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![Matt Domsch](/assets/img/avatar_default.png)
From: Matt Domsch <Matt_Domsch@dell.com> The patch below implements the Microsoft Point-to-Point Encryption method as a PPP compressor/decompressor. This is necessary for Linux clients and servers to interoperate with Microsoft Point-to-Point Tunneling Protocol (PPTP) servers (either Microsoft PPTP servers or the poptop project) which use MPPE to encrypt data when creating a VPN. This patch differs from the kernel_ppp_mppe DKMS pacakge at pptpclient.sourceforge.net by utilizing the kernel crypto routines rather than providing its own SHA1 and arcfour implementations. Minor changes to ppp_generic.c try to prevent a link from disabling compression (in our case, the encryption) after it has started using compression (encryption). Feedback to <pptpclient-devel@lists.sourceforge.net> please. Signed-off-by: Matt Domsch <Matt_Domsch@dell.com> Cc: James Cameron <james.cameron@hp.com> Cc: "David S. Miller" <davem@davemloft.net> Signed-off-by: Brice Goglin <Brice.Goglin@ens-lyon.org> Acked-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: David S. Miller <davem@davemloft.net>
158 lines
6.4 KiB
C
158 lines
6.4 KiB
C
/* $Id: if_ppp.h,v 1.21 2000/03/27 06:03:36 paulus Exp $ */
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/*
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* if_ppp.h - Point-to-Point Protocol definitions.
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*
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* Copyright (c) 1989 Carnegie Mellon University.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms are permitted
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* provided that the above copyright notice and this paragraph are
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* duplicated in all such forms and that any documentation,
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* advertising materials, and other materials related to such
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* distribution and use acknowledge that the software was developed
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* by Carnegie Mellon University. The name of the
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* University may not be used to endorse or promote products derived
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* from this software without specific prior written permission.
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
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* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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*
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*/
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/*
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* ==FILEVERSION 20050812==
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*
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* NOTE TO MAINTAINERS:
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* If you modify this file at all, please set the above date.
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* if_ppp.h is shipped with a PPP distribution as well as with the kernel;
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* if everyone increases the FILEVERSION number above, then scripts
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* can do the right thing when deciding whether to install a new if_ppp.h
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* file. Don't change the format of that line otherwise, so the
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* installation script can recognize it.
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*/
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#ifndef _IF_PPP_H_
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#define _IF_PPP_H_
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#include <linux/compiler.h>
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/*
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* Packet sizes
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*/
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#define PPP_MTU 1500 /* Default MTU (size of Info field) */
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#define PPP_MAXMRU 65000 /* Largest MRU we allow */
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#define PROTO_IPX 0x002b /* protocol numbers */
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#define PROTO_DNA_RT 0x0027 /* DNA Routing */
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/*
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* Bit definitions for flags.
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*/
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#define SC_COMP_PROT 0x00000001 /* protocol compression (output) */
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#define SC_COMP_AC 0x00000002 /* header compression (output) */
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#define SC_COMP_TCP 0x00000004 /* TCP (VJ) compression (output) */
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#define SC_NO_TCP_CCID 0x00000008 /* disable VJ connection-id comp. */
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#define SC_REJ_COMP_AC 0x00000010 /* reject adrs/ctrl comp. on input */
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#define SC_REJ_COMP_TCP 0x00000020 /* reject TCP (VJ) comp. on input */
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#define SC_CCP_OPEN 0x00000040 /* Look at CCP packets */
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#define SC_CCP_UP 0x00000080 /* May send/recv compressed packets */
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#define SC_ENABLE_IP 0x00000100 /* IP packets may be exchanged */
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#define SC_LOOP_TRAFFIC 0x00000200 /* send traffic to pppd */
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#define SC_MULTILINK 0x00000400 /* do multilink encapsulation */
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#define SC_MP_SHORTSEQ 0x00000800 /* use short MP sequence numbers */
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#define SC_COMP_RUN 0x00001000 /* compressor has been inited */
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#define SC_DECOMP_RUN 0x00002000 /* decompressor has been inited */
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#define SC_MP_XSHORTSEQ 0x00004000 /* transmit short MP seq numbers */
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#define SC_DEBUG 0x00010000 /* enable debug messages */
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#define SC_LOG_INPKT 0x00020000 /* log contents of good pkts recvd */
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#define SC_LOG_OUTPKT 0x00040000 /* log contents of pkts sent */
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#define SC_LOG_RAWIN 0x00080000 /* log all chars received */
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#define SC_LOG_FLUSH 0x00100000 /* log all chars flushed */
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#define SC_SYNC 0x00200000 /* synchronous serial mode */
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#define SC_MUST_COMP 0x00400000 /* no uncompressed packets may be sent or received */
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#define SC_MASK 0x0f600fff /* bits that user can change */
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/* state bits */
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#define SC_XMIT_BUSY 0x10000000 /* (used by isdn_ppp?) */
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#define SC_RCV_ODDP 0x08000000 /* have rcvd char with odd parity */
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#define SC_RCV_EVNP 0x04000000 /* have rcvd char with even parity */
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#define SC_RCV_B7_1 0x02000000 /* have rcvd char with bit 7 = 1 */
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#define SC_RCV_B7_0 0x01000000 /* have rcvd char with bit 7 = 0 */
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#define SC_DC_FERROR 0x00800000 /* fatal decomp error detected */
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#define SC_DC_ERROR 0x00400000 /* non-fatal decomp error detected */
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/*
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* Ioctl definitions.
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*/
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struct npioctl {
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int protocol; /* PPP protocol, e.g. PPP_IP */
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enum NPmode mode;
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};
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/* Structure describing a CCP configuration option, for PPPIOCSCOMPRESS */
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struct ppp_option_data {
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__u8 __user *ptr;
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__u32 length;
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int transmit;
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};
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struct ifpppstatsreq {
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struct ifreq b;
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struct ppp_stats stats; /* statistic information */
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};
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struct ifpppcstatsreq {
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struct ifreq b;
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struct ppp_comp_stats stats;
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};
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#define ifr__name b.ifr_ifrn.ifrn_name
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#define stats_ptr b.ifr_ifru.ifru_data
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/*
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* Ioctl definitions.
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*/
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#define PPPIOCGFLAGS _IOR('t', 90, int) /* get configuration flags */
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#define PPPIOCSFLAGS _IOW('t', 89, int) /* set configuration flags */
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#define PPPIOCGASYNCMAP _IOR('t', 88, int) /* get async map */
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#define PPPIOCSASYNCMAP _IOW('t', 87, int) /* set async map */
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#define PPPIOCGUNIT _IOR('t', 86, int) /* get ppp unit number */
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#define PPPIOCGRASYNCMAP _IOR('t', 85, int) /* get receive async map */
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#define PPPIOCSRASYNCMAP _IOW('t', 84, int) /* set receive async map */
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#define PPPIOCGMRU _IOR('t', 83, int) /* get max receive unit */
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#define PPPIOCSMRU _IOW('t', 82, int) /* set max receive unit */
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#define PPPIOCSMAXCID _IOW('t', 81, int) /* set VJ max slot ID */
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#define PPPIOCGXASYNCMAP _IOR('t', 80, ext_accm) /* get extended ACCM */
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#define PPPIOCSXASYNCMAP _IOW('t', 79, ext_accm) /* set extended ACCM */
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#define PPPIOCXFERUNIT _IO('t', 78) /* transfer PPP unit */
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#define PPPIOCSCOMPRESS _IOW('t', 77, struct ppp_option_data)
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#define PPPIOCGNPMODE _IOWR('t', 76, struct npioctl) /* get NP mode */
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#define PPPIOCSNPMODE _IOW('t', 75, struct npioctl) /* set NP mode */
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#define PPPIOCSPASS _IOW('t', 71, struct sock_fprog) /* set pass filter */
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#define PPPIOCSACTIVE _IOW('t', 70, struct sock_fprog) /* set active filt */
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#define PPPIOCGDEBUG _IOR('t', 65, int) /* Read debug level */
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#define PPPIOCSDEBUG _IOW('t', 64, int) /* Set debug level */
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#define PPPIOCGIDLE _IOR('t', 63, struct ppp_idle) /* get idle time */
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#define PPPIOCNEWUNIT _IOWR('t', 62, int) /* create new ppp unit */
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#define PPPIOCATTACH _IOW('t', 61, int) /* attach to ppp unit */
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#define PPPIOCDETACH _IOW('t', 60, int) /* detach from ppp unit/chan */
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#define PPPIOCSMRRU _IOW('t', 59, int) /* set multilink MRU */
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#define PPPIOCCONNECT _IOW('t', 58, int) /* connect channel to unit */
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#define PPPIOCDISCONN _IO('t', 57) /* disconnect channel */
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#define PPPIOCATTCHAN _IOW('t', 56, int) /* attach to ppp channel */
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#define PPPIOCGCHAN _IOR('t', 55, int) /* get ppp channel number */
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#define SIOCGPPPSTATS (SIOCDEVPRIVATE + 0)
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#define SIOCGPPPVER (SIOCDEVPRIVATE + 1) /* NEVER change this!! */
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#define SIOCGPPPCSTATS (SIOCDEVPRIVATE + 2)
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#if !defined(ifr_mtu)
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#define ifr_mtu ifr_ifru.ifru_metric
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#endif
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#endif /* _IF_PPP_H_ */
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