This commit was manufactured by cvs2svn to create tag 'V1_1_8_16mdk'.V1_1_8_16mdk

13 files changed, 0 insertions, 5261 deletions

diff --git a/mdk-stage1/ppp/solaris/Makedefs b/mdk-stage1/ppp/solaris/Makedefs
deleted file mode 100644
index 81db8ab2e..000000000
--- a/mdk-stage1/ppp/solaris/Makedefs
+++ /dev/null
@@ -1,16 +0,0 @@
-#
-# defines common to several Makefiles
-#
-
-INSTALL= /usr/sbin/install
-
-BINDIR = /usr/local/bin
-MANDIR = /usr/local/man
-ETCDIR = /etc/ppp
-
-COPTS = -O -Xa
-
-# For compiling with gcc, comment out the COPTS definition above and
-# uncomment the next 2 definitions.
-#CC = gcc
-#COPTS = -O2
diff --git a/mdk-stage1/ppp/solaris/Makedefs.sol2 b/mdk-stage1/ppp/solaris/Makedefs.sol2
deleted file mode 100644
index 1282c6e74..000000000
--- a/mdk-stage1/ppp/solaris/Makedefs.sol2
+++ /dev/null
@@ -1,59 +0,0 @@
-#
-# Generic make definitions for Solaris 2
-#
-# $Id$
-#
-
-include ../solaris/Makedefs
-
-CPPFLAGS	= -D_KERNEL -DSVR4 -DSOL2 -DPRIOQ -DDEBUG -I../include
-CFLAGS		= $(CPPFLAGS) $(COPTS)
-
-# lint-specific variables
-LINT            = lint
-LINT_OPT_32     =
-LINT_OPT_64     = -Xarch=v9 -errchk=longptr64
-
-LINT_32     	=
-LINT_32     	+= -erroff=E_BAD_PTR_CAST_ALIGN
-LINT_32     	+= -erroff=E_SUPPRESSION_DIRECTIVE_UNUSED
-LINT_32     	+= -erroff=E_SUSPICIOUS_COMPARISON
-LINT_32     	+= -erroff=E_CAST_UINT_TO_SIGNED_INT
-LINT_32     	+= -erroff=E_PASS_UINT_TO_SIGNED_INT
-LINT_32     	+= -erroff=E_INVALID_ANNOTATION_NAME
-LINT_32     	+= -erroff=E_FUNC_ARG_UNUSED
-# This might be needed, but zlib.c and vjcompress.c will squawk 
-# when not ignored
-LINT_32		+= -erroff=E_CASE_FALLTHRU
-LINT_32		+= -erroff=E_RET_INT_IMPLICITLY
-LINT_32		+= -erroff=E_FUNC_NO_RET_VAL
-# Some STREAMS macros will be noisy too when this isn't ignored
-LINT_32		+= -erroff=E_CONSTANT_CONDITION
-LINT_32		+= -erroff=E_CONST_EXPR
-
-# Extra noise suppressant for 64-bit
-EXTRA_OFF 	=
-EXTRA_OFF 	+= -erroff=E_CAST_INT_TO_SMALL_INT
-EXTRA_OFF 	+= -erroff=E_CAST_INT_CONST_TO_SMALL_INT
-EXTRA_OFF 	+= -erroff=E_CAST_TO_PTR_FROM_INT
-EXTRA_OFF 	+= -erroff=E_ASSIGN_INT_TO_SMALL_INT
-EXTRA_OFF 	+= -erroff=E_ASSIGN_INT_FROM_BIG_CONST
-EXTRA_OFF 	+= -erroff=E_CONST_PROMOTED_UNSIGNED_LL
-EXTRA_OFF 	+= -erroff=E_CONST_PROMOTED_LONG_LONG
-EXTRA_OFF 	+= -erroff=E_CONST_TRUNCATED_BY_ASSIGN
-EXTRA_OFF 	+= -erroff=E_PASS_INT_FROM_BIG_CONST
-EXTRA_OFF 	+= -erroff=E_COMP_INT_WITH_LARGE_INT
-EXTRA_OFF 	+= -erroff=E_ASSIGN_UINT_TO_SIGNED_INT
-EXTRA_OFF 	+= -erroff=E_ASSIGN_NARROW_CONV
-EXTRA_OFF 	+= -erroff=E_PASS_INT_TO_SMALL_INT
-EXTRA_OFF 	+= -erroff=E_PTR_CONV_LOSES_BITS
-
-LINT_64     	= $(LINT_32)
-LINT_64     	+= $(EXTRA_OFF)
-
-LINTFLAGS64     = -Xa -nsxmuF -errtags=yes $(LINT_OPT_64) $(LINT_64)
-LINT64          = $(LINT) -c $(LINTFLAGS64) $(CPPFLAGS)
-
-LINTFLAGS32     = -Xa -nsxmuF -errtags=yes $(LINT_OPT_32) $(LINT_32)
-LINT32          = $(LINT) -c $(LINTFLAGS32) $(CPPFLAGS)
-
diff --git a/mdk-stage1/ppp/solaris/Makefile.sol2 b/mdk-stage1/ppp/solaris/Makefile.sol2
deleted file mode 100644
index 78628847b..000000000
--- a/mdk-stage1/ppp/solaris/Makefile.sol2
+++ /dev/null
@@ -1,66 +0,0 @@
-#
-# Makefile for STREAMS modules for Solaris 2.
-#
-# $Id$
-#
-
-include Makedefs.sol2
-
-COPTS += -xO2 -xspace -W0,-Lt
-
-COMP_OBJS = ppp_comp.o bsd-comp.o deflate.o zlib.o vjcompress.o \
-	ppp_comp_mod.o
-
-all:	ppp ppp_ahdl ppp_comp
-
-ppp:	ppp.o ppp_mod.o
-	ld -r -o $@ ppp.o ppp_mod.o
-	chmod +x $@
-
-ppp_ahdl: ppp_ahdlc.o ppp_ahdlc_mod.o
-	ld -r -o $@ ppp_ahdlc.o ppp_ahdlc_mod.o
-	chmod +x $@
-
-ppp_comp: $(COMP_OBJS)
-	ld -r -o $@ $(COMP_OBJS)
-	chmod +x $@
-
-bsd-comp.o:	../modules/bsd-comp.c
-	$(CC) $(CFLAGS) -c $?
-deflate.o:	../modules/deflate.c
-	$(CC) $(CFLAGS) -c $?
-ppp.o:	ppp.c
-	$(CC) $(CFLAGS) -c $?
-ppp_mod.o:	ppp_mod.c
-	$(CC) $(CFLAGS) -c $?
-ppp_ahdlc_mod.o: ppp_ahdlc_mod.c
-	$(CC) $(CFLAGS) -c $?
-ppp_ahdlc.o: ppp_ahdlc.c
-	$(CC) $(CFLAGS) -c $?
-ppp_comp.o: ppp_comp.c
-	$(CC) $(CFLAGS) -c $?
-ppp_comp_mod.o:	ppp_comp_mod.c
-	$(CC) $(CFLAGS) -c $?
-vjcompress.o:	../modules/vjcompress.c
-	$(CC) $(CFLAGS) -c $?
-zlib.o:	../common/zlib.c
-	$(CC) $(CFLAGS) -c $?
-
-install:
-	cp ppp ppp.conf /kernel/drv
-	cp ppp_comp ppp_ahdl /kernel/strmod
-	if grep clone:ppp /etc/minor_perm; then :; else \
-	  echo clone:ppp 0644 root sys >>/etc/minor_perm; fi
-	/usr/sbin/rem_drv ppp 2>/dev/null || true
-	/usr/sbin/add_drv ppp
-
-SRCS	= ppp.c ppp_mod.c ppp_ahdlc.c ppp_ahdlc_mod.c \
-	ppp_comp.c ../modules/bsd-comp.c ../modules/deflate.c \
-	../common/zlib.c ../modules/vjcompress.c ppp_comp_mod.c
-
-lint:
-	$(LINT32) $(SRCS)
-
-clean:
-	rm -f ppp ppp_comp ppp_ahdl *.o *~ core
-	rm -f *.ln
diff --git a/mdk-stage1/ppp/solaris/Makefile.sol2-64 b/mdk-stage1/ppp/solaris/Makefile.sol2-64
deleted file mode 100644
index 63e75fc54..000000000
--- a/mdk-stage1/ppp/solaris/Makefile.sol2-64
+++ /dev/null
@@ -1,85 +0,0 @@
-#
-# Makefile for 64-bit STREAMS modules for Solaris 2.
-#
-# $Id$
-#
-
-include Makedefs.sol2
-
-# Sun's cc flag for LP64 compilation / linkage
-COPTS 		+= -xchip=ultra -xarch=v9 -Wc,-xcode=abs32 -Wc,-Qiselect-regsym=0 -xO3 -xspace -W0,-Lt
-
-# subdirectory where 64-bit objects / binaries will be placed
-LP64DIR		= sparcv9
-
-# Name of legacy Makefile (for 32-bit binaries)
-STD_MAKE	= Makefile.sol2
-
-COMP_OBJS	= $(LP64DIR)/ppp_comp.o $(LP64DIR)/bsd-comp.o \
-		$(LP64DIR)/deflate.o $(LP64DIR)/zlib.o $(LP64DIR)/vjcompress.o \
-		$(LP64DIR)/ppp_comp_mod.o
-
-all:	std_objs $(LP64DIR) ppp ppp_ahdl ppp_comp
-
-std_objs:
-	$(MAKE) -f $(STD_MAKE) all
-
-ppp:	$(LP64DIR)/ppp.o $(LP64DIR)/ppp_mod.o
-	ld -r -o $(LP64DIR)/$@ $(LP64DIR)/ppp.o $(LP64DIR)/ppp_mod.o
-	chmod +x $(LP64DIR)/$@
-
-ppp_ahdl: $(LP64DIR)/ppp_ahdlc.o $(LP64DIR)/ppp_ahdlc_mod.o
-	ld -r -o $(LP64DIR)/$@ $(LP64DIR)/ppp_ahdlc.o $(LP64DIR)/ppp_ahdlc_mod.o
-	chmod +x $(LP64DIR)/$@
-
-ppp_comp: $(COMP_OBJS)
-	ld -r -o $(LP64DIR)/$@ $(COMP_OBJS)
-	chmod +x $(LP64DIR)/$@
-
-$(LP64DIR)/bsd-comp.o: ../modules/bsd-comp.c
-	$(CC) $(CFLAGS) -c $? -o $@
-$(LP64DIR)/deflate.o: ../modules/deflate.c
-	$(CC) $(CFLAGS) -c $? -o $@
-$(LP64DIR)/ppp.o:	ppp.c
-	$(CC) $(CFLAGS) -c $? -o $@
-$(LP64DIR)/ppp_mod.o:	ppp_mod.c
-	$(CC) $(CFLAGS) -c $? -o $@
-$(LP64DIR)/ppp_ahdlc_mod.o: ppp_ahdlc_mod.c
-	$(CC) $(CFLAGS) -c $? -o $@
-$(LP64DIR)/ppp_ahdlc.o: ppp_ahdlc.c
-	$(CC) $(CFLAGS) -c $? -o $@
-$(LP64DIR)/ppp_comp.o: ppp_comp.c
-	$(CC) $(CFLAGS) -c $? -o $@
-$(LP64DIR)/ppp_comp_mod.o: ppp_comp_mod.c
-	$(CC) $(CFLAGS) -c $? -o $@
-$(LP64DIR)/vjcompress.o: ../modules/vjcompress.c
-	$(CC) $(CFLAGS) -c $? -o $@
-$(LP64DIR)/zlib.o:	../common/zlib.c
-	$(CC) $(CFLAGS) -c $? -o $@
-
-$(LP64DIR):
-	mkdir -m 755 -p $@
-
-install:
-	cp ppp ppp.conf /kernel/drv
-	cp ppp_comp ppp_ahdl /kernel/strmod
-	cp $(LP64DIR)/ppp /kernel/drv/$(LP64DIR)
-	cp $(LP64DIR)/ppp_comp $(LP64DIR)/ppp_ahdl /kernel/strmod/$(LP64DIR)
-	if grep clone:ppp /etc/minor_perm; then :; else \
-	  echo clone:ppp 0644 root sys >>/etc/minor_perm; fi
-	/usr/sbin/rem_drv ppp 2>/dev/null || true
-	/usr/sbin/add_drv ppp
-
-SRCS	= ppp.c ppp_mod.c ppp_ahdlc.c ppp_ahdlc_mod.c \
-	ppp_comp.c ../modules/bsd-comp.c ../modules/deflate.c \
-	../common/zlib.c ../modules/vjcompress.c ppp_comp_mod.c
-
-lint:
-	$(LINT64) $(SRCS)
-
-lint-32:
-	$(LINT32) $(SRCS)
-
-clean:
-	$(MAKE) -f $(STD_MAKE) clean
-	rm -f $(LP64DIR)/ppp $(LP64DIR)/ppp_comp $(LP64DIR)/ppp_ahdl $(LP64DIR)/*.o $(LP64DIR)/*~ $(LP64DIR)/core
diff --git a/mdk-stage1/ppp/solaris/Makefile.top b/mdk-stage1/ppp/solaris/Makefile.top
deleted file mode 100644
index f1200b852..000000000
--- a/mdk-stage1/ppp/solaris/Makefile.top
+++ /dev/null
@@ -1,50 +0,0 @@
-#
-# ppp top level makefile for SVR4 and Solaris 2
-#
-# $Id$
-#
-
-include solaris/Makedefs
-
-all:
-	cd chat; $(MAKE) all
-	cd pppd; $(MAKE) all
-	cd pppstats; $(MAKE) all
-	cd pppdump; $(MAKE) all
-	cd solaris; $(MAKE) all
-
-install: $(BINDIR) $(MANDIR)/man8 install-progs install-etcppp
-
-install-progs:
-	cd chat; $(MAKE) install
-	cd pppd; $(MAKE) install
-	cd pppstats; $(MAKE) install
-	cd pppdump; $(MAKE) install
-	cd solaris; $(MAKE) install
-
-install-etcppp: $(ETCDIR) $(ETCDIR)/options $(ETCDIR)/pap-secrets \
-	$(ETCDIR)/chap-secrets
-
-$(ETCDIR)/options:
-	cp etc.ppp/options $@
-	chmod go-w $@
-$(ETCDIR)/pap-secrets:
-	$(INSTALL) -f $(ETCDIR) -m 600 etc.ppp/pap-secrets
-$(ETCDIR)/chap-secrets:
-	$(INSTALL) -f $(ETCDIR) -m 600 etc.ppp/chap-secrets
-
-$(BINDIR):
-	mkdir -m 755 -p $@
-$(MANDIR)/man8:
-	mkdir -m 755 -p $@
-$(ETCDIR):
-	mkdir -m 755 -p $@
-
-clean:
-	rm -f *~
-	cd chat; $(MAKE) clean
-	cd pppd; $(MAKE) clean
-	cd pppstats; $(MAKE) clean
-	cd pppdump; $(MAKE) clean
-	cd solaris; $(MAKE) clean
-
diff --git a/mdk-stage1/ppp/solaris/ppp.c b/mdk-stage1/ppp/solaris/ppp.c
deleted file mode 100644
index 44bf08dff..000000000
--- a/mdk-stage1/ppp/solaris/ppp.c
+++ /dev/null
@@ -1,2486 +0,0 @@
-/*
- * ppp.c - STREAMS multiplexing pseudo-device driver for PPP.
- *
- * Copyright (c) 1994 The Australian National University.
- * All rights reserved.
- *
- * Permission to use, copy, modify, and distribute this software and its
- * documentation is hereby granted, provided that the above copyright
- * notice appears in all copies.  This software is provided without any
- * warranty, express or implied. The Australian National University
- * makes no representations about the suitability of this software for
- * any purpose.
- *
- * IN NO EVENT SHALL THE AUSTRALIAN NATIONAL UNIVERSITY BE LIABLE TO ANY
- * PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
- * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF
- * THE AUSTRALIAN NATIONAL UNIVERSITY HAS BEEN ADVISED OF THE POSSIBILITY
- * OF SUCH DAMAGE.
- *
- * THE AUSTRALIAN NATIONAL UNIVERSITY SPECIFICALLY DISCLAIMS ANY WARRANTIES,
- * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
- * AND FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
- * ON AN "AS IS" BASIS, AND THE AUSTRALIAN NATIONAL UNIVERSITY HAS NO
- * OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS,
- * OR MODIFICATIONS.
- *
- * $Id$
- */
-
-/*
- * This file is used under Solaris 2, SVR4, SunOS 4, and Digital UNIX.
- */
-
-#include <sys/types.h>
-#include <sys/param.h>
-#include <sys/stat.h>
-#include <sys/stream.h>
-#include <sys/stropts.h>
-#include <sys/errno.h>
-#ifdef __osf__
-#include <sys/ioctl.h>
-#include <sys/cmn_err.h>
-#define queclass(mp)	((mp)->b_band & QPCTL)
-#else
-#include <sys/ioccom.h>
-#endif
-#include <sys/time.h>
-#ifdef SVR4
-#include <sys/cmn_err.h>
-#include <sys/conf.h>
-#include <sys/dlpi.h>
-#include <sys/ddi.h>
-#ifdef SOL2
-#include <sys/ksynch.h>
-#include <sys/kstat.h>
-#include <sys/sunddi.h>
-#include <sys/ethernet.h>
-#else
-#include <sys/socket.h>
-#include <sys/sockio.h>
-#include <net/if.h>
-#include <netinet/in.h>
-#endif /* SOL2 */
-#else /* not SVR4 */
-#include <sys/user.h>
-#endif /* SVR4 */
-#include <net/ppp_defs.h>
-#include <net/pppio.h>
-#include "ppp_mod.h"
-
-/*
- * Modifications marked with #ifdef PRIOQ are for priority queueing of
- * interactive traffic, and are due to Marko Zec <zec@japa.tel.fer.hr>.
- */
-#ifdef PRIOQ
-#endif	/* PRIOQ */
-
-#include <netinet/in.h>	/* leave this outside of PRIOQ for htons */
-
-#ifdef __STDC__
-#define __P(x)	x
-#else
-#define __P(x)	()
-#endif
-
-/*
- * The IP module may use this SAP value for IP packets.
- */
-#ifndef ETHERTYPE_IP
-#define ETHERTYPE_IP	0x800
-#endif
-
-#if !defined(ETHERTYPE_IPV6) 
-#define ETHERTYPE_IPV6	0x86dd
-#endif /* !defined(ETHERTYPE_IPV6) */
-
-#if !defined(ETHERTYPE_ALLSAP) && defined(SOL2)
-#define ETHERTYPE_ALLSAP   0
-#endif /* !defined(ETHERTYPE_ALLSAP) && defined(SOL2) */
-
-#if !defined(PPP_ALLSAP) && defined(SOL2)
-#define PPP_ALLSAP  PPP_ALLSTATIONS
-#endif /* !defined(PPP_ALLSAP) && defined(SOL2) */
-
-extern time_t time;
-
-#ifdef SOL2
-/*
- * We use this reader-writer lock to ensure that the lower streams
- * stay connected to the upper streams while the lower-side put and
- * service procedures are running.  Essentially it is an existence
- * lock for the upper stream associated with each lower stream.
- */
-krwlock_t ppp_lower_lock;
-#define LOCK_LOWER_W	rw_enter(&ppp_lower_lock, RW_WRITER)
-#define LOCK_LOWER_R	rw_enter(&ppp_lower_lock, RW_READER)
-#define TRYLOCK_LOWER_R	rw_tryenter(&ppp_lower_lock, RW_READER)
-#define UNLOCK_LOWER	rw_exit(&ppp_lower_lock)
-
-#define MT_ENTER(x)	mutex_enter(x)
-#define MT_EXIT(x)	mutex_exit(x)
-
-/*
- * Notes on multithreaded implementation for Solaris 2:
- *
- * We use an inner perimeter around each queue pair and an outer
- * perimeter around the whole driver.  The inner perimeter is
- * entered exclusively for all entry points (open, close, put,
- * service).  The outer perimeter is entered exclusively for open
- * and close and shared for put and service.  This is all done for
- * us by the streams framework.
- *
- * I used to think that the perimeters were entered for the lower
- * streams' put and service routines as well as for the upper streams'.
- * Because of problems experienced by people, and after reading the
- * documentation more closely, I now don't think that is true.  So we
- * now use ppp_lower_lock to give us an existence guarantee on the
- * upper stream controlling each lower stream.
- *
- * Shared entry to the outer perimeter protects the existence of all
- * the upper streams and their upperstr_t structures, and guarantees
- * that the following fields of any upperstr_t won't change:
- * nextmn, next, nextppa.  It guarantees that the lowerq field of an
- * upperstr_t won't go from non-zero to zero, that the global `ppas'
- * won't change and that the no lower stream will get unlinked.
- *
- * Shared (reader) access to ppa_lower_lock guarantees that no lower
- * stream will be unlinked and that the lowerq field of all upperstr_t
- * structures won't change.
- */
-
-#else /* SOL2 */
-#define LOCK_LOWER_W	0
-#define LOCK_LOWER_R	0
-#define TRYLOCK_LOWER_R	1
-#define UNLOCK_LOWER	0
-#define MT_ENTER(x)	0
-#define MT_EXIT(x)	0
-
-#endif /* SOL2 */
-
-/*
- * Private information; one per upper stream.
- */
-typedef struct upperstr {
-    minor_t mn;			/* minor device number */
-    struct upperstr *nextmn;	/* next minor device */
-    queue_t *q;			/* read q associated with this upper stream */
-    int flags;			/* flag bits, see below */
-    int state;			/* current DLPI state */
-    int sap;			/* service access point */
-    int req_sap;		/* which SAP the DLPI client requested */
-    struct upperstr *ppa;	/* control stream for our ppa */
-    struct upperstr *next;	/* next stream for this ppa */
-    uint ioc_id;		/* last ioctl ID for this stream */
-    enum NPmode npmode;		/* what to do with packets on this SAP */
-    unsigned char rblocked;	/* flow control has blocked upper read strm */
-	/* N.B. rblocked is only changed by control stream's put/srv procs */
-    /*
-     * There is exactly one control stream for each PPA.
-     * The following fields are only used for control streams.
-     */
-    int ppa_id;
-    queue_t *lowerq;		/* write queue attached below this PPA */
-    struct upperstr *nextppa;	/* next control stream */
-    int mru;
-    int mtu;
-    struct pppstat stats;	/* statistics */
-    time_t last_sent;		/* time last NP packet sent */
-    time_t last_recv;		/* time last NP packet rcvd */
-#ifdef SOL2
-    kmutex_t stats_lock;	/* lock for stats updates */
-    kstat_t *kstats;		/* stats for netstat */
-#endif /* SOL2 */
-#ifdef LACHTCP
-    int ifflags;
-    char ifname[IFNAMSIZ];
-    struct ifstats ifstats;
-#endif /* LACHTCP */
-} upperstr_t;
-
-/* Values for flags */
-#define US_PRIV		1	/* stream was opened by superuser */
-#define US_CONTROL	2	/* stream is a control stream */
-#define US_BLOCKED	4	/* flow ctrl has blocked lower write stream */
-#define US_LASTMOD	8	/* no PPP modules below us */
-#define US_DBGLOG	0x10	/* log various occurrences */
-#define US_RBLOCKED	0x20	/* flow ctrl has blocked upper read stream */
-
-#if defined(SOL2)
-#if DL_CURRENT_VERSION >= 2
-#define US_PROMISC	0x40	/* stream is promiscuous */
-#endif /* DL_CURRENT_VERSION >= 2 */
-#define US_RAWDATA	0x80	/* raw M_DATA, no DLPI header */
-#endif /* defined(SOL2) */
-
-#ifdef PRIOQ
-static u_char max_band=0;
-static u_char def_band=0;
-
-#define IPPORT_DEFAULT		65535
-
-/*
- * Port priority table
- * Highest priority ports are listed first, lowest are listed last.
- * ICMP & packets using unlisted ports will be treated as "default".
- * If IPPORT_DEFAULT is not listed here, "default" packets will be 
- * assigned lowest priority.
- * Each line should be terminated with "0".
- * Line containing only "0" marks the end of the list.
- */
-
-static u_short prioq_table[]= {
-    113, 53, 0,
-    22, 23, 513, 517, 518, 0,
-    514, 21, 79, 111, 0,
-    25, 109, 110, 0,
-    IPPORT_DEFAULT, 0,
-    20, 70, 80, 8001, 8008, 8080, 0, /* 8001,8008,8080 - common proxy ports */
-0 };
-
-#endif	/* PRIOQ */
-
-
-static upperstr_t *minor_devs = NULL;
-static upperstr_t *ppas = NULL;
-
-#ifdef SVR4
-static int pppopen __P((queue_t *, dev_t *, int, int, cred_t *));
-static int pppclose __P((queue_t *, int, cred_t *));
-#else
-static int pppopen __P((queue_t *, int, int, int));
-static int pppclose __P((queue_t *, int));
-#endif /* SVR4 */
-static int pppurput __P((queue_t *, mblk_t *));
-static int pppuwput __P((queue_t *, mblk_t *));
-static int pppursrv __P((queue_t *));
-static int pppuwsrv __P((queue_t *));
-static int ppplrput __P((queue_t *, mblk_t *));
-static int ppplwput __P((queue_t *, mblk_t *));
-static int ppplrsrv __P((queue_t *));
-static int ppplwsrv __P((queue_t *));
-#ifndef NO_DLPI
-static void dlpi_request __P((queue_t *, mblk_t *, upperstr_t *));
-static void dlpi_error __P((queue_t *, upperstr_t *, int, int, int));
-static void dlpi_ok __P((queue_t *, int));
-#endif
-static int send_data __P((mblk_t *, upperstr_t *));
-static void new_ppa __P((queue_t *, mblk_t *));
-static void attach_ppa __P((queue_t *, mblk_t *));
-static void detach_ppa __P((queue_t *, mblk_t *));
-static void detach_lower __P((queue_t *, mblk_t *));
-static void debug_dump __P((queue_t *, mblk_t *));
-static upperstr_t *find_dest __P((upperstr_t *, int));
-#if defined(SOL2)
-static upperstr_t *find_promisc __P((upperstr_t *, int));
-static mblk_t *prepend_ether __P((upperstr_t *, mblk_t *, int));
-static mblk_t *prepend_udind __P((upperstr_t *, mblk_t *, int));
-static void promisc_sendup __P((upperstr_t *, mblk_t *, int, int));
-#endif /* defined(SOL2) */
-static int putctl2 __P((queue_t *, int, int, int));
-static int putctl4 __P((queue_t *, int, int, int));
-static int pass_packet __P((upperstr_t *ppa, mblk_t *mp, int outbound));
-#ifdef FILTER_PACKETS
-static int ip_hard_filter __P((upperstr_t *ppa, mblk_t *mp, int outbound));
-#endif /* FILTER_PACKETS */
-
-#define PPP_ID 0xb1a6
-static struct module_info ppp_info = {
-#ifdef PRIOQ
-    PPP_ID, "ppp", 0, 512, 512, 384
-#else
-    PPP_ID, "ppp", 0, 512, 512, 128
-#endif	/* PRIOQ */
-};
-
-static struct qinit pppurint = {
-    pppurput, pppursrv, pppopen, pppclose, NULL, &ppp_info, NULL
-};
-
-static struct qinit pppuwint = {
-    pppuwput, pppuwsrv, NULL, NULL, NULL, &ppp_info, NULL
-};
-
-static struct qinit ppplrint = {
-    ppplrput, ppplrsrv, NULL, NULL, NULL, &ppp_info, NULL
-};
-
-static struct qinit ppplwint = {
-    ppplwput, ppplwsrv, NULL, NULL, NULL, &ppp_info, NULL
-};
-
-#ifdef LACHTCP
-extern struct ifstats *ifstats;
-int pppdevflag = 0;
-#endif
-
-struct streamtab pppinfo = {
-    &pppurint, &pppuwint,
-    &ppplrint, &ppplwint
-};
-
-int ppp_count;
-
-/*
- * How we maintain statistics.
- */
-#ifdef SOL2
-#define INCR_IPACKETS(ppa)				\
-	if (ppa->kstats != 0) {				\
-	    KSTAT_NAMED_PTR(ppa->kstats)[0].value.ul++;	\
-	}
-#define INCR_IERRORS(ppa)				\
-	if (ppa->kstats != 0) {				\
-	    KSTAT_NAMED_PTR(ppa->kstats)[1].value.ul++;	\
-	}
-#define INCR_OPACKETS(ppa)				\
-	if (ppa->kstats != 0) {				\
-	    KSTAT_NAMED_PTR(ppa->kstats)[2].value.ul++;	\
-	}
-#define INCR_OERRORS(ppa)				\
-	if (ppa->kstats != 0) {				\
-	    KSTAT_NAMED_PTR(ppa->kstats)[3].value.ul++;	\
-	}
-#endif
-
-#ifdef LACHTCP
-#define INCR_IPACKETS(ppa)	ppa->ifstats.ifs_ipackets++;
-#define INCR_IERRORS(ppa)	ppa->ifstats.ifs_ierrors++;
-#define INCR_OPACKETS(ppa)	ppa->ifstats.ifs_opackets++;
-#define INCR_OERRORS(ppa)	ppa->ifstats.ifs_oerrors++;
-#endif
-
-/*
- * STREAMS driver entry points.
- */
-static int
-#ifdef SVR4
-pppopen(q, devp, oflag, sflag, credp)
-    queue_t *q;
-    dev_t *devp;
-    int oflag, sflag;
-    cred_t *credp;
-#else
-pppopen(q, dev, oflag, sflag)
-    queue_t *q;
-    int dev;			/* really dev_t */
-    int oflag, sflag;
-#endif
-{
-    upperstr_t *up;
-    upperstr_t **prevp;
-    minor_t mn;
-#ifdef PRIOQ
-    u_short *ptr;
-    u_char new_band;
-#endif	/* PRIOQ */
-
-    if (q->q_ptr)
-	DRV_OPEN_OK(dev);	/* device is already open */
-
-#ifdef PRIOQ
-    /* Calculate max_bband & def_band from definitions in prioq.h
-       This colud be done at some more approtiate time (less often)
-       but this way it works well so I'll just leave it here */
-
-    max_band = 1;
-    def_band = 0;
-    ptr = prioq_table;
-    while (*ptr) {
-        new_band = 1;
-        while (*ptr)
-	    if (*ptr++ == IPPORT_DEFAULT) {
-		new_band = 0;
-		def_band = max_band;
-	    }
-        max_band += new_band;
-        ptr++;
-    }
-    if (def_band)
-        def_band = max_band - def_band;
-    --max_band;
-#endif	/* PRIOQ */
-
-    if (sflag == CLONEOPEN) {
-	mn = 0;
-	for (prevp = &minor_devs; (up = *prevp) != 0; prevp = &up->nextmn) {
-	    if (up->mn != mn)
-		break;
-	    ++mn;
-	}
-    } else {
-#ifdef SVR4
-	mn = getminor(*devp);
-#else
-	mn = minor(dev);
-#endif
-	for (prevp = &minor_devs; (up = *prevp) != 0; prevp = &up->nextmn) {
-	    if (up->mn >= mn)
-		break;
-	}
-	if (up->mn == mn) {
-	    /* this can't happen */
-	    q->q_ptr = WR(q)->q_ptr = (caddr_t) up;
-	    DRV_OPEN_OK(dev);
-	}
-    }
-
-    /*
-     * Construct a new minor node.
-     */
-    up = (upperstr_t *) ALLOC_SLEEP(sizeof(upperstr_t));
-    bzero((caddr_t) up, sizeof(upperstr_t));
-    if (up == 0) {
-	DPRINT("pppopen: out of kernel memory\n");
-	OPEN_ERROR(ENXIO);
-    }
-    up->nextmn = *prevp;
-    *prevp = up;
-    up->mn = mn;
-#ifdef SVR4
-    *devp = makedevice(getmajor(*devp), mn);
-#endif
-    up->q = q;
-    if (NOTSUSER() == 0)
-	up->flags |= US_PRIV;
-#ifndef NO_DLPI
-    up->state = DL_UNATTACHED;
-#endif
-#ifdef LACHTCP
-    up->ifflags = IFF_UP | IFF_POINTOPOINT;
-#endif
-    up->sap = -1;
-    up->last_sent = up->last_recv = time;
-    up->npmode = NPMODE_DROP;
-    q->q_ptr = (caddr_t) up;
-    WR(q)->q_ptr = (caddr_t) up;
-    noenable(WR(q));
-#ifdef SOL2
-    mutex_init(&up->stats_lock, NULL, MUTEX_DRIVER, NULL);
-#endif
-    ++ppp_count;
-
-    qprocson(q);
-    DRV_OPEN_OK(makedev(major(dev), mn));
-}
-
-static int
-#ifdef SVR4
-pppclose(q, flag, credp)
-    queue_t *q;
-    int flag;
-    cred_t *credp;
-#else
-pppclose(q, flag)
-    queue_t *q;
-    int flag;
-#endif
-{
-    upperstr_t *up, **upp;
-    upperstr_t *as, *asnext;
-    upperstr_t **prevp;
-
-    qprocsoff(q);
-
-    up = (upperstr_t *) q->q_ptr;
-    if (up == 0) {
-	DPRINT("pppclose: q_ptr = 0\n");
-	return 0;
-    }
-    if (up->flags & US_DBGLOG)
-	DPRINT2("ppp/%d: close, flags=%x\n", up->mn, up->flags);
-    if (up->flags & US_CONTROL) {
-#ifdef LACHTCP
-	struct ifstats *ifp, *pifp;
-#endif
-	if (up->lowerq != 0) {
-	    /* Gack! the lower stream should have be unlinked earlier! */
-	    DPRINT1("ppp%d: lower stream still connected on close?\n",
-		    up->mn);
-	    LOCK_LOWER_W;
-	    up->lowerq->q_ptr = 0;
-	    RD(up->lowerq)->q_ptr = 0;
-	    up->lowerq = 0;
-	    UNLOCK_LOWER;
-	}
-
-	/*
-	 * This stream represents a PPA:
-	 * For all streams attached to the PPA, clear their
-	 * references to this PPA.
-	 * Then remove this PPA from the list of PPAs.
-	 */
-	for (as = up->next; as != 0; as = asnext) {
-	    asnext = as->next;
-	    as->next = 0;
-	    as->ppa = 0;
-	    if (as->flags & US_BLOCKED) {
-		as->flags &= ~US_BLOCKED;
-		flushq(WR(as->q), FLUSHDATA);
-	    }
-	}
-	for (upp = &ppas; *upp != 0; upp = &(*upp)->nextppa)
-	    if (*upp == up) {
-		*upp = up->nextppa;
-		break;
-	    }
-#ifdef LACHTCP
-	/* Remove the statistics from the active list.  */
-	for (ifp = ifstats, pifp = 0; ifp; ifp = ifp->ifs_next) {
-	    if (ifp == &up->ifstats) {
-		if (pifp)
-		    pifp->ifs_next = ifp->ifs_next;
-		else
-		    ifstats = ifp->ifs_next;
-		break;
-	    }
-	    pifp = ifp;
-	}
-#endif
-    } else {
-	/*
-	 * If this stream is attached to a PPA,
-	 * remove it from the PPA's list.
-	 */
-	if ((as = up->ppa) != 0) {
-	    for (; as->next != 0; as = as->next)
-		if (as->next == up) {
-		    as->next = up->next;
-		    break;
-		}
-	}
-    }
-
-#ifdef SOL2
-    if (up->kstats)
-	kstat_delete(up->kstats);
-    mutex_destroy(&up->stats_lock);
-#endif
-
-    q->q_ptr = NULL;
-    WR(q)->q_ptr = NULL;
-
-    for (prevp = &minor_devs; *prevp != 0; prevp = &(*prevp)->nextmn) {
-	if (*prevp == up) {
-	    *prevp = up->nextmn;
-	    break;
-	}
-    }
-    FREE(up, sizeof(upperstr_t));
-    --ppp_count;
-
-    return 0;
-}
-
-/*
- * A message from on high.  We do one of three things:
- *	- qreply()
- *	- put the message on the lower write stream
- *	- queue it for our service routine
- */
-static int
-pppuwput(q, mp)
-    queue_t *q;
-    mblk_t *mp;
-{
-    upperstr_t *us, *ppa, *nps;
-    struct iocblk *iop;
-    struct linkblk *lb;
-#ifdef LACHTCP
-    struct ifreq *ifr;
-    int i;
-#endif
-    queue_t *lq;
-    int error, n, sap;
-    mblk_t *mq;
-    struct ppp_idle *pip;
-#ifdef PRIOQ
-    queue_t *tlq;
-#endif	/* PRIOQ */
-#ifdef NO_DLPI
-    upperstr_t *os;
-#endif
-
-    us = (upperstr_t *) q->q_ptr;
-    if (us == 0) {
-	DPRINT("pppuwput: q_ptr = 0!\n");
-	return 0;
-    }
-    if (mp == 0) {
-	DPRINT1("pppuwput/%d: mp = 0!\n", us->mn);
-	return 0;
-    }
-    if (mp->b_datap == 0) {
-	DPRINT1("pppuwput/%d: mp->b_datap = 0!\n", us->mn);
-	return 0;
-    }
-    switch (mp->b_datap->db_type) {
-#ifndef NO_DLPI
-    case M_PCPROTO:
-    case M_PROTO:
-	dlpi_request(q, mp, us);
-	break;
-#endif /* NO_DLPI */
-
-    case M_DATA:
-	if (us->flags & US_DBGLOG)
-	    DPRINT3("ppp/%d: uwput M_DATA len=%d flags=%x\n",
-		    us->mn, msgdsize(mp), us->flags);
-	if (us->ppa == 0 || msgdsize(mp) > us->ppa->mtu + PPP_HDRLEN
-#ifndef NO_DLPI
-	    || (us->flags & US_CONTROL) == 0
-#endif /* NO_DLPI */
-	    ) {
-	    DPRINT1("pppuwput: junk data len=%d\n", msgdsize(mp));
-	    freemsg(mp);
-	    break;
-	}
-#ifdef NO_DLPI
-	if ((us->flags & US_CONTROL) == 0 && !pass_packet(us, mp, 1))
-	    break;
-#endif
-	if (!send_data(mp, us))
-	    putq(q, mp);
-	break;
-
-    case M_IOCTL:
-	iop = (struct iocblk *) mp->b_rptr;
-	error = EINVAL;
-	if (us->flags & US_DBGLOG)
-	    DPRINT3("ppp/%d: ioctl %x count=%d\n",
-		    us->mn, iop->ioc_cmd, iop->ioc_count);
-	switch (iop->ioc_cmd) {
-#if defined(SOL2)
-	case DLIOCRAW:	    /* raw M_DATA mode */
-	    us->flags |= US_RAWDATA;
-	    error = 0;
-	    break;
-#endif /* defined(SOL2) */
-	case I_LINK:
-	    if ((us->flags & US_CONTROL) == 0 || us->lowerq != 0)
-		break;
-	    if (mp->b_cont == 0) {
-		DPRINT1("pppuwput/%d: ioctl I_LINK b_cont = 0!\n", us->mn);
-		break;
-	    }
-	    lb = (struct linkblk *) mp->b_cont->b_rptr;
-	    lq = lb->l_qbot;
-	    if (lq == 0) {
-		DPRINT1("pppuwput/%d: ioctl I_LINK l_qbot = 0!\n", us->mn);
-		break;
-	    }
-	    LOCK_LOWER_W;
-	    us->lowerq = lq;
-	    lq->q_ptr = (caddr_t) q;
-	    RD(lq)->q_ptr = (caddr_t) us->q;
-	    UNLOCK_LOWER;
-	    iop->ioc_count = 0;
-	    error = 0;
-	    us->flags &= ~US_LASTMOD;
-	    /* Unblock upper streams which now feed this lower stream. */
-	    qenable(q);
-	    /* Send useful information down to the modules which
-	       are now linked below us. */
-	    putctl2(lq, M_CTL, PPPCTL_UNIT, us->ppa_id);
-	    putctl4(lq, M_CTL, PPPCTL_MRU, us->mru);
-	    putctl4(lq, M_CTL, PPPCTL_MTU, us->mtu);
-#ifdef PRIOQ
-            /* Lower tty driver's queue hiwat/lowat from default 4096/128
-               to 256/128 since we don't want queueing of data on
-               output to physical device */
-
-            freezestr(lq);
-            for (tlq = lq; tlq->q_next != NULL; tlq = tlq->q_next)
-		;
-            strqset(tlq, QHIWAT, 0, 256);
-            strqset(tlq, QLOWAT, 0, 128);
-            unfreezestr(lq);
-#endif	/* PRIOQ */
-	    break;
-
-	case I_UNLINK:
-	    if (mp->b_cont == 0) {
-		DPRINT1("pppuwput/%d: ioctl I_UNLINK b_cont = 0!\n", us->mn);
-		break;
-	    }
-	    lb = (struct linkblk *) mp->b_cont->b_rptr;
-#if DEBUG
-	    if (us->lowerq != lb->l_qbot) {
-		DPRINT2("ppp unlink: lowerq=%x qbot=%x\n",
-			us->lowerq, lb->l_qbot);
-		break;
-	    }
-#endif
-	    iop->ioc_count = 0;
-	    qwriter(q, mp, detach_lower, PERIM_OUTER);
-	    error = -1;
-	    break;
-
-	case PPPIO_NEWPPA:
-	    if (us->flags & US_CONTROL)
-		break;
-	    if ((us->flags & US_PRIV) == 0) {
-		error = EPERM;
-		break;
-	    }
-	    /* Arrange to return an int */
-	    if ((mq = mp->b_cont) == 0
-		|| mq->b_datap->db_lim - mq->b_rptr < sizeof(int)) {
-		mq = allocb(sizeof(int), BPRI_HI);
-		if (mq == 0) {
-		    error = ENOSR;
-		    break;
-		}
-		if (mp->b_cont != 0)
-		    freemsg(mp->b_cont);
-		mp->b_cont = mq;
-		mq->b_cont = 0;
-	    }
-	    iop->ioc_count = sizeof(int);
-	    mq->b_wptr = mq->b_rptr + sizeof(int);
-	    qwriter(q, mp, new_ppa, PERIM_OUTER);
-	    error = -1;
-	    break;
-
-	case PPPIO_ATTACH:
-	    /* like dlpi_attach, for programs which can't write to
-	       the stream (like pppstats) */
-	    if (iop->ioc_count != sizeof(int) || us->ppa != 0)
-		break;
-	    if (mp->b_cont == 0) {
-		DPRINT1("pppuwput/%d: ioctl PPPIO_ATTACH b_cont = 0!\n", us->mn);
-		break;
-	    }
-	    n = *(int *)mp->b_cont->b_rptr;
-	    for (ppa = ppas; ppa != 0; ppa = ppa->nextppa)
-		if (ppa->ppa_id == n)
-		    break;
-	    if (ppa == 0)
-		break;
-	    us->ppa = ppa;
-	    iop->ioc_count = 0;
-	    qwriter(q, mp, attach_ppa, PERIM_OUTER);
-	    error = -1;
-	    break;
-
-#ifdef NO_DLPI
-	case PPPIO_BIND:
-	    /* Attach to a given SAP. */
-	    if (iop->ioc_count != sizeof(int) || us->ppa == 0)
-		break;
-	    if (mp->b_cont == 0) {
-		DPRINT1("pppuwput/%d: ioctl PPPIO_BIND b_cont = 0!\n", us->mn);
-		break;
-	    }
-	    n = *(int *)mp->b_cont->b_rptr;
-	    /* n must be a valid PPP network protocol number. */
-	    if (n < 0x21 || n > 0x3fff || (n & 0x101) != 1)
-		break;
-	    /* check that no other stream is bound to this sap already. */
-	    for (os = us->ppa; os != 0; os = os->next)
-		if (os->sap == n)
-		    break;
-	    if (os != 0)
-		break;
-	    us->sap = n;
-	    iop->ioc_count = 0;
-	    error = 0;
-	    break;
-#endif /* NO_DLPI */
-
-	case PPPIO_MRU:
-	    if (iop->ioc_count != sizeof(int) || (us->flags & US_CONTROL) == 0)
-		break;
-	    if (mp->b_cont == 0) {
-		DPRINT1("pppuwput/%d: ioctl PPPIO_MRU b_cont = 0!\n", us->mn);
-		break;
-	    }
-	    n = *(int *)mp->b_cont->b_rptr;
-	    if (n <= 0 || n > PPP_MAXMRU)
-		break;
-	    if (n < PPP_MRU)
-		n = PPP_MRU;
-	    us->mru = n;
-	    if (us->lowerq)
-		putctl4(us->lowerq, M_CTL, PPPCTL_MRU, n);
-	    error = 0;
-	    iop->ioc_count = 0;
-	    break;
-
-	case PPPIO_MTU:
-	    if (iop->ioc_count != sizeof(int) || (us->flags & US_CONTROL) == 0)
-		break;
-	    if (mp->b_cont == 0) {
-		DPRINT1("pppuwput/%d: ioctl PPPIO_MTU b_cont = 0!\n", us->mn);
-		break;
-	    }
-	    n = *(int *)mp->b_cont->b_rptr;
-	    if (n <= 0 || n > PPP_MAXMTU)
-		break;
-	    us->mtu = n;
-#ifdef LACHTCP
-	    /* The MTU reported in netstat, not used as IP max packet size! */
-	    us->ifstats.ifs_mtu = n;
-#endif
-	    if (us->lowerq)
-		putctl4(us->lowerq, M_CTL, PPPCTL_MTU, n);
-	    error = 0;
-	    iop->ioc_count = 0;
-	    break;
-
-	case PPPIO_LASTMOD:
-	    us->flags |= US_LASTMOD;
-	    error = 0;
-	    break;
-
-	case PPPIO_DEBUG:
-	    if (iop->ioc_count != sizeof(int))
-		break;
-	    if (mp->b_cont == 0) {
-		DPRINT1("pppuwput/%d: ioctl PPPIO_DEBUG b_cont = 0!\n", us->mn);
-		break;
-	    }
-	    n = *(int *)mp->b_cont->b_rptr;
-	    if (n == PPPDBG_DUMP + PPPDBG_DRIVER) {
-		qwriter(q, NULL, debug_dump, PERIM_OUTER);
-		iop->ioc_count = 0;
-		error = -1;
-	    } else if (n == PPPDBG_LOG + PPPDBG_DRIVER) {
-		DPRINT1("ppp/%d: debug log enabled\n", us->mn);
-		us->flags |= US_DBGLOG;
-		iop->ioc_count = 0;
-		error = 0;
-	    } else {
-		if (us->ppa == 0 || us->ppa->lowerq == 0)
-		    break;
-		putnext(us->ppa->lowerq, mp);
-		error = -1;
-	    }
-	    break;
-
-	case PPPIO_NPMODE:
-	    if (iop->ioc_count != 2 * sizeof(int))
-		break;
-	    if ((us->flags & US_CONTROL) == 0)
-		break;
-	    if (mp->b_cont == 0) {
-		DPRINT1("pppuwput/%d: ioctl PPPIO_NPMODE b_cont = 0!\n", us->mn);
-		break;
-	    }
-	    sap = ((int *)mp->b_cont->b_rptr)[0];
-	    for (nps = us->next; nps != 0; nps = nps->next) {
-		if (us->flags & US_DBGLOG)
-		    DPRINT2("us = 0x%x, us->next->sap = 0x%x\n", nps, nps->sap);
-		if (nps->sap == sap)
-		    break;
-	    }
-	    if (nps == 0) {
-		if (us->flags & US_DBGLOG)
-		    DPRINT2("ppp/%d: no stream for sap %x\n", us->mn, sap);
-		break;
-	    }
-	    /* XXX possibly should use qwriter here */
-	    nps->npmode = (enum NPmode) ((int *)mp->b_cont->b_rptr)[1];
-	    if (nps->npmode != NPMODE_QUEUE && (nps->flags & US_BLOCKED) != 0)
-		qenable(WR(nps->q));
-	    iop->ioc_count = 0;
-	    error = 0;
-	    break;
-
-	case PPPIO_GIDLE:
-	    if ((ppa = us->ppa) == 0)
-		break;
-	    mq = allocb(sizeof(struct ppp_idle), BPRI_HI);
-	    if (mq == 0) {
-		error = ENOSR;
-		break;
-	    }
-	    if (mp->b_cont != 0)
-		freemsg(mp->b_cont);
-	    mp->b_cont = mq;
-	    mq->b_cont = 0;
-	    pip = (struct ppp_idle *) mq->b_wptr;
-	    pip->xmit_idle = time - ppa->last_sent;
-	    pip->recv_idle = time - ppa->last_recv;
-	    mq->b_wptr += sizeof(struct ppp_idle);
-	    iop->ioc_count = sizeof(struct ppp_idle);
-	    error = 0;
-	    break;
-
-#ifdef LACHTCP
-	case SIOCSIFNAME:
-	    /* Sent from IP down to us.  Attach the ifstats structure.  */
-	    if (iop->ioc_count != sizeof(struct ifreq) || us->ppa == 0)
-	        break;
-	    ifr = (struct ifreq *)mp->b_cont->b_rptr;
-	    /* Find the unit number in the interface name.  */
-	    for (i = 0; i < IFNAMSIZ; i++) {
-		if (ifr->ifr_name[i] == 0 ||
-		    (ifr->ifr_name[i] >= '0' &&
-		     ifr->ifr_name[i] <= '9'))
-		    break;
-		else
-		    us->ifname[i] = ifr->ifr_name[i];
-	    }
-	    us->ifname[i] = 0;
-
-	    /* Convert the unit number to binary.  */
-	    for (n = 0; i < IFNAMSIZ; i++) {
-		if (ifr->ifr_name[i] == 0) {
-		    break;
-		}
-	        else {
-		    n = n * 10 + ifr->ifr_name[i] - '0';
-		}
-	    }
-
-	    /* Verify the ppa.  */
-	    if (us->ppa->ppa_id != n)
-		break;
-	    ppa = us->ppa;
-
-	    /* Set up the netstat block.  */
-	    strncpy (ppa->ifname, us->ifname, IFNAMSIZ);
-
-	    ppa->ifstats.ifs_name = ppa->ifname;
-	    ppa->ifstats.ifs_unit = n;
-	    ppa->ifstats.ifs_active = us->state != DL_UNBOUND;
-	    ppa->ifstats.ifs_mtu = ppa->mtu;
-
-	    /* Link in statistics used by netstat.  */
-	    ppa->ifstats.ifs_next = ifstats;
-	    ifstats = &ppa->ifstats;
-
-	    iop->ioc_count = 0;
-	    error = 0;
-	    break;
-
-	case SIOCGIFFLAGS:
-	    if (!(us->flags & US_CONTROL)) {
-		if (us->ppa)
-		    us = us->ppa;
-	        else
-		    break;
-	    }
-	    ((struct iocblk_in *)iop)->ioc_ifflags = us->ifflags;
-	    error = 0;
-	    break;
-
-	case SIOCSIFFLAGS:
-	    if (!(us->flags & US_CONTROL)) {
-		if (us->ppa)
-		    us = us->ppa;
-		else
-		    break;
-	    }
-	    us->ifflags = ((struct iocblk_in *)iop)->ioc_ifflags;
-	    error = 0;
-	    break;
-
-	case SIOCSIFADDR:
-	    if (!(us->flags & US_CONTROL)) {
-		if (us->ppa)
-		    us = us->ppa;
-		else
-		    break;
-	    }
-	    us->ifflags |= IFF_RUNNING;
-	    ((struct iocblk_in *)iop)->ioc_ifflags |= IFF_RUNNING;
-	    error = 0;
-	    break;
-
-	case SIOCSIFMTU:
-	    /*
-	     * Vanilla SVR4 systems don't handle SIOCSIFMTU, rather
-	     * they take the MTU from the DL_INFO_ACK we sent in response
-	     * to their DL_INFO_REQ.  Fortunately, they will update the
-	     * MTU if we send an unsolicited DL_INFO_ACK up.
-	     */
-	    if ((mq = allocb(sizeof(dl_info_req_t), BPRI_HI)) == 0)
-		break;		/* should do bufcall */
-	    ((union DL_primitives *)mq->b_rptr)->dl_primitive = DL_INFO_REQ;
-	    mq->b_wptr = mq->b_rptr + sizeof(dl_info_req_t);
-	    dlpi_request(q, mq, us);
-	    error = 0;
-	    break;
-
-	case SIOCGIFNETMASK:
-	case SIOCSIFNETMASK:
-	case SIOCGIFADDR:
-	case SIOCGIFDSTADDR:
-	case SIOCSIFDSTADDR:
-	case SIOCGIFMETRIC:
-	    error = 0;
-	    break;
-#endif /* LACHTCP */
-
-	default:
-	    if (us->ppa == 0 || us->ppa->lowerq == 0)
-		break;
-	    us->ioc_id = iop->ioc_id;
-	    error = -1;
-	    switch (iop->ioc_cmd) {
-	    case PPPIO_GETSTAT:
-	    case PPPIO_GETCSTAT:
-		if (us->flags & US_LASTMOD) {
-		    error = EINVAL;
-		    break;
-		}
-		putnext(us->ppa->lowerq, mp);
-		break;
-	    default:
-		if (us->flags & US_PRIV)
-		    putnext(us->ppa->lowerq, mp);
-		else {
-		    DPRINT1("ppp ioctl %x rejected\n", iop->ioc_cmd);
-		    error = EPERM;
-		}
-		break;
-	    }
-	    break;
-	}
-
-	if (error > 0) {
-	    iop->ioc_error = error;
-	    mp->b_datap->db_type = M_IOCNAK;
-	    qreply(q, mp);
-	} else if (error == 0) {
-	    mp->b_datap->db_type = M_IOCACK;
-	    qreply(q, mp);
-	}
-	break;
-
-    case M_FLUSH:
-	if (us->flags & US_DBGLOG)
-	    DPRINT2("ppp/%d: flush %x\n", us->mn, *mp->b_rptr);
-	if (*mp->b_rptr & FLUSHW)
-	    flushq(q, FLUSHDATA);
-	if (*mp->b_rptr & FLUSHR) {
-	    *mp->b_rptr &= ~FLUSHW;
-	    qreply(q, mp);
-	} else
-	    freemsg(mp);
-	break;
-
-    default:
-	freemsg(mp);
-	break;
-    }
-    return 0;
-}
-
-#ifndef NO_DLPI
-static void
-dlpi_request(q, mp, us)
-    queue_t *q;
-    mblk_t *mp;
-    upperstr_t *us;
-{
-    union DL_primitives *d = (union DL_primitives *) mp->b_rptr;
-    int size = mp->b_wptr - mp->b_rptr;
-    mblk_t *reply, *np;
-    upperstr_t *ppa, *os;
-    int sap, len;
-    dl_info_ack_t *info;
-    dl_bind_ack_t *ackp;
-#if DL_CURRENT_VERSION >= 2
-    dl_phys_addr_ack_t	*paddrack;
-    static struct ether_addr eaddr = {0};
-#endif
-
-    if (us->flags & US_DBGLOG)
-	DPRINT3("ppp/%d: dlpi prim %x len=%d\n", us->mn,
-		d->dl_primitive, size);
-    switch (d->dl_primitive) {
-    case DL_INFO_REQ:
-	if (size < sizeof(dl_info_req_t))
-	    goto badprim;
-	if ((reply = allocb(sizeof(dl_info_ack_t), BPRI_HI)) == 0)
-	    break;		/* should do bufcall */
-	reply->b_datap->db_type = M_PCPROTO;
-	info = (dl_info_ack_t *) reply->b_wptr;
-	reply->b_wptr += sizeof(dl_info_ack_t);
-	bzero((caddr_t) info, sizeof(dl_info_ack_t));
-	info->dl_primitive = DL_INFO_ACK;
-	info->dl_max_sdu = us->ppa? us->ppa->mtu: PPP_MAXMTU;
-	info->dl_min_sdu = 1;
-	info->dl_addr_length = sizeof(uint);
-	info->dl_mac_type = DL_ETHER;	/* a bigger lie */
-	info->dl_current_state = us->state;
-	info->dl_service_mode = DL_CLDLS;
-	info->dl_provider_style = DL_STYLE2;
-#if DL_CURRENT_VERSION >= 2
-	info->dl_sap_length = sizeof(uint);
-	info->dl_version = DL_CURRENT_VERSION;
-#endif
-	qreply(q, reply);
-	break;
-
-    case DL_ATTACH_REQ:
-	if (size < sizeof(dl_attach_req_t))
-	    goto badprim;
-	if (us->state != DL_UNATTACHED || us->ppa != 0) {
-	    dlpi_error(q, us, DL_ATTACH_REQ, DL_OUTSTATE, 0);
-	    break;
-	}
-	for (ppa = ppas; ppa != 0; ppa = ppa->nextppa)
-	    if (ppa->ppa_id == d->attach_req.dl_ppa)
-		break;
-	if (ppa == 0) {
-	    dlpi_error(q, us, DL_ATTACH_REQ, DL_BADPPA, 0);
-	    break;
-	}
-	us->ppa = ppa;
-	qwriter(q, mp, attach_ppa, PERIM_OUTER);
-	return;
-
-    case DL_DETACH_REQ:
-	if (size < sizeof(dl_detach_req_t))
-	    goto badprim;
-	if (us->state != DL_UNBOUND || us->ppa == 0) {
-	    dlpi_error(q, us, DL_DETACH_REQ, DL_OUTSTATE, 0);
-	    break;
-	}
-	qwriter(q, mp, detach_ppa, PERIM_OUTER);
-	return;
-
-    case DL_BIND_REQ:
-	if (size < sizeof(dl_bind_req_t))
-	    goto badprim;
-	if (us->state != DL_UNBOUND || us->ppa == 0) {
-	    dlpi_error(q, us, DL_BIND_REQ, DL_OUTSTATE, 0);
-	    break;
-	}
-#if 0
-	/* apparently this test fails (unnecessarily?) on some systems */
-	if (d->bind_req.dl_service_mode != DL_CLDLS) {
-	    dlpi_error(q, us, DL_BIND_REQ, DL_UNSUPPORTED, 0);
-	    break;
-	}
-#endif
-
-	/* saps must be valid PPP network protocol numbers,
-	   except that we accept ETHERTYPE_IP in place of PPP_IP. */
-	sap = d->bind_req.dl_sap;
-	us->req_sap = sap;
-
-#if defined(SOL2)
-	if (us->flags & US_DBGLOG)
-	    DPRINT2("DL_BIND_REQ: ip gives sap = 0x%x, us = 0x%x", sap, us);
-
-	if (sap == ETHERTYPE_IP)	    /* normal IFF_IPV4 */
-	    sap = PPP_IP;
-	else if (sap == ETHERTYPE_IPV6)	    /* when IFF_IPV6 is set */
-	    sap = PPP_IPV6;
-	else if (sap == ETHERTYPE_ALLSAP)   /* snoop gives sap of 0 */
-	    sap = PPP_ALLSAP;
-	else {
-	    DPRINT2("DL_BIND_REQ: unrecognized sap = 0x%x, us = 0x%x", sap, us);
-	    dlpi_error(q, us, DL_BIND_REQ, DL_BADADDR, 0);
-	    break;
-	}
-#else
-	if (sap == ETHERTYPE_IP)
-	    sap = PPP_IP;
-	if (sap < 0x21 || sap > 0x3fff || (sap & 0x101) != 1) {
-	    dlpi_error(q, us, DL_BIND_REQ, DL_BADADDR, 0);
-	    break;
-	}
-#endif /* defined(SOL2) */
-
-	/* check that no other stream is bound to this sap already. */
-	for (os = us->ppa; os != 0; os = os->next)
-	    if (os->sap == sap)
-		break;
-	if (os != 0) {
-	    dlpi_error(q, us, DL_BIND_REQ, DL_NOADDR, 0);
-	    break;
-	}
-
-	us->sap = sap;
-	us->state = DL_IDLE;
-
-	if ((reply = allocb(sizeof(dl_bind_ack_t) + sizeof(uint),
-			    BPRI_HI)) == 0)
-	    break;		/* should do bufcall */
-	ackp = (dl_bind_ack_t *) reply->b_wptr;
-	reply->b_wptr += sizeof(dl_bind_ack_t) + sizeof(uint);
-	reply->b_datap->db_type = M_PCPROTO;
-	bzero((caddr_t) ackp, sizeof(dl_bind_ack_t));
-	ackp->dl_primitive = DL_BIND_ACK;
-	ackp->dl_sap = sap;
-	ackp->dl_addr_length = sizeof(uint);
-	ackp->dl_addr_offset = sizeof(dl_bind_ack_t);
-	*(uint *)(ackp+1) = sap;
-	qreply(q, reply);
-	break;
-
-    case DL_UNBIND_REQ:
-	if (size < sizeof(dl_unbind_req_t))
-	    goto badprim;
-	if (us->state != DL_IDLE) {
-	    dlpi_error(q, us, DL_UNBIND_REQ, DL_OUTSTATE, 0);
-	    break;
-	}
-	us->sap = -1;
-	us->state = DL_UNBOUND;
-#ifdef LACHTCP
-	us->ppa->ifstats.ifs_active = 0;
-#endif
-	dlpi_ok(q, DL_UNBIND_REQ);
-	break;
-
-    case DL_UNITDATA_REQ:
-	if (size < sizeof(dl_unitdata_req_t))
-	    goto badprim;
-	if (us->state != DL_IDLE) {
-	    dlpi_error(q, us, DL_UNITDATA_REQ, DL_OUTSTATE, 0);
-	    break;
-	}
-	if ((ppa = us->ppa) == 0) {
-	    cmn_err(CE_CONT, "ppp: in state dl_idle but ppa == 0?\n");
-	    break;
-	}
-	len = mp->b_cont == 0? 0: msgdsize(mp->b_cont);
-	if (len > ppa->mtu) {
-	    DPRINT2("dlpi data too large (%d > %d)\n", len, ppa->mtu);
-	    break;
-	}
-
-#if defined(SOL2)
-	/*
-	 * Should there be any promiscuous stream(s), send the data
-	 * up for each promiscuous stream that we recognize.
-	 */
-	if (mp->b_cont)
-	    promisc_sendup(ppa, mp->b_cont, us->sap, 0);
-#endif /* defined(SOL2) */
-
-	mp->b_band = 0;
-#ifdef PRIOQ
-        /* Extract s_port & d_port from IP-packet, the code is a bit
-           dirty here, but so am I, too... */
-        if (mp->b_datap->db_type == M_PROTO && us->sap == PPP_IP
-	    && mp->b_cont != 0) {
-	    u_char *bb, *tlh;
-	    int iphlen, len;
-	    u_short *ptr;
-	    u_char band_unset, cur_band, syn;
-	    u_short s_port, d_port;
-
-            bb = mp->b_cont->b_rptr; /* bb points to IP-header*/
-	    len = mp->b_cont->b_wptr - mp->b_cont->b_rptr;
-            syn = 0;
-	    s_port = IPPORT_DEFAULT;
-	    d_port = IPPORT_DEFAULT;
-	    if (len >= 20) {	/* 20 = minimum length of IP header */
-		iphlen = (bb[0] & 0x0f) * 4;
-		tlh = bb + iphlen;
-		len -= iphlen;
-		switch (bb[9]) {
-		case IPPROTO_TCP:
-		    if (len >= 20) {	      /* min length of TCP header */
-			s_port = (tlh[0] << 8) + tlh[1];
-			d_port = (tlh[2] << 8) + tlh[3];
-			syn = tlh[13] & 0x02;
-		    }
-		    break;
-		case IPPROTO_UDP:
-		    if (len >= 8) {	      /* min length of UDP header */
-			s_port = (tlh[0] << 8) + tlh[1];
-			d_port = (tlh[2] << 8) + tlh[3];
-		    }
-		    break;
-		}
-	    }
-
-            /*
-	     * Now calculate b_band for this packet from the
-	     * port-priority table.
-	     */
-            ptr = prioq_table;
-            cur_band = max_band;
-            band_unset = 1;
-            while (*ptr) {
-                while (*ptr && band_unset)
-                    if (s_port == *ptr || d_port == *ptr++) {
-                        mp->b_band = cur_band;
-                        band_unset = 0;
-                        break;
-		    }
-                ptr++;
-                cur_band--;
-	    }
-            if (band_unset)
-		mp->b_band = def_band;
-            /* It may be usable to urge SYN packets a bit */
-            if (syn)
-		mp->b_band++;
-	}
-#endif	/* PRIOQ */
-	/* this assumes PPP_HDRLEN <= sizeof(dl_unitdata_req_t) */
-	if (mp->b_datap->db_ref > 1) {
-	    np = allocb(PPP_HDRLEN, BPRI_HI);
-	    if (np == 0)
-		break;		/* gak! */
-	    np->b_cont = mp->b_cont;
-	    mp->b_cont = 0;
-	    freeb(mp);
-	    mp = np;
-	} else
-	    mp->b_datap->db_type = M_DATA;
-	/* XXX should use dl_dest_addr_offset/length here,
-	   but we would have to translate ETHERTYPE_IP -> PPP_IP */
-	mp->b_wptr = mp->b_rptr + PPP_HDRLEN;
-	mp->b_rptr[0] = PPP_ALLSTATIONS;
-	mp->b_rptr[1] = PPP_UI;
-	mp->b_rptr[2] = us->sap >> 8;
-	mp->b_rptr[3] = us->sap;
-	if (pass_packet(us, mp, 1)) {
-	    if (!send_data(mp, us))
-		putq(q, mp);
-	}
-	return;
-
-#if DL_CURRENT_VERSION >= 2
-    case DL_PHYS_ADDR_REQ:
-	if (size < sizeof(dl_phys_addr_req_t))
-	    goto badprim;
-
-	/*
-	 * Don't check state because ifconfig sends this one down too
-	 */
-
-	if ((reply = allocb(sizeof(dl_phys_addr_ack_t)+ETHERADDRL, 
-			BPRI_HI)) == 0)
-	    break;		/* should do bufcall */
-	reply->b_datap->db_type = M_PCPROTO;
-	paddrack = (dl_phys_addr_ack_t *) reply->b_wptr;
-	reply->b_wptr += sizeof(dl_phys_addr_ack_t);
-	bzero((caddr_t) paddrack, sizeof(dl_phys_addr_ack_t)+ETHERADDRL);
-	paddrack->dl_primitive = DL_PHYS_ADDR_ACK;
-	paddrack->dl_addr_length = ETHERADDRL;
-	paddrack->dl_addr_offset = sizeof(dl_phys_addr_ack_t);
-	bcopy(&eaddr, reply->b_wptr, ETHERADDRL);
-	reply->b_wptr += ETHERADDRL;
-	qreply(q, reply);
-	break;
-
-#if defined(SOL2)
-    case DL_PROMISCON_REQ:
-	if (size < sizeof(dl_promiscon_req_t))
-	    goto badprim;
-	us->flags |= US_PROMISC;
-	dlpi_ok(q, DL_PROMISCON_REQ);
-	break;
-
-    case DL_PROMISCOFF_REQ:
-	if (size < sizeof(dl_promiscoff_req_t))
-	    goto badprim;
-	us->flags &= ~US_PROMISC;
-	dlpi_ok(q, DL_PROMISCOFF_REQ);
-	break;
-#else
-    case DL_PROMISCON_REQ:	    /* fall thru */
-    case DL_PROMISCOFF_REQ:	    /* fall thru */
-#endif /* defined(SOL2) */
-#endif /* DL_CURRENT_VERSION >= 2 */
-
-#if DL_CURRENT_VERSION >= 2
-    case DL_SET_PHYS_ADDR_REQ:
-    case DL_SUBS_BIND_REQ:
-    case DL_SUBS_UNBIND_REQ:
-    case DL_ENABMULTI_REQ:
-    case DL_DISABMULTI_REQ:
-    case DL_XID_REQ:
-    case DL_TEST_REQ:
-    case DL_REPLY_UPDATE_REQ:
-    case DL_REPLY_REQ:
-    case DL_DATA_ACK_REQ:
-#endif
-    case DL_CONNECT_REQ:
-    case DL_TOKEN_REQ:
-	dlpi_error(q, us, d->dl_primitive, DL_NOTSUPPORTED, 0);
-	break;
-
-    case DL_CONNECT_RES:
-    case DL_DISCONNECT_REQ:
-    case DL_RESET_REQ:
-    case DL_RESET_RES:
-	dlpi_error(q, us, d->dl_primitive, DL_OUTSTATE, 0);
-	break;
-
-    case DL_UDQOS_REQ:
-	dlpi_error(q, us, d->dl_primitive, DL_BADQOSTYPE, 0);
-	break;
-
-#if DL_CURRENT_VERSION >= 2
-    case DL_TEST_RES:
-    case DL_XID_RES:
-	break;
-#endif
-
-    default:
-	cmn_err(CE_CONT, "ppp: unknown dlpi prim 0x%x\n", d->dl_primitive);
-	/* fall through */
-    badprim:
-	dlpi_error(q, us, d->dl_primitive, DL_BADPRIM, 0);
-	break;
-    }
-    freemsg(mp);
-}
-
-static void
-dlpi_error(q, us, prim, err, uerr)
-    queue_t *q;
-    upperstr_t *us;
-    int prim, err, uerr;
-{
-    mblk_t *reply;
-    dl_error_ack_t *errp;
-
-    if (us->flags & US_DBGLOG)
-        DPRINT3("ppp/%d: dlpi error, prim=%x, err=%x\n", us->mn, prim, err);
-    reply = allocb(sizeof(dl_error_ack_t), BPRI_HI);
-    if (reply == 0)
-	return;			/* XXX should do bufcall */
-    reply->b_datap->db_type = M_PCPROTO;
-    errp = (dl_error_ack_t *) reply->b_wptr;
-    reply->b_wptr += sizeof(dl_error_ack_t);
-    errp->dl_primitive = DL_ERROR_ACK;
-    errp->dl_error_primitive = prim;
-    errp->dl_errno = err;
-    errp->dl_unix_errno = uerr;
-    qreply(q, reply);
-}
-
-static void
-dlpi_ok(q, prim)
-    queue_t *q;
-    int prim;
-{
-    mblk_t *reply;
-    dl_ok_ack_t *okp;
-
-    reply = allocb(sizeof(dl_ok_ack_t), BPRI_HI);
-    if (reply == 0)
-	return;			/* XXX should do bufcall */
-    reply->b_datap->db_type = M_PCPROTO;
-    okp = (dl_ok_ack_t *) reply->b_wptr;
-    reply->b_wptr += sizeof(dl_ok_ack_t);
-    okp->dl_primitive = DL_OK_ACK;
-    okp->dl_correct_primitive = prim;
-    qreply(q, reply);
-}
-#endif /* NO_DLPI */
-
-static int
-pass_packet(us, mp, outbound)
-    upperstr_t *us;
-    mblk_t *mp;
-    int outbound;
-{
-    int pass;
-    upperstr_t *ppa;
-
-    if ((ppa = us->ppa) == 0) {
-	freemsg(mp);
-	return 0;
-    }
-
-#ifdef FILTER_PACKETS
-    pass = ip_hard_filter(us, mp, outbound);
-#else
-    /*
-     * Here is where we might, in future, decide whether to pass
-     * or drop the packet, and whether it counts as link activity.
-     */
-    pass = 1;
-#endif /* FILTER_PACKETS */
-
-    if (pass < 0) {
-	/* pass only if link already up, and don't update time */
-	if (ppa->lowerq == 0) {
-	    freemsg(mp);
-	    return 0;
-	}
-	pass = 1;
-    } else if (pass) {
-	if (outbound)
-	    ppa->last_sent = time;
-	else
-	    ppa->last_recv = time;
-    }
-
-    return pass;
-}
-
-/*
- * We have some data to send down to the lower stream (or up the
- * control stream, if we don't have a lower stream attached).
- * Returns 1 if the message was dealt with, 0 if it wasn't able
- * to be sent on and should therefore be queued up.
- */
-static int
-send_data(mp, us)
-    mblk_t *mp;
-    upperstr_t *us;
-{
-    upperstr_t *ppa;
-
-    if ((us->flags & US_BLOCKED) || us->npmode == NPMODE_QUEUE)
-	return 0;
-    ppa = us->ppa;
-    if (ppa == 0 || us->npmode == NPMODE_DROP || us->npmode == NPMODE_ERROR) {
-	if (us->flags & US_DBGLOG)
-	    DPRINT2("ppp/%d: dropping pkt (npmode=%d)\n", us->mn, us->npmode);
-	freemsg(mp);
-	return 1;
-    }
-    if (ppa->lowerq == 0) {
-	/* try to send it up the control stream */
-        if (bcanputnext(ppa->q, mp->b_band)) {
-	    /*
-	     * The message seems to get corrupted for some reason if
-	     * we just send the message up as it is, so we send a copy.
-	     */
-	    mblk_t *np = copymsg(mp);
-	    freemsg(mp);
-	    if (np != 0)
-		putnext(ppa->q, np);
-	    return 1;
-	}
-    } else {
-        if (bcanputnext(ppa->lowerq, mp->b_band)) {
-	    MT_ENTER(&ppa->stats_lock);
-	    ppa->stats.ppp_opackets++;
-	    ppa->stats.ppp_obytes += msgdsize(mp);
-#ifdef INCR_OPACKETS
-	    INCR_OPACKETS(ppa);
-#endif
-	    MT_EXIT(&ppa->stats_lock);
-	    /*
-	     * The lower queue is only ever detached while holding an
-	     * exclusive lock on the whole driver.  So we can be confident
-	     * that the lower queue is still there.
-	     */
-	    putnext(ppa->lowerq, mp);
-	    return 1;
-	}
-    }
-    us->flags |= US_BLOCKED;
-    return 0;
-}
-
-/*
- * Allocate a new PPA id and link this stream into the list of PPAs.
- * This procedure is called with an exclusive lock on all queues in
- * this driver.
- */
-static void
-new_ppa(q, mp)
-    queue_t *q;
-    mblk_t *mp;
-{
-    upperstr_t *us, *up, **usp;
-    int ppa_id;
-
-    us = (upperstr_t *) q->q_ptr;
-    if (us == 0) {
-	DPRINT("new_ppa: q_ptr = 0!\n");
-	return;
-    }
-
-    usp = &ppas;
-    ppa_id = 0;
-    while ((up = *usp) != 0 && ppa_id == up->ppa_id) {
-	++ppa_id;
-	usp = &up->nextppa;
-    }
-    us->ppa_id = ppa_id;
-    us->ppa = us;
-    us->next = 0;
-    us->nextppa = *usp;
-    *usp = us;
-    us->flags |= US_CONTROL;
-    us->npmode = NPMODE_PASS;
-
-    us->mtu = PPP_MTU;
-    us->mru = PPP_MRU;
-
-#ifdef SOL2
-    /*
-     * Create a kstats record for our statistics, so netstat -i works.
-     */
-    if (us->kstats == 0) {
-	char unit[32];
-
-	sprintf(unit, "ppp%d", us->ppa->ppa_id);
-	us->kstats = kstat_create("ppp", us->ppa->ppa_id, unit,
-				  "net", KSTAT_TYPE_NAMED, 4, 0);
-	if (us->kstats != 0) {
-	    kstat_named_t *kn = KSTAT_NAMED_PTR(us->kstats);
-
-	    strcpy(kn[0].name, "ipackets");
-	    kn[0].data_type = KSTAT_DATA_ULONG;
-	    strcpy(kn[1].name, "ierrors");
-	    kn[1].data_type = KSTAT_DATA_ULONG;
-	    strcpy(kn[2].name, "opackets");
-	    kn[2].data_type = KSTAT_DATA_ULONG;
-	    strcpy(kn[3].name, "oerrors");
-	    kn[3].data_type = KSTAT_DATA_ULONG;
-	    kstat_install(us->kstats);
-	}
-    }
-#endif /* SOL2 */
-
-    *(int *)mp->b_cont->b_rptr = ppa_id;
-    mp->b_datap->db_type = M_IOCACK;
-    qreply(q, mp);
-}
-
-static void
-attach_ppa(q, mp)
-    queue_t *q;
-    mblk_t *mp;
-{
-    upperstr_t *us, *t;
-
-    us = (upperstr_t *) q->q_ptr;
-    if (us == 0) {
-	DPRINT("attach_ppa: q_ptr = 0!\n");
-	return;
-    }
-
-#ifndef NO_DLPI
-    us->state = DL_UNBOUND;
-#endif
-    for (t = us->ppa; t->next != 0; t = t->next)
-	;
-    t->next = us;
-    us->next = 0;
-    if (mp->b_datap->db_type == M_IOCTL) {
-	mp->b_datap->db_type = M_IOCACK;
-	qreply(q, mp);
-    } else {
-#ifndef NO_DLPI
-	dlpi_ok(q, DL_ATTACH_REQ);
-#endif
-    }
-}
-
-static void
-detach_ppa(q, mp)
-    queue_t *q;
-    mblk_t *mp;
-{
-    upperstr_t *us, *t;
-
-    us = (upperstr_t *) q->q_ptr;
-    if (us == 0) {
-	DPRINT("detach_ppa: q_ptr = 0!\n");
-	return;
-    }
-
-    for (t = us->ppa; t->next != 0; t = t->next)
-	if (t->next == us) {
-	    t->next = us->next;
-	    break;
-	}
-    us->next = 0;
-    us->ppa = 0;
-#ifndef NO_DLPI
-    us->state = DL_UNATTACHED;
-    dlpi_ok(q, DL_DETACH_REQ);
-#endif
-}
-
-/*
- * We call this with qwriter in order to give the upper queue procedures
- * the guarantee that the lower queue is not going to go away while
- * they are executing.
- */
-static void
-detach_lower(q, mp)
-    queue_t *q;
-    mblk_t *mp;
-{
-    upperstr_t *us;
-
-    us = (upperstr_t *) q->q_ptr;
-    if (us == 0) {
-	DPRINT("detach_lower: q_ptr = 0!\n");
-	return;
-    }
-
-    LOCK_LOWER_W;
-    us->lowerq->q_ptr = 0;
-    RD(us->lowerq)->q_ptr = 0;
-    us->lowerq = 0;
-    UNLOCK_LOWER;
-
-    /* Unblock streams which now feed back up the control stream. */
-    qenable(us->q);
-
-    mp->b_datap->db_type = M_IOCACK;
-    qreply(q, mp);
-}
-
-static int
-pppuwsrv(q)
-    queue_t *q;
-{
-    upperstr_t *us, *as;
-    mblk_t *mp;
-
-    us = (upperstr_t *) q->q_ptr;
-    if (us == 0) {
-	DPRINT("pppuwsrv: q_ptr = 0!\n");
-	return 0;
-    }
-
-    /*
-     * If this is a control stream, then this service procedure
-     * probably got enabled because of flow control in the lower
-     * stream being enabled (or because of the lower stream going
-     * away).  Therefore we enable the service procedure of all
-     * attached upper streams.
-     */
-    if (us->flags & US_CONTROL) {
-	for (as = us->next; as != 0; as = as->next)
-	    qenable(WR(as->q));
-    }
-
-    /* Try to send on any data queued here. */
-    us->flags &= ~US_BLOCKED;
-    while ((mp = getq(q)) != 0) {
-	if (!send_data(mp, us)) {
-	    putbq(q, mp);
-	    break;
-	}
-    }
-
-    return 0;
-}
-
-/* should never get called... */
-static int
-ppplwput(q, mp)
-    queue_t *q;
-    mblk_t *mp;
-{
-    putnext(q, mp);
-    return 0;
-}
-
-static int
-ppplwsrv(q)
-    queue_t *q;
-{
-    queue_t *uq;
-
-    /*
-     * Flow control has back-enabled this stream:
-     * enable the upper write service procedure for
-     * the upper control stream for this lower stream.
-     */
-    LOCK_LOWER_R;
-    uq = (queue_t *) q->q_ptr;
-    if (uq != 0)
-	qenable(uq);
-    UNLOCK_LOWER;
-    return 0;
-}
-
-/*
- * This should only get called for control streams.
- */
-static int
-pppurput(q, mp)
-    queue_t *q;
-    mblk_t *mp;
-{
-    upperstr_t *ppa, *us;
-    int proto, len;
-    struct iocblk *iop;
-
-    ppa = (upperstr_t *) q->q_ptr;
-    if (ppa == 0) {
-	DPRINT("pppurput: q_ptr = 0!\n");
-	return 0;
-    }
-
-    switch (mp->b_datap->db_type) {
-    case M_CTL:
-	MT_ENTER(&ppa->stats_lock);
-	switch (*mp->b_rptr) {
-	case PPPCTL_IERROR:
-#ifdef INCR_IERRORS
-	    INCR_IERRORS(ppa);
-#endif
-	    ppa->stats.ppp_ierrors++;
-	    break;
-	case PPPCTL_OERROR:
-#ifdef INCR_OERRORS
-	    INCR_OERRORS(ppa);
-#endif
-	    ppa->stats.ppp_oerrors++;
-	    break;
-	}
-	MT_EXIT(&ppa->stats_lock);
-	freemsg(mp);
-	break;
-
-    case M_IOCACK:
-    case M_IOCNAK:
-	/*
-	 * Attempt to match up the response with the stream
-	 * that the request came from.
-	 */
-	iop = (struct iocblk *) mp->b_rptr;
-	for (us = ppa; us != 0; us = us->next)
-	    if (us->ioc_id == iop->ioc_id)
-		break;
-	if (us == 0)
-	    freemsg(mp);
-	else
-	    putnext(us->q, mp);
-	break;
-
-    case M_HANGUP:
-	/*
-	 * The serial device has hung up.  We don't want to send
-	 * the M_HANGUP message up to pppd because that will stop
-	 * us from using the control stream any more.  Instead we
-	 * send a zero-length message as an end-of-file indication.
-	 */
-	freemsg(mp);
-	mp = allocb(1, BPRI_HI);
-	if (mp == 0) {
-	    DPRINT1("ppp/%d: couldn't allocate eof message!\n", ppa->mn);
-	    break;
-	}
-	putnext(ppa->q, mp);
-	break;
-
-    default:
-	if (mp->b_datap->db_type == M_DATA) {
-	    len = msgdsize(mp);
-	    if (mp->b_wptr - mp->b_rptr < PPP_HDRLEN) {
-		PULLUP(mp, PPP_HDRLEN);
-		if (mp == 0) {
-		    DPRINT1("ppp_urput: msgpullup failed (len=%d)\n", len);
-		    break;
-		}
-	    }
-	    MT_ENTER(&ppa->stats_lock);
-	    ppa->stats.ppp_ipackets++;
-	    ppa->stats.ppp_ibytes += len;
-#ifdef INCR_IPACKETS
-	    INCR_IPACKETS(ppa);
-#endif
-	    MT_EXIT(&ppa->stats_lock);
-
-	    proto = PPP_PROTOCOL(mp->b_rptr);
-
-#if defined(SOL2)
-	    /*
-	     * Should there be any promiscuous stream(s), send the data
-	     * up for each promiscuous stream that we recognize.
-	     */
-	    promisc_sendup(ppa, mp, proto, 1);
-#endif /* defined(SOL2) */
-
-	    if (proto < 0x8000 && (us = find_dest(ppa, proto)) != 0) {
-		/*
-		 * A data packet for some network protocol.
-		 * Queue it on the upper stream for that protocol.
-		 * XXX could we just putnext it?  (would require thought)
-		 * The rblocked flag is there to ensure that we keep
-		 * messages in order for each network protocol.
-		 */
-		if (!pass_packet(us, mp, 0))
-		    break;
-		if (!us->rblocked && !canput(us->q))
-		    us->rblocked = 1;
-		if (!us->rblocked)
-		    putq(us->q, mp);
-		else
-		    putq(q, mp);
-		break;
-	    }
-	}
-	/*
-	 * A control frame, a frame for an unknown protocol,
-	 * or some other message type.
-	 * Send it up to pppd via the control stream.
-	 */
-	if (queclass(mp) == QPCTL || canputnext(ppa->q))
-	    putnext(ppa->q, mp);
-	else
-	    putq(q, mp);
-	break;
-    }
-
-    return 0;
-}
-
-static int
-pppursrv(q)
-    queue_t *q;
-{
-    upperstr_t *us, *as;
-    mblk_t *mp, *hdr;
-#ifndef NO_DLPI
-    dl_unitdata_ind_t *ud;
-#endif
-    int proto;
-
-    us = (upperstr_t *) q->q_ptr;
-    if (us == 0) {
-	DPRINT("pppursrv: q_ptr = 0!\n");
-	return 0;
-    }
-
-    if (us->flags & US_CONTROL) {
-	/*
-	 * A control stream.
-	 * If there is no lower queue attached, run the write service
-	 * routines of other upper streams attached to this PPA.
-	 */
-	if (us->lowerq == 0) {
-	    as = us;
-	    do {
-		if (as->flags & US_BLOCKED)
-		    qenable(WR(as->q));
-		as = as->next;
-	    } while (as != 0);
-	}
-
-	/*
-	 * Messages get queued on this stream's read queue if they
-	 * can't be queued on the read queue of the attached stream
-	 * that they are destined for.  This is for flow control -
-	 * when this queue fills up, the lower read put procedure will
-	 * queue messages there and the flow control will propagate
-	 * down from there.
-	 */
-	while ((mp = getq(q)) != 0) {
-	    proto = PPP_PROTOCOL(mp->b_rptr);
-	    if (proto < 0x8000 && (as = find_dest(us, proto)) != 0) {
-		if (!canput(as->q))
-		    break;
-		putq(as->q, mp);
-	    } else {
-		if (!canputnext(q))
-		    break;
-		putnext(q, mp);
-	    }
-	}
-	if (mp) {
-	    putbq(q, mp);
-	} else {
-	    /* can now put stuff directly on network protocol streams again */
-	    for (as = us->next; as != 0; as = as->next)
-		as->rblocked = 0;
-	}
-
-	/*
-	 * If this stream has a lower stream attached,
-	 * enable the read queue's service routine.
-	 * XXX we should really only do this if the queue length
-	 * has dropped below the low-water mark.
-	 */
-	if (us->lowerq != 0)
-	    qenable(RD(us->lowerq));
-		
-    } else {
-	/*
-	 * A network protocol stream.  Put a DLPI header on each
-	 * packet and send it on.
-	 * (Actually, it seems that the IP module will happily
-	 * accept M_DATA messages without the DL_UNITDATA_IND header.)
-	 */
-	while ((mp = getq(q)) != 0) {
-	    if (!canputnext(q)) {
-		putbq(q, mp);
-		break;
-	    }
-#ifndef NO_DLPI
-	    proto = PPP_PROTOCOL(mp->b_rptr);
-	    mp->b_rptr += PPP_HDRLEN;
-	    hdr = allocb(sizeof(dl_unitdata_ind_t) + 2 * sizeof(uint),
-			 BPRI_MED);
-	    if (hdr == 0) {
-		/* XXX should put it back and use bufcall */
-		freemsg(mp);
-		continue;
-	    }
-	    hdr->b_datap->db_type = M_PROTO;
-	    ud = (dl_unitdata_ind_t *) hdr->b_wptr;
-	    hdr->b_wptr += sizeof(dl_unitdata_ind_t) + 2 * sizeof(uint);
-	    hdr->b_cont = mp;
-	    ud->dl_primitive = DL_UNITDATA_IND;
-	    ud->dl_dest_addr_length = sizeof(uint);
-	    ud->dl_dest_addr_offset = sizeof(dl_unitdata_ind_t);
-	    ud->dl_src_addr_length = sizeof(uint);
-	    ud->dl_src_addr_offset = ud->dl_dest_addr_offset + sizeof(uint);
-#if DL_CURRENT_VERSION >= 2
-	    ud->dl_group_address = 0;
-#endif
-	    /* Send the DLPI client the data with the SAP they requested,
-	       (e.g. ETHERTYPE_IP) rather than the PPP protocol number
-	       (e.g. PPP_IP) */
-	    ((uint *)(ud + 1))[0] = us->req_sap;	/* dest SAP */
-	    ((uint *)(ud + 1))[1] = us->req_sap;	/* src SAP */
-	    putnext(q, hdr);
-#else /* NO_DLPI */
-	    putnext(q, mp);
-#endif /* NO_DLPI */
-	}
-	/*
-	 * Now that we have consumed some packets from this queue,
-	 * enable the control stream's read service routine so that we
-	 * can process any packets for us that might have got queued
-	 * there for flow control reasons.
-	 */
-	if (us->ppa)
-	    qenable(us->ppa->q);
-    }
-
-    return 0;
-}
-
-static upperstr_t *
-find_dest(ppa, proto)
-    upperstr_t *ppa;
-    int proto;
-{
-    upperstr_t *us;
-
-    for (us = ppa->next; us != 0; us = us->next)
-	if (proto == us->sap)
-	    break;
-    return us;
-}
-
-#if defined (SOL2)
-/*
- * Test upstream promiscuous conditions. As of now, only pass IPv4 and
- * Ipv6 packets upstream (let PPP packets be decoded elsewhere).
- */
-static upperstr_t *
-find_promisc(us, proto)
-    upperstr_t *us;
-    int proto;
-{
-
-    if ((proto != PPP_IP) && (proto != PPP_IPV6))
-	return (upperstr_t *)0;
-
-    for ( ; us; us = us->next) {
-	if ((us->flags & US_PROMISC) && (us->state == DL_IDLE))
-	    return us;
-    }
-
-    return (upperstr_t *)0;
-}
-
-/*
- * Prepend an empty Ethernet header to msg for snoop, et al.
- */
-static mblk_t *
-prepend_ether(us, mp, proto)
-    upperstr_t *us;
-    mblk_t *mp;
-    int proto;
-{
-    mblk_t *eh;
-    int type;
-
-    if ((eh = allocb(sizeof(struct ether_header), BPRI_HI)) == 0) {
-	freemsg(mp);
-	return (mblk_t *)0;
-    }
-
-    if (proto == PPP_IP)
-	type = ETHERTYPE_IP;
-    else if (proto == PPP_IPV6)
-	type = ETHERTYPE_IPV6;
-    else 
-	type = proto;	    /* What else? Let decoder decide */
-
-    eh->b_wptr += sizeof(struct ether_header);
-    bzero((caddr_t)eh->b_rptr, sizeof(struct ether_header));
-    ((struct ether_header *)eh->b_rptr)->ether_type = htons((short)type);
-    eh->b_cont = mp;
-    return (eh);
-}
-
-/*
- * Prepend DL_UNITDATA_IND mblk to msg
- */
-static mblk_t *
-prepend_udind(us, mp, proto)
-    upperstr_t *us;
-    mblk_t *mp;
-    int proto;
-{
-    dl_unitdata_ind_t *dlu;
-    mblk_t *dh;
-    size_t size;
-
-    size = sizeof(dl_unitdata_ind_t);
-    if ((dh = allocb(size, BPRI_MED)) == 0) {
-	freemsg(mp);
-	return (mblk_t *)0;
-    }
-
-    dh->b_datap->db_type = M_PROTO;
-    dh->b_wptr = dh->b_datap->db_lim;
-    dh->b_rptr = dh->b_wptr - size;
-
-    dlu = (dl_unitdata_ind_t *)dh->b_rptr;
-    dlu->dl_primitive = DL_UNITDATA_IND;
-    dlu->dl_dest_addr_length = 0;
-    dlu->dl_dest_addr_offset = sizeof(dl_unitdata_ind_t);
-    dlu->dl_src_addr_length = 0;
-    dlu->dl_src_addr_offset = sizeof(dl_unitdata_ind_t);
-    dlu->dl_group_address = 0;
-
-    dh->b_cont = mp;
-    return (dh);
-}
-
-/*
- * For any recognized promiscuous streams, send data upstream
- */
-static void
-promisc_sendup(ppa, mp, proto, skip)
-    upperstr_t *ppa;
-    mblk_t *mp;
-    int proto, skip;
-{
-    mblk_t *dup_mp, *dup_dup_mp;
-    upperstr_t *prus, *nprus;
-
-    if ((prus = find_promisc(ppa, proto)) != 0) {
-	if (dup_mp = dupmsg(mp)) {
-
-	    if (skip)
-		dup_mp->b_rptr += PPP_HDRLEN;
-
-	    for ( ; nprus = find_promisc(prus->next, proto); 
-		    prus = nprus) {
-
-		if (dup_dup_mp = dupmsg(dup_mp)) {
-		    if (canputnext(prus->q)) {
-			if (prus->flags & US_RAWDATA) {
-			    dup_dup_mp = prepend_ether(prus, dup_dup_mp, proto);
-			    putnext(prus->q, dup_dup_mp);
-			} else {
-			    dup_dup_mp = prepend_udind(prus, dup_dup_mp, proto);
-			    putnext(prus->q, dup_dup_mp);
-			}
-		    } else {
-			DPRINT("ppp_urput: data to promisc q dropped\n");
-			freemsg(dup_dup_mp);
-		    }
-		}
-	    }
-
-	    if (canputnext(prus->q)) {
-		if (prus->flags & US_RAWDATA) {
-		    dup_mp = prepend_ether(prus, dup_mp, proto);
-		    putnext(prus->q, dup_mp);
-		} else {
-		    dup_mp = prepend_udind(prus, dup_mp, proto);
-		    putnext(prus->q, dup_mp);
-		}
-	    } else {
-		DPRINT("ppp_urput: data to promisc q dropped\n");
-		freemsg(dup_mp);
-	    }
-	}
-    }
-}
-#endif /* defined(SOL2) */
-
-/*
- * We simply put the message on to the associated upper control stream
- * (either here or in ppplrsrv).  That way we enter the perimeters
- * before looking through the list of attached streams to decide which
- * stream it should go up.
- */
-static int
-ppplrput(q, mp)
-    queue_t *q;
-    mblk_t *mp;
-{
-    queue_t *uq;
-    struct iocblk *iop;
-
-    switch (mp->b_datap->db_type) {
-    case M_IOCTL:
-	iop = (struct iocblk *) mp->b_rptr;
-	iop->ioc_error = EINVAL;
-	mp->b_datap->db_type = M_IOCNAK;
-	qreply(q, mp);
-	return 0;
-    case M_FLUSH:
-	if (*mp->b_rptr & FLUSHR)
-	    flushq(q, FLUSHDATA);
-	if (*mp->b_rptr & FLUSHW) {
-	    *mp->b_rptr &= ~FLUSHR;
-	    qreply(q, mp);
-	} else
-	    freemsg(mp);
-	return 0;
-    }
-
-    /*
-     * If we can't get the lower lock straight away, queue this one
-     * rather than blocking, to avoid the possibility of deadlock.
-     */
-    if (!TRYLOCK_LOWER_R) {
-	putq(q, mp);
-	return 0;
-    }
-
-    /*
-     * Check that we're still connected to the driver.
-     */
-    uq = (queue_t *) q->q_ptr;
-    if (uq == 0) {
-	UNLOCK_LOWER;
-	DPRINT1("ppplrput: q = %x, uq = 0??\n", q);
-	freemsg(mp);
-	return 0;
-    }
-
-    /*
-     * Try to forward the message to the put routine for the upper
-     * control stream for this lower stream.
-     * If there are already messages queued here, queue this one so
-     * they don't get out of order.
-     */
-    if (queclass(mp) == QPCTL || (qsize(q) == 0 && canput(uq)))
-	put(uq, mp);
-    else
-	putq(q, mp);
-
-    UNLOCK_LOWER;
-    return 0;
-}
-
-static int
-ppplrsrv(q)
-    queue_t *q;
-{
-    mblk_t *mp;
-    queue_t *uq;
-
-    /*
-     * Packets get queued here for flow control reasons
-     * or if the lrput routine couldn't get the lower lock
-     * without blocking.
-     */
-    LOCK_LOWER_R;
-    uq = (queue_t *) q->q_ptr;
-    if (uq == 0) {
-	UNLOCK_LOWER;
-	flushq(q, FLUSHALL);
-	DPRINT1("ppplrsrv: q = %x, uq = 0??\n", q);
-	return 0;
-    }
-    while ((mp = getq(q)) != 0) {
-	if (queclass(mp) == QPCTL || canput(uq))
-	    put(uq, mp);
-	else {
-	    putbq(q, mp);
-	    break;
-	}
-    }
-    UNLOCK_LOWER;
-    return 0;
-}
-
-static int
-putctl2(q, type, code, val)
-    queue_t *q;
-    int type, code, val;
-{
-    mblk_t *mp;
-
-    mp = allocb(2, BPRI_HI);
-    if (mp == 0)
-	return 0;
-    mp->b_datap->db_type = type;
-    mp->b_wptr[0] = code;
-    mp->b_wptr[1] = val;
-    mp->b_wptr += 2;
-    putnext(q, mp);
-    return 1;
-}
-
-static int
-putctl4(q, type, code, val)
-    queue_t *q;
-    int type, code, val;
-{
-    mblk_t *mp;
-
-    mp = allocb(4, BPRI_HI);
-    if (mp == 0)
-	return 0;
-    mp->b_datap->db_type = type;
-    mp->b_wptr[0] = code;
-    ((short *)mp->b_wptr)[1] = val;
-    mp->b_wptr += 4;
-    putnext(q, mp);
-    return 1;
-}
-
-static void
-debug_dump(q, mp)
-    queue_t *q;
-    mblk_t *mp;
-{
-    upperstr_t *us;
-    queue_t *uq, *lq;
-
-    DPRINT("ppp upper streams:\n");
-    for (us = minor_devs; us != 0; us = us->nextmn) {
-	uq = us->q;
-	DPRINT3(" %d: q=%x rlev=%d",
-		us->mn, uq, (uq? qsize(uq): 0));
-	DPRINT3(" wlev=%d flags=0x%b", (uq? qsize(WR(uq)): 0),
-		us->flags, "\020\1priv\2control\3blocked\4last");
-	DPRINT3(" state=%x sap=%x req_sap=%x", us->state, us->sap,
-		us->req_sap);
-	if (us->ppa == 0)
-	    DPRINT(" ppa=?\n");
-	else
-	    DPRINT1(" ppa=%d\n", us->ppa->ppa_id);
-	if (us->flags & US_CONTROL) {
-	    lq = us->lowerq;
-	    DPRINT3("    control for %d lq=%x rlev=%d",
-		    us->ppa_id, lq, (lq? qsize(RD(lq)): 0));
-	    DPRINT3(" wlev=%d mru=%d mtu=%d\n",
-		    (lq? qsize(lq): 0), us->mru, us->mtu);
-	}
-    }
-    mp->b_datap->db_type = M_IOCACK;
-    qreply(q, mp);
-}
-
-#ifdef FILTER_PACKETS
-#include <netinet/in_systm.h>
-#include <netinet/ip.h>
-#include <netinet/udp.h>
-#include <netinet/tcp.h>
-
-#define MAX_IPHDR    128     /* max TCP/IP header size */
-
-
-/* The following table contains a hard-coded list of protocol/port pairs.
- * Any matching packets are either discarded unconditionally, or, 
- * if ok_if_link_up is non-zero when a connection does not currently exist
- * (i.e., they go through if the connection is present, but never initiate
- * a dial-out).
- * This idea came from a post by dm@garage.uun.org (David Mazieres)
- */
-static struct pktfilt_tab { 
-	int proto; 
-	u_short port; 
-	u_short ok_if_link_up; 
-} pktfilt_tab[] = {
-	{ IPPROTO_UDP,	520,	1 },	/* RIP, ok to pass if link is up */
-	{ IPPROTO_UDP,	123,	1 },	/* NTP, don't keep up the link for it */
-	{ -1, 		0,	0 }	/* terminator entry has port == -1 */
-};
-
-
-static int
-ip_hard_filter(us, mp, outbound)
-    upperstr_t *us;
-    mblk_t *mp;
-    int outbound;
-{
-    struct ip *ip;
-    struct pktfilt_tab *pft;
-    mblk_t *temp_mp;
-    int proto;
-    int len, hlen;
-
-
-    /* Note, the PPP header has already been pulled up in all cases */
-    proto = PPP_PROTOCOL(mp->b_rptr);
-    if (us->flags & US_DBGLOG)
-        DPRINT3("ppp/%d: filter, proto=0x%x, out=%d\n", us->mn, proto, outbound);
-
-    switch (proto)
-    {
-    case PPP_IP:
-	if ((mp->b_wptr - mp->b_rptr) == PPP_HDRLEN && mp->b_cont != 0) {
-	    temp_mp = mp->b_cont;
-    	    len = msgdsize(temp_mp);
-	    hlen = (len < MAX_IPHDR) ? len : MAX_IPHDR;
-	    PULLUP(temp_mp, hlen);
-	    if (temp_mp == 0) {
-		DPRINT2("ppp/%d: filter, pullup next failed, len=%d\n", 
-			us->mn, hlen);
-		mp->b_cont = 0;		/* PULLUP() freed the rest */
-	        freemsg(mp);
-	        return 0;
-	    }
-	    ip = (struct ip *)mp->b_cont->b_rptr;
-	}
-	else {
-	    len = msgdsize(mp);
-	    hlen = (len < (PPP_HDRLEN+MAX_IPHDR)) ? len : (PPP_HDRLEN+MAX_IPHDR);
-	    PULLUP(mp, hlen);
-	    if (mp == 0) {
-		DPRINT2("ppp/%d: filter, pullup failed, len=%d\n", 
-			us->mn, hlen);
-	        return 0;
-	    }
-	    ip = (struct ip *)(mp->b_rptr + PPP_HDRLEN);
-	}
-
-	/* For IP traffic, certain packets (e.g., RIP) may be either
-	 *   1.  ignored - dropped completely
-	 *   2.  will not initiate a connection, but
-	 *       will be passed if a connection is currently up.
-	 */
-	for (pft=pktfilt_tab; pft->proto != -1; pft++) {
-	    if (ip->ip_p == pft->proto) {
-		switch(pft->proto) {
-		case IPPROTO_UDP:
-		    if (((struct udphdr *) &((int *)ip)[ip->ip_hl])->uh_dport
-				== htons(pft->port)) goto endfor;
-		    break;
-		case IPPROTO_TCP:
-		    if (((struct tcphdr *) &((int *)ip)[ip->ip_hl])->th_dport
-				== htons(pft->port)) goto endfor;
-		    break;
-		}	
-	    }
-	}
-	endfor:
-	if (pft->proto != -1) {
-	    if (us->flags & US_DBGLOG)
-		DPRINT3("ppp/%d: found IP pkt, proto=0x%x (%d)\n", 
-				us->mn, pft->proto, pft->port);
-	    /* Discard if not connected, or if not pass_with_link_up */
-	    /* else, if link is up let go by, but don't update time */
-	    return pft->ok_if_link_up? -1: 0;
-	}
-        break;
-    } /* end switch (proto) */
-
-    return 1;
-}
-#endif /* FILTER_PACKETS */
-
diff --git a/mdk-stage1/ppp/solaris/ppp.conf b/mdk-stage1/ppp/solaris/ppp.conf
deleted file mode 100644
index e443a7aac..000000000
--- a/mdk-stage1/ppp/solaris/ppp.conf
+++ /dev/null
@@ -1 +0,0 @@
-name="ppp" parent="pseudo" instance=0;
diff --git a/mdk-stage1/ppp/solaris/ppp_ahdlc.c b/mdk-stage1/ppp/solaris/ppp_ahdlc.c
deleted file mode 100644
index d0b961258..000000000
--- a/mdk-stage1/ppp/solaris/ppp_ahdlc.c
+++ /dev/null
@@ -1,878 +0,0 @@
-/*
- * ppp_ahdlc.c - STREAMS module for doing PPP asynchronous HDLC.
- *
- * Re-written by Adi Masputra <adi.masputra@sun.com>, based on 
- * the original ppp_ahdlc.c
- *
- * Copyright (c) 2000 by Sun Microsystems, Inc.
- * All rights reserved.
- *
- * Permission to use, copy, modify, and distribute this software and its
- * documentation is hereby granted, provided that the above copyright
- * notice appears in all copies.  
- *
- * SUN MAKES NO REPRESENTATION OR WARRANTIES ABOUT THE SUITABILITY OF
- * THE SOFTWARE, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
- * TO THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
- * PARTICULAR PURPOSE, OR NON-INFRINGEMENT.  SUN SHALL NOT BE LIABLE FOR
- * ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
- * DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES
- *
- * Copyright (c) 1994 The Australian National University.
- * All rights reserved.
- *
- * Permission to use, copy, modify, and distribute this software and its
- * documentation is hereby granted, provided that the above copyright
- * notice appears in all copies.  This software is provided without any
- * warranty, express or implied. The Australian National University
- * makes no representations about the suitability of this software for
- * any purpose.
- *
- * IN NO EVENT SHALL THE AUSTRALIAN NATIONAL UNIVERSITY BE LIABLE TO ANY
- * PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
- * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF
- * THE AUSTRALIAN NATIONAL UNIVERSITY HAS BEEN ADVISED OF THE POSSIBILITY
- * OF SUCH DAMAGE.
- *
- * THE AUSTRALIAN NATIONAL UNIVERSITY SPECIFICALLY DISCLAIMS ANY WARRANTIES,
- * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
- * AND FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
- * ON AN "AS IS" BASIS, AND THE AUSTRALIAN NATIONAL UNIVERSITY HAS NO
- * OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS,
- * OR MODIFICATIONS.
- *
- * $Id$
- */
-
-/*
- * This file is used under Solaris 2, SVR4, SunOS 4, and Digital UNIX.
- */
-#include <sys/types.h>
-#include <sys/param.h>
-#include <sys/stream.h>
-#include <sys/errno.h>
-
-#ifdef SVR4
-#include <sys/conf.h>
-#include <sys/kmem.h>
-#include <sys/cmn_err.h>
-#include <sys/ddi.h>
-#else
-#include <sys/user.h>
-#ifdef __osf__
-#include <sys/cmn_err.h>
-#endif
-#endif /* SVR4 */
-
-#include <net/ppp_defs.h>
-#include <net/pppio.h>
-#include "ppp_mod.h"
-
-/*
- * Right now, mutex is only enabled for Solaris 2.x
- */
-#if defined(SOL2)
-#define USE_MUTEX
-#endif /* SOL2 */
-
-/*
- * intpointer_t and uintpointer_t are signed and unsigned integer types 
- * large enough to hold any data pointer; that is, data pointers can be 
- * assigned into or from these integer types without losing precision.
- * On recent Solaris releases, these types are defined in sys/int_types.h,
- * but not on SunOS 4.x or the earlier Solaris versions.
- */
-#if defined(_LP64) || defined(_I32LPx)
-typedef long                    intpointer_t;
-typedef unsigned long           uintpointer_t;
-#else
-typedef int                     intpointer_t;
-typedef unsigned int            uintpointer_t;
-#endif
-
-MOD_OPEN_DECL(ahdlc_open);
-MOD_CLOSE_DECL(ahdlc_close);
-static int ahdlc_wput __P((queue_t *, mblk_t *));
-static int ahdlc_rput __P((queue_t *, mblk_t *));
-static void ahdlc_encode __P((queue_t *, mblk_t *));
-static void ahdlc_decode __P((queue_t *, mblk_t *));
-static int msg_byte __P((mblk_t *, unsigned int));
-
-#if defined(SOL2)
-/*
- * Don't send HDLC start flag is last transmit is within 1.5 seconds -
- * FLAG_TIME is defined is microseconds
- */
-#define FLAG_TIME   1500
-#define ABS(x)	    (x >= 0 ? x : (-x))
-#endif /* SOL2 */
-
-/*
- * Extract byte i of message mp 
- */
-#define MSG_BYTE(mp, i)	((i) < (mp)->b_wptr - (mp)->b_rptr? (mp)->b_rptr[i]: \
-			 msg_byte((mp), (i)))
-
-/* 
- * Is this LCP packet one we have to transmit using LCP defaults? 
- */
-#define LCP_USE_DFLT(mp)	(1 <= (code = MSG_BYTE((mp), 4)) && code <= 7)
-
-/*
- * Standard STREAMS declarations
- */
-static struct module_info minfo = {
-    0x7d23, "ppp_ahdl", 0, INFPSZ, 32768, 512
-};
-
-static struct qinit rinit = {
-    ahdlc_rput, NULL, ahdlc_open, ahdlc_close, NULL, &minfo, NULL
-};
-
-static struct qinit winit = {
-    ahdlc_wput, NULL, NULL, NULL, NULL, &minfo, NULL
-};
-
-#if defined(SVR4) && !defined(SOL2)
-int phdldevflag = 0;
-#define ppp_ahdlcinfo phdlinfo
-#endif /* defined(SVR4) && !defined(SOL2) */
-
-struct streamtab ppp_ahdlcinfo = {
-    &rinit,			    /* ptr to st_rdinit */
-    &winit,			    /* ptr to st_wrinit */
-    NULL,			    /* ptr to st_muxrinit */
-    NULL,			    /* ptr to st_muxwinit */
-#if defined(SUNOS4)
-    NULL			    /* ptr to ptr to st_modlist */
-#endif /* SUNOS4 */
-};
-
-#if defined(SUNOS4)
-int ppp_ahdlc_count = 0;	    /* open counter */
-#endif /* SUNOS4 */
-
-/*
- * Per-stream state structure
- */
-typedef struct ahdlc_state {
-#if defined(USE_MUTEX)
-    kmutex_t	    lock;		    /* lock for this structure */
-#endif /* USE_MUTEX */
-    int		    flags;		    /* link flags */
-    mblk_t	    *rx_buf;		    /* ptr to receive buffer */
-    int		    rx_buf_size;	    /* receive buffer size */
-    ushort_t	    infcs;		    /* calculated rx HDLC FCS */
-    u_int32_t	    xaccm[8];		    /* 256-bit xmit ACCM */
-    u_int32_t	    raccm;		    /* 32-bit rcv ACCM */
-    int		    mtu;		    /* interface MTU */
-    int		    mru;		    /* link MRU */
-    int		    unit;		    /* current PPP unit number */
-    struct pppstat  stats;		    /* statistic structure */
-#if defined(SOL2)
-    clock_t	    flag_time;		    /* time in usec between flags */
-    clock_t	    lbolt;		    /* last updated lbolt */
-#endif /* SOL2 */
-} ahdlc_state_t;
-
-/*
- * Values for flags 
- */
-#define ESCAPED		0x100	/* last saw escape char on input */
-#define IFLUSH		0x200	/* flushing input due to error */
-
-/* 
- * RCV_B7_1, etc., defined in net/pppio.h, are stored in flags also. 
- */
-#define RCV_FLAGS	(RCV_B7_1|RCV_B7_0|RCV_ODDP|RCV_EVNP)
-
-/*
- * FCS lookup table as calculated by genfcstab.
- */
-static u_short fcstab[256] = {
-	0x0000,	0x1189,	0x2312,	0x329b,	0x4624,	0x57ad,	0x6536,	0x74bf,
-	0x8c48,	0x9dc1,	0xaf5a,	0xbed3,	0xca6c,	0xdbe5,	0xe97e,	0xf8f7,
-	0x1081,	0x0108,	0x3393,	0x221a,	0x56a5,	0x472c,	0x75b7,	0x643e,
-	0x9cc9,	0x8d40,	0xbfdb,	0xae52,	0xdaed,	0xcb64,	0xf9ff,	0xe876,
-	0x2102,	0x308b,	0x0210,	0x1399,	0x6726,	0x76af,	0x4434,	0x55bd,
-	0xad4a,	0xbcc3,	0x8e58,	0x9fd1,	0xeb6e,	0xfae7,	0xc87c,	0xd9f5,
-	0x3183,	0x200a,	0x1291,	0x0318,	0x77a7,	0x662e,	0x54b5,	0x453c,
-	0xbdcb,	0xac42,	0x9ed9,	0x8f50,	0xfbef,	0xea66,	0xd8fd,	0xc974,
-	0x4204,	0x538d,	0x6116,	0x709f,	0x0420,	0x15a9,	0x2732,	0x36bb,
-	0xce4c,	0xdfc5,	0xed5e,	0xfcd7,	0x8868,	0x99e1,	0xab7a,	0xbaf3,
-	0x5285,	0x430c,	0x7197,	0x601e,	0x14a1,	0x0528,	0x37b3,	0x263a,
-	0xdecd,	0xcf44,	0xfddf,	0xec56,	0x98e9,	0x8960,	0xbbfb,	0xaa72,
-	0x6306,	0x728f,	0x4014,	0x519d,	0x2522,	0x34ab,	0x0630,	0x17b9,
-	0xef4e,	0xfec7,	0xcc5c,	0xddd5,	0xa96a,	0xb8e3,	0x8a78,	0x9bf1,
-	0x7387,	0x620e,	0x5095,	0x411c,	0x35a3,	0x242a,	0x16b1,	0x0738,
-	0xffcf,	0xee46,	0xdcdd,	0xcd54,	0xb9eb,	0xa862,	0x9af9,	0x8b70,
-	0x8408,	0x9581,	0xa71a,	0xb693,	0xc22c,	0xd3a5,	0xe13e,	0xf0b7,
-	0x0840,	0x19c9,	0x2b52,	0x3adb,	0x4e64,	0x5fed,	0x6d76,	0x7cff,
-	0x9489,	0x8500,	0xb79b,	0xa612,	0xd2ad,	0xc324,	0xf1bf,	0xe036,
-	0x18c1,	0x0948,	0x3bd3,	0x2a5a,	0x5ee5,	0x4f6c,	0x7df7,	0x6c7e,
-	0xa50a,	0xb483,	0x8618,	0x9791,	0xe32e,	0xf2a7,	0xc03c,	0xd1b5,
-	0x2942,	0x38cb,	0x0a50,	0x1bd9,	0x6f66,	0x7eef,	0x4c74,	0x5dfd,
-	0xb58b,	0xa402,	0x9699,	0x8710,	0xf3af,	0xe226,	0xd0bd,	0xc134,
-	0x39c3,	0x284a,	0x1ad1,	0x0b58,	0x7fe7,	0x6e6e,	0x5cf5,	0x4d7c,
-	0xc60c,	0xd785,	0xe51e,	0xf497,	0x8028,	0x91a1,	0xa33a,	0xb2b3,
-	0x4a44,	0x5bcd,	0x6956,	0x78df,	0x0c60,	0x1de9,	0x2f72,	0x3efb,
-	0xd68d,	0xc704,	0xf59f,	0xe416,	0x90a9,	0x8120,	0xb3bb,	0xa232,
-	0x5ac5,	0x4b4c,	0x79d7,	0x685e,	0x1ce1,	0x0d68,	0x3ff3,	0x2e7a,
-	0xe70e,	0xf687,	0xc41c,	0xd595,	0xa12a,	0xb0a3,	0x8238,	0x93b1,
-	0x6b46,	0x7acf,	0x4854,	0x59dd,	0x2d62,	0x3ceb,	0x0e70,	0x1ff9,
-	0xf78f,	0xe606,	0xd49d,	0xc514,	0xb1ab,	0xa022,	0x92b9,	0x8330,
-	0x7bc7,	0x6a4e,	0x58d5,	0x495c,	0x3de3,	0x2c6a,	0x1ef1,	0x0f78
-};
-
-static u_int32_t paritytab[8] =
-{
-	0x96696996, 0x69969669, 0x69969669, 0x96696996,
-	0x69969669, 0x96696996, 0x96696996, 0x69969669
-};
-
-/*
- * STREAMS module open (entry) point
- */
-MOD_OPEN(ahdlc_open)
-{
-    ahdlc_state_t   *state;
-
-    /*
-     * Return if it's already opened
-     */
-    if (q->q_ptr) {
-	return 0;
-    }
-
-    /*
-     * This can only be opened as a module
-     */
-    if (sflag != MODOPEN) {
-	return 0;
-    }
-
-    state = (ahdlc_state_t *) ALLOC_NOSLEEP(sizeof(ahdlc_state_t));
-    if (state == 0)
-	OPEN_ERROR(ENOSR);
-    bzero((caddr_t) state, sizeof(ahdlc_state_t));
-
-    q->q_ptr	 = (caddr_t) state;
-    WR(q)->q_ptr = (caddr_t) state;
-
-#if defined(USE_MUTEX)
-    mutex_init(&state->lock, NULL, MUTEX_DEFAULT, NULL);
-    mutex_enter(&state->lock);
-#endif /* USE_MUTEX */
-
-    state->xaccm[0] = ~0;	    /* escape 0x00 through 0x1f */
-    state->xaccm[3] = 0x60000000;   /* escape 0x7d and 0x7e */
-    state->mru	    = PPP_MRU;	    /* default of 1500 bytes */
-#if defined(SOL2)
-    state->flag_time = drv_usectohz(FLAG_TIME);
-#endif /* SOL2 */
-
-#if defined(USE_MUTEX)
-    mutex_exit(&state->lock);
-#endif /* USE_MUTEX */	
-
-#if defined(SUNOS4)
-    ppp_ahdlc_count++;
-#endif /* SUNOS4 */
-
-    qprocson(q);
-    
-    return 0;
-}
-
-/*
- * STREAMS module close (exit) point
- */
-MOD_CLOSE(ahdlc_close)
-{
-    ahdlc_state_t   *state;
-
-    qprocsoff(q);
-
-    state = (ahdlc_state_t *) q->q_ptr;
-
-    if (state == 0) {
-	DPRINT("state == 0 in ahdlc_close\n");
-	return 0;
-    }
-
-#if defined(USE_MUTEX)
-    mutex_enter(&state->lock);
-#endif /* USE_MUTEX */
-
-    if (state->rx_buf != 0) {
-	freemsg(state->rx_buf);
-	state->rx_buf = 0;
-    }
-
-#if defined(USE_MUTEX)
-    mutex_exit(&state->lock);
-    mutex_destroy(&state->lock);
-#endif /* USE_MUTEX */
-
-    FREE(q->q_ptr, sizeof(ahdlc_state_t));
-    q->q_ptr	     = NULL;
-    OTHERQ(q)->q_ptr = NULL;
-
-#if defined(SUNOS4)
-    if (ppp_ahdlc_count)
-	ppp_ahdlc_count--;
-#endif /* SUNOS4 */
-    
-    return 0;
-}
-
-/*
- * Write side put routine
- */
-static int
-ahdlc_wput(q, mp)
-    queue_t	*q;
-    mblk_t	*mp;
-{
-    ahdlc_state_t  	*state;
-    struct iocblk  	*iop;
-    int		   	error;
-    mblk_t	   	*np;
-    struct ppp_stats	*psp;
-
-    state = (ahdlc_state_t *) q->q_ptr;
-    if (state == 0) {
-	DPRINT("state == 0 in ahdlc_wput\n");
-	freemsg(mp);
-	return 0;
-    }
-
-    switch (mp->b_datap->db_type) {
-    case M_DATA:
-	/*
-	 * A data packet - do character-stuffing and FCS, and
-	 * send it onwards.
-	 */
-	ahdlc_encode(q, mp);
-	freemsg(mp);
-	break;
-
-    case M_IOCTL:
-	iop = (struct iocblk *) mp->b_rptr;
-	error = EINVAL;
-	switch (iop->ioc_cmd) {
-	case PPPIO_XACCM:
-	    if ((iop->ioc_count < sizeof(u_int32_t)) || 
-		(iop->ioc_count > sizeof(ext_accm))) {
-		break;
-	    }
-	    if (mp->b_cont == 0) {
-		DPRINT1("ahdlc_wput/%d: PPPIO_XACCM b_cont = 0!\n", state->unit);
-		break;
-	    }
-#if defined(USE_MUTEX)
-	    mutex_enter(&state->lock);
-#endif /* USE_MUTEX */
-	    bcopy((caddr_t)mp->b_cont->b_rptr, (caddr_t)state->xaccm,
-		  iop->ioc_count);
-	    state->xaccm[2] &= ~0x40000000;	/* don't escape 0x5e */
-	    state->xaccm[3] |= 0x60000000;	/* do escape 0x7d, 0x7e */
-#if defined(USE_MUTEX)
-	    mutex_exit(&state->lock);
-#endif /* USE_MUTEX */
-	    iop->ioc_count = 0;
-	    error = 0;
-	    break;
-
-	case PPPIO_RACCM:
-	    if (iop->ioc_count != sizeof(u_int32_t))
-		break;
-	    if (mp->b_cont == 0) {
-		DPRINT1("ahdlc_wput/%d: PPPIO_RACCM b_cont = 0!\n", state->unit);
-		break;
-	    }
-#if defined(USE_MUTEX)
-	    mutex_enter(&state->lock);
-#endif /* USE_MUTEX */
-	    bcopy((caddr_t)mp->b_cont->b_rptr, (caddr_t)&state->raccm,
-		  sizeof(u_int32_t));
-#if defined(USE_MUTEX)
-	    mutex_exit(&state->lock);
-#endif /* USE_MUTEX */
-	    iop->ioc_count = 0;
-	    error = 0;
-	    break;
-
-	case PPPIO_GCLEAN:
-	    np = allocb(sizeof(int), BPRI_HI);
-	    if (np == 0) {
-		error = ENOSR;
-		break;
-	    }
-	    if (mp->b_cont != 0)
-		freemsg(mp->b_cont);
-	    mp->b_cont = np;
-#if defined(USE_MUTEX)
-	    mutex_enter(&state->lock);
-#endif /* USE_MUTEX */
-	    *(int *)np->b_wptr = state->flags & RCV_FLAGS;
-#if defined(USE_MUTEX)
-	    mutex_exit(&state->lock);
-#endif /* USE_MUTEX */
-	    np->b_wptr += sizeof(int);
-	    iop->ioc_count = sizeof(int);
-	    error = 0;
-	    break;
-
-	case PPPIO_GETSTAT:
-	    np = allocb(sizeof(struct ppp_stats), BPRI_HI);
-	    if (np == 0) {
-		error = ENOSR;
-		break;
-	    }
-	    if (mp->b_cont != 0)
-		freemsg(mp->b_cont);
-	    mp->b_cont = np;
-	    psp = (struct ppp_stats *) np->b_wptr;
-	    np->b_wptr += sizeof(struct ppp_stats);
-	    bzero((caddr_t)psp, sizeof(struct ppp_stats));
-	    psp->p = state->stats;
-	    iop->ioc_count = sizeof(struct ppp_stats);
-	    error = 0;
-	    break;
-
-	case PPPIO_LASTMOD:
-	    /* we knew this anyway */
-	    error = 0;
-	    break;
-
-	default:
-	    error = -1;
-	    break;
-	}
-
-	if (error < 0)
-	    putnext(q, mp);
-	else if (error == 0) {
-	    mp->b_datap->db_type = M_IOCACK;
-	    qreply(q, mp);
-	} else {
-	    mp->b_datap->db_type = M_IOCNAK;
-	    iop->ioc_count = 0;
-	    iop->ioc_error = error;
-	    qreply(q, mp);
-	}
-	break;
-
-    case M_CTL:
-	switch (*mp->b_rptr) {
-	case PPPCTL_MTU:
-#if defined(USE_MUTEX)
-	    mutex_enter(&state->lock);
-#endif /* USE_MUTEX */
-	    state->mtu = ((unsigned short *)mp->b_rptr)[1];
-#if defined(USE_MUTEX)
-	    mutex_exit(&state->lock);
-#endif /* USE_MUTEX */
-	    freemsg(mp);
-	    break;
-	case PPPCTL_MRU:
-#if defined(USE_MUTEX)
-	    mutex_enter(&state->lock);
-#endif /* USE_MUTEX */
-	    state->mru = ((unsigned short *)mp->b_rptr)[1];
-#if defined(USE_MUTEX)
-	    mutex_exit(&state->lock);
-#endif /* USE_MUTEX */
-	    freemsg(mp);
-	    break;
-	case PPPCTL_UNIT:
-#if defined(USE_MUTEX)
-	    mutex_enter(&state->lock);
-#endif /* USE_MUTEX */
-	    state->unit = mp->b_rptr[1];
-#if defined(USE_MUTEX)
-	    mutex_exit(&state->lock);
-#endif /* USE_MUTEX */
-	    break;
-	default:
-	    putnext(q, mp);
-	}
-	break;
-
-    default:
-	putnext(q, mp);
-    }
-
-    return 0;
-}
-
-/*
- * Read side put routine
- */
-static int
-ahdlc_rput(q, mp)
-    queue_t *q;
-    mblk_t  *mp;
-{
-    ahdlc_state_t *state;
-
-    state = (ahdlc_state_t *) q->q_ptr;
-    if (state == 0) {
-	DPRINT("state == 0 in ahdlc_rput\n");
-	freemsg(mp);
-	return 0;
-    }
-
-    switch (mp->b_datap->db_type) {
-    case M_DATA:
-	ahdlc_decode(q, mp);
-	freemsg(mp);
-	break;
-
-    case M_HANGUP:
-#if defined(USE_MUTEX)
-	mutex_enter(&state->lock);
-#endif /* USE_MUTEX */
-	if (state->rx_buf != 0) {
-	    /* XXX would like to send this up for debugging */
-	    freemsg(state->rx_buf);
-	    state->rx_buf = 0;
-	}
-	state->flags = IFLUSH;
-#if defined(USE_MUTEX)
-	mutex_exit(&state->lock);
-#endif /* USE_MUTEX */
-	putnext(q, mp);
-	break;
-
-    default:
-	putnext(q, mp);
-    }
-    return 0;
-}
-
-/*
- * Extract bit c from map m, to determine if c needs to be escaped
- */
-#define IN_TX_MAP(c, m)	((m)[(c) >> 5] & (1 << ((c) & 0x1f)))
-
-static void
-ahdlc_encode(q, mp)
-    queue_t	*q;
-    mblk_t	*mp;
-{
-    ahdlc_state_t	*state;
-    u_int32_t		*xaccm, loc_xaccm[8];
-    ushort_t		fcs;
-    size_t		outmp_len;
-    mblk_t		*outmp, *tmp;
-    uchar_t		*dp, fcs_val;
-    int			is_lcp, code;
-#if defined(SOL2)
-    clock_t		lbolt;
-#endif /* SOL2 */
-
-    if (msgdsize(mp) < 4) {
-	return;
-    }
-
-    state = (ahdlc_state_t *)q->q_ptr;
-#if defined(USE_MUTEX)
-    mutex_enter(&state->lock);
-#endif /* USE_MUTEX */
-
-    /*
-     * Allocate an output buffer large enough to handle a case where all
-     * characters need to be escaped
-     */
-    outmp_len = (msgdsize(mp)	 << 1) +		/* input block x 2 */
-		(sizeof(fcs)	 << 2) +		/* HDLC FCS x 4 */
-		(sizeof(uchar_t) << 1);			/* HDLC flags x 2 */
-
-    outmp = allocb(outmp_len, BPRI_MED);
-    if (outmp == NULL) {
-	state->stats.ppp_oerrors++;
-#if defined(USE_MUTEX)
-	mutex_exit(&state->lock);
-#endif /* USE_MUTEX */
-	putctl1(RD(q)->q_next, M_CTL, PPPCTL_OERROR);
-	return;
-    }
-
-#if defined(SOL2)
-    /*
-     * Check if our last transmit happenned within flag_time, using
-     * the system's LBOLT value in clock ticks
-     */
-    if (drv_getparm(LBOLT, &lbolt) != -1) {
-	if (ABS((clock_t)lbolt - state->lbolt) > state->flag_time) {
-	    *outmp->b_wptr++ = PPP_FLAG;
-	} 
-	state->lbolt = lbolt;
-    } else {
-	*outmp->b_wptr++ = PPP_FLAG;
-    }
-#else
-    /*
-     * If the driver below still has a message to process, skip the
-     * HDLC flag, otherwise, put one in the beginning
-     */
-    if (qsize(q->q_next) == 0) {
-	*outmp->b_wptr++ = PPP_FLAG;
-    }
-#endif
-
-    /*
-     * All control characters must be escaped for LCP packets with code
-     * values between 1 (Conf-Req) and 7 (Code-Rej).
-     */
-    is_lcp = ((MSG_BYTE(mp, 0) == PPP_ALLSTATIONS) && 
-	      (MSG_BYTE(mp, 1) == PPP_UI) && 
-	      (MSG_BYTE(mp, 2) == (PPP_LCP >> 8)) &&
-	      (MSG_BYTE(mp, 3) == (PPP_LCP & 0xff)) &&
-	      LCP_USE_DFLT(mp));
-
-    xaccm = state->xaccm;
-    if (is_lcp) {
-	bcopy((caddr_t)state->xaccm, (caddr_t)loc_xaccm, sizeof(loc_xaccm));
-	loc_xaccm[0] = ~0;	/* force escape on 0x00 through 0x1f */
-	xaccm = loc_xaccm;
-    }
-
-    fcs = PPP_INITFCS;		/* Initial FCS is 0xffff */
-
-    /*
-     * Process this block and the rest (if any) attached to the this one
-     */
-    for (tmp = mp; tmp; tmp = tmp->b_cont) {
-	if (tmp->b_datap->db_type == M_DATA) {
-	    for (dp = tmp->b_rptr; dp < tmp->b_wptr; dp++) {
-		fcs = PPP_FCS(fcs, *dp);
-		if (IN_TX_MAP(*dp, xaccm)) {
-		    *outmp->b_wptr++ = PPP_ESCAPE;
-		    *outmp->b_wptr++ = *dp ^ PPP_TRANS;
-		} else {
-		    *outmp->b_wptr++ = *dp;
-		}
-	    }
-	} else {
-	    continue;	/* skip if db_type is something other than M_DATA */
-	}
-    }
-
-    /*
-     * Append the HDLC FCS, making sure that escaping is done on any
-     * necessary bytes
-     */
-    fcs_val = (fcs ^ 0xffff) & 0xff;
-    if (IN_TX_MAP(fcs_val, xaccm)) {
-	*outmp->b_wptr++ = PPP_ESCAPE;
-	*outmp->b_wptr++ = fcs_val ^ PPP_TRANS;
-    } else {
-	*outmp->b_wptr++ = fcs_val;
-    }
-
-    fcs_val = ((fcs ^ 0xffff) >> 8) & 0xff;
-    if (IN_TX_MAP(fcs_val, xaccm)) {
-	*outmp->b_wptr++ = PPP_ESCAPE;
-	*outmp->b_wptr++ = fcs_val ^ PPP_TRANS;
-    } else {
-	*outmp->b_wptr++ = fcs_val;
-    }
-
-    /*
-     * And finally, append the HDLC flag, and send it away
-     */
-    *outmp->b_wptr++ = PPP_FLAG;
-
-    state->stats.ppp_obytes += msgdsize(outmp);
-    state->stats.ppp_opackets++;
-
-#if defined(USE_MUTEX)
-    mutex_exit(&state->lock);
-#endif /* USE_MUTEX */
-
-    putnext(q, outmp);
-    return;
-}
-
-/*
- * Checks the 32-bit receive ACCM to see if the byte needs un-escaping
- */
-#define IN_RX_MAP(c, m)	((((unsigned int) (uchar_t) (c)) < 0x20) && \
-			(m) & (1 << (c)))
-
-
-/*
- * Process received characters.
- */
-static void
-ahdlc_decode(q, mp)
-    queue_t *q;
-    mblk_t  *mp;
-{
-    ahdlc_state_t   *state;
-    mblk_t	    *om;
-    uchar_t	    *dp;
-    ushort_t	    fcs;
-#if defined(SOL2)
-    mblk_t	    *zmp;
-#endif /* SOL2 */
-
-#if defined(SOL2)
-    /*
-     * In case the driver (or something below) doesn't send
-     * data upstream in one message block, concatenate everything
-     */
-    if (!((mp->b_wptr - mp->b_rptr == msgdsize(mp)) && 
-         ((intpointer_t)mp->b_rptr % sizeof(intpointer_t) == 0))) {
-
-	zmp = msgpullup(mp, -1);
-	freemsg(mp);
-	mp = zmp;
-	if (mp == 0)
-	    return; 
-    }
-#endif /* SOL2 */
-
-    state = (ahdlc_state_t *) q->q_ptr;
-
-#if defined(USE_MUTEX)
-    mutex_enter(&state->lock);
-#endif /* USE_MUTEX */
-
-    state->stats.ppp_ibytes += msgdsize(mp);
-
-    for (dp = mp->b_rptr; dp < mp->b_wptr; dp++) {
-
-	/*
-	 * This should detect the lack of 8-bit communication channel
-	 * which is necessary for PPP to work. In addition, it also
-	 * checks on the parity.
-	 */
-	if (*dp & 0x80)
-	    state->flags |= RCV_B7_1;
-	else
-	    state->flags |= RCV_B7_0;
-
-	if (paritytab[*dp >> 5] & (1 << (*dp & 0x1f)))
-	    state->flags |= RCV_ODDP;
-	else
-	    state->flags |= RCV_EVNP;
-
-	/*
-	 * So we have a HDLC flag ...
-	 */
-	if (*dp == PPP_FLAG) {
-
-	    /*
-	     * If we think that it marks the beginning of the frame,
-	     * then continue to process the next octects
-	     */
-	    if ((state->flags & IFLUSH) ||
-		(state->rx_buf == 0) ||
-		(msgdsize(state->rx_buf) == 0)) {
-
-		state->flags &= ~IFLUSH;
-		continue;
-	    }
-
-	    /*
-	     * We get here because the above condition isn't true,
-	     * in which case the HDLC flag was there to mark the end
-	     * of the frame (or so we think)
-	     */
-	    om = state->rx_buf;
-
-	    if (state->infcs == PPP_GOODFCS) {
-		state->stats.ppp_ipackets++;
-		adjmsg(om, -PPP_FCSLEN);
-		putnext(q, om);
-	    } else {
-		DPRINT2("ppp%d: bad fcs (len=%d)\n",
-                    state->unit, msgdsize(state->rx_buf));
-		freemsg(state->rx_buf);
-		state->flags &= ~(IFLUSH | ESCAPED);
-		state->stats.ppp_ierrors++;
-		putctl1(q->q_next, M_CTL, PPPCTL_IERROR);
-	    }
-
-	    state->rx_buf = 0;
-	    continue;
-	}
-
-	if (state->flags & IFLUSH) {
-	    continue;
-	}
-
-	/*
-	 * Allocate a receive buffer, large enough to store a frame (after
-	 * un-escaping) of at least 1500 octets. If MRU is negotiated to
-	 * be more than the default, then allocate that much. In addition,
-	 * we add an extra 32-bytes for a fudge factor
-	 */ 
-	if (state->rx_buf == 0) {
-	    state->rx_buf_size  = (state->mru < PPP_MRU ? PPP_MRU : state->mru);
-	    state->rx_buf_size += (sizeof(u_int32_t) << 3);
-	    state->rx_buf = allocb(state->rx_buf_size, BPRI_MED);
-
-	    /*
-	     * If allocation fails, try again on the next frame
-	     */
-	    if (state->rx_buf == 0) {
-		state->flags |= IFLUSH;
-		continue;
-	    }
-	    state->flags &= ~(IFLUSH | ESCAPED);
-	    state->infcs  = PPP_INITFCS;
-	}
-
-	if (*dp == PPP_ESCAPE) {
-	    state->flags |= ESCAPED;
-	    continue;
-	}
-
-	/*
-	 * Make sure we un-escape the necessary characters, as well as the
-	 * ones in our receive async control character map
-	 */
-	if (state->flags & ESCAPED) {
-	    *dp ^= PPP_TRANS;
-	    state->flags &= ~ESCAPED;
-	} else if (IN_RX_MAP(*dp, state->raccm)) 
-	    continue;
-
-	/*
-	 * Unless the peer lied to us about the negotiated MRU, we should
-	 * never get a frame which is too long. If it happens, toss it away
-	 * and grab the next incoming one
-	 */
-	if (msgdsize(state->rx_buf) < state->rx_buf_size) {
-	    state->infcs = PPP_FCS(state->infcs, *dp);
-	    *state->rx_buf->b_wptr++ = *dp;
-	} else {
-	    DPRINT2("ppp%d: frame too long (%d)\n",
-		state->unit, msgdsize(state->rx_buf));
-	    freemsg(state->rx_buf);
-	    state->rx_buf     = 0;
-	    state->flags     |= IFLUSH;
-	}
-    }
-
-#if defined(USE_MUTEX)
-    mutex_exit(&state->lock);
-#endif /* USE_MUTEX */
-}
-
-static int
-msg_byte(mp, i)
-    mblk_t *mp;
-    unsigned int i;
-{
-    while (mp != 0 && i >= mp->b_wptr - mp->b_rptr)
-	mp = mp->b_cont;
-    if (mp == 0)
-	return -1;
-    return mp->b_rptr[i];
-}
diff --git a/mdk-stage1/ppp/solaris/ppp_ahdlc_mod.c b/mdk-stage1/ppp/solaris/ppp_ahdlc_mod.c
deleted file mode 100644
index f81be8abb..000000000
--- a/mdk-stage1/ppp/solaris/ppp_ahdlc_mod.c
+++ /dev/null
@@ -1,49 +0,0 @@
-#include <sys/types.h>
-#include <sys/param.h>
-#include <sys/conf.h>
-#include <sys/modctl.h>
-#include <sys/sunddi.h>
-
-extern struct streamtab ppp_ahdlcinfo;
-
-static struct fmodsw fsw = {
-    "ppp_ahdl",
-    &ppp_ahdlcinfo,
-    D_NEW | D_MP | D_MTQPAIR
-};
-
-extern struct mod_ops mod_strmodops;
-
-static struct modlstrmod modlstrmod = {
-    &mod_strmodops,
-    "PPP async HDLC module",
-    &fsw
-};
-
-static struct modlinkage modlinkage = {
-    MODREV_1,
-    (void *) &modlstrmod,
-    NULL
-};
-
-/*
- * Entry points for modloading.
- */
-int
-_init(void)
-{
-    return mod_install(&modlinkage);
-}
-
-int
-_fini(void)
-{
-    return mod_remove(&modlinkage);
-}
-
-int
-_info(mip)
-    struct modinfo *mip;
-{
-    return mod_info(&modlinkage, mip);
-}
diff --git a/mdk-stage1/ppp/solaris/ppp_comp.c b/mdk-stage1/ppp/solaris/ppp_comp.c
deleted file mode 100644
index f6eef5ab1..000000000
--- a/mdk-stage1/ppp/solaris/ppp_comp.c
+++ /dev/null
@@ -1,1126 +0,0 @@
-/*
- * ppp_comp.c - STREAMS module for kernel-level compression and CCP support.
- *
- * Copyright (c) 1994 The Australian National University.
- * All rights reserved.
- *
- * Permission to use, copy, modify, and distribute this software and its
- * documentation is hereby granted, provided that the above copyright
- * notice appears in all copies.  This software is provided without any
- * warranty, express or implied. The Australian National University
- * makes no representations about the suitability of this software for
- * any purpose.
- *
- * IN NO EVENT SHALL THE AUSTRALIAN NATIONAL UNIVERSITY BE LIABLE TO ANY
- * PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
- * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF
- * THE AUSTRALIAN NATIONAL UNIVERSITY HAS BEEN ADVISED OF THE POSSIBILITY
- * OF SUCH DAMAGE.
- *
- * THE AUSTRALIAN NATIONAL UNIVERSITY SPECIFICALLY DISCLAIMS ANY WARRANTIES,
- * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
- * AND FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
- * ON AN "AS IS" BASIS, AND THE AUSTRALIAN NATIONAL UNIVERSITY HAS NO
- * OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS,
- * OR MODIFICATIONS.
- *
- * $Id$
- */
-
-/*
- * This file is used under SVR4, Solaris 2, SunOS 4, and Digital UNIX.
- */
-
-#include <sys/types.h>
-#include <sys/param.h>
-#include <sys/errno.h>
-#include <sys/stream.h>
-
-#ifdef SVR4
-#include <sys/conf.h>
-#include <sys/cmn_err.h>
-#include <sys/ddi.h>
-#else
-#include <sys/user.h>
-#ifdef __osf__
-#include <sys/cmn_err.h>
-#endif
-#endif /* SVR4 */
-
-#include <net/ppp_defs.h>
-#include <net/pppio.h>
-#include "ppp_mod.h"
-
-#ifdef __osf__
-#include <sys/mbuf.h>
-#include <sys/protosw.h>
-#endif
-
-#include <netinet/in.h>
-#include <netinet/in_systm.h>
-#include <netinet/ip.h>
-#include <net/vjcompress.h>
-
-#define PACKETPTR	mblk_t *
-#include <net/ppp-comp.h>
-
-MOD_OPEN_DECL(ppp_comp_open);
-MOD_CLOSE_DECL(ppp_comp_close);
-static int ppp_comp_rput __P((queue_t *, mblk_t *));
-static int ppp_comp_rsrv __P((queue_t *));
-static int ppp_comp_wput __P((queue_t *, mblk_t *));
-static int ppp_comp_wsrv __P((queue_t *));
-static void ppp_comp_ccp __P((queue_t *, mblk_t *, int));
-static int msg_byte __P((mblk_t *, unsigned int));
-
-/* Extract byte i of message mp. */
-#define MSG_BYTE(mp, i)	((i) < (mp)->b_wptr - (mp)->b_rptr? (mp)->b_rptr[i]: \
-			 msg_byte((mp), (i)))
-
-/* Is this LCP packet one we have to transmit using LCP defaults? */
-#define LCP_USE_DFLT(mp)	(1 <= (code = MSG_BYTE((mp), 4)) && code <= 7)
-
-#define PPP_COMP_ID 0xbadf
-static struct module_info minfo = {
-#ifdef PRIOQ
-    PPP_COMP_ID, "ppp_comp", 0, INFPSZ, 16512, 16384,
-#else
-    PPP_COMP_ID, "ppp_comp", 0, INFPSZ, 16384, 4096,
-#endif
-};
-
-static struct qinit r_init = {
-    ppp_comp_rput, ppp_comp_rsrv, ppp_comp_open, ppp_comp_close,
-    NULL, &minfo, NULL
-};
-
-static struct qinit w_init = {
-    ppp_comp_wput, ppp_comp_wsrv, NULL, NULL, NULL, &minfo, NULL
-};
-
-#if defined(SVR4) && !defined(SOL2)
-int pcmpdevflag = 0;
-#define ppp_compinfo pcmpinfo
-#endif
-struct streamtab ppp_compinfo = {
-    &r_init, &w_init, NULL, NULL
-};
-
-int ppp_comp_count;		/* number of module instances in use */
-
-#ifdef __osf__
-
-static void ppp_comp_alloc __P((comp_state_t *));
-typedef struct memreq {
-    unsigned char comp_opts[20];
-    int cmd;
-    int thread_status;
-    char *returned_mem;
-} memreq_t;
-
-#endif
-
-typedef struct comp_state {
-    int		flags;
-    int		mru;
-    int		mtu;
-    int		unit;
-    struct compressor *xcomp;
-    void	*xstate;
-    struct compressor *rcomp;
-    void	*rstate;
-    struct vjcompress vj_comp;
-    int		vj_last_ierrors;
-    struct pppstat stats;
-#ifdef __osf__
-    memreq_t	memreq;
-    thread_t	thread;
-#endif
-} comp_state_t;
-
-
-#ifdef __osf__
-extern task_t first_task;
-#endif
-
-/* Bits in flags are as defined in pppio.h. */
-#define CCP_ERR		(CCP_ERROR | CCP_FATALERROR)
-#define LAST_MOD	0x1000000	/* no ppp modules below us */
-#define DBGLOG		0x2000000	/* log debugging stuff */
-
-#define MAX_IPHDR	128	/* max TCP/IP header size */
-#define MAX_VJHDR	20	/* max VJ compressed header size (?) */
-
-#undef MIN		/* just in case */
-#define MIN(a, b)	((a) < (b)? (a): (b))
-
-/*
- * List of compressors we know about.
- */
-
-#if DO_BSD_COMPRESS
-extern struct compressor ppp_bsd_compress;
-#endif
-#if DO_DEFLATE
-extern struct compressor ppp_deflate, ppp_deflate_draft;
-#endif
-
-struct compressor *ppp_compressors[] = {
-#if DO_BSD_COMPRESS
-    &ppp_bsd_compress,
-#endif
-#if DO_DEFLATE
-    &ppp_deflate,
-    &ppp_deflate_draft,
-#endif
-    NULL
-};
-
-/*
- * STREAMS module entry points.
- */
-MOD_OPEN(ppp_comp_open)
-{
-    comp_state_t *cp;
-#ifdef __osf__
-    thread_t thread;
-#endif
-
-    if (q->q_ptr == NULL) {
-	cp = (comp_state_t *) ALLOC_SLEEP(sizeof(comp_state_t));
-	if (cp == NULL)
-	    OPEN_ERROR(ENOSR);
-	bzero((caddr_t)cp, sizeof(comp_state_t));
-	WR(q)->q_ptr = q->q_ptr = (caddr_t) cp;
-	cp->mru = PPP_MRU;
-	cp->mtu = PPP_MTU;
-	cp->xstate = NULL;
-	cp->rstate = NULL;
-	vj_compress_init(&cp->vj_comp, -1);
-#ifdef __osf__
-	if (!(thread = kernel_thread_w_arg(first_task, ppp_comp_alloc, (void *)cp)))
-		OPEN_ERROR(ENOSR);
-	cp->thread = thread;
-#endif
-	++ppp_comp_count;
-	qprocson(q);
-    }
-    return 0;
-}
-
-MOD_CLOSE(ppp_comp_close)
-{
-    comp_state_t *cp;
-
-    qprocsoff(q);
-    cp = (comp_state_t *) q->q_ptr;
-    if (cp != NULL) {
-	if (cp->xstate != NULL)
-	    (*cp->xcomp->comp_free)(cp->xstate);
-	if (cp->rstate != NULL)
-	    (*cp->rcomp->decomp_free)(cp->rstate);
-#ifdef __osf__
-	if (!cp->thread)
-	    printf("ppp_comp_close: NULL thread!\n");
-	else
-	    thread_terminate(cp->thread);
-#endif
-	FREE(cp, sizeof(comp_state_t));
-	q->q_ptr = NULL;
-	OTHERQ(q)->q_ptr = NULL;
-	--ppp_comp_count;
-    }
-    return 0;
-}
-
-#ifdef __osf__
-
-/* thread for calling back to a compressor's memory allocator
- * Needed for Digital UNIX since it's VM can't handle requests
- * for large amounts of memory without blocking.  The thread
- * provides a context in which we can call a memory allocator
- * that may block.
- */
-static void
-ppp_comp_alloc(comp_state_t *cp)
-{
-    int len, cmd;
-    unsigned char *compressor_options;
-    thread_t thread;
-    void *(*comp_allocator)();
-
-
-#if defined(MAJOR_VERSION) && (MAJOR_VERSION <= 2)
-
-    /* In 2.x and earlier the argument gets passed
-     * in the thread structure itself.  Yuck.
-     */
-    thread = current_thread();
-    cp = thread->reply_port;
-    thread->reply_port = PORT_NULL;
-
-#endif
-
-    for (;;) {
-	assert_wait((vm_offset_t)&cp->memreq.thread_status, TRUE);
-	thread_block();
-
-	if (thread_should_halt(current_thread()))
-	    thread_halt_self();
-	cmd = cp->memreq.cmd;
-	compressor_options = &cp->memreq.comp_opts[0];
-	len = compressor_options[1];
-	if (cmd == PPPIO_XCOMP) {
-	    cp->memreq.returned_mem = cp->xcomp->comp_alloc(compressor_options, len);
-	    if (!cp->memreq.returned_mem) {
-		cp->memreq.thread_status = ENOSR;
-	    } else {
-		cp->memreq.thread_status = 0;
-	    }
-	} else {
-	    cp->memreq.returned_mem = cp->rcomp->decomp_alloc(compressor_options, len);
-	    if (!cp->memreq.returned_mem) {
-	        cp->memreq.thread_status = ENOSR;
-	    } else {
-		cp->memreq.thread_status = 0;
-	    }
-	}
-    }
-}
-
-#endif /* __osf__ */
-
-/* here's the deal with memory allocation under Digital UNIX.
- * Some other may also benefit from this...
- * We can't ask for huge chunks of memory in a context where
- * the caller can't be put to sleep (like, here.)  The alloc
- * is likely to fail.  Instead we do this: the first time we
- * get called, kick off a thread to do the allocation.  Return
- * immediately to the caller with EAGAIN, as an indication that
- * they should send down the ioctl again.  By the time the
- * second call comes in it's likely that the memory allocation
- * thread will have returned with the requested memory.  We will
- * continue to return EAGAIN however until the thread has completed.
- * When it has, we return zero (and the memory) if the allocator
- * was successful and ENOSR otherwise.
- *
- * Callers of the RCOMP and XCOMP ioctls are encouraged (but not
- * required) to loop for some number of iterations with a small
- * delay in the loop body (for instance a 1/10-th second "sleep"
- * via select.)
- */
-static int
-ppp_comp_wput(q, mp)
-    queue_t *q;
-    mblk_t *mp;
-{
-    struct iocblk *iop;
-    comp_state_t *cp;
-    int error, len, n;
-    int flags, mask;
-    mblk_t *np;
-    struct compressor **comp;
-    struct ppp_stats *psp;
-    struct ppp_comp_stats *csp;
-    unsigned char *opt_data;
-    int nxslots, nrslots;
-
-    cp = (comp_state_t *) q->q_ptr;
-    if (cp == 0) {
-	DPRINT("cp == 0 in ppp_comp_wput\n");
-	freemsg(mp);
-	return 0;
-    }
-
-    switch (mp->b_datap->db_type) {
-
-    case M_DATA:
-	putq(q, mp);
-	break;
-
-    case M_IOCTL:
-	iop = (struct iocblk *) mp->b_rptr;
-	error = EINVAL;
-	switch (iop->ioc_cmd) {
-
-	case PPPIO_CFLAGS:
-	    /* set/get CCP state */
-	    if (iop->ioc_count != 2 * sizeof(int))
-		break;
-	    if (mp->b_cont == 0) {
-		DPRINT1("ppp_comp_wput/%d: PPPIO_CFLAGS b_cont = 0!\n", cp->unit);
-		break;
-	    }
-	    flags = ((int *) mp->b_cont->b_rptr)[0];
-	    mask = ((int *) mp->b_cont->b_rptr)[1];
-	    cp->flags = (cp->flags & ~mask) | (flags & mask);
-	    if ((mask & CCP_ISOPEN) && (flags & CCP_ISOPEN) == 0) {
-		if (cp->xstate != NULL) {
-		    (*cp->xcomp->comp_free)(cp->xstate);
-		    cp->xstate = NULL;
-		}
-		if (cp->rstate != NULL) {
-		    (*cp->rcomp->decomp_free)(cp->rstate);
-		    cp->rstate = NULL;
-		}
-		cp->flags &= ~CCP_ISUP;
-	    }
-	    error = 0;
-	    iop->ioc_count = sizeof(int);
-	    ((int *) mp->b_cont->b_rptr)[0] = cp->flags;
-	    mp->b_cont->b_wptr = mp->b_cont->b_rptr + sizeof(int);
-	    break;
-
-	case PPPIO_VJINIT:
-	    /*
-	     * Initialize VJ compressor/decompressor
-	     */
-	    if (iop->ioc_count != 2)
-		break;
-	    if (mp->b_cont == 0) {
-		DPRINT1("ppp_comp_wput/%d: PPPIO_VJINIT b_cont = 0!\n", cp->unit);
-		break;
-	    }
-	    nxslots = mp->b_cont->b_rptr[0] + 1;
-	    nrslots = mp->b_cont->b_rptr[1] + 1;
-	    if (nxslots > MAX_STATES || nrslots > MAX_STATES)
-		break;
-	    vj_compress_init(&cp->vj_comp, nxslots);
-	    cp->vj_last_ierrors = cp->stats.ppp_ierrors;
-	    error = 0;
-	    iop->ioc_count = 0;
-	    break;
-
-	case PPPIO_XCOMP:
-	case PPPIO_RCOMP:
-	    if (iop->ioc_count <= 0)
-		break;
-	    if (mp->b_cont == 0) {
-		DPRINT1("ppp_comp_wput/%d: PPPIO_[XR]COMP b_cont = 0!\n", cp->unit);
-		break;
-	    }
-	    opt_data = mp->b_cont->b_rptr;
-	    len = mp->b_cont->b_wptr - opt_data;
-	    if (len > iop->ioc_count)
-		len = iop->ioc_count;
-	    if (opt_data[1] < 2 || opt_data[1] > len)
-		break;
-	    for (comp = ppp_compressors; *comp != NULL; ++comp)
-		if ((*comp)->compress_proto == opt_data[0]) {
-		    /* here's the handler! */
-		    error = 0;
-#ifndef __osf__
-		    if (iop->ioc_cmd == PPPIO_XCOMP) {
-			/* A previous call may have fetched memory for a compressor
-			 * that's now being retired or reset.  Free it using it's
-			 * mechanism for freeing stuff.
-			 */
-			if (cp->xstate != NULL) {
-			    (*cp->xcomp->comp_free)(cp->xstate);
-			    cp->xstate = NULL;
-			}
-			cp->xcomp = *comp;
-			cp->xstate = (*comp)->comp_alloc(opt_data, len);
-			if (cp->xstate == NULL)
-			    error = ENOSR;
-		    } else {
-			if (cp->rstate != NULL) {
-			    (*cp->rcomp->decomp_free)(cp->rstate);
-			    cp->rstate = NULL;
-			}
-			cp->rcomp = *comp;
-			cp->rstate = (*comp)->decomp_alloc(opt_data, len);
-			if (cp->rstate == NULL)
-			    error = ENOSR;
-		    }
-#else
-		    if ((error = cp->memreq.thread_status) != EAGAIN)
-		    if (iop->ioc_cmd == PPPIO_XCOMP) {
-			if (cp->xstate) {
-			    (*cp->xcomp->comp_free)(cp->xstate);
-			    cp->xstate = 0;
-			}
-			/* sanity check for compressor options
-			 */
-			if (sizeof (cp->memreq.comp_opts) < len) {
-			    printf("can't handle options for compressor %d (%d)\n", opt_data[0],
-				opt_data[1]);
-			    cp->memreq.thread_status = ENOSR;
-			    cp->memreq.returned_mem = 0;
-			}
-			/* fill in request for the thread and kick it off
-			 */
-			if (cp->memreq.thread_status == 0 && !cp->memreq.returned_mem) {
-			    bcopy(opt_data, cp->memreq.comp_opts, len);
-			    cp->memreq.cmd = PPPIO_XCOMP;
-			    cp->xcomp = *comp;
-			    error = cp->memreq.thread_status = EAGAIN;
-			    thread_wakeup((vm_offset_t)&cp->memreq.thread_status);
-			} else {
-			    cp->xstate = cp->memreq.returned_mem;
-			    cp->memreq.returned_mem = 0;
-			    cp->memreq.thread_status = 0;
-			}
-		    } else {
-			if (cp->rstate) {
-			    (*cp->rcomp->decomp_free)(cp->rstate);
-			    cp->rstate = NULL;
-			}
-			if (sizeof (cp->memreq.comp_opts) < len) {
-			    printf("can't handle options for compressor %d (%d)\n", opt_data[0],
-				opt_data[1]);
-			    cp->memreq.thread_status = ENOSR;
-			    cp->memreq.returned_mem = 0;
-			}
-			if (cp->memreq.thread_status == 0 && !cp->memreq.returned_mem) {
-			    bcopy(opt_data, cp->memreq.comp_opts, len);
-			    cp->memreq.cmd = PPPIO_RCOMP;
-			    cp->rcomp = *comp;
-			    error = cp->memreq.thread_status = EAGAIN;
-			    thread_wakeup((vm_offset_t)&cp->memreq.thread_status);
-			} else {
-			    cp->rstate = cp->memreq.returned_mem;
-			    cp->memreq.returned_mem = 0;
-			    cp->memreq.thread_status = 0;
-			}
-		    }
-#endif
-		    break;
-		}
-	    iop->ioc_count = 0;
-	    break;
-
-	case PPPIO_GETSTAT:
-	    if ((cp->flags & LAST_MOD) == 0) {
-		error = -1;	/* let the ppp_ahdl module handle it */
-		break;
-	    }
-	    np = allocb(sizeof(struct ppp_stats), BPRI_HI);
-	    if (np == 0) {
-		error = ENOSR;
-		break;
-	    }
-	    if (mp->b_cont != 0)
-		freemsg(mp->b_cont);
-	    mp->b_cont = np;
-	    psp = (struct ppp_stats *) np->b_wptr;
-	    np->b_wptr += sizeof(struct ppp_stats);
-	    iop->ioc_count = sizeof(struct ppp_stats);
-	    psp->p = cp->stats;
-	    psp->vj = cp->vj_comp.stats;
-	    error = 0;
-	    break;
-
-	case PPPIO_GETCSTAT:
-	    np = allocb(sizeof(struct ppp_comp_stats), BPRI_HI);
-	    if (np == 0) {
-		error = ENOSR;
-		break;
-	    }
-	    if (mp->b_cont != 0)
-		freemsg(mp->b_cont);
-	    mp->b_cont = np;
-	    csp = (struct ppp_comp_stats *) np->b_wptr;
-	    np->b_wptr += sizeof(struct ppp_comp_stats);
-	    iop->ioc_count = sizeof(struct ppp_comp_stats);
-	    bzero((caddr_t)csp, sizeof(struct ppp_comp_stats));
-	    if (cp->xstate != 0)
-		(*cp->xcomp->comp_stat)(cp->xstate, &csp->c);
-	    if (cp->rstate != 0)
-		(*cp->rcomp->decomp_stat)(cp->rstate, &csp->d);
-	    error = 0;
-	    break;
-
-	case PPPIO_DEBUG:
-	    if (iop->ioc_count != sizeof(int))
-		break;
-	    if (mp->b_cont == 0) {
-		DPRINT1("ppp_comp_wput/%d: PPPIO_DEBUG b_cont = 0!\n", cp->unit);
-		break;
-	    }
-	    n = *(int *)mp->b_cont->b_rptr;
-	    if (n == PPPDBG_LOG + PPPDBG_COMP) {
-		DPRINT1("ppp_comp%d: debug log enabled\n", cp->unit);
-		cp->flags |= DBGLOG;
-		error = 0;
-		iop->ioc_count = 0;
-	    } else {
-		error = -1;
-	    }
-	    break;
-
-	case PPPIO_LASTMOD:
-	    cp->flags |= LAST_MOD;
-	    error = 0;
-	    break;
-
-	default:
-	    error = -1;
-	    break;
-	}
-
-	if (error < 0)
-	    putnext(q, mp);
-	else if (error == 0) {
-	    mp->b_datap->db_type = M_IOCACK;
-	    qreply(q, mp);
-	} else {
-	    mp->b_datap->db_type = M_IOCNAK;
-	    iop->ioc_error = error;
-	    iop->ioc_count = 0;
-	    qreply(q, mp);
-	}
-	break;
-
-    case M_CTL:
-	switch (*mp->b_rptr) {
-	case PPPCTL_MTU:
-	    cp->mtu = ((unsigned short *)mp->b_rptr)[1];
-	    break;
-	case PPPCTL_MRU:
-	    cp->mru = ((unsigned short *)mp->b_rptr)[1];
-	    break;
-	case PPPCTL_UNIT:
-	    cp->unit = mp->b_rptr[1];
-	    break;
-	}
-	putnext(q, mp);
-	break;
-
-    default:
-	putnext(q, mp);
-    }
-
-    return 0;
-}
-
-static int
-ppp_comp_wsrv(q)
-    queue_t *q;
-{
-    mblk_t *mp, *cmp = NULL;
-    comp_state_t *cp;
-    int len, proto, type, hlen, code;
-    struct ip *ip;
-    unsigned char *vjhdr, *dp;
-
-    cp = (comp_state_t *) q->q_ptr;
-    if (cp == 0) {
-	DPRINT("cp == 0 in ppp_comp_wsrv\n");
-	return 0;
-    }
-
-    while ((mp = getq(q)) != 0) {
-	/* assert(mp->b_datap->db_type == M_DATA) */
-#ifdef PRIOQ
-        if (!bcanputnext(q,mp->b_band))
-#else
-        if (!canputnext(q))
-#endif PRIOQ
-	{
-	    putbq(q, mp);
-	    break;
-	}
-
-	/*
-	 * First check the packet length and work out what the protocol is.
-	 */
-	len = msgdsize(mp);
-	if (len < PPP_HDRLEN) {
-	    DPRINT1("ppp_comp_wsrv: bogus short packet (%d)\n", len);
-	    freemsg(mp);
-	    cp->stats.ppp_oerrors++;
-	    putctl1(RD(q)->q_next, M_CTL, PPPCTL_OERROR);
-	    continue;
-	}
-	proto = (MSG_BYTE(mp, 2) << 8) + MSG_BYTE(mp, 3);
-
-	/*
-	 * Make sure we've got enough data in the first mblk
-	 * and that we are its only user.
-	 */
-	if (proto == PPP_CCP)
-	    hlen = len;
-	else if (proto == PPP_IP)
-	    hlen = PPP_HDRLEN + MAX_IPHDR;
-	else
-	    hlen = PPP_HDRLEN;
-	if (hlen > len)
-	    hlen = len;
-	if (mp->b_wptr < mp->b_rptr + hlen || mp->b_datap->db_ref > 1) {
-	    PULLUP(mp, hlen);
-	    if (mp == 0) {
-		DPRINT1("ppp_comp_wsrv: pullup failed (%d)\n", hlen);
-		cp->stats.ppp_oerrors++;
-		putctl1(RD(q)->q_next, M_CTL, PPPCTL_OERROR);
-		continue;
-	    }
-	}
-
-	/*
-	 * Do VJ compression if requested.
-	 */
-	if (proto == PPP_IP && (cp->flags & COMP_VJC)) {
-	    ip = (struct ip *) (mp->b_rptr + PPP_HDRLEN);
-	    if (ip->ip_p == IPPROTO_TCP) {
-		type = vj_compress_tcp(ip, len - PPP_HDRLEN, &cp->vj_comp,
-				       (cp->flags & COMP_VJCCID), &vjhdr);
-		switch (type) {
-		case TYPE_UNCOMPRESSED_TCP:
-		    mp->b_rptr[3] = proto = PPP_VJC_UNCOMP;
-		    break;
-		case TYPE_COMPRESSED_TCP:
-		    dp = vjhdr - PPP_HDRLEN;
-		    dp[1] = mp->b_rptr[1]; /* copy control field */
-		    dp[0] = mp->b_rptr[0]; /* copy address field */
-		    dp[2] = 0;		   /* set protocol field */
-		    dp[3] = proto = PPP_VJC_COMP;
-		    mp->b_rptr = dp;
-		    break;
-		}
-	    }
-	}
-
-	/*
-	 * Do packet compression if enabled.
-	 */
-	if (proto == PPP_CCP)
-	    ppp_comp_ccp(q, mp, 0);
-	else if (proto != PPP_LCP && (cp->flags & CCP_COMP_RUN)
-		 && cp->xstate != NULL) {
-	    len = msgdsize(mp);
-	    (*cp->xcomp->compress)(cp->xstate, &cmp, mp, len,
-			(cp->flags & CCP_ISUP? cp->mtu + PPP_HDRLEN: 0));
-	    if (cmp != NULL) {
-#ifdef PRIOQ
-		cmp->b_band=mp->b_band;
-#endif PRIOQ
-		freemsg(mp);
-		mp = cmp;
-	    }
-	}
-
-	/*
-	 * Do address/control and protocol compression if enabled.
-	 */
-	if ((cp->flags & COMP_AC)
-	    && !(proto == PPP_LCP && LCP_USE_DFLT(mp))) {
-	    mp->b_rptr += 2;	/* drop the address & ctrl fields */
-	    if (proto < 0x100 && (cp->flags & COMP_PROT))
-		++mp->b_rptr;	/* drop the high protocol byte */
-	} else if (proto < 0x100 && (cp->flags & COMP_PROT)) {
-	    /* shuffle up the address & ctrl fields */
-	    mp->b_rptr[2] = mp->b_rptr[1];
-	    mp->b_rptr[1] = mp->b_rptr[0];
-	    ++mp->b_rptr;
-	}
-
-	cp->stats.ppp_opackets++;
-	cp->stats.ppp_obytes += msgdsize(mp);
-	putnext(q, mp);
-    }
-
-    return 0;
-}
-
-static int
-ppp_comp_rput(q, mp)
-    queue_t *q;
-    mblk_t *mp;
-{
-    comp_state_t *cp;
-    struct iocblk *iop;
-    struct ppp_stats *psp;
-
-    cp = (comp_state_t *) q->q_ptr;
-    if (cp == 0) {
-	DPRINT("cp == 0 in ppp_comp_rput\n");
-	freemsg(mp);
-	return 0;
-    }
-
-    switch (mp->b_datap->db_type) {
-
-    case M_DATA:
-	putq(q, mp);
-	break;
-
-    case M_IOCACK:
-	iop = (struct iocblk *) mp->b_rptr;
-	switch (iop->ioc_cmd) {
-	case PPPIO_GETSTAT:
-	    /*
-	     * Catch this on the way back from the ppp_ahdl module
-	     * so we can fill in the VJ stats.
-	     */
-	    if (mp->b_cont == 0 || iop->ioc_count != sizeof(struct ppp_stats))
-		break;
-	    psp = (struct ppp_stats *) mp->b_cont->b_rptr;
-	    psp->vj = cp->vj_comp.stats;
-	    break;
-	}
-	putnext(q, mp);
-	break;
-
-    case M_CTL:
-	switch (mp->b_rptr[0]) {
-	case PPPCTL_IERROR:
-	    ++cp->stats.ppp_ierrors;
-	    break;
-	case PPPCTL_OERROR:
-	    ++cp->stats.ppp_oerrors;
-	    break;
-	}
-	putnext(q, mp);
-	break;
-
-    default:
-	putnext(q, mp);
-    }
-
-    return 0;
-}
-
-static int
-ppp_comp_rsrv(q)
-    queue_t *q;
-{
-    int proto, rv, i;
-    mblk_t *mp, *dmp = NULL, *np;
-    uchar_t *dp, *iphdr;
-    comp_state_t *cp;
-    int len, hlen, vjlen;
-    u_int iphlen;
-
-    cp = (comp_state_t *) q->q_ptr;
-    if (cp == 0) {
-	DPRINT("cp == 0 in ppp_comp_rsrv\n");
-	return 0;
-    }
-
-    while ((mp = getq(q)) != 0) {
-	/* assert(mp->b_datap->db_type == M_DATA) */
-	if (!canputnext(q)) {
-	    putbq(q, mp);
-	    break;
-	}
-
-	len = msgdsize(mp);
-	cp->stats.ppp_ibytes += len;
-	cp->stats.ppp_ipackets++;
-
-	/*
-	 * First work out the protocol and where the PPP header ends.
-	 */
-	i = 0;
-	proto = MSG_BYTE(mp, 0);
-	if (proto == PPP_ALLSTATIONS) {
-	    i = 2;
-	    proto = MSG_BYTE(mp, 2);
-	}
-	if ((proto & 1) == 0) {
-	    ++i;
-	    proto = (proto << 8) + MSG_BYTE(mp, i);
-	}
-	hlen = i + 1;
-
-	/*
-	 * Now reconstruct a complete, contiguous PPP header at the
-	 * start of the packet.
-	 */
-	if (hlen < ((cp->flags & DECOMP_AC)? 0: 2)
-	           + ((cp->flags & DECOMP_PROT)? 1: 2)) {
-	    /* count these? */
-	    goto bad;
-	}
-	if (mp->b_rptr + hlen > mp->b_wptr) {
-	    adjmsg(mp, hlen);	/* XXX check this call */
-	    hlen = 0;
-	}
-	if (hlen != PPP_HDRLEN) {
-	    /*
-	     * We need to put some bytes on the front of the packet
-	     * to make a full-length PPP header.
-	     * If we can put them in *mp, we do, otherwise we
-	     * tack another mblk on the front.
-	     * XXX we really shouldn't need to carry around
-	     * the address and control at this stage.
-	     */
-	    dp = mp->b_rptr + hlen - PPP_HDRLEN;
-	    if (dp < mp->b_datap->db_base || mp->b_datap->db_ref > 1) {
-		np = allocb(PPP_HDRLEN, BPRI_MED);
-		if (np == 0)
-		    goto bad;
-		np->b_cont = mp;
-		mp->b_rptr += hlen;
-		mp = np;
-		dp = mp->b_wptr;
-		mp->b_wptr += PPP_HDRLEN;
-	    } else
-		mp->b_rptr = dp;
-
-	    dp[0] = PPP_ALLSTATIONS;
-	    dp[1] = PPP_UI;
-	    dp[2] = proto >> 8;
-	    dp[3] = proto;
-	}
-
-	/*
-	 * Now see if we have a compressed packet to decompress,
-	 * or a CCP packet to take notice of.
-	 */
-	proto = PPP_PROTOCOL(mp->b_rptr);
-	if (proto == PPP_CCP) {
-	    len = msgdsize(mp);
-	    if (mp->b_wptr < mp->b_rptr + len) {
-		PULLUP(mp, len);
-		if (mp == 0)
-		    goto bad;
-	    }
-	    ppp_comp_ccp(q, mp, 1);
-	} else if (proto == PPP_COMP) {
-	    if ((cp->flags & CCP_ISUP)
-		&& (cp->flags & CCP_DECOMP_RUN) && cp->rstate
-		&& (cp->flags & CCP_ERR) == 0) {
-		rv = (*cp->rcomp->decompress)(cp->rstate, mp, &dmp);
-		switch (rv) {
-		case DECOMP_OK:
-		    freemsg(mp);
-		    mp = dmp;
-		    if (mp == NULL) {
-			/* no error, but no packet returned either. */
-			continue;
-		    }
-		    break;
-		case DECOMP_ERROR:
-		    cp->flags |= CCP_ERROR;
-		    ++cp->stats.ppp_ierrors;
-		    putctl1(q->q_next, M_CTL, PPPCTL_IERROR);
-		    break;
-		case DECOMP_FATALERROR:
-		    cp->flags |= CCP_FATALERROR;
-		    ++cp->stats.ppp_ierrors;
-		    putctl1(q->q_next, M_CTL, PPPCTL_IERROR);
-		    break;
-		}
-	    }
-	} else if (cp->rstate && (cp->flags & CCP_DECOMP_RUN)) {
-	    (*cp->rcomp->incomp)(cp->rstate, mp);
-	}
-
-	/*
-	 * Now do VJ decompression.
-	 */
-	proto = PPP_PROTOCOL(mp->b_rptr);
-	if (proto == PPP_VJC_COMP || proto == PPP_VJC_UNCOMP) {
-	    len = msgdsize(mp) - PPP_HDRLEN;
-	    if ((cp->flags & DECOMP_VJC) == 0 || len <= 0)
-		goto bad;
-
-	    /*
-	     * Advance past the ppp header.
-	     * Here we assume that the whole PPP header is in the first mblk.
-	     */
-	    np = mp;
-	    dp = np->b_rptr + PPP_HDRLEN;
-	    if (dp >= mp->b_wptr) {
-		np = np->b_cont;
-		dp = np->b_rptr;
-	    }
-
-	    /*
-	     * Make sure we have sufficient contiguous data at this point.
-	     */
-	    hlen = (proto == PPP_VJC_COMP)? MAX_VJHDR: MAX_IPHDR;
-	    if (hlen > len)
-		hlen = len;
-	    if (np->b_wptr < dp + hlen || np->b_datap->db_ref > 1) {
-		PULLUP(mp, hlen + PPP_HDRLEN);
-		if (mp == 0)
-		    goto bad;
-		np = mp;
-		dp = np->b_rptr + PPP_HDRLEN;
-	    }
-
-	    if (proto == PPP_VJC_COMP) {
-		/*
-		 * Decompress VJ-compressed packet.
-		 * First reset compressor if an input error has occurred.
-		 */
-		if (cp->stats.ppp_ierrors != cp->vj_last_ierrors) {
-		    if (cp->flags & DBGLOG)
-			DPRINT1("ppp%d: resetting VJ\n", cp->unit);
-		    vj_uncompress_err(&cp->vj_comp);
-		    cp->vj_last_ierrors = cp->stats.ppp_ierrors;
-		}
-
-		vjlen = vj_uncompress_tcp(dp, np->b_wptr - dp, len,
-					  &cp->vj_comp, &iphdr, &iphlen);
-		if (vjlen < 0) {
-		    if (cp->flags & DBGLOG)
-			DPRINT2("ppp%d: vj_uncomp_tcp failed, pkt len %d\n",
-				cp->unit, len);
-		    ++cp->vj_last_ierrors;  /* so we don't reset next time */
-		    goto bad;
-		}
-
-		/* drop ppp and vj headers off */
-		if (mp != np) {
-		    freeb(mp);
-		    mp = np;
-		}
-		mp->b_rptr = dp + vjlen;
-
-		/* allocate a new mblk for the ppp and ip headers */
-		if ((np = allocb(iphlen + PPP_HDRLEN + 4, BPRI_MED)) == 0)
-		    goto bad;
-		dp = np->b_rptr;	/* prepend mblk with TCP/IP hdr */
-		dp[0] = PPP_ALLSTATIONS; /* reconstruct PPP header */
-		dp[1] = PPP_UI;
-		dp[2] = PPP_IP >> 8;
-		dp[3] = PPP_IP;
-		bcopy((caddr_t)iphdr, (caddr_t)dp + PPP_HDRLEN, iphlen);
-		np->b_wptr = dp + iphlen + PPP_HDRLEN;
-		np->b_cont = mp;
-
-		/* XXX there seems to be a bug which causes panics in strread
-		   if we make an mbuf with only the IP header in it :-( */
-		if (mp->b_wptr - mp->b_rptr > 4) {
-		    bcopy((caddr_t)mp->b_rptr, (caddr_t)np->b_wptr, 4);
-		    mp->b_rptr += 4;
-		    np->b_wptr += 4;
-		} else {
-		    bcopy((caddr_t)mp->b_rptr, (caddr_t)np->b_wptr,
-			  mp->b_wptr - mp->b_rptr);
-		    np->b_wptr += mp->b_wptr - mp->b_rptr;
-		    np->b_cont = mp->b_cont;
-		    freeb(mp);
-		}
-
-		mp = np;
-
-	    } else {
-		/*
-		 * "Decompress" a VJ-uncompressed packet.
-		 */
-		cp->vj_last_ierrors = cp->stats.ppp_ierrors;
-		if (!vj_uncompress_uncomp(dp, hlen, &cp->vj_comp)) {
-		    if (cp->flags & DBGLOG)
-			DPRINT2("ppp%d: vj_uncomp_uncomp failed, pkt len %d\n",
-				cp->unit, len);
-		    ++cp->vj_last_ierrors;  /* don't need to reset next time */
-		    goto bad;
-		}
-		mp->b_rptr[3] = PPP_IP;	/* fix up the PPP protocol field */
-	    }
-	}
-
-	putnext(q, mp);
-	continue;
-
-    bad:
-	if (mp != 0)
-	    freemsg(mp);
-	cp->stats.ppp_ierrors++;
-	putctl1(q->q_next, M_CTL, PPPCTL_IERROR);
-    }
-
-    return 0;
-}
-
-/*
- * Handle a CCP packet being sent or received.
- * Here all the data in the packet is in a single mbuf.
- */
-static void
-ppp_comp_ccp(q, mp, rcvd)
-    queue_t *q;
-    mblk_t *mp;
-    int rcvd;
-{
-    int len, clen;
-    comp_state_t *cp;
-    unsigned char *dp;
-
-    len = msgdsize(mp);
-    if (len < PPP_HDRLEN + CCP_HDRLEN)
-	return;
-
-    cp = (comp_state_t *) q->q_ptr;
-    dp = mp->b_rptr + PPP_HDRLEN;
-    len -= PPP_HDRLEN;
-    clen = CCP_LENGTH(dp);
-    if (clen > len)
-	return;
-
-    switch (CCP_CODE(dp)) {
-    case CCP_CONFREQ:
-    case CCP_TERMREQ:
-    case CCP_TERMACK:
-	cp->flags &= ~CCP_ISUP;
-	break;
-
-    case CCP_CONFACK:
-	if ((cp->flags & (CCP_ISOPEN | CCP_ISUP)) == CCP_ISOPEN
-	    && clen >= CCP_HDRLEN + CCP_OPT_MINLEN
-	    && clen >= CCP_HDRLEN + CCP_OPT_LENGTH(dp + CCP_HDRLEN)) {
-	    if (!rcvd) {
-		if (cp->xstate != NULL
-		    && (*cp->xcomp->comp_init)
-		        (cp->xstate, dp + CCP_HDRLEN, clen - CCP_HDRLEN,
-			 cp->unit, 0, ((cp->flags & DBGLOG) != 0)))
-		    cp->flags |= CCP_COMP_RUN;
-	    } else {
-		if (cp->rstate != NULL
-		    && (*cp->rcomp->decomp_init)
-		        (cp->rstate, dp + CCP_HDRLEN, clen - CCP_HDRLEN,
-			 cp->unit, 0, cp->mru, ((cp->flags & DBGLOG) != 0)))
-		    cp->flags = (cp->flags & ~CCP_ERR) | CCP_DECOMP_RUN;
-	    }
-	}
-	break;
-
-    case CCP_RESETACK:
-	if (cp->flags & CCP_ISUP) {
-	    if (!rcvd) {
-		if (cp->xstate && (cp->flags & CCP_COMP_RUN))
-		    (*cp->xcomp->comp_reset)(cp->xstate);
-	    } else {
-		if (cp->rstate && (cp->flags & CCP_DECOMP_RUN)) {
-		    (*cp->rcomp->decomp_reset)(cp->rstate);
-		    cp->flags &= ~CCP_ERROR;
-		}
-	    }
-	}
-	break;
-    }
-}
-
-#if 0
-dump_msg(mp)
-    mblk_t *mp;
-{
-    dblk_t *db;
-
-    while (mp != 0) {
-	db = mp->b_datap;
-	DPRINT2("mp=%x cont=%x ", mp, mp->b_cont);
-	DPRINT3("rptr=%x wptr=%x datap=%x\n", mp->b_rptr, mp->b_wptr, db);
-	DPRINT2("  base=%x lim=%x", db->db_base, db->db_lim);
-	DPRINT2(" ref=%d type=%d\n", db->db_ref, db->db_type);
-	mp = mp->b_cont;
-    }
-}
-#endif
-
-static int
-msg_byte(mp, i)
-    mblk_t *mp;
-    unsigned int i;
-{
-    while (mp != 0 && i >= mp->b_wptr - mp->b_rptr)
-	mp = mp->b_cont;
-    if (mp == 0)
-	return -1;
-    return mp->b_rptr[i];
-}
diff --git a/mdk-stage1/ppp/solaris/ppp_comp_mod.c b/mdk-stage1/ppp/solaris/ppp_comp_mod.c
deleted file mode 100644
index 83ff8e252..000000000
--- a/mdk-stage1/ppp/solaris/ppp_comp_mod.c
+++ /dev/null
@@ -1,81 +0,0 @@
-/*
- * ppp_comp_mod.c - modload support for PPP compression STREAMS module.
- *
- * Copyright (c) 1994 The Australian National University.
- * All rights reserved.
- *
- * Permission to use, copy, modify, and distribute this software and its
- * documentation is hereby granted, provided that the above copyright
- * notice appears in all copies.  This software is provided without any
- * warranty, express or implied. The Australian National University
- * makes no representations about the suitability of this software for
- * any purpose.
- *
- * IN NO EVENT SHALL THE AUSTRALIAN NATIONAL UNIVERSITY BE LIABLE TO ANY
- * PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
- * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF
- * THE AUSTRALIAN NATIONAL UNIVERSITY HAVE BEEN ADVISED OF THE POSSIBILITY
- * OF SUCH DAMAGE.
- *
- * THE AUSTRALIAN NATIONAL UNIVERSITY SPECIFICALLY DISCLAIMS ANY WARRANTIES,
- * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
- * AND FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
- * ON AN "AS IS" BASIS, AND THE AUSTRALIAN NATIONAL UNIVERSITY HAS NO
- * OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS,
- * OR MODIFICATIONS.
- *
- * $Id$
- */
-
-/*
- * This file is used under Solaris 2.
- */
-#include <sys/types.h>
-#include <sys/param.h>
-#include <sys/conf.h>
-#include <sys/modctl.h>
-#include <sys/sunddi.h>
-
-extern struct streamtab ppp_compinfo;
-
-static struct fmodsw fsw = {
-    "ppp_comp",
-    &ppp_compinfo,
-    D_NEW | D_MP | D_MTQPAIR
-};
-
-extern struct mod_ops mod_strmodops;
-
-static struct modlstrmod modlstrmod = {
-    &mod_strmodops,
-    "PPP compression module",
-    &fsw
-};
-
-static struct modlinkage modlinkage = {
-    MODREV_1,
-    (void *) &modlstrmod,
-    NULL
-};
-
-/*
- * Entry points for modloading.
- */
-int
-_init(void)
-{
-    return mod_install(&modlinkage);
-}
-
-int
-_fini(void)
-{
-    return mod_remove(&modlinkage);
-}
-
-int
-_info(mip)
-    struct modinfo *mip;
-{
-    return mod_info(&modlinkage, mip);
-}
diff --git a/mdk-stage1/ppp/solaris/ppp_mod.c b/mdk-stage1/ppp/solaris/ppp_mod.c
deleted file mode 100644
index a4b1538a5..000000000
--- a/mdk-stage1/ppp/solaris/ppp_mod.c
+++ /dev/null
@@ -1,174 +0,0 @@
-/*
- * ppp_mod.c - modload support for PPP pseudo-device driver.
- *
- * Copyright (c) 1994 The Australian National University.
- * All rights reserved.
- *
- * Permission to use, copy, modify, and distribute this software and its
- * documentation is hereby granted, provided that the above copyright
- * notice appears in all copies.  This software is provided without any
- * warranty, express or implied. The Australian National University
- * makes no representations about the suitability of this software for
- * any purpose.
- *
- * IN NO EVENT SHALL THE AUSTRALIAN NATIONAL UNIVERSITY BE LIABLE TO ANY
- * PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
- * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF
- * THE AUSTRALIAN NATIONAL UNIVERSITY HAVE BEEN ADVISED OF THE POSSIBILITY
- * OF SUCH DAMAGE.
- *
- * THE AUSTRALIAN NATIONAL UNIVERSITY SPECIFICALLY DISCLAIMS ANY WARRANTIES,
- * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
- * AND FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
- * ON AN "AS IS" BASIS, AND THE AUSTRALIAN NATIONAL UNIVERSITY HAS NO
- * OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS,
- * OR MODIFICATIONS.
- *
- * $Id$
- */
-
-/*
- * This file is used under Solaris 2.
- */
-
-#include <sys/types.h>
-#include <sys/param.h>
-#include <sys/stat.h>
-#include <sys/conf.h>
-#include <sys/modctl.h>
-#include <sys/sunddi.h>
-#include <sys/ksynch.h>
-
-#ifdef __STDC__
-#define __P(x)	x
-#else
-#define __P(x)	()
-#endif
-
-static int ppp_identify __P((dev_info_t *));
-static int ppp_attach __P((dev_info_t *, ddi_attach_cmd_t));
-static int ppp_detach __P((dev_info_t *, ddi_detach_cmd_t));
-static int ppp_devinfo __P((dev_info_t *, ddi_info_cmd_t, void *, void **));
-
-extern struct streamtab pppinfo;
-extern krwlock_t ppp_lower_lock;
-
-static dev_info_t *ppp_dip;
-
-static struct cb_ops cb_ppp_ops = {
-    nulldev, nulldev, nodev, nodev,	/* cb_open, ... */
-    nodev, nodev, nodev, nodev,		/* cb_dump, ... */
-    nodev, nodev, nodev, nochpoll,	/* cb_devmap, ... */
-    ddi_prop_op,			/* cb_prop_op */
-    &pppinfo,				/* cb_stream */
-    D_NEW|D_MP|D_MTQPAIR|D_MTOUTPERIM|D_MTOCEXCL	/* cb_flag */
-};
-
-static struct dev_ops ppp_ops = {
-    DEVO_REV,				/* devo_rev */
-    0,					/* devo_refcnt */
-    ppp_devinfo,			/* devo_getinfo */
-    ppp_identify,			/* devo_identify */
-    nulldev,				/* devo_probe */
-    ppp_attach,				/* devo_attach */
-    ppp_detach,				/* devo_detach */
-    nodev,				/* devo_reset */
-    &cb_ppp_ops,			/* devo_cb_ops */
-    NULL				/* devo_bus_ops */
-};
-
-/*
- * Module linkage information
- */
-
-static struct modldrv modldrv = {
-    &mod_driverops,			/* says this is a pseudo driver */
-    "PPP-2.3 multiplexing driver",
-    &ppp_ops				/* driver ops */
-};
-
-static struct modlinkage modlinkage = {
-    MODREV_1,
-    (void *) &modldrv,
-    NULL
-};
-
-int
-_init(void)
-{
-    return mod_install(&modlinkage);
-}
-
-int
-_fini(void)
-{
-    return mod_remove(&modlinkage);
-}
-
-int
-_info(mip)
-    struct modinfo *mip;
-{
-    return mod_info(&modlinkage, mip);
-}
-
-static int
-ppp_identify(dip)
-    dev_info_t *dip;
-{
-    return strcmp(ddi_get_name(dip), "ppp") == 0? DDI_IDENTIFIED:
-	DDI_NOT_IDENTIFIED;
-}
-
-static int
-ppp_attach(dip, cmd)
-    dev_info_t *dip;
-    ddi_attach_cmd_t cmd;
-{
-
-    if (cmd != DDI_ATTACH)
-	return DDI_FAILURE;
-    if (ddi_create_minor_node(dip, "ppp", S_IFCHR, 0, DDI_PSEUDO, CLONE_DEV)
-	== DDI_FAILURE) {
-	ddi_remove_minor_node(dip, NULL);
-	return DDI_FAILURE;
-    }
-    rw_init(&ppp_lower_lock, NULL, RW_DRIVER, NULL);
-    return DDI_SUCCESS;
-}
-
-static int
-ppp_detach(dip, cmd)
-    dev_info_t *dip;
-    ddi_detach_cmd_t cmd;
-{
-    rw_destroy(&ppp_lower_lock);
-    ddi_remove_minor_node(dip, NULL);
-    return DDI_SUCCESS;
-}
-
-static int
-ppp_devinfo(dip, cmd, arg, result)
-    dev_info_t *dip;
-    ddi_info_cmd_t cmd;
-    void *arg;
-    void **result;
-{
-    int error;
-
-    error = DDI_SUCCESS;
-    switch (cmd) {
-    case DDI_INFO_DEVT2DEVINFO:
-	if (ppp_dip == NULL)
-	    error = DDI_FAILURE;
-	else
-	    *result = (void *) ppp_dip;
-	break;
-    case DDI_INFO_DEVT2INSTANCE:
-	*result = NULL;
-	break;
-    default:
-	error = DDI_FAILURE;
-    }
-    return error;
-}
diff --git a/mdk-stage1/ppp/solaris/ppp_mod.h b/mdk-stage1/ppp/solaris/ppp_mod.h
deleted file mode 100644
index f0af00886..000000000
--- a/mdk-stage1/ppp/solaris/ppp_mod.h
+++ /dev/null
@@ -1,190 +0,0 @@
-/*
- * Miscellaneous definitions for PPP STREAMS modules.
- */
-
-/*
- * Macros for allocating and freeing kernel memory.
- */
-#ifdef SVR4			/* SVR4, including Solaris 2 */
-#include <sys/kmem.h>
-#define ALLOC_SLEEP(n)		kmem_alloc((n), KM_SLEEP)
-#define ALLOC_NOSLEEP(n)	kmem_alloc((n), KM_NOSLEEP)
-#define FREE(p, n)		kmem_free((p), (n))
-#endif
-
-#ifdef SUNOS4
-#include <sys/kmem_alloc.h>	/* SunOS 4.x */
-#define ALLOC_SLEEP(n)		kmem_alloc((n), KMEM_SLEEP)
-#define ALLOC_NOSLEEP(n)	kmem_alloc((n), KMEM_NOSLEEP)
-#define FREE(p, n)		kmem_free((p), (n))
-#define NOTSUSER()		(suser()? 0: EPERM)
-#define bcanputnext(q, band)	canputnext((q))
-#endif /* SunOS 4 */
-
-#ifdef __osf__
-#include <sys/malloc.h>
-
-/* caution: this mirrors macros in sys/malloc.h, and uses interfaces
- * which are subject to change.
- * The problems are that:
- *     - the official MALLOC macro wants the lhs of the assignment as an argument,
- *	 and it takes care of the assignment itself (yuck.)
- *     - PPP insists on using "FREE" which conflicts with a macro of the same name.
- *
- */
-#ifdef BUCKETINDX /* V2.0 */
-#define ALLOC_SLEEP(n)		(void *)malloc((u_long)(n), BUCKETP(n), M_DEVBUF, M_WAITOK)
-#define ALLOC_NOSLEEP(n)	(void *)malloc((u_long)(n), BUCKETP(n), M_DEVBUF, M_NOWAIT)
-#else
-#define ALLOC_SLEEP(n)		(void *)malloc((u_long)(n), BUCKETINDEX(n), M_DEVBUF, M_WAITOK)
-#define ALLOC_NOSLEEP(n)	(void *)malloc((u_long)(n), BUCKETINDEX(n), M_DEVBUF, M_NOWAIT)
-#endif
-
-#define bcanputnext(q, band)	canputnext((q))
-
-#ifdef FREE
-#undef FREE
-#endif
-#define FREE(p, n)		free((void *)(p), M_DEVBUF)
-
-#define NO_DLPI 1
-
-#ifndef IFT_PPP
-#define IFT_PPP 0x17
-#endif
-
-#include <sys/proc.h>
-#define NOTSUSER()		(suser(u.u_procp->p_rcred, &u.u_acflag) ? EPERM : 0)
-
-/* #include "ppp_osf.h" */
-
-#endif /* __osf__ */
-
-#ifdef AIX4
-#define ALLOC_SLEEP(n)		xmalloc((n), 0, pinned_heap)	/* AIX V4.x */
-#define ALLOC_NOSLEEP(n)	xmalloc((n), 0, pinned_heap)	/* AIX V4.x */
-#define FREE(p, n)		xmfree((p), pinned_heap)
-#define NOTSUSER()		(suser()? 0: EPERM)
-#endif /* AIX */
-
-/*
- * Macros for printing debugging stuff.
- */
-#ifdef DEBUG
-#if defined(SVR4) || defined(__osf__)
-#if defined(SNI)
-#include <sys/strlog.h>
-#define STRLOG_ID		4712
-#define DPRINT(f)		strlog(STRLOG_ID, 0, 0, SL_TRACE, f)
-#define DPRINT1(f, a1)		strlog(STRLOG_ID, 0, 0, SL_TRACE, f, a1)
-#define DPRINT2(f, a1, a2)	strlog(STRLOG_ID, 0, 0, SL_TRACE, f, a1, a2)
-#define DPRINT3(f, a1, a2, a3)	strlog(STRLOG_ID, 0, 0, SL_TRACE, f, a1, a2, a3)
-#else
-#define DPRINT(f)		cmn_err(CE_CONT, f)
-#define DPRINT1(f, a1)		cmn_err(CE_CONT, f, a1)
-#define DPRINT2(f, a1, a2)	cmn_err(CE_CONT, f, a1, a2)
-#define DPRINT3(f, a1, a2, a3)	cmn_err(CE_CONT, f, a1, a2, a3)
-#endif /* SNI */
-#else
-#define DPRINT(f)		printf(f)
-#define DPRINT1(f, a1)		printf(f, a1)
-#define DPRINT2(f, a1, a2)	printf(f, a1, a2)
-#define DPRINT3(f, a1, a2, a3)	printf(f, a1, a2, a3)
-#endif /* SVR4 or OSF */
-
-#else
-#define DPRINT(f)		0
-#define DPRINT1(f, a1)		0
-#define DPRINT2(f, a1, a2)	0
-#define DPRINT3(f, a1, a2, a3)	0
-#endif /* DEBUG */
-
-#ifndef SVR4
-typedef unsigned char uchar_t;
-typedef unsigned short ushort_t;
-#ifndef __osf__
-typedef int minor_t;
-#endif
-#endif
-
-/*
- * If we don't have multithreading support, define substitutes.
- */
-#ifndef D_MP
-# define qprocson(q)
-# define qprocsoff(q)
-# define put(q, mp)	((*(q)->q_qinfo->qi_putp)((q), (mp)))
-# define canputnext(q)	canput((q)->q_next)
-# define qwriter(q, mp, func, scope)	(func)((q), (mp))
-#endif
-
-#ifdef D_MP
-/* Use msgpullup if we have other multithreading support. */
-#define PULLUP(mp, len)				\
-    do {					\
-	mblk_t *np = msgpullup((mp), (len));	\
-	freemsg((mp));				\
-	mp = np;				\
-    } while (0)
-
-#else
-/* Use pullupmsg if we don't have any multithreading support. */
-#define PULLUP(mp, len)			\
-    do {				\
-	if (!pullupmsg((mp), (len))) {	\
-	    freemsg((mp));		\
-	    mp = 0;			\
-	}				\
-    } while (0)
-#endif
-
-/*
- * How to declare the open and close procedures for a module.
- */
-#ifdef SVR4
-#define MOD_OPEN_DECL(name)	\
-static int name __P((queue_t *, dev_t *, int, int, cred_t *))
-
-#define MOD_CLOSE_DECL(name)	\
-static int name __P((queue_t *, int, cred_t *))
-
-#define MOD_OPEN(name)				\
-static int name(q, devp, flag, sflag, credp)	\
-    queue_t *q;					\
-    dev_t *devp;				\
-    int flag, sflag;				\
-    cred_t *credp;
-
-#define MOD_CLOSE(name)		\
-static int name(q, flag, credp)	\
-    queue_t *q;			\
-    int flag;			\
-    cred_t *credp;
-
-#define OPEN_ERROR(x)		return (x)
-#define DRV_OPEN_OK(dev)	return 0
-
-#define NOTSUSER()		(drv_priv(credp))
-
-#else	/* not SVR4 */
-#define MOD_OPEN_DECL(name)	\
-static int name __P((queue_t *, int, int, int))
-
-#define MOD_CLOSE_DECL(name)	\
-static int name __P((queue_t *, int))
-
-#define MOD_OPEN(name)		\
-static int name(q, dev, flag, sflag)	\
-    queue_t *q;				\
-    int dev;				\
-    int flag, sflag;
-
-#define MOD_CLOSE(name)		\
-static int name(q, flag)	\
-    queue_t *q;			\
-    int flag;
-
-#define OPEN_ERROR(x)		{ u.u_error = (x); return OPENFAIL; }
-#define DRV_OPEN_OK(dev)	return (dev)
-
-#endif	/* SVR4 */