+			pAC,
+			IoC,
+			&pRPort->UpTimer,
+			SK_RLMT_PORTUP_TIM_VAL,
+			SKGE_RLMT,
+			SK_RLMT_PORTUP_TIM,
+			Para);
+
+		/*
+		 * Later:
+		 * if (pAC->Rlmt.RlmtMode & SK_RLMT_CHECK_LOC_LINK) &&
+		 */
+
+		if ((pAC->Rlmt.RlmtMode & SK_RLMT_CHECK_LINK) &&
+			(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 (pAC->Rlmt.RlmtMode & SK_RLMT_CHECK_SEG) {
+			if ((Para2.pParaPtr =
+				SkRlmtBuildSpanningTreePacket(
+					pAC,
+					IoC,
+					Para.Para32[0])
+				) != NULL) {
+				
+				pAC->Rlmt.Port[Para.Para32[0]].RootIdSet =
+					SK_FALSE;
+				pAC->Rlmt.CheckingState |=
+					SK_RLMT_RCS_SEG |
+					SK_RLMT_RCS_REPORT_SEG;
+				
+				SkEventQueue(
+					pAC,
+					SKGE_DRV,
+					SK_DRV_RLMT_SEND,
+					Para2);
+
+				SkTimerStart(
+					pAC,
+					IoC,
+					&pAC->Rlmt.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 (%d) END.\n", Event))
+		break;
+
+	case SK_RLMT_PORTUP_TIM:	/* From RLMT via TIME. */
+		SK_DBG_MSG(
+			pAC,
+			SK_DBGMOD_RLMT,
+			SK_DBGCAT_CTRL,
+			("SK_RLMT_PORTUP_TIM Port %d Event (%d) BEGIN.\n", Para.Para32[0], Event))
+
+		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 (%d) EMPTY.\n",
+					Para.Para32[0],
+					Event))
+			break;
+		}
+
+		pRPort->PortDown = SK_FALSE;
+                pRPort->PortState = SK_RLMT_PS_UP;
+		pAC->Rlmt.PortsUp++;
+
+		if (pAC->Rlmt.RlmtState != SK_RLMT_RS_INIT) {
+			SkRlmtCheckSwitch(pAC, IoC);
+
+			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 (%d) END.\n", Event))
+		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. */
+		SK_DBG_MSG(
+			pAC,
+			SK_DBGMOD_RLMT,
+			SK_DBGCAT_CTRL,
+			("SK_RLMT_PORTDOWN* Port %d Event (%d) BEGIN.\n", Para.Para32[0], Event))
+
+		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))
+			break;
+		}
+		/* 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) {
+			pAC->Rlmt.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;
+#if 0
+		pRPort->RlmtChksPerTimeSlot = 0;
+		pRPort->RlmtAcksPerTimeSlot = 0;
+#endif	/* 0 */
+
+		/*
+		 * RA;:;: To be checked:
+		 * - actions at RLMT_STOP: We should not switch anymore.
+		 */
+
+		if (pAC->Rlmt.RlmtState != SK_RLMT_RS_INIT) {
+			if (Para.Para32[0] == pAC->Rlmt.MacActive) {
+
+				/* Active Port went down. */
+
+				SkRlmtCheckSwitch(pAC, IoC);
+			}
+		}
+
+		SK_DBG_MSG(
+			pAC,
+			SK_DBGMOD_RLMT,
+			SK_DBGCAT_CTRL,
+			("SK_RLMT_PORTDOWN* Event (%d) END.\n", Event))
+		break;
+
+	case SK_RLMT_LINK_DOWN:		/* From SIRQ. */
+		SK_DBG_MSG(
+			pAC,
+			SK_DBGMOD_RLMT,
+			SK_DBGCAT_CTRL,
+			("SK_RLMT_LINK_DOWN Port %d Event (%d) BEGIN.\n",
+				Para.Para32[0], Event))
+
+		if (!pAC->Rlmt.Port[Para.Para32[0]].LinkDown) {
+			pAC->Rlmt.LinksUp--;
+			pAC->Rlmt.Port[Para.Para32[0]].LinkDown = SK_TRUE;
+			pAC->Rlmt.Port[Para.Para32[0]].PortState =
+					SK_RLMT_PS_LINK_DOWN;
+			SK_HWAC_LINK_LED(
+				pAC,
+				IoC,
+				Para.Para32[0],
+				SK_LED_OFF);
+
+			if (pAC->Rlmt.RlmtMode & SK_RLMT_CHECK_LOC_LINK) {
+
+				/* Build the check chain. */
+
+				SkRlmtBuildCheckChain(pAC);
+			}
+
+			/* Ensure that port is marked down. */
+
+			(void)SkRlmtEvent(
+				pAC,
+				IoC,
+				SK_RLMT_PORTDOWN,
+				Para);
+		}
+
+		SK_DBG_MSG(
+			pAC,
+			SK_DBGMOD_RLMT,
+			SK_DBGCAT_CTRL,
+			("SK_RLMT_LINK_DOWN Event (%d) END.\n", Event))
+		break;
+
+	case SK_RLMT_PORT_ADDR:		/* From ADDR. */
+		SK_DBG_MSG(
+			pAC,
+			SK_DBGMOD_RLMT,
+			SK_DBGCAT_CTRL,
+			("SK_RLMT_PORT_ADDR Port %d Event (%d) BEGIN.\n", Para.Para32[0], Event))
+
+		/* 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 (%d) END.\n", Event))
+		break;
+
+	/* ----- RLMT events ----- */
+
+	case SK_RLMT_START:		/* From DRV. */
+		SK_DBG_MSG(
+			pAC,
+			SK_DBGMOD_RLMT,
+			SK_DBGCAT_CTRL,
+			("SK_RLMT_START Event (%d) BEGIN.\n", Event))
+
+		if (pAC->Rlmt.RlmtState != SK_RLMT_RS_INIT) {
+			SK_DBG_MSG(
+				pAC,
+				SK_DBGMOD_RLMT,
+				SK_DBGCAT_CTRL,
+				("SK_RLMT_START Event (%d) EMPTY.\n", Event))
+			break;
+		}
+
+		if (pAC->Rlmt.PrefPort >= (SK_U32)pAC->GIni.GIMacsFound) {
+			SK_ERR_LOG(
+				pAC,
+				SK_ERRCL_SW,
+				SKERR_RLMT_E009,
+				SKERR_RLMT_E009_MSG);
+
+			/* Change PrefPort to internal default. */
+
+			Para.Para32[0] = 0xFFFFFFFF;
+			(void)SkRlmtEvent(
+				pAC,
+				IoC,
+				SK_RLMT_PREFPORT_CHANGE,
+				Para);
+		}
+#if 0
+		if (pAC->GIni.GIMacsFound == 1 &&
+			pAC->Rlmt.RlmtMode != SK_RLMT_CHECK_LINK) {
+			Para.Para32[0] = SK_RLMT_CHECK_LINK;
+			(void)SkRlmtEvent(
+				pAC,
+				IoC,
+				SK_RLMT_MODE_CHANGE,
+				Para);
+		}
+#endif	/* 0 */
+		pAC->Rlmt.LinksUp = 0;
+		pAC->Rlmt.PortsUp = 0;
+		pAC->Rlmt.CheckingState = 0;
+		pAC->Rlmt.RlmtState = SK_RLMT_RS_NET_DOWN;
+
+		SkRlmtPortStart(pAC, IoC, pAC->Rlmt.PrefPort);
+
+		/* Start Timer (for first port only). */
+
+		Para2.Para32[0] = pAC->Rlmt.PrefPort;
+		SkTimerStart(
+			pAC,
+			IoC,
+			&pAC->Rlmt.Port[pAC->Rlmt.PrefPort].UpTimer,
+			SK_RLMT_PORTSTART_TIM_VAL,
+			SKGE_RLMT,
+			SK_RLMT_PORTSTART_TIM,
+			Para2);
+
+		SK_DBG_MSG(
+			pAC,
+			SK_DBGMOD_RLMT,
+			SK_DBGCAT_CTRL,
+			("SK_RLMT_START Event (%d) END.\n", Event))
+		break;
+
+	case SK_RLMT_STOP:		/* From DRV. */
+		SK_DBG_MSG(
+			pAC,
+			SK_DBGMOD_RLMT,
+			SK_DBGCAT_CTRL,
+			("SK_RLMT_STOP Event (%d) BEGIN.\n", Event))
+
+		if (pAC->Rlmt.RlmtState == SK_RLMT_RS_INIT) {
+			SK_DBG_MSG(
+				pAC,
+				SK_DBGMOD_RLMT,
+				SK_DBGCAT_CTRL,
+				("SK_RLMT_STOP Event (%d) EMPTY.\n", Event))
+			break;
+		}
+
+		/* Stop RLMT timers. */
+
+		SkTimerStop(pAC, IoC, &pAC->Rlmt.LocTimer); 
+		SkTimerStop(pAC, IoC, &pAC->Rlmt.SegTimer);
+
+		/* Stop Net. */
+
+		pAC->Rlmt.RlmtState = SK_RLMT_RS_INIT;
+		pAC->Rlmt.RootIdSet = SK_FALSE;
+		Para2.Para32[0] = SK_RLMT_NET_DOWN_FINAL;
+		SkEventQueue(pAC, SKGE_DRV, SK_DRV_NET_DOWN, Para2);
+
+		/* Stop ports. */
+
+		for (i = 0; i < (SK_U32)pAC->GIni.GIMacsFound; i++) {
+			if (pAC->Rlmt.Port[i].PortState != SK_RLMT_PS_INIT) {
+				SkTimerStop(
+					pAC,
+					IoC,
+					&pAC->Rlmt.Port[i].UpTimer);
+				SkTimerStop(
+					pAC,
+					IoC,
+					&pAC->Rlmt.Port[i].DownRxTimer);
+				SkTimerStop(
+					pAC,
+					IoC,
+					&pAC->Rlmt.Port[i].DownTxTimer);
+
+				pAC->Rlmt.Port[i].PortState = SK_RLMT_PS_INIT;
+				pAC->Rlmt.Port[i].RootIdSet = SK_FALSE;
+				pAC->Rlmt.Port[i].PortStarted = SK_FALSE;
+				Para2.Para32[0] = i;
+				SkEventQueue(
+					pAC,
+					SKGE_HWAC,
+					SK_HWEV_PORT_STOP,
+					Para2);
+			}
+		}
+
+		SK_DBG_MSG(
+			pAC,
+			SK_DBGMOD_RLMT,
+			SK_DBGCAT_CTRL,
+			("SK_RLMT_STOP Event (%d) END.\n", Event))
+		break;
+
+	case SK_RLMT_TIM:		/* From RLMT via TIME. */
+#if 0
+		SK_DBG_MSG(
+			pAC,
+			SK_DBGMOD_RLMT,
+			SK_DBGCAT_CTRL,
+			("SK_RLMT_TIM Event (%d) BEGIN.\n", Event))
+#endif	/* 0 */
+
+		if (!(pAC->Rlmt.RlmtMode & SK_RLMT_CHECK_OTHERS) ||
+			pAC->Rlmt.LinksUp == 0) {
+
+			/*
+			 * Mode changed or all links down:
+			 * No more link checking.
+			 */
+
+			break;
+		}
+
+#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 < (SK_U32)pAC->GIni.GIMacsFound; i++) {
+			pRPort = &pAC->Rlmt.Port[i];
+			if (!pRPort->LinkDown) {
+				Timeout = SkRlmtCheckPort(pAC, IoC, i);
+				if (Timeout < NewTimeout) {
+					NewTimeout = Timeout;
+				}
+
+				/*
+				 * This counter 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;
+#if 0
+				pRPort->RlmtChksPerTimeSlot = 0;
+				pRPort->RlmtAcksPerTimeSlot = 0;
+#endif	/* 0 */
+			}
+		}
+		pAC->Rlmt.TimeoutValue = NewTimeout;
+
+		if (pAC->Rlmt.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 < (SK_U32)pAC->GIni.GIMacsFound; i++) {
+				pRPort = &pAC->Rlmt.Port[i];
+				if (!pRPort->LinkDown) {	/* !PortDown? */
+					SkRlmtSend(pAC, IoC, i);
+				}
+			}
+		}
+
+		SkTimerStart(
+			pAC,
+			IoC,
+			&pAC->Rlmt.LocTimer,
+			pAC->Rlmt.TimeoutValue,
+			SKGE_RLMT,
+			SK_RLMT_TIM,
+			Para);
+
+		if (pAC->Rlmt.LinksUp > 1 &&
+			(pAC->Rlmt.RlmtMode & SK_RLMT_CHECK_SEG) &&
+			(pAC->Rlmt.CheckingState & SK_RLMT_RCS_START_SEG)) {
+			SkTimerStart(
+				pAC,
+				IoC,
+				&pAC->Rlmt.SegTimer,
+				SK_RLMT_SEG_TO_VAL,
+				SKGE_RLMT,
+				SK_RLMT_SEG_TIM,
+				Para);
+			pAC->Rlmt.CheckingState &=
+				~SK_RLMT_RCS_START_SEG;
+			pAC->Rlmt.CheckingState |=
+				SK_RLMT_RCS_SEG | SK_RLMT_RCS_REPORT_SEG;
+		}
+
+#if 0
+		SK_DBG_MSG(
+			pAC,
+			SK_DBGMOD_RLMT,
+			SK_DBGCAT_CTRL,
+			("SK_RLMT_TIM Event (%d) END.\n", Event))
+#endif	/* 0 */
+		break;
+
+	case SK_RLMT_SEG_TIM:
+		SK_DBG_MSG(
+			pAC,
+			SK_DBGMOD_RLMT,
+			SK_DBGCAT_CTRL,
+			("SK_RLMT_SEG_TIM Event (%d) BEGIN.\n", Event))
+
+#ifdef DEBUG
+		for (i = 0; i < (SK_U32)pAC->GIni.GIMacsFound; i++) {
+			SK_U8		InAddr8[6];
+			SK_U16		*InAddr;
+			SK_ADDR_PORT	*pAPort;
+
+			InAddr = (SK_U16 *)&InAddr8[0];
+			pAPort = &pAC->Addr.Port[i];
+			for (j = 0;
+				j < pAPort->NextExactMatchRlmt;
+				j++) {
+
+				/* Get exact match address j from port i. */
+
+				XM_INADDR(IoC, i, XM_EXM(j), 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",
+						j,
+       						i,
+       						InAddr8[0],
+       						InAddr8[1],
+       						InAddr8[2],
+       						InAddr8[3],
+       						InAddr8[4],
+       						InAddr8[5],
+						pAPort->Exact[j].a[0],
+						pAPort->Exact[j].a[1],
+						pAPort->Exact[j].a[2],
+						pAPort->Exact[j].a[3],
+						pAPort->Exact[j].a[4],
+						pAPort->Exact[j].a[5]))
+			}
+		}
+#endif	/* DEBUG */
+				   
+		pAC->Rlmt.CheckingState &= ~SK_RLMT_RCS_SEG;
+
+		SkRlmtCheckSeg(pAC, IoC);
+
+		SK_DBG_MSG(
+			pAC,
+			SK_DBGMOD_RLMT,
+			SK_DBGCAT_CTRL,
+			("SK_RLMT_SEG_TIM Event (%d) END.\n", Event))
+		break;
+
+	case SK_RLMT_PACKET_RECEIVED:	/* From DRV. */
+		SK_DBG_MSG(
+			pAC,
+			SK_DBGMOD_RLMT,
+			SK_DBGCAT_CTRL,
+			("SK_RLMT_PACKET_RECEIVED Event (%d) BEGIN.\n", Event))
+
+		/* 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;
+			SkRlmtPacketReceive(pAC, IoC, pMb);
+		}
+
+		SK_DBG_MSG(
+			pAC,
+			SK_DBGMOD_RLMT,
+			SK_DBGCAT_CTRL,
+			("SK_RLMT_PACKET_RECEIVED Event (%d) END.\n", Event))
+		break;
+
+	case SK_RLMT_STATS_CLEAR:	/* From PNMI. */
+		SK_DBG_MSG(
+			pAC,
+			SK_DBGMOD_RLMT,
+			SK_DBGCAT_CTRL,
+			("SK_RLMT_STATS_CLEAR Event (%d) BEGIN.\n", Event))
+
+		/* Clear statistics for virtual and physical ports. */
+
+		for (i = 0; i < (SK_U32)pAC->GIni.GIMacsFound; i++) {
+			pAC->Rlmt.Port[i].TxHelloCts = 0;
+			pAC->Rlmt.Port[i].RxHelloCts = 0;
+			pAC->Rlmt.Port[i].TxSpHelloReqCts = 0;
+			pAC->Rlmt.Port[i].RxSpHelloCts = 0;
+		}
+
+		SK_DBG_MSG(
+			pAC,
+			SK_DBGMOD_RLMT,
+			SK_DBGCAT_CTRL,
+			("SK_RLMT_STATS_CLEAR Event (%d) END.\n", Event))
+		break;
+
+	case SK_RLMT_STATS_UPDATE:	/* From PNMI. */
+#if 0
+		SK_DBG_MSG(
+			pAC,
+			SK_DBGMOD_RLMT,
+			SK_DBGCAT_CTRL,
+			("SK_RLMT_STATS_UPDATE Event (%d) BEGIN.\n", Event))
+
+		/* Update statistics. */
+
+		/* Currently always up-to-date. */
+
+		SK_DBG_MSG(
+			pAC,
+			SK_DBGMOD_RLMT,
+			SK_DBGCAT_CTRL,
+			("SK_RLMT_STATS_UPDATE Event (%d) END.\n", Event))
+#endif	/* 0 */
+		break;
+
+	case SK_RLMT_PREFPORT_CHANGE:	/* From PNMI. */
+		SK_DBG_MSG(
+			pAC,
+			SK_DBGMOD_RLMT,
+			SK_DBGCAT_CTRL,
+			("SK_RLMT_PREFPORT_CHANGE to Port %d Event (%d) BEGIN.\n", Para.Para32[0], Event))
+
+		/* 0xFFFFFFFF == auto-mode. */
+
+		if (Para.Para32[0] == 0xFFFFFFFF) {
+			pAC->Rlmt.PrefPort = SK_RLMT_DEF_PREF_PORT;
+		}
+		else {
+			if (Para.Para32[0] >= (SK_U32)pAC->GIni.GIMacsFound) {
+				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 (%d) EMPTY.\n", Event))
+				break;
+			}
+
+			pAC->Rlmt.PrefPort = Para.Para32[0];
+		}
+
+		pAC->Rlmt.MacPreferred = Para.Para32[0];
+
+		SkRlmtCheckSwitch(pAC, IoC);
+
+		SK_DBG_MSG(
+			pAC,
+			SK_DBGMOD_RLMT,
+			SK_DBGCAT_CTRL,
+			("SK_RLMT_PREFPORT_CHANGE Event (%d) END.\n", Event))
+		break;
+
+	case SK_RLMT_MODE_CHANGE:	/* From PNMI. */
+		SK_DBG_MSG(
+			pAC,
+			SK_DBGMOD_RLMT,
+			SK_DBGCAT_CTRL,
+			("SK_RLMT_MODE_CHANGE Event (%d) BEGIN.\n", Event))
+
+		if (pAC->GIni.GIMacsFound < 2) {
+			pAC->Rlmt.RlmtMode = SK_RLMT_CHECK_LINK;
+			SK_DBG_MSG(
+				pAC,
+				SK_DBGMOD_RLMT,
+				SK_DBGCAT_CTRL,
+				("Forced RLMT mode to CLS on single link adapter.\n"))
+			SK_DBG_MSG(
+				pAC,
+				SK_DBGMOD_RLMT,
+				SK_DBGCAT_CTRL,
+				("SK_RLMT_MODE_CHANGE Event (%d) EMPTY.\n",
+					Event))
+			break;
+		}
+
+		/* Update RLMT mode. */
+
+		PrevRlmtMode = pAC->Rlmt.RlmtMode;
+		pAC->Rlmt.RlmtMode = Para.Para32[0] | SK_RLMT_CHECK_LINK;
+
+		SK_DBG_MSG(
+			pAC,
+			SK_DBGMOD_RLMT,
+			SK_DBGCAT_CTRL,
+			("RLMT: Changed Mode to %X.\n", pAC->Rlmt.RlmtMode))
+
+		if ((PrevRlmtMode & SK_RLMT_CHECK_LOC_LINK) !=
+			(pAC->Rlmt.RlmtMode & SK_RLMT_CHECK_LOC_LINK)) {
+			if (!(PrevRlmtMode & SK_RLMT_CHECK_OTHERS) &&
+				pAC->GIni.GIMacsFound > 1 &&
+				pAC->Rlmt.PortsUp == 1) {
+				SkTimerStart(
+					pAC,
+					IoC,
+					&pAC->Rlmt.LocTimer,
+					pAC->Rlmt.TimeoutValue,
+					SKGE_RLMT,
+					SK_RLMT_TIM,
+					Para);
+			}
+		}
+
+		if ((PrevRlmtMode & SK_RLMT_CHECK_SEG) !=
+			(pAC->Rlmt.RlmtMode & SK_RLMT_CHECK_SEG)) {
+
+			for (i = 0; i < (SK_U32)pAC->GIni.GIMacsFound; i++) {
+				(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.RlmtMode & SK_RLMT_CHECK_SEG) {
+					/* Add BPDU MC address. */
+
+					(void)SkAddrMcAdd(
+						pAC,
+						IoC,
+						i,
+						&BridgeMcAddr,
+						SK_ADDR_PERMANENT);
+
+					if (pAC->Rlmt.RlmtState !=
+						SK_RLMT_RS_INIT) {
+						if (!pAC->Rlmt.Port[i].LinkDown &&
+							(Para2.pParaPtr =
+							SkRlmtBuildSpanningTreePacket(
+								pAC,
+								IoC,
+								i)
+							) != NULL) {
+							
+							pAC->Rlmt.Port[i
+								].RootIdSet =
+								SK_FALSE;
+
+							SkEventQueue(
+								pAC,
+								SKGE_DRV,
+								SK_DRV_RLMT_SEND,
+								Para2);
+						}
+					}
+				}
+
+				(void)SkAddrMcUpdate(pAC, IoC, i);
+			}
+
+			if (pAC->Rlmt.RlmtMode & SK_RLMT_CHECK_SEG) {
+				SkTimerStart(
+					pAC,
+					IoC,
+					&pAC->Rlmt.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_MODE_CHANGE Event (%d) END.\n", Event))
+		break;
+
+	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;
+	}
+
+	return (0);       
+}	/* SkRlmtEvent */
+
+#ifdef __cplusplus
+}
+#endif	/* __cplusplus */

FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen (who was at: slshen@lbl.gov)