mirror of
https://git.savannah.nongnu.org/git/lwip.git
synced 2026-08-08 08:33:39 +08:00
Early development stage of an attempt to port PPPd 2.4.5 to lwIP.
PPPoE works, PPPoS code is not ported at all. I am using the RP-PPPoE server to do my tests using the following configuration: $ cat /etc/ppp/pppoe-server-options debug login lcp-echo-interval 10 lcp-echo-failure 10 ms-dns 192.168.4.130 ms-dns 192.168.4.231 netmask 255.255.255.0 defaultroute noipdefault usepeerdns $ cat /etc/ppp/allip 192.168.4.1-200 $ pppoe-server -C isp -L 192.168.4.254 -p /etc/ppp/allip -I tap0 Plus the usual auth-lines in /etc/ppp/pap-secrets and /etc/ppp/chap-secrets . And the unix port minimal "echo" project slightly modified to use the "tcpip" API, so with threads, which I am going to commit with NO_SYS as a -Dmacro. It still use some of the linux'ism, such as syslog() and crypt(), I do not want to drop the syslog() supports at the moment, this is pretty useful to debug, and we may just convert the way the syslog() is done to provide a trace feature to our PPP users, as a compile-time option.
This commit is contained in:
Sylvain Rochet
156
src/netif/ppp/net/if_ppp.h
Normal file
156
src/netif/ppp/net/if_ppp.h
Normal file
@@ -0,0 +1,156 @@
|
||||
/* $Id: if_ppp.h,v 1.19 2002/12/06 09:49:15 paulus Exp $ */
|
||||
|
||||
/*
|
||||
* if_ppp.h - Point-to-Point Protocol definitions.
|
||||
*
|
||||
* Copyright (c) 1984-2000 Carnegie Mellon University. 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. The name "Carnegie Mellon University" must not be used to
|
||||
* endorse or promote products derived from this software without
|
||||
* prior written permission. For permission or any legal
|
||||
* details, please contact
|
||||
* Office of Technology Transfer
|
||||
* Carnegie Mellon University
|
||||
* 5000 Forbes Avenue
|
||||
* Pittsburgh, PA 15213-3890
|
||||
* (412) 268-4387, fax: (412) 268-7395
|
||||
* tech-transfer@andrew.cmu.edu
|
||||
*
|
||||
* 4. Redistributions of any form whatsoever must retain the following
|
||||
* acknowledgment:
|
||||
* "This product includes software developed by Computing Services
|
||||
* at Carnegie Mellon University (http://www.cmu.edu/computing/)."
|
||||
*
|
||||
* CARNEGIE MELLON UNIVERSITY DISCLAIMS ALL WARRANTIES WITH REGARD TO
|
||||
* THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
|
||||
* AND FITNESS, IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY BE LIABLE
|
||||
* FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
||||
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
|
||||
* AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
|
||||
* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
||||
*/
|
||||
|
||||
#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_ */
|
||||
179
src/netif/ppp/net/ppp-comp.h
Normal file
179
src/netif/ppp/net/ppp-comp.h
Normal file
@@ -0,0 +1,179 @@
|
||||
/*
|
||||
* ppp-comp.h - Definitions for doing PPP packet compression.
|
||||
*
|
||||
* Copyright (c) 1984 Paul Mackerras. 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. The name(s) of the authors of this software must not be used to
|
||||
* endorse or promote products derived from this software without
|
||||
* prior written permission.
|
||||
*
|
||||
* 4. Redistributions of any form whatsoever must retain the following
|
||||
* acknowledgment:
|
||||
* "This product includes software developed by Paul Mackerras
|
||||
* <paulus@samba.org>".
|
||||
*
|
||||
* THE AUTHORS OF THIS SOFTWARE DISCLAIM ALL WARRANTIES WITH REGARD TO
|
||||
* THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
|
||||
* AND FITNESS, IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY
|
||||
* SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
||||
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
|
||||
* AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
|
||||
* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
||||
*
|
||||
* $Id: ppp-comp.h,v 1.13 2002/12/06 09:49:15 paulus Exp $
|
||||
*/
|
||||
|
||||
#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 MPPE.
|
||||
*/
|
||||
#define CI_MPPE 18 /* config option for MPPE */
|
||||
#define CILEN_MPPE 6 /* length of config option */
|
||||
|
||||
/*
|
||||
* 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 */
|
||||
197
src/netif/ppp/net/ppp_defs.h
Normal file
197
src/netif/ppp/net/ppp_defs.h
Normal file
@@ -0,0 +1,197 @@
|
||||
/* $Id: ppp_defs.h,v 1.17 2002/12/06 09:49:15 paulus Exp $ */
|
||||
|
||||
/*
|
||||
* ppp_defs.h - PPP definitions.
|
||||
*
|
||||
* Copyright (c) 1984 Paul Mackerras. 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. The name(s) of the authors of this software must not be used to
|
||||
* endorse or promote products derived from this software without
|
||||
* prior written permission.
|
||||
*
|
||||
* 4. Redistributions of any form whatsoever must retain the following
|
||||
* acknowledgment:
|
||||
* "This product includes software developed by Paul Mackerras
|
||||
* <paulus@samba.org>".
|
||||
*
|
||||
* THE AUTHORS OF THIS SOFTWARE DISCLAIM ALL WARRANTIES WITH REGARD TO
|
||||
* THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
|
||||
* AND FITNESS, IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY
|
||||
* SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
||||
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
|
||||
* AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
|
||||
* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
||||
*/
|
||||
|
||||
#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)
|
||||
*/
|
||||
#if 0 /* defined in opt.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
|
||||
#endif
|
||||
|
||||
#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_ECP 0x8053 /* Encryption 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 */
|
||||
#define PPP_EAP 0xc227 /* Extensible Authentication 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_ */
|
||||
107
src/netif/ppp/net/pppio.h
Normal file
107
src/netif/ppp/net/pppio.h
Normal file
@@ -0,0 +1,107 @@
|
||||
/*
|
||||
* pppio.h - ioctl and other misc. definitions for STREAMS modules.
|
||||
*
|
||||
* Copyright (c) 1994 Paul Mackerras. 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. The name(s) of the authors of this software must not be used to
|
||||
* endorse or promote products derived from this software without
|
||||
* prior written permission.
|
||||
*
|
||||
* 4. Redistributions of any form whatsoever must retain the following
|
||||
* acknowledgment:
|
||||
* "This product includes software developed by Paul Mackerras
|
||||
* <paulus@samba.org>".
|
||||
*
|
||||
* THE AUTHORS OF THIS SOFTWARE DISCLAIM ALL WARRANTIES WITH REGARD TO
|
||||
* THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
|
||||
* AND FITNESS, IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY
|
||||
* SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
||||
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
|
||||
* AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
|
||||
* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
||||
*
|
||||
* $Id: pppio.h,v 1.9 2002/12/06 09:49:15 paulus 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 */
|
||||
148
src/netif/ppp/net/slcompress.h
Normal file
148
src/netif/ppp/net/slcompress.h
Normal file
@@ -0,0 +1,148 @@
|
||||
/*
|
||||
* Definitions for tcp compression routines.
|
||||
*
|
||||
* $Id: slcompress.h,v 1.4 1994/09/21 06:50:08 paulus 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_ */
|
||||
144
src/netif/ppp/net/vjcompress.h
Normal file
144
src/netif/ppp/net/vjcompress.h
Normal file
@@ -0,0 +1,144 @@
|
||||
/*
|
||||
* Definitions for tcp compression routines.
|
||||
*
|
||||
* $Id: vjcompress.h,v 1.3 1996/05/28 00:55:33 paulus 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_ */
|
||||
Reference in New Issue
Block a user