-#ifndef _LINUX_PPP_H
-#define _LINUX_PPP_H
-
-/* definitions for kernel PPP module
- Michael Callahan <callahan@maths.ox.ac.uk>
- Nov. 4 1993 */
-
-/* $Id: ppp.h,v 1.3 1994/05/27 00:59:24 paulus Exp $ */
-
-/* how many PPP units? */
-#define PPP_NRUNIT 4
-
-#define PPP_VERSION "0.2.7"
-
-/* line discipline number */
-#define N_PPP 3
-
-/* Extended asyncmap - allows any character to be escaped. */
-typedef u_long ext_accm[8];
-
-/* Magic value for the ppp structure */
-#define PPP_MAGIC 0x5002
-
-#define PPPIOCGFLAGS 0x5490 /* get configuration flags */
-#define PPPIOCSFLAGS 0x5491 /* set configuration flags */
-#define PPPIOCGASYNCMAP 0x5492 /* get async map */
-#define PPPIOCSASYNCMAP 0x5493 /* set async map */
-#define PPPIOCGUNIT 0x5494 /* get ppp unit number */
-#define PPPIOCSINPSIG 0x5495 /* set input ready signal */
-#define PPPIOCSDEBUG 0x5497 /* set debug level */
-#define PPPIOCGDEBUG 0x5498 /* get debug level */
-#define PPPIOCGSTAT 0x5499 /* read PPP statistic information */
-#define PPPIOCGTIME 0x549A /* read time delta information */
-#define PPPIOCGXASYNCMAP 0x549B /* get async table */
-#define PPPIOCSXASYNCMAP 0x549C /* set async table */
-#define PPPIOCSMRU 0x549D /* set receive unit size for PPP */
-#define PPPIOCRASYNCMAP 0x549E /* set receive async map */
-#define PPPIOCSMAXCID 0x549F /* set the maximum compression slot id */
-
-/* special characters in the framing protocol */
-#define PPP_ALLSTATIONS 0xff /* All-Stations broadcast address */
-#define PPP_UI 0x03 /* Unnumbered Information */
-#define PPP_FLAG 0x7E /* frame delimiter -- marks frame boundaries */
-#define PPP_ADDRESS 0xFF /* first character of frame <-- (may be */
-#define PPP_CONTROL 0x03 /* second character of frame <-- compressed)*/
-#define PPP_TRANS 0x20 /* Asynchronous transparency modifier */
-#define PPP_ESC 0x7d /* escape charecter -- next character is
- data, and the PPP_TRANS bit should be
- toggled. PPP_ESC PPP_FLAG is illegal */
-
-/* protocol numbers */
-#define PROTO_IP 0x0021
-#define PROTO_VJCOMP 0x002d
-#define PROTO_VJUNCOMP 0x002f
-
-/* FCS support */
-#define PPP_FCS_INIT 0xffff
-#define PPP_FCS_GOOD 0xf0b8
-
-/* initial MTU */
-#define PPP_MTU 1500
-
-/* initial MRU */
-#define PPP_MRU PPP_MTU
-
-/* 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_ENABLE_IP 0x00000100 /* IP packets may be exchanged */
-#define SC_IP_DOWN 0x00000200 /* give ip frames to pppd */
-#define SC_IP_FLUSH 0x00000400 /* "next time" flag for IP_DOWN */
-#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 */
-
-/* Flag bits to determine state of input characters */
-#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 = 0 */
-#define SC_RCV_EVNP 0x04000000 /* have rcvd char with even parity */
-#define SC_RCV_ODDP 0x08000000 /* have rcvd char with odd parity */
-
-#define SC_MASK 0x0fffffff /* bits that user can change */
-
-/* flag for doing transmitter lockout */
-#define SC_XMIT_BUSY 0x10000000 /* ppp_write_wakeup is active */
-
-/*
- * This is the format of the data buffer of a LQP packet. The packet data
- * is sent/received to the peer.
- */
-
-struct ppp_lqp_packet_hdr {
- unsigned long LastOutLQRs; /* Copied from PeerOutLQRs */
- unsigned long LastOutPackets; /* Copied from PeerOutPackets */
- unsigned long LastOutOctets; /* Copied from PeerOutOctets */
- unsigned long PeerInLQRs; /* Copied from SavedInLQRs */
- unsigned long PeerInPackets; /* Copied from SavedInPackets */
- unsigned long PeerInDiscards; /* Copied from SavedInDiscards */
- unsigned long PeerInErrors; /* Copied from SavedInErrors */
- unsigned long PeerInOctets; /* Copeid from SavedInOctets */
- unsigned long PeerOutLQRs; /* Copied from OutLQRs, plus 1 */
- unsigned long PeerOutPackets; /* Current ifOutUniPackets, + 1 */
- unsigned long PeerOutOctets; /* Current ifOutOctets + LQR */
- };
-
-/*
- * This data is not sent to the remote. It is updated by the driver when
- * a packet is received.
- */
-
-struct ppp_lqp_packet_trailer {
- unsigned long SaveInLQRs; /* Current InLQRs on receiption */
- unsigned long SaveInPackets; /* Current ifInUniPackets */
- unsigned long SaveInDiscards; /* Current ifInDiscards */
- unsigned long SaveInErrors; /* Current ifInErrors */
- unsigned long SaveInOctets; /* Current ifInOctects */
-};
-
-/*
- * PPP LQP packet. The packet is changed by the driver immediately prior
- * to transmission and updated upon receiption with the current values.
- * So, it must be known to the driver as well as the pppd software.
- */
-
-struct ppp_lpq_packet {
- unsigned long magic; /* current magic value */
- struct ppp_lqp_packet_hdr hdr; /* Header fields for structure */
- struct ppp_lqp_packet_trailer tail; /* Trailer fields (not sent) */
-};
-
-/*
- * PPP interface statistics. (used by LQP / pppstats)
- */
-
-struct ppp_stats {
- unsigned long rbytes; /* bytes received */
- unsigned long rcomp; /* compressed packets received */
- unsigned long runcomp; /* uncompressed packets received */
- unsigned long rothers; /* non-ip frames received */
- unsigned long rerrors; /* received errors */
- unsigned long roverrun; /* "buffer overrun" counter */
- unsigned long tossed; /* packets discarded */
- unsigned long runts; /* frames too short to process */
- unsigned long rgiants; /* frames too large to process */
- unsigned long sbytes; /* bytes sent */
- unsigned long scomp; /* compressed packets sent */
- unsigned long suncomp; /* uncompressed packets sent */
- unsigned long sothers; /* non-ip frames sent */
- unsigned long serrors; /* transmitter errors */
- unsigned long sbusy; /* "transmitter busy" counter */
-};
-
-/*
- * Demand dial fields
- */
-
-struct ppp_ddinfo {
- unsigned long ip_sjiffies; /* time when last IP frame sent */
- unsigned long ip_rjiffies; /* time when last IP frame recvd*/
- unsigned long nip_sjiffies; /* time when last NON-IP sent */
- unsigned long nip_rjiffies; /* time when last NON-IP recvd */
-};
-
-#ifdef __KERNEL__
-
-struct ppp {
- int magic; /* magic value for structure */
-
- /* Bitmapped flag fields. */
- char inuse; /* are we allocated? */
- char sending; /* "channel busy" indicator */
- char escape; /* 0x20 if prev char was PPP_ESC*/
- char toss; /* toss this frame */
-
- unsigned int flags; /* miscellany */
-
- ext_accm xmit_async_map; /* 1 bit means that given control
- character is quoted on output*/
-
- unsigned long recv_async_map; /* 1 bit means that given control
- character is ignored on input*/
- int mtu; /* maximum xmit frame size */
- int mru; /* maximum receive frame size */
- unsigned short fcs; /* FCS field of current frame */
-
- /* Various fields. */
- int line; /* PPP channel number */
- struct tty_struct *tty; /* ptr to TTY structure */
- struct device *dev; /* easy for intr handling */
- struct slcompress *slcomp; /* for header compression */
- unsigned long last_xmit; /* time of last transmission */
-
- /* These are pointers to the malloc()ed frame buffers.
- These buffers are used while processing a packet. If a packet
- has to hang around for the user process to read it, it lingers in
- the user buffers below. */
- unsigned char *rbuff; /* receiver buffer */
- unsigned char *xbuff; /* transmitter buffer */
- unsigned char *cbuff; /* compression buffer */
-
- /* These are the various pointers into the buffers. */
- unsigned char *rhead; /* RECV buffer pointer (head) */
- unsigned char *rend; /* RECV buffer pointer (end) */
- int rcount; /* PPP receive counter */
- unsigned char *xhead; /* XMIT buffer pointer (head) */
- unsigned char *xtail; /* XMIT buffer pointer (end) */
-
- /* Structures for interfacing with the user process. */
-#define RBUFSIZE 4000
- unsigned char *us_rbuff; /* circular incoming packet buf.*/
- unsigned char *us_rbuff_end; /* end of allocated space */
- unsigned char *us_rbuff_head; /* head of waiting packets */
- unsigned char *us_rbuff_tail; /* tail of waiting packets */
- unsigned char us_rbuff_lock; /* lock: bit 0 head bit 1 tail */
- int inp_sig; /* input ready signal for pgrp */
- int inp_sig_pid; /* process to get notified */
-
- /* items to support the select() function */
- struct wait_queue *write_wait; /* queue for reading processes */
- struct wait_queue *read_wait; /* queue for writing processes */
-
- /* PPP interface statistics. */
- struct ppp_stats stats; /* statistic information */
-
- /* PPP demand dial information. */
- struct ppp_ddinfo ddinfo; /* demand dial information */
-};
-
-#endif /* __KERNEL__ */
-#endif /* _LINUX_PPP_H */
-
-
projects / ppp.git / commitdiff