linux 2.0.x kernels have broken header files. It is silly to be so

tightly coupled to kernel headers (since the 2.2 ones work with 2.0
as well), so I'm checking in include/net.

Makefile

@@ -43,7 +43,7 @@ halfclean:
 	@rm -f libc.a
 
 headers: dummy
-	@rm -f include/asm include/net include/linux include/bits
+	@rm -f include/asm include/linux include/bits
 	@ln -s $(KERNEL_SOURCE)/include/asm include/asm
 	@if [ ! -f include/asm/unistd.h ] ; then \
 	    echo " "; \
@@ -59,7 +59,6 @@ headers: dummy
 	    echo " "; \
 	    sleep 10; \
 	fi;
-	@ln -s $(KERNEL_SOURCE)/include/net include/net
 	@ln -s $(KERNEL_SOURCE)/include/linux include/linux
 	@ln -s ../sysdeps/linux/$(TARGET_ARCH)/bits include/bits
 
@@ -67,8 +66,8 @@ tags:
 	ctags -R
 
 clean: subdirs_clean
-	rm -f libc.a
-	rm -f include/asm include/net include/linux include/bits
+	rm -f libc.a libcrt0.o
+	rm -f include/asm include/linux include/bits
 
 subdirs: $(patsubst %, _dir_%, $(DIRS))
 subdirs_clean: $(patsubst %, _dirclean_%, $(DIRS) test)
@@ -83,9 +82,7 @@ $(patsubst %, _dirclean_%, $(DIRS) test) : dummy
 install: libc.a
 	rm -f $(INSTALL_DIR)/include/asm
 	rm -f $(INSTALL_DIR)/include/linux
-	rm -f $(INSTALL_DIR)/include/net
 	ln -s $(KERNEL_SOURCE)/include/asm $(INSTALL_DIR)/include/asm
-	ln -s $(KERNEL_SOURCE)/include/net $(INSTALL_DIR)/include/net
 	ln -s $(KERNEL_SOURCE)/include/linux $(INSTALL_DIR)/include/linux
 	mkdir -p $(INSTALL_DIR)/include/bits
 	find include/ -type f -depth -print | cpio -pdmu $(INSTALL_DIR)

include/net/ethernet.h

@@ -0,0 +1,76 @@
+/* Copyright (C) 1997, 1999 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+/* Based on the FreeBSD version of this file. Curiously, that file
+   lacks a copyright in the header. */
+
+#ifndef __NET_ETHERNET_H
+#define __NET_ETHERNET_H 1
+
+#include <sys/cdefs.h>
+#include <sys/types.h>
+#include <linux/if_ether.h>     /* IEEE 802.3 Ethernet constants */
+
+__BEGIN_DECLS
+
+/* This is a name for the 48 bit ethernet address available on many
+   systems.  */
+struct ether_addr
+{
+  u_int8_t ether_addr_octet[ETH_ALEN];
+} __attribute__ ((__packed__));
+
+/* 10Mb/s ethernet header */
+struct ether_header
+{
+  u_int8_t  ether_dhost[ETH_ALEN];	/* destination eth addr	*/
+  u_int8_t  ether_shost[ETH_ALEN];	/* source ether addr	*/
+  u_int16_t ether_type;		        /* packet type ID field	*/
+} __attribute__ ((__packed__));
+
+/* Ethernet protocol ID's */
+#define	ETHERTYPE_PUP		0x0200          /* Xerox PUP */
+#define	ETHERTYPE_IP		0x0800		/* IP */
+#define	ETHERTYPE_ARP		0x0806		/* Address resolution */
+#define	ETHERTYPE_REVARP	0x8035		/* Reverse ARP */
+
+#define	ETHER_ADDR_LEN	ETH_ALEN                 /* size of ethernet addr */
+#define	ETHER_TYPE_LEN	2                        /* bytes in type field */
+#define	ETHER_CRC_LEN	4                        /* bytes in CRC field */
+#define	ETHER_HDR_LEN	ETH_HLEN                 /* total octets in header */
+#define	ETHER_MIN_LEN	(ETH_ZLEN + ETH_CRC_LEN) /* min packet length */
+#define	ETHER_MAX_LEN	(ETH_FRAME_LEN + ETH_CRC_LEN) /* max packet length */
+
+/* make sure ethenet length is valid */
+#define	ETHER_IS_VALID_LEN(foo)	\
+	((foo) >= ETHER_MIN_LEN && (foo) <= ETHER_MAX_LEN)
+
+/*
+ * The ETHERTYPE_NTRAILER packet types starting at ETHERTYPE_TRAIL have
+ * (type-ETHERTYPE_TRAIL)*512 bytes of data followed
+ * by an ETHER type (as given above) and then the (variable-length) header.
+ */
+#define	ETHERTYPE_TRAIL		0x1000		/* Trailer packet */
+#define	ETHERTYPE_NTRAILER	16
+
+#define	ETHERMTU	ETH_DATA_LEN
+#define	ETHERMIN	(ETHER_MIN_LEN-ETHER_HDR_LEN-ETHER_CRC_LEN)
+
+__END_DECLS
+
+#endif /* net/ethernet.h */

include/net/if.h

@@ -0,0 +1,191 @@
+/* Copyright (C) 1997, 1998 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#ifndef _NET_IF_H
+
+#define _NET_IF_H	1
+#include <features.h>
+
+#include <sys/types.h>
+#include <sys/socket.h>
+
+/* Standard interface flags. */
+enum
+  {
+    IFF_UP = 0x1,		/* Interface is up.  */
+#define IFF_UP	IFF_UP
+    IFF_BROADCAST = 0x2,	/* Broadcast address valid.  */
+#define IFF_BROADCAST	IFF_BROADCAST
+    IFF_DEBUG = 0x4,		/* Turn on debugging.  */
+#define IFF_DEBUG	IFF_DEBUG
+    IFF_LOOPBACK = 0x8,		/* Is a loopback net.  */
+#define IFF_LOOPBACK	IFF_LOOPBACK
+    IFF_POINTOPOINT = 0x10,	/* Interface is point-to-point link.  */
+#define IFF_POINTOPOINT	IFF_POINTOPOINT
+    IFF_NOTRAILERS = 0x20,	/* Avoid use of trailers.  */
+#define IFF_NOTRAILERS	IFF_NOTRAILERS
+    IFF_RUNNING = 0x40,		/* Resources allocated.  */
+#define IFF_RUNNING	IFF_RUNNING
+    IFF_NOARP = 0x80,		/* No address resolution protocol.  */
+#define IFF_NOARP	IFF_NOARP
+    IFF_PROMISC = 0x100,	/* Receive all packets.  */
+#define IFF_PROMISC	IFF_PROMISC
+
+    /* Not supported */
+    IFF_ALLMULTI = 0x200,	/* Receive all multicast packets.  */
+#define IFF_ALLMULTI	IFF_ALLMULTI
+
+    IFF_MASTER = 0x400,		/* Master of a load balancer.  */
+#define IFF_MASTER	IFF_MASTER
+    IFF_SLAVE = 0x800,		/* Slave of a load balancer.  */
+#define IFF_SLAVE	IFF_SLAVE
+
+    IFF_MULTICAST = 0x1000,	/* Supports multicast.  */
+#define IFF_MULTICAST	IFF_MULTICAST
+
+    IFF_PORTSEL = 0x2000,	/* Can set media type.  */
+#define IFF_PORTSEL	IFF_PORTSEL
+    IFF_AUTOMEDIA = 0x4000	/* Auto media select active.  */
+#define IFF_AUTOMEDIA	IFF_AUTOMEDIA
+  };
+
+/* The ifaddr structure contains information about one address of an
+   interface.  They are maintained by the different address families,
+   are allocated and attached when an address is set, and are linked
+   together so all addresses for an interface can be located.  */
+
+struct ifaddr
+  {
+    struct sockaddr ifa_addr;	/* Address of interface.  */
+    union
+      {
+	struct sockaddr	ifu_broadaddr;
+	struct sockaddr	ifu_dstaddr;
+      } ifa_ifu;
+    struct iface *ifa_ifp;	/* Back-pointer to interface.  */
+    struct ifaddr *ifa_next;	/* Next address for interface.  */
+  };
+
+#define	ifa_broadaddr	ifa_ifu.ifu_broadaddr	/* broadcast address	*/
+#define	ifa_dstaddr	ifa_ifu.ifu_dstaddr	/* other end of link	*/
+
+/* Device mapping structure. I'd just gone off and designed a
+   beautiful scheme using only loadable modules with arguments for
+   driver options and along come the PCMCIA people 8)
+
+   Ah well. The get() side of this is good for WDSETUP, and it'll be
+   handy for debugging things. The set side is fine for now and being
+   very small might be worth keeping for clean configuration.  */
+
+struct ifmap
+  {
+    unsigned long int mem_start;
+    unsigned long int mem_end;
+    unsigned short int base_addr;
+    unsigned char irq;
+    unsigned char dma;
+    unsigned char port;
+    /* 3 bytes spare */
+  };
+
+/* Interface request structure used for socket ioctl's.  All interface
+   ioctl's must have parameter definitions which begin with ifr_name.
+   The remainder may be interface specific.  */
+
+struct ifreq
+  {
+#define IFHWADDRLEN	6
+#define	IFNAMSIZ	16
+    union
+      {
+	char ifrn_name[IFNAMSIZ];	/* Interface name, e.g. "en0".  */
+      } ifr_ifrn;
+
+    union
+      {
+	struct sockaddr ifru_addr;
+	struct sockaddr ifru_dstaddr;
+	struct sockaddr ifru_broadaddr;
+	struct sockaddr ifru_netmask;
+	struct sockaddr ifru_hwaddr;
+	short int ifru_flags;
+	int ifru_ivalue;
+	int ifru_mtu;
+	struct ifmap ifru_map;
+	char ifru_slave[IFNAMSIZ];	/* Just fits the size */
+	__caddr_t ifru_data;
+      } ifr_ifru;
+  };
+
+#define ifr_name	ifr_ifrn.ifrn_name	/* interface name 	*/
+#define ifr_hwaddr	ifr_ifru.ifru_hwaddr	/* MAC address 		*/
+#define	ifr_addr	ifr_ifru.ifru_addr	/* address		*/
+#define	ifr_dstaddr	ifr_ifru.ifru_dstaddr	/* other end of p-p lnk	*/
+#define	ifr_broadaddr	ifr_ifru.ifru_broadaddr	/* broadcast address	*/
+#define	ifr_netmask	ifr_ifru.ifru_netmask	/* interface net mask	*/
+#define	ifr_flags	ifr_ifru.ifru_flags	/* flags		*/
+#define	ifr_metric	ifr_ifru.ifru_ivalue	/* metric		*/
+#define	ifr_mtu		ifr_ifru.ifru_mtu	/* mtu			*/
+#define ifr_map		ifr_ifru.ifru_map	/* device map		*/
+#define ifr_slave	ifr_ifru.ifru_slave	/* slave device		*/
+#define	ifr_data	ifr_ifru.ifru_data	/* for use by interface	*/
+#define ifr_ifindex	ifr_ifru.ifru_ivalue    /* interface index      */
+#define ifr_bandwidth	ifr_ifru.ifru_ivalue	/* link bandwidth	*/
+#define ifr_qlen	ifr_ifru.ifru_ivalue	/* queue length		*/
+
+
+/* Structure used in SIOCGIFCONF request.  Used to retrieve interface
+   configuration for machine (useful for programs which must know all
+   networks accessible).  */
+
+struct ifconf
+  {
+    int	ifc_len;			/* Size of buffer.  */
+    union
+      {
+	__caddr_t ifcu_buf;
+	struct ifreq *ifcu_req;
+      } ifc_ifcu;
+  };
+#define	ifc_buf	ifc_ifcu.ifcu_buf	/* Buffer address.  */
+#define	ifc_req	ifc_ifcu.ifcu_req	/* Array of structures.  */
+
+__BEGIN_DECLS
+
+/* Convert an interface name to an index, and vice versa.  */
+
+extern unsigned int if_nametoindex __P ((__const char *__ifname));
+extern char *if_indextoname __P ((unsigned int __ifindex, char *__ifname));
+
+/* Return a list of all interfaces and their indices.  */
+
+struct if_nameindex
+  {
+    unsigned int if_index;	/* 1, 2, ... */
+    char *if_name;		/* null terminated name: "eth0", ... */
+  };
+
+extern struct if_nameindex *if_nameindex __P ((void));
+
+/* Free the data returned from if_nameindex.  */
+
+extern void if_freenameindex __P ((struct if_nameindex *__ptr));
+
+__END_DECLS
+
+#endif /* net/if.h */

include/net/if_arp.h

@@ -0,0 +1,170 @@
+/* Definitions for Address Resolution Protocol.
+   Copyright (C) 1997, 1999 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+/* Based on the 4.4BSD and Linux version of this file.  */
+
+#ifndef _NET_IF_ARP_H
+
+#define _NET_IF_ARP_H 1
+#include <sys/cdefs.h>
+
+#include <sys/types.h>
+#include <sys/socket.h>
+
+__BEGIN_DECLS
+
+/* Some internals from deep down in the kernel.  */
+#define MAX_ADDR_LEN	7
+
+
+/* This structure defines an ethernet arp header.  */
+
+/* ARP protocol opcodes. */
+#define	ARPOP_REQUEST	1		/* ARP request.  */
+#define	ARPOP_REPLY	2		/* ARP reply.  */
+#define	ARPOP_RREQUEST	3		/* RARP request.  */
+#define	ARPOP_RREPLY	4		/* RARP reply.  */
+#define	ARPOP_InREQUEST	8		/* InARP request.  */
+#define	ARPOP_InREPLY	9		/* InARP reply.  */
+#define	ARPOP_NAK	10		/* (ATM)ARP NAK.  */
+
+/* See RFC 826 for protocol description.  ARP packets are variable
+   in size; the arphdr structure defines the fixed-length portion.
+   Protocol type values are the same as those for 10 Mb/s Ethernet.
+   It is followed by the variable-sized fields ar_sha, arp_spa,
+   arp_tha and arp_tpa in that order, according to the lengths
+   specified.  Field names used correspond to RFC 826.  */
+
+struct arphdr
+  {
+    unsigned short int ar_hrd;		/* Format of hardware address.  */
+    unsigned short int ar_pro;		/* Format of protocol address.  */
+    unsigned char ar_hln;		/* Length of hardware address.  */
+    unsigned char ar_pln;		/* Length of protocol address.  */
+    unsigned short int ar_op;		/* ARP opcode (command).  */
+#if 0
+    /* Ethernet looks like this : This bit is variable sized
+       however...  */
+    unsigned char __ar_sha[ETH_ALEN];	/* Sender hardware address.  */
+    unsigned char __ar_sip[4];		/* Sender IP address.  */
+    unsigned char __ar_tha[ETH_ALEN];	/* Target hardware address.  */
+    unsigned char __ar_tip[4];		/* Target IP address.  */
+#endif
+  };
+
+
+/* ARP protocol HARDWARE identifiers. */
+#define ARPHRD_NETROM	0		/* From KA9Q: NET/ROM pseudo. */
+#define ARPHRD_ETHER 	1		/* Ethernet 10/100Mbps.  */
+#define	ARPHRD_EETHER	2		/* Experimental Ethernet.  */
+#define	ARPHRD_AX25	3		/* AX.25 Level 2.  */
+#define	ARPHRD_PRONET	4		/* PROnet token ring.  */
+#define	ARPHRD_CHAOS	5		/* Chaosnet.  */
+#define	ARPHRD_IEEE802	6		/* IEEE 802.2 Ethernet/TR/TB.  */
+#define	ARPHRD_ARCNET	7		/* ARCnet.  */
+#define	ARPHRD_APPLETLK	8		/* APPLEtalk.  */
+#define	ARPHRD_DLCI	15		/* Frame Relay DLCI.  */
+#define	ARPHRD_ATM	19		/* ATM.  */
+#define	ARPHRD_METRICOM	23		/* Metricom STRIP (new IANA id).  */
+
+/* Dummy types for non ARP hardware */
+#define ARPHRD_SLIP	256
+#define ARPHRD_CSLIP	257
+#define ARPHRD_SLIP6	258
+#define ARPHRD_CSLIP6	259
+#define ARPHRD_RSRVD	260		/* Notional KISS type.  */
+#define ARPHRD_ADAPT	264
+#define ARPHRD_ROSE	270
+#define ARPHRD_X25	271		/* CCITT X.25.  */
+#define ARPHRD_PPP	512
+#define ARPHRD_HDLC	513		/* (Cisco) HDLC.  */
+#define ARPHRD_LAPB	516		/* LAPB.  */
+#define ARPHRD_DDCMP	517		/* Digital's DDCMP.  */
+
+#define ARPHRD_TUNNEL	768		/* IPIP tunnel.  */
+#define ARPHRD_TUNNEL6	769		/* IPIP6 tunnel.  */
+#define ARPHRD_FRAD	770             /* Frame Relay Access Device.  */
+#define ARPHRD_SKIP	771		/* SKIP vif.  */
+#define ARPHRD_LOOPBACK	772		/* Loopback device.  */
+#define ARPHRD_LOCALTLK 773		/* Localtalk device.  */
+#define ARPHRD_FDDI	774		/* Fiber Distributed Data Interface. */
+#define ARPHRD_BIF	775             /* AP1000 BIF.  */
+#define ARPHRD_SIT	776		/* sit0 device - IPv6-in-IPv4.  */
+#define ARPHRD_IPDDP	777		/* IP-in-DDP tunnel.  */
+#define ARPHRD_IPGRE	778		/* GRE over IP.  */
+#define ARPHRD_PIMREG	779		/* PIMSM register interface.  */
+#define ARPHRD_HIPPI	780		/* High Performance Parallel I'face. */
+#define ARPHRD_ASH	781		/* (Nexus Electronics) Ash.  */
+#define ARPHRD_ECONET	782		/* Acorn Econet.  */
+#define ARPHRD_IRDA	783		/* Linux/IR.  */
+#define ARPHRD_FCPP	784		/* Point to point fibrechanel.  */
+#define ARPHRD_FCAL	785		/* Fibrechanel arbitrated loop.  */
+#define ARPHRD_FCPL	786		/* Fibrechanel public loop.  */
+#define ARPHRD_FCPFABRIC 787		/* Fibrechanel fabric.  */
+#define ARPHRD_IEEE802_TR 800		/* Magic type ident for TR.  */
+
+
+/* ARP ioctl request.  */
+struct arpreq
+  {
+    struct sockaddr arp_pa;		/* Protocol address.  */
+    struct sockaddr arp_ha;		/* Hardware address.  */
+    int arp_flags;			/* Flags.  */
+    struct sockaddr arp_netmask;	/* Netmask (only for proxy arps).  */
+    char arp_dev[16];
+  };
+
+struct arpreq_old
+  {
+    struct sockaddr arp_pa;		/* Protocol address.  */
+    struct sockaddr arp_ha;		/* Hardware address.  */
+    int arp_flags;			/* Flags.  */
+    struct sockaddr arp_netmask;	/* Netmask (only for proxy arps).  */
+  };
+
+/* ARP Flag values.  */
+#define ATF_COM		0x02		/* Completed entry (ha valid).  */
+#define	ATF_PERM	0x04		/* Permanent entry.  */
+#define	ATF_PUBL	0x08		/* Publish entry.  */
+#define	ATF_USETRAILERS	0x10		/* Has requested trailers.  */
+#define ATF_NETMASK     0x20            /* Want to use a netmask (only
+					   for proxy entries).  */
+#define ATF_DONTPUB	0x40		/* Don't answer this addresses.  */
+#define ATF_MAGIC	0x80		/* Automatically added entry.  */
+
+
+/* Support for the user space arp daemon, arpd.  */
+#define ARPD_UPDATE	0x01
+#define ARPD_LOOKUP	0x02
+#define ARPD_FLUSH	0x03
+
+struct arpd_request
+  {
+    unsigned short int req;		/* Request type.  */
+    u_int32_t ip;			/* IP address of entry.  */
+    unsigned long int dev;		/* Device entry is tied to.  */
+    unsigned long int stamp;
+    unsigned long int updated;
+    unsigned char ha[MAX_ADDR_LEN];	/* Hardware address.  */
+  };
+
+__END_DECLS
+
+#endif	/* net/if_arp.h */

include/net/if_packet.h

@@ -0,0 +1,37 @@
+/* Definitions for use with Linux SOCK_PACKET sockets.
+   Copyright (C) 1997, 1998 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#ifndef __IF_PACKET_H
+#define __IF_PACKET_H
+
+#include <features.h>
+#include <bits/sockaddr.h>
+
+/* This is the SOCK_PACKET address structure as used in Linux 2.0.
+   From Linux 2.1 the AF_PACKET interface is preferred and you should
+   consider using it in place of this one.  */
+
+struct sockaddr_pkt
+  {
+    __SOCKADDR_COMMON (spkt_);
+    unsigned char spkt_device[14];
+    unsigned short spkt_protocol;
+  };
+
+#endif

include/net/if_ppp.h

@@ -0,0 +1,157 @@
+/*	From: if_ppp.h,v 1.3 1995/06/12 11:36:50 paulus Exp */
+
+/*
+ * 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 960926==
+ *
+ *  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 __NET_IF_PPP_H
+#define __NET_IF_PPP_H 1
+
+#include <sys/types.h>
+#include <sys/cdefs.h>
+
+#include <net/if.h>
+#include <sys/ioctl.h>
+#include <net/ppp_defs.h>
+
+__BEGIN_DECLS
+
+/*
+ * Packet sizes
+ */
+
+#define	PPP_MTU		1500	/* Default MTU (size of Info field) */
+#define PPP_MAXMRU	65000	/* Largest MRU we allow */
+#define PPP_VERSION	"2.2.0"
+#define PPP_MAGIC	0x5002	/* Magic value for the ppp structure */
+#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_COMP_RUN	0x00001000	/* compressor has been inited */
+#define SC_DECOMP_RUN	0x00002000	/* decompressor has been inited */
+#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_MASK		0x0fE0ffff	/* bits that user can change */
+
+/* state bits */
+#define	SC_ESCAPED	0x80000000	/* saw a PPP_ESCAPE */
+#define	SC_FLUSH	0x40000000	/* flush input until next PPP_FLAG */
+#define SC_VJ_RESET	0x20000000	/* Need to reset the VJ decompressor */
+#define SC_XMIT_BUSY	0x10000000	/* ppp_write_wakeup is active */
+#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 {
+	u_int8_t  *ptr;
+	u_int32_t 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 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 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
+
+__END_DECLS
+
+#endif /* net/if_ppp.h */

include/net/if_shaper.h

@@ -0,0 +1,59 @@
+/* Copyright (C) 1998 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#ifndef _NET_IF_SHAPER_H
+#define _NET_IF_SHAPER_H 1
+
+#include <features.h>
+#include <sys/types.h>
+#include <net/if.h>
+#include <sys/ioctl.h>
+
+__BEGIN_DECLS
+
+#define SHAPER_QLEN	10
+/*
+ *	This is a bit speed dependant (read it shouldnt be a constant!)
+ *
+ *	5 is about right for 28.8 upwards. Below that double for every
+ *	halving of speed or so. - ie about 20 for 9600 baud.
+ */
+#define SHAPER_LATENCY	(5 * HZ)
+#define SHAPER_MAXSLIP	2
+#define SHAPER_BURST	(HZ / 50)	/* Good for >128K then */
+
+#define SHAPER_SET_DEV		0x0001
+#define SHAPER_SET_SPEED	0x0002
+#define SHAPER_GET_DEV		0x0003
+#define SHAPER_GET_SPEED	0x0004
+
+struct shaperconf
+{
+  u_int16_t ss_cmd;
+  union
+  {
+    char ssu_name[14];
+    u_int32_t ssu_speed;
+  } ss_u;
+#define ss_speed ss_u.ssu_speed
+#define ss_name ss_u.ssu_name
+};
+
+__END_DECLS
+
+#endif /* net/if_shaper.h */

include/net/if_slip.h

@@ -0,0 +1,25 @@
+/* Copyright (C) 1997 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#ifndef _NET_IF_SLIP_H
+#define _NET_IF_SLIP_H 1
+
+/* We can use the kernel header.  */
+#include <linux/if_slip.h>
+
+#endif	/* net/if_slip.h.  */

include/net/ppp-comp.h

@@ -0,0 +1 @@
+#include <linux/ppp-comp.h>

include/net/ppp_defs.h

@@ -0,0 +1,10 @@
+#ifndef _NET_PPP_DEFS_H
+#define _NET_PPP_DEFS_H 1
+
+#define __need_time_t
+#include <time.h>
+
+#include <asm/types.h>
+#include <linux/ppp_defs.h>
+
+#endif /* net/ppp_defs.h */

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: pppio.h,v 1.1 2001/01/16 10:03:48 andersen Exp $
+ */
+
+#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 */

include/net/route.h

@@ -0,0 +1,140 @@
+/* Copyright (C) 1997 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+/* Based on the 4.4BSD and Linux version of this file.  */
+
+#ifndef _NET_ROUTE_H
+#define _NET_ROUTE_H	1
+
+#include <features.h>
+#include <sys/socket.h>
+#include <sys/types.h>
+#include <netinet/in.h>
+
+
+/* This structure gets passed by the SIOCADDRT and SIOCDELRT calls. */
+struct rtentry
+  {
+    unsigned long int rt_pad1;
+    struct sockaddr rt_dst;		/* Target address.  */
+    struct sockaddr rt_gateway;		/* Gateway addr (RTF_GATEWAY).  */
+    struct sockaddr rt_genmask;		/* Target network mask (IP).  */
+    unsigned short int rt_flags;
+    short int rt_pad2;
+    unsigned long int rt_pad3;
+    unsigned char rt_tos;
+    unsigned char rt_class;
+    short int rt_pad4;
+    short int rt_metric;		/* +1 for binary compatibility!  */
+    char *rt_dev;			/* Forcing the device at add.  */
+    unsigned long int rt_mtu;		/* Per route MTU/Window.  */
+    unsigned long int rt_window;	/* Window clamping.  */
+    unsigned short int rt_irtt;		/* Initial RTT.  */
+  };
+/* Compatibility hack.  */
+#define rt_mss	rt_mtu
+
+
+struct in6_rtmsg
+  {
+    struct in6_addr rtmsg_dst;
+    struct in6_addr rtmsg_src;
+    struct in6_addr rtmsg_gateway;
+    u_int32_t rtmsg_type;
+    u_int16_t rtmsg_dst_len;
+    u_int16_t rtmsg_src_len;
+    u_int32_t rtmsg_metric;
+    unsigned long int rtmsg_info;
+    u_int32_t rtmsg_flags;
+    int rtmsg_ifindex;
+  };
+
+
+#define	RTF_UP		0x0001		/* Route usable.  */
+#define	RTF_GATEWAY	0x0002		/* Destination is a gateway.  */
+
+#define	RTF_HOST	0x0004		/* Host entry (net otherwise).  */
+#define RTF_REINSTATE	0x0008		/* Reinstate route after timeout.  */
+#define	RTF_DYNAMIC	0x0010		/* Created dyn. (by redirect).  */
+#define	RTF_MODIFIED	0x0020		/* Modified dyn. (by redirect).  */
+#define RTF_MTU		0x0040		/* Specific MTU for this route.  */
+#define RTF_MSS		RTF_MTU		/* Compatibility.  */
+#define RTF_WINDOW	0x0080		/* Per route window clamping.  */
+#define RTF_IRTT	0x0100		/* Initial round trip time.  */
+#define RTF_REJECT	0x0200		/* Reject route.  */
+#define	RTF_STATIC	0x0400		/* Manually injected route.  */
+#define	RTF_XRESOLVE	0x0800		/* External resolver.  */
+#define RTF_NOFORWARD   0x1000		/* Forwarding inhibited.  */
+#define RTF_THROW	0x2000		/* Go to next class.  */
+#define RTF_NOPMTUDISC  0x4000		/* Do not send packets with DF.  */
+
+/* for IPv6 */
+#define RTF_DEFAULT	0x00010000	/* default - learned via ND	*/
+#define RTF_ALLONLINK	0x00020000	/* fallback, no routers on link	*/
+#define RTF_ADDRCONF	0x00040000	/* addrconf route - RA		*/
+
+#define RTF_LINKRT	0x00100000	/* link specific - device match	*/
+#define RTF_NONEXTHOP	0x00200000	/* route with no nexthop	*/
+
+#define RTF_CACHE	0x01000000	/* cache entry			*/
+#define RTF_FLOW	0x02000000	/* flow significant route	*/
+#define RTF_POLICY	0x04000000	/* policy route			*/
+
+#define RTCF_VALVE	0x00200000
+#define RTCF_MASQ	0x00400000
+#define RTCF_NAT	0x00800000
+#define RTCF_DOREDIRECT 0x01000000
+#define RTCF_LOG	0x02000000
+#define RTCF_DIRECTSRC	0x04000000
+
+#define RTF_LOCAL	0x80000000
+#define RTF_INTERFACE	0x40000000
+#define RTF_MULTICAST	0x20000000
+#define RTF_BROADCAST	0x10000000
+#define RTF_NAT		0x08000000
+
+#define RTF_ADDRCLASSMASK	0xF8000000
+#define RT_ADDRCLASS(flags)	((__u_int32_t) flags >> 23)
+
+#define RT_TOS(tos)		((tos) & IPTOS_TOS_MASK)
+
+#define RT_LOCALADDR(flags)	((flags & RTF_ADDRCLASSMASK) \
+				 == (RTF_LOCAL|RTF_INTERFACE))
+
+#define RT_CLASS_UNSPEC		0
+#define RT_CLASS_DEFAULT	253
+
+#define RT_CLASS_MAIN		254
+#define RT_CLASS_LOCAL		255
+#define RT_CLASS_MAX		255
+
+
+#define RTMSG_ACK		NLMSG_ACK
+#define RTMSG_OVERRUN		NLMSG_OVERRUN
+
+#define RTMSG_NEWDEVICE		0x11
+#define RTMSG_DELDEVICE		0x12
+#define RTMSG_NEWROUTE		0x21
+#define RTMSG_DELROUTE		0x22
+#define RTMSG_NEWRULE		0x31
+#define RTMSG_DELRULE		0x32
+#define RTMSG_CONTROL		0x40
+
+#define RTMSG_AR_FAILED		0x51	/* Address Resolution failed.  */
+
+#endif /* net/route.h */

include/net/slcompress.h

@@ -0,0 +1,148 @@
+/*
+ * Definitions for tcp compression routines.
+ *
+ * $Id: slcompress.h,v 1.1 2001/01/16 10:03:48 andersen Exp $
+ *
+ * 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_ */

include/net/vjcompress.h

@@ -0,0 +1,144 @@
+/*
+ * Definitions for tcp compression routines.
+ *
+ * $Id: vjcompress.h,v 1.1 2001/01/16 10:03:48 andersen Exp $
+ *
+ * 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_ */