Initial revision

11 files changed, 1671 insertions, 0 deletions

diff --git a/mdk-stage1/ppp/include/linux/if_ppp.h b/mdk-stage1/ppp/include/linux/if_ppp.h
new file mode 100644
index 000000000..1febf0931
--- /dev/null
+++ b/mdk-stage1/ppp/include/linux/if_ppp.h
@@ -0,0 +1,155 @@
+/*	$Id$	*/
+
+/*
+ * if_ppp.h - Point-to-Point Protocol definitions.
+ *
+ * Copyright (c) 1989 Carnegie Mellon University.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms are permitted
+ * provided that the above copyright notice and this paragraph are
+ * duplicated in all such forms and that any documentation,
+ * advertising materials, and other materials related to such
+ * distribution and use acknowledge that the software was developed
+ * by Carnegie Mellon University.  The name of the
+ * University may not be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
+ * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ */
+
+/*
+ *  ==FILEVERSION 20000724==
+ *
+ *  NOTE TO MAINTAINERS:
+ *     If you modify this file at all, please set the above date.
+ *     if_ppp.h is shipped with a PPP distribution as well as with the kernel;
+ *     if everyone increases the FILEVERSION number above, then scripts
+ *     can do the right thing when deciding whether to install a new if_ppp.h
+ *     file.  Don't change the format of that line otherwise, so the
+ *     installation script can recognize it.
+ */
+
+#ifndef _IF_PPP_H_
+#define _IF_PPP_H_
+
+/*
+ * Packet sizes
+ */
+
+#define	PPP_MTU		1500	/* Default MTU (size of Info field) */
+#define PPP_MAXMRU	65000	/* Largest MRU we allow */
+#define PROTO_IPX	0x002b	/* protocol numbers */
+#define PROTO_DNA_RT    0x0027  /* DNA Routing */
+
+
+/*
+ * Bit definitions for flags.
+ */
+
+#define SC_COMP_PROT	0x00000001	/* protocol compression (output) */
+#define SC_COMP_AC	0x00000002	/* header compression (output) */
+#define	SC_COMP_TCP	0x00000004	/* TCP (VJ) compression (output) */
+#define SC_NO_TCP_CCID	0x00000008	/* disable VJ connection-id comp. */
+#define SC_REJ_COMP_AC	0x00000010	/* reject adrs/ctrl comp. on input */
+#define SC_REJ_COMP_TCP	0x00000020	/* reject TCP (VJ) comp. on input */
+#define SC_CCP_OPEN	0x00000040	/* Look at CCP packets */
+#define SC_CCP_UP	0x00000080	/* May send/recv compressed packets */
+#define SC_ENABLE_IP	0x00000100	/* IP packets may be exchanged */
+#define SC_LOOP_TRAFFIC	0x00000200	/* send traffic to pppd */
+#define SC_MULTILINK	0x00000400	/* do multilink encapsulation */
+#define SC_MP_SHORTSEQ	0x00000800	/* use short MP sequence numbers */
+#define SC_COMP_RUN	0x00001000	/* compressor has been inited */
+#define SC_DECOMP_RUN	0x00002000	/* decompressor has been inited */
+#define SC_MP_XSHORTSEQ	0x00004000	/* transmit short MP seq numbers */
+#define SC_DEBUG	0x00010000	/* enable debug messages */
+#define SC_LOG_INPKT	0x00020000	/* log contents of good pkts recvd */
+#define SC_LOG_OUTPKT	0x00040000	/* log contents of pkts sent */
+#define SC_LOG_RAWIN	0x00080000	/* log all chars received */
+#define SC_LOG_FLUSH	0x00100000	/* log all chars flushed */
+#define	SC_SYNC		0x00200000	/* synchronous serial mode */
+#define	SC_MASK		0x0f200fff	/* bits that user can change */
+
+/* state bits */
+#define SC_XMIT_BUSY	0x10000000	/* (used by isdn_ppp?) */
+#define SC_RCV_ODDP	0x08000000	/* have rcvd char with odd parity */
+#define SC_RCV_EVNP	0x04000000	/* have rcvd char with even parity */
+#define SC_RCV_B7_1	0x02000000	/* have rcvd char with bit 7 = 1 */
+#define SC_RCV_B7_0	0x01000000	/* have rcvd char with bit 7 = 0 */
+#define SC_DC_FERROR	0x00800000	/* fatal decomp error detected */
+#define SC_DC_ERROR	0x00400000	/* non-fatal decomp error detected */
+
+/*
+ * Ioctl definitions.
+ */
+
+struct npioctl {
+	int		protocol;	/* PPP protocol, e.g. PPP_IP */
+	enum NPmode	mode;
+};
+
+/* Structure describing a CCP configuration option, for PPPIOCSCOMPRESS */
+struct ppp_option_data {
+	__u8	*ptr;
+	__u32	length;
+	int	transmit;
+};
+
+struct ifpppstatsreq {
+	struct ifreq	 b;
+	struct ppp_stats stats;			/* statistic information */
+};
+
+struct ifpppcstatsreq {
+	struct ifreq	      b;
+	struct ppp_comp_stats stats;
+};
+
+#define ifr__name       b.ifr_ifrn.ifrn_name
+#define stats_ptr       b.ifr_ifru.ifru_data
+
+/*
+ * Ioctl definitions.
+ */
+
+#define	PPPIOCGFLAGS	_IOR('t', 90, int)	/* get configuration flags */
+#define	PPPIOCSFLAGS	_IOW('t', 89, int)	/* set configuration flags */
+#define	PPPIOCGASYNCMAP	_IOR('t', 88, int)	/* get async map */
+#define	PPPIOCSASYNCMAP	_IOW('t', 87, int)	/* set async map */
+#define	PPPIOCGUNIT	_IOR('t', 86, int)	/* get ppp unit number */
+#define	PPPIOCGRASYNCMAP _IOR('t', 85, int)	/* get receive async map */
+#define	PPPIOCSRASYNCMAP _IOW('t', 84, int)	/* set receive async map */
+#define	PPPIOCGMRU	_IOR('t', 83, int)	/* get max receive unit */
+#define	PPPIOCSMRU	_IOW('t', 82, int)	/* set max receive unit */
+#define	PPPIOCSMAXCID	_IOW('t', 81, int)	/* set VJ max slot ID */
+#define PPPIOCGXASYNCMAP _IOR('t', 80, ext_accm) /* get extended ACCM */
+#define PPPIOCSXASYNCMAP _IOW('t', 79, ext_accm) /* set extended ACCM */
+#define PPPIOCXFERUNIT	_IO('t', 78)		/* transfer PPP unit */
+#define PPPIOCSCOMPRESS	_IOW('t', 77, struct ppp_option_data)
+#define PPPIOCGNPMODE	_IOWR('t', 76, struct npioctl) /* get NP mode */
+#define PPPIOCSNPMODE	_IOW('t', 75, struct npioctl)  /* set NP mode */
+#define PPPIOCSPASS	_IOW('t', 71, struct sock_fprog) /* set pass filter */
+#define PPPIOCSACTIVE	_IOW('t', 70, struct sock_fprog) /* set active filt */
+#define PPPIOCGDEBUG	_IOR('t', 65, int)	/* Read debug level */
+#define PPPIOCSDEBUG	_IOW('t', 64, int)	/* Set debug level */
+#define PPPIOCGIDLE	_IOR('t', 63, struct ppp_idle) /* get idle time */
+#define PPPIOCNEWUNIT	_IOWR('t', 62, int)	/* create new ppp unit */
+#define PPPIOCATTACH	_IOW('t', 61, int)	/* attach to ppp unit */
+#define PPPIOCDETACH	_IOW('t', 60, int)	/* detach from ppp unit/chan */
+#define PPPIOCSMRRU	_IOW('t', 59, int)	/* set multilink MRU */
+#define PPPIOCCONNECT	_IOW('t', 58, int)	/* connect channel to unit */
+#define PPPIOCDISCONN	_IO('t', 57)		/* disconnect channel */
+#define PPPIOCATTCHAN	_IOW('t', 56, int)	/* attach to ppp channel */
+#define PPPIOCGCHAN	_IOR('t', 55, int)	/* get ppp channel number */
+
+#define SIOCGPPPSTATS   (SIOCDEVPRIVATE + 0)
+#define SIOCGPPPVER     (SIOCDEVPRIVATE + 1)	/* NEVER change this!! */
+#define SIOCGPPPCSTATS  (SIOCDEVPRIVATE + 2)
+
+#if !defined(ifr_mtu)
+#define ifr_mtu	ifr_ifru.ifru_metric
+#endif
+
+#endif /* _IF_PPP_H_ */
diff --git a/mdk-stage1/ppp/include/linux/if_pppvar.h b/mdk-stage1/ppp/include/linux/if_pppvar.h
new file mode 100644
index 000000000..b2485cd9d
--- /dev/null
+++ b/mdk-stage1/ppp/include/linux/if_pppvar.h
@@ -0,0 +1,138 @@
+/*	From: if_pppvar.h,v 1.2 1995/06/12 11:36:51 paulus Exp */
+/*
+ * if_pppvar.h - private structures and declarations 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 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.
+ *
+ * Copyright (c) 1989 Carnegie Mellon University.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms are permitted
+ * provided that the above copyright notice and this paragraph are
+ * duplicated in all such forms and that any documentation,
+ * advertising materials, and other materials related to such
+ * distribution and use acknowledge that the software was developed
+ * by Carnegie Mellon University.  The name of the
+ * University may not be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
+ * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ */
+
+/*
+ *  ==FILEVERSION 990911==
+ *
+ *  NOTE TO MAINTAINERS:
+ *   If you modify this file at all, please set the above date.
+ *   if_pppvar.h is shipped with a PPP distribution as well as with the kernel;
+ *   if everyone increases the FILEVERSION number above, then scripts
+ *   can do the right thing when deciding whether to install a new if_pppvar.h
+ *   file.  Don't change the format of that line otherwise, so the
+ *   installation script can recognize it.
+ */
+
+/*
+ * Supported network protocols.  These values are used for
+ * indexing sc_npmode.
+ */
+
+#define NP_IP	0		/* Internet Protocol */
+#define NP_IPX	1		/* IPX protocol */
+#define NP_AT	2		/* Appletalk protocol */
+#define NP_IPV6	3		/* Internet Protocol */
+#define NUM_NP	4		/* Number of NPs. */
+
+#define OBUFSIZE	256	/* # chars of output buffering */
+
+/*
+ * Structure describing each ppp unit.
+ */
+
+struct ppp {
+	int		magic;		/* magic value for structure	*/
+	struct ppp	*next;		/* unit with next index		*/
+	unsigned long	inuse;		/* are we allocated?		*/
+	int		line;		/* network interface unit #	*/
+	__u32		flags;		/* miscellaneous control flags	*/
+	int		mtu;		/* maximum xmit frame size	*/
+	int		mru;		/* maximum receive frame size	*/
+	struct slcompress *slcomp;	/* for TCP header compression	*/
+	struct sk_buff_head xmt_q;	/* frames to send from pppd	*/
+	struct sk_buff_head rcv_q;	/* frames for pppd to read	*/
+	unsigned long	xmit_busy;	/* bit 0 set when xmitter busy  */
+
+	/* Information specific to using ppp on async serial lines. */
+	struct tty_struct *tty;		/* ptr to TTY structure	*/
+	struct tty_struct *backup_tty;	/* TTY to use if tty gets closed */
+	__u8		escape;		/* 0x20 if prev char was PPP_ESC */
+	__u8		toss;		/* toss this frame		*/
+	volatile __u8	tty_pushing;	/* internal state flag		*/
+	volatile __u8	woke_up;	/* internal state flag		*/
+	__u32		xmit_async_map[8]; /* 1 bit means that given control 
+					   character is quoted on output*/
+	__u32		recv_async_map; /* 1 bit means that given control 
+					   character is ignored on input*/
+	__u32		bytes_sent;	/* Bytes sent on frame	*/
+	__u32		bytes_rcvd;	/* Bytes recvd on frame	*/
+
+	/* Async transmission information */
+	struct sk_buff	*tpkt;		/* frame currently being sent	*/
+	int		tpkt_pos;	/* how much of it we've done	*/
+	__u16		tfcs;		/* FCS so far for it		*/
+	unsigned char	*optr;		/* where we're up to in sending */
+	unsigned char	*olim;		/* points past last valid char	*/
+
+	/* Async reception information */
+	struct sk_buff	*rpkt;		/* frame currently being rcvd	*/
+	__u16		rfcs;		/* FCS so far of rpkt		*/
+
+	/* Queues for select() functionality */
+	struct wait_queue *read_wait;	/* queue for reading processes	*/
+
+	/* info for detecting idle channels */
+	unsigned long	last_xmit;	/* time of last transmission	*/
+	unsigned long	last_recv;	/* time last packet received    */
+
+	/* Statistic information */
+	struct pppstat	stats;		/* statistic information	*/
+
+	/* PPP compression protocol information */
+	struct	compressor *sc_xcomp;	/* transmit compressor */
+	void	*sc_xc_state;		/* transmit compressor state */
+	struct	compressor *sc_rcomp;	/* receive decompressor */
+	void	*sc_rc_state;		/* receive decompressor state */
+
+	enum	NPmode sc_npmode[NUM_NP]; /* what to do with each NP */
+	int	 sc_xfer;		/* PID of reserved PPP table */
+	char	name[8];		/* space for unit name */
+	struct device	dev;		/* net device structure */
+	struct enet_statistics estats;	/* more detailed stats */
+
+	/* tty output buffer */
+	unsigned char	obuf[OBUFSIZE];	/* buffer for characters to send */
+};
+
+#define PPP_MAGIC	0x5002
+#define PPP_VERSION	"2.3.11"
diff --git a/mdk-stage1/ppp/include/linux/ppp-comp.h b/mdk-stage1/ppp/include/linux/ppp-comp.h
new file mode 100644
index 000000000..3184d0731
--- /dev/null
+++ b/mdk-stage1/ppp/include/linux/ppp-comp.h
@@ -0,0 +1,203 @@
+/*
+ * ppp-comp.h - Definitions for doing PPP packet compression.
+ *
+ * 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.
+ *
+ * $Id$
+ */
+
+/*
+ *  ==FILEVERSION 980319==
+ *
+ *  NOTE TO MAINTAINERS:
+ *     If you modify this file at all, please set the above date.
+ *     ppp-comp.h is shipped with a PPP distribution as well as with the kernel;
+ *     if everyone increases the FILEVERSION number above, then scripts
+ *     can do the right thing when deciding whether to install a new ppp-comp.h
+ *     file.  Don't change the format of that line otherwise, so the
+ *     installation script can recognize it.
+ */
+
+#ifndef _NET_PPP_COMP_H
+#define _NET_PPP_COMP_H
+
+/*
+ * The following symbols control whether we include code for
+ * various compression methods.
+ */
+
+#ifndef DO_BSD_COMPRESS
+#define DO_BSD_COMPRESS	1	/* by default, include BSD-Compress */
+#endif
+#ifndef DO_DEFLATE
+#define DO_DEFLATE	1	/* by default, include Deflate */
+#endif
+#define DO_PREDICTOR_1	0
+#define DO_PREDICTOR_2	0
+
+/*
+ * Structure giving methods for compression/decompression.
+ */
+
+struct compressor {
+	int	compress_proto;	/* CCP compression protocol number */
+
+	/* Allocate space for a compressor (transmit side) */
+	void	*(*comp_alloc) (unsigned char *options, int opt_len);
+
+	/* Free space used by a compressor */
+	void	(*comp_free) (void *state);
+
+	/* Initialize a compressor */
+	int	(*comp_init) (void *state, unsigned char *options,
+			      int opt_len, int unit, int opthdr, int debug);
+
+	/* Reset a compressor */
+	void	(*comp_reset) (void *state);
+
+	/* Compress a packet */
+	int     (*compress) (void *state, unsigned char *rptr,
+			      unsigned char *obuf, int isize, int osize);
+
+	/* Return compression statistics */
+	void	(*comp_stat) (void *state, struct compstat *stats);
+
+	/* Allocate space for a decompressor (receive side) */
+	void	*(*decomp_alloc) (unsigned char *options, int opt_len);
+
+	/* Free space used by a decompressor */
+	void	(*decomp_free) (void *state);
+
+	/* Initialize a decompressor */
+	int	(*decomp_init) (void *state, unsigned char *options,
+				int opt_len, int unit, int opthdr, int mru,
+				int debug);
+
+	/* Reset a decompressor */
+	void	(*decomp_reset) (void *state);
+
+	/* Decompress a packet. */
+	int	(*decompress) (void *state, unsigned char *ibuf, int isize,
+				unsigned char *obuf, int osize);
+
+	/* Update state for an incompressible packet received */
+	void	(*incomp) (void *state, unsigned char *ibuf, int icnt);
+
+	/* Return decompression statistics */
+	void	(*decomp_stat) (void *state, struct compstat *stats);
+};
+
+/*
+ * The return value from decompress routine is the length of the
+ * decompressed packet if successful, otherwise DECOMP_ERROR
+ * or DECOMP_FATALERROR if an error occurred.
+ * 
+ * We need to make this distinction so that we can disable certain
+ * useful functionality, namely sending a CCP reset-request as a result
+ * of an error detected after decompression.  This is to avoid infringing
+ * a patent held by Motorola.
+ * Don't you just lurve software patents.
+ */
+
+#define DECOMP_ERROR		-1	/* error detected before decomp. */
+#define DECOMP_FATALERROR	-2	/* error detected after decomp. */
+
+/*
+ * CCP codes.
+ */
+
+#define CCP_CONFREQ	1
+#define CCP_CONFACK	2
+#define CCP_TERMREQ	5
+#define CCP_TERMACK	6
+#define CCP_RESETREQ	14
+#define CCP_RESETACK	15
+
+/*
+ * Max # bytes for a CCP option
+ */
+
+#define CCP_MAX_OPTION_LENGTH	32
+
+/*
+ * Parts of a CCP packet.
+ */
+
+#define CCP_CODE(dp)		((dp)[0])
+#define CCP_ID(dp)		((dp)[1])
+#define CCP_LENGTH(dp)		(((dp)[2] << 8) + (dp)[3])
+#define CCP_HDRLEN		4
+
+#define CCP_OPT_CODE(dp)	((dp)[0])
+#define CCP_OPT_LENGTH(dp)	((dp)[1])
+#define CCP_OPT_MINLEN		2
+
+/*
+ * Definitions for BSD-Compress.
+ */
+
+#define CI_BSD_COMPRESS		21	/* config. option for BSD-Compress */
+#define CILEN_BSD_COMPRESS	3	/* length of config. option */
+
+/* Macros for handling the 3rd byte of the BSD-Compress config option. */
+#define BSD_NBITS(x)		((x) & 0x1F)	/* number of bits requested */
+#define BSD_VERSION(x)		((x) >> 5)	/* version of option format */
+#define BSD_CURRENT_VERSION	1		/* current version number */
+#define BSD_MAKE_OPT(v, n)	(((v) << 5) | (n))
+
+#define BSD_MIN_BITS		9	/* smallest code size supported */
+#define BSD_MAX_BITS		15	/* largest code size supported */
+
+/*
+ * Definitions for Deflate.
+ */
+
+#define CI_DEFLATE		26	/* config option for Deflate */
+#define CI_DEFLATE_DRAFT	24	/* value used in original draft RFC */
+#define CILEN_DEFLATE		4	/* length of its config option */
+
+#define DEFLATE_MIN_SIZE	8
+#define DEFLATE_MAX_SIZE	15
+#define DEFLATE_METHOD_VAL	8
+#define DEFLATE_SIZE(x)		(((x) >> 4) + DEFLATE_MIN_SIZE)
+#define DEFLATE_METHOD(x)	((x) & 0x0F)
+#define DEFLATE_MAKE_OPT(w)	((((w) - DEFLATE_MIN_SIZE) << 4) \
+				 + DEFLATE_METHOD_VAL)
+#define DEFLATE_CHK_SEQUENCE	0
+
+/*
+ * Definitions for other, as yet unsupported, compression methods.
+ */
+
+#define CI_PREDICTOR_1		1	/* config option for Predictor-1 */
+#define CILEN_PREDICTOR_1	2	/* length of its config option */
+#define CI_PREDICTOR_2		2	/* config option for Predictor-2 */
+#define CILEN_PREDICTOR_2	2	/* length of its config option */
+
+#ifdef __KERNEL__
+extern int ppp_register_compressor(struct compressor *);
+extern void ppp_unregister_compressor(struct compressor *);
+#endif /* __KERNEL__ */
+
+#endif /* _NET_PPP_COMP_H */
diff --git a/mdk-stage1/ppp/include/linux/ppp_defs.h b/mdk-stage1/ppp/include/linux/ppp_defs.h
new file mode 100644
index 000000000..46946fbdc
--- /dev/null
+++ b/mdk-stage1/ppp/include/linux/ppp_defs.h
@@ -0,0 +1,185 @@
+/*	$Id$	*/
+
+/*
+ * ppp_defs.h - PPP definitions.
+ *
+ * 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.
+ */
+
+/*
+ *  ==FILEVERSION 20000114==
+ *
+ *  NOTE TO MAINTAINERS:
+ *     If you modify this file at all, please set the above date.
+ *     ppp_defs.h is shipped with a PPP distribution as well as with the kernel;
+ *     if everyone increases the FILEVERSION number above, then scripts
+ *     can do the right thing when deciding whether to install a new ppp_defs.h
+ *     file.  Don't change the format of that line otherwise, so the
+ *     installation script can recognize it.
+ */
+
+#ifndef _PPP_DEFS_H_
+#define _PPP_DEFS_H_
+
+/*
+ * The basic PPP frame.
+ */
+#define PPP_HDRLEN	4	/* octets for standard ppp header */
+#define PPP_FCSLEN	2	/* octets for FCS */
+#define PPP_MRU		1500	/* default MRU = max length of info field */
+
+#define PPP_ADDRESS(p)	(((__u8 *)(p))[0])
+#define PPP_CONTROL(p)	(((__u8 *)(p))[1])
+#define PPP_PROTOCOL(p)	((((__u8 *)(p))[2] << 8) + ((__u8 *)(p))[3])
+
+/*
+ * Significant octet values.
+ */
+#define	PPP_ALLSTATIONS	0xff	/* All-Stations broadcast address */
+#define	PPP_UI		0x03	/* Unnumbered Information */
+#define	PPP_FLAG	0x7e	/* Flag Sequence */
+#define	PPP_ESCAPE	0x7d	/* Asynchronous Control Escape */
+#define	PPP_TRANS	0x20	/* Asynchronous transparency modifier */
+
+/*
+ * Protocol field values.
+ */
+#define PPP_IP		0x21	/* Internet Protocol */
+#define PPP_AT		0x29	/* AppleTalk Protocol */
+#define PPP_IPX		0x2b	/* IPX protocol */
+#define	PPP_VJC_COMP	0x2d	/* VJ compressed TCP */
+#define	PPP_VJC_UNCOMP	0x2f	/* VJ uncompressed TCP */
+#define PPP_MP		0x3d	/* Multilink protocol */
+#define PPP_IPV6	0x57	/* Internet Protocol Version 6 */
+#define PPP_COMPFRAG	0xfb	/* fragment compressed below bundle */
+#define PPP_COMP	0xfd	/* compressed packet */
+#define PPP_IPCP	0x8021	/* IP Control Protocol */
+#define PPP_ATCP	0x8029	/* AppleTalk Control Protocol */
+#define PPP_IPXCP	0x802b	/* IPX Control Protocol */
+#define PPP_IPV6CP	0x8057	/* IPv6 Control Protocol */
+#define PPP_CCPFRAG	0x80fb	/* CCP at link level (below MP bundle) */
+#define PPP_CCP		0x80fd	/* Compression Control Protocol */
+#define PPP_LCP		0xc021	/* Link Control Protocol */
+#define PPP_PAP		0xc023	/* Password Authentication Protocol */
+#define PPP_LQR		0xc025	/* Link Quality Report protocol */
+#define PPP_CHAP	0xc223	/* Cryptographic Handshake Auth. Protocol */
+#define PPP_CBCP	0xc029	/* Callback Control Protocol */
+
+/*
+ * Values for FCS calculations.
+ */
+
+#define PPP_INITFCS	0xffff	/* Initial FCS value */
+#define PPP_GOODFCS	0xf0b8	/* Good final FCS value */
+#define PPP_FCS(fcs, c)	(((fcs) >> 8) ^ fcstab[((fcs) ^ (c)) & 0xff])
+
+/*
+ * Extended asyncmap - allows any character to be escaped.
+ */
+
+typedef __u32		ext_accm[8];
+
+/*
+ * What to do with network protocol (NP) packets.
+ */
+enum NPmode {
+    NPMODE_PASS,		/* pass the packet through */
+    NPMODE_DROP,		/* silently drop the packet */
+    NPMODE_ERROR,		/* return an error */
+    NPMODE_QUEUE		/* save it up for later. */
+};
+
+/*
+ * Statistics for LQRP and pppstats
+ */
+struct pppstat	{
+    __u32	ppp_discards;	/* # frames discarded */
+
+    __u32	ppp_ibytes;	/* bytes received */
+    __u32	ppp_ioctects;	/* bytes received not in error */
+    __u32	ppp_ipackets;	/* packets received */
+    __u32	ppp_ierrors;	/* receive errors */
+    __u32	ppp_ilqrs;	/* # LQR frames received */
+
+    __u32	ppp_obytes;	/* raw bytes sent */
+    __u32	ppp_ooctects;	/* frame bytes sent */
+    __u32	ppp_opackets;	/* packets sent */
+    __u32	ppp_oerrors;	/* transmit errors */ 
+    __u32	ppp_olqrs;	/* # LQR frames sent */
+};
+
+struct vjstat {
+    __u32	vjs_packets;	/* outbound packets */
+    __u32	vjs_compressed;	/* outbound compressed packets */
+    __u32	vjs_searches;	/* searches for connection state */
+    __u32	vjs_misses;	/* times couldn't find conn. state */
+    __u32	vjs_uncompressedin; /* inbound uncompressed packets */
+    __u32	vjs_compressedin;   /* inbound compressed packets */
+    __u32	vjs_errorin;	/* inbound unknown type packets */
+    __u32	vjs_tossed;	/* inbound packets tossed because of error */
+};
+
+struct compstat {
+    __u32	unc_bytes;	/* total uncompressed bytes */
+    __u32	unc_packets;	/* total uncompressed packets */
+    __u32	comp_bytes;	/* compressed bytes */
+    __u32	comp_packets;	/* compressed packets */
+    __u32	inc_bytes;	/* incompressible bytes */
+    __u32	inc_packets;	/* incompressible packets */
+
+    /* the compression ratio is defined as in_count / bytes_out */
+    __u32       in_count;	/* Bytes received */
+    __u32       bytes_out;	/* Bytes transmitted */
+
+    double	ratio;		/* not computed in kernel. */
+};
+
+struct ppp_stats {
+    struct pppstat	p;	/* basic PPP statistics */
+    struct vjstat	vj;	/* VJ header compression statistics */
+};
+
+struct ppp_comp_stats {
+    struct compstat	c;	/* packet compression statistics */
+    struct compstat	d;	/* packet decompression statistics */
+};
+
+/*
+ * The following structure records the time in seconds since
+ * the last NP packet was sent or received.
+ */
+struct ppp_idle {
+    time_t xmit_idle;		/* time since last NP packet sent */
+    time_t recv_idle;		/* time since last NP packet received */
+};
+
+#ifndef __P
+#ifdef __STDC__
+#define __P(x)	x
+#else
+#define __P(x)	()
+#endif
+#endif
+
+#endif /* _PPP_DEFS_H_ */
diff --git a/mdk-stage1/ppp/include/net/if_ppp.h b/mdk-stage1/ppp/include/net/if_ppp.h
new file mode 100644
index 000000000..1527ecf3f
--- /dev/null
+++ b/mdk-stage1/ppp/include/net/if_ppp.h
@@ -0,0 +1,133 @@
+/*	$Id$	*/
+
+/*
+ * if_ppp.h - Point-to-Point Protocol definitions.
+ *
+ * Copyright (c) 1989 Carnegie Mellon University.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms are permitted
+ * provided that the above copyright notice and this paragraph are
+ * duplicated in all such forms and that any documentation,
+ * advertising materials, and other materials related to such
+ * distribution and use acknowledge that the software was developed
+ * by Carnegie Mellon University.  The name of the
+ * University may not be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
+ * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ */
+
+#ifndef _IF_PPP_H_
+#define _IF_PPP_H_
+
+/*
+ * Bit definitions for flags.
+ */
+#define SC_COMP_PROT	0x00000001	/* protocol compression (output) */
+#define SC_COMP_AC	0x00000002	/* header compression (output) */
+#define	SC_COMP_TCP	0x00000004	/* TCP (VJ) compression (output) */
+#define SC_NO_TCP_CCID	0x00000008	/* disable VJ connection-id comp. */
+#define SC_REJ_COMP_AC	0x00000010	/* reject adrs/ctrl comp. on input */
+#define SC_REJ_COMP_TCP	0x00000020	/* reject TCP (VJ) comp. on input */
+#define SC_CCP_OPEN	0x00000040	/* Look at CCP packets */
+#define SC_CCP_UP	0x00000080	/* May send/recv compressed packets */
+#define SC_DEBUG	0x00010000	/* enable debug messages */
+#define SC_LOG_INPKT	0x00020000	/* log contents of good pkts recvd */
+#define SC_LOG_OUTPKT	0x00040000	/* log contents of pkts sent */
+#define SC_LOG_RAWIN	0x00080000	/* log all chars received */
+#define SC_LOG_FLUSH	0x00100000	/* log all chars flushed */
+#define SC_RCV_B7_0	0x01000000	/* have rcvd char with bit 7 = 0 */
+#define SC_RCV_B7_1	0x02000000	/* have rcvd char with bit 7 = 1 */
+#define SC_RCV_EVNP	0x04000000	/* have rcvd char with even parity */
+#define SC_RCV_ODDP	0x08000000	/* have rcvd char with odd parity */
+#define SC_SYNC		0x00200000	/* use synchronous HDLC framing */
+#define	SC_MASK		0x0fff00ff	/* bits that user can change */
+
+/*
+ * State bits in sc_flags, not changeable by user.
+ */
+#define SC_TIMEOUT	0x00000400	/* timeout is currently pending */
+#define SC_VJ_RESET	0x00000800	/* need to reset VJ decomp */
+#define SC_COMP_RUN	0x00001000	/* compressor has been inited */
+#define SC_DECOMP_RUN	0x00002000	/* decompressor has been inited */
+#define SC_DC_ERROR	0x00004000	/* non-fatal decomp error detected */
+#define SC_DC_FERROR	0x00008000	/* fatal decomp error detected */
+#define SC_TBUSY	0x10000000	/* xmitter doesn't need a packet yet */
+#define SC_PKTLOST	0x20000000	/* have lost or dropped a packet */
+#define	SC_FLUSH	0x40000000	/* flush input until next PPP_FLAG */
+#define	SC_ESCAPED	0x80000000	/* saw a PPP_ESCAPE */
+
+/*
+ * Ioctl definitions.
+ */
+
+struct npioctl {
+    int		protocol;	/* PPP procotol, e.g. PPP_IP */
+    enum NPmode	mode;
+};
+
+/* Structure describing a CCP configuration option, for PPPIOCSCOMPRESS */
+struct ppp_option_data {
+	u_char	*ptr;
+	u_int	length;
+	int	transmit;
+};
+
+struct ifpppstatsreq {
+    char ifr_name[IFNAMSIZ];
+    struct ppp_stats stats;
+};
+
+struct ifpppcstatsreq {
+    char ifr_name[IFNAMSIZ];
+    struct ppp_comp_stats stats;
+};
+
+/*
+ * Ioctl definitions.
+ */
+
+#define	PPPIOCGFLAGS	_IOR('t', 90, int)	/* get configuration flags */
+#define	PPPIOCSFLAGS	_IOW('t', 89, int)	/* set configuration flags */
+#define	PPPIOCGASYNCMAP	_IOR('t', 88, int)	/* get async map */
+#define	PPPIOCSASYNCMAP	_IOW('t', 87, int)	/* set async map */
+#define	PPPIOCGUNIT	_IOR('t', 86, int)	/* get ppp unit number */
+#define	PPPIOCGRASYNCMAP _IOR('t', 85, int)	/* get receive async map */
+#define	PPPIOCSRASYNCMAP _IOW('t', 84, int)	/* set receive async map */
+#define	PPPIOCGMRU	_IOR('t', 83, int)	/* get max receive unit */
+#define	PPPIOCSMRU	_IOW('t', 82, int)	/* set max receive unit */
+#define	PPPIOCSMAXCID	_IOW('t', 81, int)	/* set VJ max slot ID */
+#define PPPIOCGXASYNCMAP _IOR('t', 80, ext_accm) /* get extended ACCM */
+#define PPPIOCSXASYNCMAP _IOW('t', 79, ext_accm) /* set extended ACCM */
+#define PPPIOCXFERUNIT	_IO('t', 78)		/* transfer PPP unit */
+#define PPPIOCSCOMPRESS	_IOW('t', 77, struct ppp_option_data)
+#define PPPIOCGNPMODE	_IOWR('t', 76, struct npioctl) /* get NP mode */
+#define PPPIOCSNPMODE	_IOW('t', 75, struct npioctl)  /* set NP mode */
+#define PPPIOCGIDLE	_IOR('t', 74, struct ppp_idle) /* get idle time */
+#ifdef PPP_FILTER
+#define PPPIOCSPASS	_IOW('t', 71, struct bpf_program) /* set pass filter */
+#define PPPIOCSACTIVE	_IOW('t', 70, struct bpf_program) /* set active filt */
+#endif /* PPP_FILTER */
+
+/* PPPIOC[GS]MTU are alternatives to SIOC[GS]IFMTU, used under Ultrix */
+#define PPPIOCGMTU	_IOR('t', 73, int)	/* get interface MTU */
+#define PPPIOCSMTU	_IOW('t', 72, int)	/* set interface MTU */
+
+/*
+ * These two are interface ioctls so that pppstats can do them on
+ * a socket without having to open the serial device.
+ */
+#define SIOCGPPPSTATS	_IOWR('i', 123, struct ifpppstatsreq)
+#define SIOCGPPPCSTATS	_IOWR('i', 122, struct ifpppcstatsreq)
+
+#if !defined(ifr_mtu)
+#define ifr_mtu	ifr_ifru.ifru_metric
+#endif
+
+#if (defined(_KERNEL) || defined(KERNEL)) && !defined(NeXT)
+void pppattach __P((void));
+void pppintr __P((void));
+#endif
+#endif /* _IF_PPP_H_ */
diff --git a/mdk-stage1/ppp/include/net/ppp-comp.h b/mdk-stage1/ppp/include/net/ppp-comp.h
new file mode 100644
index 000000000..0e6a9c672
--- /dev/null
+++ b/mdk-stage1/ppp/include/net/ppp-comp.h
@@ -0,0 +1,165 @@
+/*
+ * ppp-comp.h - Definitions for doing PPP packet compression.
+ *
+ * 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.
+ *
+ * $Id$
+ */
+
+#ifndef _NET_PPP_COMP_H
+#define _NET_PPP_COMP_H
+
+/*
+ * The following symbols control whether we include code for
+ * various compression methods.
+ */
+#ifndef DO_BSD_COMPRESS
+#define DO_BSD_COMPRESS	1	/* by default, include BSD-Compress */
+#endif
+#ifndef DO_DEFLATE
+#define DO_DEFLATE	1	/* by default, include Deflate */
+#endif
+#define DO_PREDICTOR_1	0
+#define DO_PREDICTOR_2	0
+
+/*
+ * Structure giving methods for compression/decompression.
+ */
+#ifdef PACKETPTR
+struct compressor {
+	int	compress_proto;	/* CCP compression protocol number */
+
+	/* Allocate space for a compressor (transmit side) */
+	void	*(*comp_alloc) __P((u_char *options, int opt_len));
+	/* Free space used by a compressor */
+	void	(*comp_free) __P((void *state));
+	/* Initialize a compressor */
+	int	(*comp_init) __P((void *state, u_char *options, int opt_len,
+				  int unit, int hdrlen, int debug));
+	/* Reset a compressor */
+	void	(*comp_reset) __P((void *state));
+	/* Compress a packet */
+	int	(*compress) __P((void *state, PACKETPTR *mret,
+				 PACKETPTR mp, int orig_len, int max_len));
+	/* Return compression statistics */
+	void	(*comp_stat) __P((void *state, struct compstat *stats));
+
+	/* Allocate space for a decompressor (receive side) */
+	void	*(*decomp_alloc) __P((u_char *options, int opt_len));
+	/* Free space used by a decompressor */
+	void	(*decomp_free) __P((void *state));
+	/* Initialize a decompressor */
+	int	(*decomp_init) __P((void *state, u_char *options, int opt_len,
+				    int unit, int hdrlen, int mru, int debug));
+	/* Reset a decompressor */
+	void	(*decomp_reset) __P((void *state));
+	/* Decompress a packet. */
+	int	(*decompress) __P((void *state, PACKETPTR mp,
+				   PACKETPTR *dmpp));
+	/* Update state for an incompressible packet received */
+	void	(*incomp) __P((void *state, PACKETPTR mp));
+	/* Return decompression statistics */
+	void	(*decomp_stat) __P((void *state, struct compstat *stats));
+};
+#endif /* PACKETPTR */
+
+/*
+ * Return values for decompress routine.
+ * We need to make these distinctions so that we can disable certain
+ * useful functionality, namely sending a CCP reset-request as a result
+ * of an error detected after decompression.  This is to avoid infringing
+ * a patent held by Motorola.
+ * Don't you just lurve software patents.
+ */
+#define DECOMP_OK		0	/* everything went OK */
+#define DECOMP_ERROR		1	/* error detected before decomp. */
+#define DECOMP_FATALERROR	2	/* error detected after decomp. */
+
+/*
+ * CCP codes.
+ */
+#define CCP_CONFREQ	1
+#define CCP_CONFACK	2
+#define CCP_TERMREQ	5
+#define CCP_TERMACK	6
+#define CCP_RESETREQ	14
+#define CCP_RESETACK	15
+
+/*
+ * Max # bytes for a CCP option
+ */
+#define CCP_MAX_OPTION_LENGTH	32
+
+/*
+ * Parts of a CCP packet.
+ */
+#define CCP_CODE(dp)		((dp)[0])
+#define CCP_ID(dp)		((dp)[1])
+#define CCP_LENGTH(dp)		(((dp)[2] << 8) + (dp)[3])
+#define CCP_HDRLEN		4
+
+#define CCP_OPT_CODE(dp)	((dp)[0])
+#define CCP_OPT_LENGTH(dp)	((dp)[1])
+#define CCP_OPT_MINLEN		2
+
+/*
+ * Definitions for BSD-Compress.
+ */
+#define CI_BSD_COMPRESS		21	/* config. option for BSD-Compress */
+#define CILEN_BSD_COMPRESS	3	/* length of config. option */
+
+/* Macros for handling the 3rd byte of the BSD-Compress config option. */
+#define BSD_NBITS(x)		((x) & 0x1F)	/* number of bits requested */
+#define BSD_VERSION(x)		((x) >> 5)	/* version of option format */
+#define BSD_CURRENT_VERSION	1		/* current version number */
+#define BSD_MAKE_OPT(v, n)	(((v) << 5) | (n))
+
+#define BSD_MIN_BITS		9	/* smallest code size supported */
+#define BSD_MAX_BITS		15	/* largest code size supported */
+
+/*
+ * Definitions for Deflate.
+ */
+#define CI_DEFLATE		26	/* config option for Deflate */
+#define CI_DEFLATE_DRAFT	24	/* value used in original draft RFC */
+#define CILEN_DEFLATE		4	/* length of its config option */
+
+#define DEFLATE_MIN_SIZE	8
+#define DEFLATE_MAX_SIZE	15
+#define DEFLATE_METHOD_VAL	8
+#define DEFLATE_SIZE(x)		(((x) >> 4) + DEFLATE_MIN_SIZE)
+#define DEFLATE_METHOD(x)	((x) & 0x0F)
+#define DEFLATE_MAKE_OPT(w)	((((w) - DEFLATE_MIN_SIZE) << 4) \
+				 + DEFLATE_METHOD_VAL)
+#define DEFLATE_CHK_SEQUENCE	0
+
+/*
+ * Definitions for other, as yet unsupported, compression methods.
+ */
+#define CI_PREDICTOR_1		1	/* config option for Predictor-1 */
+#define CILEN_PREDICTOR_1	2	/* length of its config option */
+#define CI_PREDICTOR_2		2	/* config option for Predictor-2 */
+#define CILEN_PREDICTOR_2	2	/* length of its config option */
+
+#endif /* _NET_PPP_COMP_H */
diff --git a/mdk-stage1/ppp/include/net/ppp_defs.h b/mdk-stage1/ppp/include/net/ppp_defs.h
new file mode 100644
index 000000000..c35020eab
--- /dev/null
+++ b/mdk-stage1/ppp/include/net/ppp_defs.h
@@ -0,0 +1,184 @@
+/*	$Id$	*/
+
+/*
+ * ppp_defs.h - PPP definitions.
+ *
+ * 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.
+ */
+
+#ifndef _PPP_DEFS_H_
+#define _PPP_DEFS_H_
+
+/*
+ * The basic PPP frame.
+ */
+#define PPP_HDRLEN	4	/* octets for standard ppp header */
+#define PPP_FCSLEN	2	/* octets for FCS */
+
+/*
+ * Packet sizes
+ *
+ * Note - lcp shouldn't be allowed to negotiate stuff outside these
+ *	  limits.  See lcp.h in the pppd directory.
+ * (XXX - these constants should simply be shared by lcp.c instead
+ *	  of living in lcp.h)
+ */
+#define	PPP_MTU		1500	/* Default MTU (size of Info field) */
+#define PPP_MAXMTU	65535 - (PPP_HDRLEN + PPP_FCSLEN)
+#define PPP_MINMTU	64
+#define PPP_MRU		1500	/* default MRU = max length of info field */
+#define PPP_MAXMRU	65000	/* Largest MRU we allow */
+#define PPP_MINMRU	128
+
+#define PPP_ADDRESS(p)	(((u_char *)(p))[0])
+#define PPP_CONTROL(p)	(((u_char *)(p))[1])
+#define PPP_PROTOCOL(p)	((((u_char *)(p))[2] << 8) + ((u_char *)(p))[3])
+
+/*
+ * Significant octet values.
+ */
+#define	PPP_ALLSTATIONS	0xff	/* All-Stations broadcast address */
+#define	PPP_UI		0x03	/* Unnumbered Information */
+#define	PPP_FLAG	0x7e	/* Flag Sequence */
+#define	PPP_ESCAPE	0x7d	/* Asynchronous Control Escape */
+#define	PPP_TRANS	0x20	/* Asynchronous transparency modifier */
+
+/*
+ * Protocol field values.
+ */
+#define PPP_IP		0x21	/* Internet Protocol */
+#define PPP_AT		0x29	/* AppleTalk Protocol */
+#define PPP_IPX		0x2b	/* IPX protocol */
+#define	PPP_VJC_COMP	0x2d	/* VJ compressed TCP */
+#define	PPP_VJC_UNCOMP	0x2f	/* VJ uncompressed TCP */
+#define PPP_IPV6	0x57	/* Internet Protocol Version 6 */
+#define PPP_COMP	0xfd	/* compressed packet */
+#define PPP_IPCP	0x8021	/* IP Control Protocol */
+#define PPP_ATCP	0x8029	/* AppleTalk Control Protocol */
+#define PPP_IPXCP	0x802b	/* IPX Control Protocol */
+#define PPP_IPV6CP	0x8057	/* IPv6 Control Protocol */
+#define PPP_CCP		0x80fd	/* Compression Control Protocol */
+#define PPP_LCP		0xc021	/* Link Control Protocol */
+#define PPP_PAP		0xc023	/* Password Authentication Protocol */
+#define PPP_LQR		0xc025	/* Link Quality Report protocol */
+#define PPP_CHAP	0xc223	/* Cryptographic Handshake Auth. Protocol */
+#define PPP_CBCP	0xc029	/* Callback Control Protocol */
+
+/*
+ * Values for FCS calculations.
+ */
+#define PPP_INITFCS	0xffff	/* Initial FCS value */
+#define PPP_GOODFCS	0xf0b8	/* Good final FCS value */
+#define PPP_FCS(fcs, c)	(((fcs) >> 8) ^ fcstab[((fcs) ^ (c)) & 0xff])
+
+/*
+ * A 32-bit unsigned integral type.
+ */
+
+#if !defined(__BIT_TYPES_DEFINED__) && !defined(_BITYPES) \
+ && !defined(__FreeBSD__) && (NS_TARGET < 40)
+#ifdef	UINT32_T
+typedef UINT32_T	u_int32_t;
+#else
+typedef unsigned int	u_int32_t;
+typedef unsigned short  u_int16_t;
+#endif
+#endif
+
+/*
+ * Extended asyncmap - allows any character to be escaped.
+ */
+typedef u_int32_t	ext_accm[8];
+
+/*
+ * What to do with network protocol (NP) packets.
+ */
+enum NPmode {
+    NPMODE_PASS,		/* pass the packet through */
+    NPMODE_DROP,		/* silently drop the packet */
+    NPMODE_ERROR,		/* return an error */
+    NPMODE_QUEUE		/* save it up for later. */
+};
+
+/*
+ * Statistics.
+ */
+struct pppstat	{
+    unsigned int ppp_ibytes;	/* bytes received */
+    unsigned int ppp_ipackets;	/* packets received */
+    unsigned int ppp_ierrors;	/* receive errors */
+    unsigned int ppp_obytes;	/* bytes sent */
+    unsigned int ppp_opackets;	/* packets sent */
+    unsigned int ppp_oerrors;	/* transmit errors */
+};
+
+struct vjstat {
+    unsigned int vjs_packets;	/* outbound packets */
+    unsigned int vjs_compressed; /* outbound compressed packets */
+    unsigned int vjs_searches;	/* searches for connection state */
+    unsigned int vjs_misses;	/* times couldn't find conn. state */
+    unsigned int vjs_uncompressedin; /* inbound uncompressed packets */
+    unsigned int vjs_compressedin; /* inbound compressed packets */
+    unsigned int vjs_errorin;	/* inbound unknown type packets */
+    unsigned int vjs_tossed;	/* inbound packets tossed because of error */
+};
+
+struct ppp_stats {
+    struct pppstat p;		/* basic PPP statistics */
+    struct vjstat vj;		/* VJ header compression statistics */
+};
+
+struct compstat {
+    unsigned int unc_bytes;	/* total uncompressed bytes */
+    unsigned int unc_packets;	/* total uncompressed packets */
+    unsigned int comp_bytes;	/* compressed bytes */
+    unsigned int comp_packets;	/* compressed packets */
+    unsigned int inc_bytes;	/* incompressible bytes */
+    unsigned int inc_packets;	/* incompressible packets */
+    unsigned int ratio;		/* recent compression ratio << 8 */
+};
+
+struct ppp_comp_stats {
+    struct compstat c;		/* packet compression statistics */
+    struct compstat d;		/* packet decompression statistics */
+};
+
+/*
+ * The following structure records the time in seconds since
+ * the last NP packet was sent or received.
+ */
+struct ppp_idle {
+    time_t xmit_idle;		/* time since last NP packet sent */
+    time_t recv_idle;		/* time since last NP packet received */
+};
+
+#ifndef __P
+#ifdef __STDC__
+#define __P(x)	x
+#else
+#define __P(x)	()
+#endif
+#endif
+
+#endif /* _PPP_DEFS_H_ */
diff --git a/mdk-stage1/ppp/include/net/pppio.h b/mdk-stage1/ppp/include/net/pppio.h
new file mode 100644
index 000000000..9db1ca9ab
--- /dev/null
+++ b/mdk-stage1/ppp/include/net/pppio.h
@@ -0,0 +1,99 @@
+/*
+ * pppio.h - ioctl and other misc. definitions for STREAMS modules.
+ *
+ * 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.
+ *
+ * $Id$
+ */
+
+#define _PPPIO(n)	(('p' << 8) + (n))
+
+#define PPPIO_NEWPPA	_PPPIO(130)	/* allocate a new PPP unit */
+#define PPPIO_GETSTAT	_PPPIO(131)	/* get PPP statistics */
+#define PPPIO_GETCSTAT	_PPPIO(132)	/* get PPP compression stats */
+#define PPPIO_MTU	_PPPIO(133)	/* set max transmission unit */
+#define PPPIO_MRU	_PPPIO(134)	/* set max receive unit */
+#define PPPIO_CFLAGS	_PPPIO(135)	/* set/clear/get compression flags */
+#define PPPIO_XCOMP	_PPPIO(136)	/* alloc transmit compressor */
+#define PPPIO_RCOMP	_PPPIO(137)	/* alloc receive decompressor */
+#define PPPIO_XACCM	_PPPIO(138)	/* set transmit asyncmap */
+#define PPPIO_RACCM	_PPPIO(139)	/* set receive asyncmap */
+#define PPPIO_VJINIT	_PPPIO(140)	/* initialize VJ comp/decomp */
+#define PPPIO_ATTACH	_PPPIO(141)	/* attach to a ppa (without putmsg) */
+#define PPPIO_LASTMOD	_PPPIO(142)	/* mark last ppp module */
+#define PPPIO_GCLEAN	_PPPIO(143)	/* get 8-bit-clean flags */
+#define PPPIO_DEBUG	_PPPIO(144)	/* request debug information */
+#define PPPIO_BIND	_PPPIO(145)	/* bind to SAP */
+#define PPPIO_NPMODE	_PPPIO(146)	/* set mode for handling data pkts */
+#define PPPIO_GIDLE	_PPPIO(147)	/* get time since last data pkt */
+#define PPPIO_PASSFILT	_PPPIO(148)	/* set filter for packets to pass */
+#define PPPIO_ACTIVEFILT _PPPIO(149)	/* set filter for "link active" pkts */
+
+/*
+ * Values for PPPIO_CFLAGS
+ */
+#define COMP_AC		0x1		/* compress address/control */
+#define DECOMP_AC	0x2		/* decompress address/control */
+#define COMP_PROT	0x4		/* compress PPP protocol */
+#define DECOMP_PROT	0x8		/* decompress PPP protocol */
+
+#define COMP_VJC	0x10		/* compress TCP/IP headers */
+#define COMP_VJCCID	0x20		/* compress connection ID as well */
+#define DECOMP_VJC	0x40		/* decompress TCP/IP headers */
+#define DECOMP_VJCCID	0x80		/* accept compressed connection ID */
+
+#define CCP_ISOPEN	0x100		/* look at CCP packets */
+#define CCP_ISUP	0x200		/* do packet comp/decomp */
+#define CCP_ERROR	0x400		/* (status) error in packet decomp */
+#define CCP_FATALERROR	0x800		/* (status) fatal error ditto */
+#define CCP_COMP_RUN	0x1000		/* (status) seen CCP ack sent */
+#define CCP_DECOMP_RUN	0x2000		/* (status) seen CCP ack rcvd */
+
+/*
+ * Values for 8-bit-clean flags.
+ */
+#define RCV_B7_0	1		/* have rcvd char with bit 7 = 0 */
+#define RCV_B7_1	2		/* have rcvd char with bit 7 = 1 */
+#define RCV_EVNP	4		/* have rcvd char with even parity */
+#define RCV_ODDP	8		/* have rcvd char with odd parity */
+
+/*
+ * Values for the first byte of M_CTL messages passed between
+ * PPP modules.
+ */
+#define PPPCTL_OERROR	0xe0		/* output error [up] */
+#define PPPCTL_IERROR	0xe1		/* input error (e.g. FCS) [up] */
+#define PPPCTL_MTU	0xe2		/* set MTU [down] */
+#define PPPCTL_MRU	0xe3		/* set MRU [down] */
+#define PPPCTL_UNIT	0xe4		/* note PPP unit number [down] */
+
+/*
+ * Values for the integer argument to PPPIO_DEBUG.
+ */
+#define PPPDBG_DUMP	0x10000		/* print out debug info now */
+#define PPPDBG_LOG	0x100		/* log various things */
+#define PPPDBG_DRIVER	0		/* identifies ppp driver as target */
+#define PPPDBG_IF	1		/* identifies ppp network i/f target */
+#define PPPDBG_COMP	2		/* identifies ppp compression target */
+#define PPPDBG_AHDLC	3		/* identifies ppp async hdlc target */
diff --git a/mdk-stage1/ppp/include/net/slcompress.h b/mdk-stage1/ppp/include/net/slcompress.h
new file mode 100644
index 000000000..9e19bc0ed
--- /dev/null
+++ b/mdk-stage1/ppp/include/net/slcompress.h
@@ -0,0 +1,148 @@
+/*
+ * Definitions for tcp compression routines.
+ *
+ * $Id$
+ *
+ * Copyright (c) 1989 Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms are permitted
+ * provided that the above copyright notice and this paragraph are
+ * duplicated in all such forms and that any documentation,
+ * advertising materials, and other materials related to such
+ * distribution and use acknowledge that the software was developed
+ * by the University of California, Berkeley.  The name of the
+ * University may not be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
+ * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ *	Van Jacobson (van@helios.ee.lbl.gov), Dec 31, 1989:
+ *	- Initial distribution.
+ */
+
+#ifndef _SLCOMPRESS_H_
+#define _SLCOMPRESS_H_
+
+#define MAX_STATES 16		/* must be > 2 and < 256 */
+#define MAX_HDR MLEN		/* XXX 4bsd-ism: should really be 128 */
+
+/*
+ * Compressed packet format:
+ *
+ * The first octet contains the packet type (top 3 bits), TCP
+ * 'push' bit, and flags that indicate which of the 4 TCP sequence
+ * numbers have changed (bottom 5 bits).  The next octet is a
+ * conversation number that associates a saved IP/TCP header with
+ * the compressed packet.  The next two octets are the TCP checksum
+ * from the original datagram.  The next 0 to 15 octets are
+ * sequence number changes, one change per bit set in the header
+ * (there may be no changes and there are two special cases where
+ * the receiver implicitly knows what changed -- see below).
+ * 
+ * There are 5 numbers which can change (they are always inserted
+ * in the following order): TCP urgent pointer, window,
+ * acknowlegement, sequence number and IP ID.  (The urgent pointer
+ * is different from the others in that its value is sent, not the
+ * change in value.)  Since typical use of SLIP links is biased
+ * toward small packets (see comments on MTU/MSS below), changes
+ * use a variable length coding with one octet for numbers in the
+ * range 1 - 255 and 3 octets (0, MSB, LSB) for numbers in the
+ * range 256 - 65535 or 0.  (If the change in sequence number or
+ * ack is more than 65535, an uncompressed packet is sent.)
+ */
+
+/*
+ * Packet types (must not conflict with IP protocol version)
+ *
+ * The top nibble of the first octet is the packet type.  There are
+ * three possible types: IP (not proto TCP or tcp with one of the
+ * control flags set); uncompressed TCP (a normal IP/TCP packet but
+ * with the 8-bit protocol field replaced by an 8-bit connection id --
+ * this type of packet syncs the sender & receiver); and compressed
+ * TCP (described above).
+ *
+ * LSB of 4-bit field is TCP "PUSH" bit (a worthless anachronism) and
+ * is logically part of the 4-bit "changes" field that follows.  Top
+ * three bits are actual packet type.  For backward compatibility
+ * and in the interest of conserving bits, numbers are chosen so the
+ * IP protocol version number (4) which normally appears in this nibble
+ * means "IP packet".
+ */
+
+/* packet types */
+#define TYPE_IP 0x40
+#define TYPE_UNCOMPRESSED_TCP 0x70
+#define TYPE_COMPRESSED_TCP 0x80
+#define TYPE_ERROR 0x00
+
+/* Bits in first octet of compressed packet */
+#define NEW_C	0x40	/* flag bits for what changed in a packet */
+#define NEW_I	0x20
+#define NEW_S	0x08
+#define NEW_A	0x04
+#define NEW_W	0x02
+#define NEW_U	0x01
+
+/* reserved, special-case values of above */
+#define SPECIAL_I (NEW_S|NEW_W|NEW_U)		/* echoed interactive traffic */
+#define SPECIAL_D (NEW_S|NEW_A|NEW_W|NEW_U)	/* unidirectional data */
+#define SPECIALS_MASK (NEW_S|NEW_A|NEW_W|NEW_U)
+
+#define TCP_PUSH_BIT 0x10
+
+
+/*
+ * "state" data for each active tcp conversation on the wire.  This is
+ * basically a copy of the entire IP/TCP header from the last packet
+ * we saw from the conversation together with a small identifier
+ * the transmit & receive ends of the line use to locate saved header.
+ */
+struct cstate {
+	struct cstate *cs_next;	/* next most recently used cstate (xmit only) */
+	u_short cs_hlen;	/* size of hdr (receive only) */
+	u_char cs_id;		/* connection # associated with this state */
+	u_char cs_filler;
+	union {
+		char csu_hdr[MAX_HDR];
+		struct ip csu_ip;	/* ip/tcp hdr from most recent packet */
+	} slcs_u;
+};
+#define cs_ip slcs_u.csu_ip
+#define cs_hdr slcs_u.csu_hdr
+
+/*
+ * all the state data for one serial line (we need one of these
+ * per line).
+ */
+struct slcompress {
+	struct cstate *last_cs;	/* most recently used tstate */
+	u_char last_recv;	/* last rcvd conn. id */
+	u_char last_xmit;	/* last sent conn. id */
+	u_short flags;
+#ifndef SL_NO_STATS
+	int sls_packets;	/* outbound packets */
+	int sls_compressed;	/* outbound compressed packets */
+	int sls_searches;	/* searches for connection state */
+	int sls_misses;		/* times couldn't find conn. state */
+	int sls_uncompressedin;	/* inbound uncompressed packets */
+	int sls_compressedin;	/* inbound compressed packets */
+	int sls_errorin;	/* inbound unknown type packets */
+	int sls_tossed;		/* inbound packets tossed because of error */
+#endif
+	struct cstate tstate[MAX_STATES];	/* xmit connection states */
+	struct cstate rstate[MAX_STATES];	/* receive connection states */
+};
+/* flag values */
+#define SLF_TOSS 1		/* tossing rcvd frames because of input err */
+
+void	sl_compress_init __P((struct slcompress *));
+void	sl_compress_setup __P((struct slcompress *, int));
+u_int	sl_compress_tcp __P((struct mbuf *,
+	    struct ip *, struct slcompress *, int));
+int	sl_uncompress_tcp __P((u_char **, int, u_int, struct slcompress *));
+int	sl_uncompress_tcp_core __P((u_char *, int, int, u_int,
+	    struct slcompress *, u_char **, u_int *));
+
+#endif /* _SLCOMPRESS_H_ */
diff --git a/mdk-stage1/ppp/include/net/vjcompress.h b/mdk-stage1/ppp/include/net/vjcompress.h
new file mode 100644
index 000000000..c64596926
--- /dev/null
+++ b/mdk-stage1/ppp/include/net/vjcompress.h
@@ -0,0 +1,144 @@
+/*
+ * Definitions for tcp compression routines.
+ *
+ * $Id$
+ *
+ * Copyright (c) 1989 Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms are permitted
+ * provided that the above copyright notice and this paragraph are
+ * duplicated in all such forms and that any documentation,
+ * advertising materials, and other materials related to such
+ * distribution and use acknowledge that the software was developed
+ * by the University of California, Berkeley.  The name of the
+ * University may not be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
+ * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ *	Van Jacobson (van@helios.ee.lbl.gov), Dec 31, 1989:
+ *	- Initial distribution.
+ */
+
+#ifndef _VJCOMPRESS_H_
+#define _VJCOMPRESS_H_
+
+#define MAX_STATES 16		/* must be > 2 and < 256 */
+#define MAX_HDR	   128
+
+/*
+ * Compressed packet format:
+ *
+ * The first octet contains the packet type (top 3 bits), TCP
+ * 'push' bit, and flags that indicate which of the 4 TCP sequence
+ * numbers have changed (bottom 5 bits).  The next octet is a
+ * conversation number that associates a saved IP/TCP header with
+ * the compressed packet.  The next two octets are the TCP checksum
+ * from the original datagram.  The next 0 to 15 octets are
+ * sequence number changes, one change per bit set in the header
+ * (there may be no changes and there are two special cases where
+ * the receiver implicitly knows what changed -- see below).
+ * 
+ * There are 5 numbers which can change (they are always inserted
+ * in the following order): TCP urgent pointer, window,
+ * acknowlegement, sequence number and IP ID.  (The urgent pointer
+ * is different from the others in that its value is sent, not the
+ * change in value.)  Since typical use of SLIP links is biased
+ * toward small packets (see comments on MTU/MSS below), changes
+ * use a variable length coding with one octet for numbers in the
+ * range 1 - 255 and 3 octets (0, MSB, LSB) for numbers in the
+ * range 256 - 65535 or 0.  (If the change in sequence number or
+ * ack is more than 65535, an uncompressed packet is sent.)
+ */
+
+/*
+ * Packet types (must not conflict with IP protocol version)
+ *
+ * The top nibble of the first octet is the packet type.  There are
+ * three possible types: IP (not proto TCP or tcp with one of the
+ * control flags set); uncompressed TCP (a normal IP/TCP packet but
+ * with the 8-bit protocol field replaced by an 8-bit connection id --
+ * this type of packet syncs the sender & receiver); and compressed
+ * TCP (described above).
+ *
+ * LSB of 4-bit field is TCP "PUSH" bit (a worthless anachronism) and
+ * is logically part of the 4-bit "changes" field that follows.  Top
+ * three bits are actual packet type.  For backward compatibility
+ * and in the interest of conserving bits, numbers are chosen so the
+ * IP protocol version number (4) which normally appears in this nibble
+ * means "IP packet".
+ */
+
+/* packet types */
+#define TYPE_IP 0x40
+#define TYPE_UNCOMPRESSED_TCP 0x70
+#define TYPE_COMPRESSED_TCP 0x80
+#define TYPE_ERROR 0x00
+
+/* Bits in first octet of compressed packet */
+#define NEW_C	0x40	/* flag bits for what changed in a packet */
+#define NEW_I	0x20
+#define NEW_S	0x08
+#define NEW_A	0x04
+#define NEW_W	0x02
+#define NEW_U	0x01
+
+/* reserved, special-case values of above */
+#define SPECIAL_I (NEW_S|NEW_W|NEW_U)		/* echoed interactive traffic */
+#define SPECIAL_D (NEW_S|NEW_A|NEW_W|NEW_U)	/* unidirectional data */
+#define SPECIALS_MASK (NEW_S|NEW_A|NEW_W|NEW_U)
+
+#define TCP_PUSH_BIT 0x10
+
+
+/*
+ * "state" data for each active tcp conversation on the wire.  This is
+ * basically a copy of the entire IP/TCP header from the last packet
+ * we saw from the conversation together with a small identifier
+ * the transmit & receive ends of the line use to locate saved header.
+ */
+struct cstate {
+    struct cstate *cs_next;	/* next most recently used state (xmit only) */
+    u_short cs_hlen;		/* size of hdr (receive only) */
+    u_char cs_id;		/* connection # associated with this state */
+    u_char cs_filler;
+    union {
+	char csu_hdr[MAX_HDR];
+	struct ip csu_ip;	/* ip/tcp hdr from most recent packet */
+    } vjcs_u;
+};
+#define cs_ip vjcs_u.csu_ip
+#define cs_hdr vjcs_u.csu_hdr
+
+/*
+ * all the state data for one serial line (we need one of these per line).
+ */
+struct vjcompress {
+    struct cstate *last_cs;	/* most recently used tstate */
+    u_char last_recv;		/* last rcvd conn. id */
+    u_char last_xmit;		/* last sent conn. id */
+    u_short flags;
+#ifndef VJ_NO_STATS
+    struct vjstat stats;
+#endif
+    struct cstate tstate[MAX_STATES];	/* xmit connection states */
+    struct cstate rstate[MAX_STATES];	/* receive connection states */
+};
+
+/* flag values */
+#define VJF_TOSS 1		/* tossing rcvd frames because of input err */
+
+extern void  vj_compress_init __P((struct vjcompress *comp, int max_state));
+extern u_int vj_compress_tcp __P((struct ip *ip, u_int mlen,
+				struct vjcompress *comp, int compress_cid_flag,
+				u_char **vjhdrp));
+extern void  vj_uncompress_err __P((struct vjcompress *comp));
+extern int   vj_uncompress_uncomp __P((u_char *buf, int buflen,
+				struct vjcompress *comp));
+extern int   vj_uncompress_tcp __P((u_char *buf, int buflen, int total_len,
+				struct vjcompress *comp, u_char **hdrp,
+				u_int *hlenp));
+
+#endif /* _VJCOMPRESS_H_ */
diff --git a/mdk-stage1/ppp/include/pcap-int.h b/mdk-stage1/ppp/include/pcap-int.h
new file mode 100644
index 000000000..323994929
--- /dev/null
+++ b/mdk-stage1/ppp/include/pcap-int.h
@@ -0,0 +1,117 @@
+/*
+ * Copyright (c) 1994, 1995, 1996
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the Computer Systems
+ *	Engineering Group at Lawrence Berkeley Laboratory.
+ * 4. Neither the name of the University nor of the Laboratory may be used
+ *    to endorse or promote products derived from this software without
+ *    specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#) $Header$ (LBL)
+ */
+
+#ifndef pcap_int_h
+#define pcap_int_h
+
+#include <pcap.h>
+
+/*
+ * Savefile
+ */
+struct pcap_sf {
+	FILE *rfile;
+	int swapped;
+	int version_major;
+	int version_minor;
+	u_char *base;
+};
+
+struct pcap_md {
+	struct pcap_stat stat;
+	/*XXX*/
+	int use_bpf;
+	u_long	TotPkts;	/* can't oflow for 79 hrs on ether */
+	u_long	TotAccepted;	/* count accepted by filter */
+	u_long	TotDrops;	/* count of dropped packets */
+	long	TotMissed;	/* missed by i/f during this run */
+	long	OrigMissed;	/* missed by i/f before this run */
+#ifdef linux
+	int pad;
+	int skip;
+	char *device;
+#endif
+};
+
+struct pcap {
+	int fd;
+	int snapshot;
+	int linktype;
+	int tzoff;		/* timezone offset */
+	int offset;		/* offset for proper alignment */
+
+	struct pcap_sf sf;
+	struct pcap_md md;
+
+	/*
+	 * Read buffer.
+	 */
+	int bufsize;
+	u_char *buffer;
+	u_char *bp;
+	int cc;
+
+	/*
+	 * Place holder for pcap_next().
+	 */
+	u_char *pkt;
+
+	
+	/*
+	 * Placeholder for filter code if bpf not in kernel.
+	 */
+	struct bpf_program fcode;
+
+	char errbuf[PCAP_ERRBUF_SIZE];
+};
+
+int	yylex(void);
+
+#ifndef min
+#define min(a, b) ((a) > (b) ? (b) : (a))
+#endif
+
+/* XXX should these be in pcap.h? */
+int	pcap_offline_read(pcap_t *, int, pcap_handler, u_char *);
+int	pcap_read(pcap_t *, int cnt, pcap_handler, u_char *);
+
+/* Ultrix pads to make everything line up on a nice boundary */
+#if defined(ultrix) || defined(__alpha)
+#define       PCAP_FDDIPAD 3
+#endif
+
+/* XXX */
+extern	int pcap_fddipad;
+#endif