From e525d0eb89e1528268acf406d5fcf4cf390f5d4e Mon Sep 17 00:00:00 2001 From: wollman Date: Fri, 23 Sep 1994 00:10:32 +0000 Subject: Initial revision --- sys/net/if_ppp.h | 146 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 146 insertions(+) create mode 100644 sys/net/if_ppp.h (limited to 'sys/net/if_ppp.h') diff --git a/sys/net/if_ppp.h b/sys/net/if_ppp.h new file mode 100644 index 0000000..9f70af0 --- /dev/null +++ b/sys/net/if_ppp.h @@ -0,0 +1,146 @@ +/* + * 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. + * + * $Id: if_ppp.h,v 1.5 1994/01/25 05:56:08 deraadt Exp $ + */ + +#ifndef _IF_PPP_H_ +#define _IF_PPP_H_ + +/* + * Standard PPP header. + */ +struct ppp_header { + u_char ph_address; /* Address Field */ + u_char ph_control; /* Control Field */ + u_short ph_protocol; /* Protocol Field */ +}; + +#define PPP_HDRLEN 4 /* sizeof(struct ppp_header) must be 4 */ +#define PPP_FCSLEN 2 /* octets for FCS */ + +#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_XNS 0x25 /* Xerox NS */ +#define PPP_VJC_COMP 0x2d /* VJ compressed TCP */ +#define PPP_VJC_UNCOMP 0x2f /* VJ uncompressed TCP */ +#define PPP_COMP 0xfd /* compressed packet */ +#define PPP_LCP 0xc021 /* Link Control Protocol */ +#define PPP_CCP 0x80fd /* Compression Control Protocol */ + +/* + * Important FCS values. + */ +#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]) + +/* + * Packet sizes + */ +#define PPP_MTU 1500 /* Default MTU (size of Info field) */ +#define PPP_MRU 1500 /* Default MRU (max receive unit) */ +#define PPP_MAXMRU 65000 /* Largest MRU we allow */ + +/* Extended asyncmap - allows any character to be escaped. */ +typedef u_long ext_accm[8]; + +/* + * Structure describing each ppp unit. + */ +struct ppp_softc { + struct ifnet sc_if; /* network-visible interface */ + u_int sc_flags; /* see below */ + void *sc_devp; /* pointer to device-dependent structure */ + int (*sc_start) __P((struct ppp_softc *)); /* start routine */ + short sc_mru; /* max receive unit */ + pid_t sc_xfer; /* used in xferring unit to another dev */ + struct ifqueue sc_inq; /* TTY side input queue */ + struct ifqueue sc_fastq; /* IP interactive output packet queue */ +#ifdef VJC + struct slcompress sc_comp; /* vjc control buffer */ +#endif + u_int sc_bytessent; /* count of octets sent */ + u_int sc_bytesrcvd; /* count of octets received */ + caddr_t sc_bpf; /* hook for BPF */ + + /* Device-dependent part for async lines. */ + ext_accm sc_asyncmap; /* async control character map */ + u_long sc_rasyncmap; /* receive async control char map */ + struct mbuf *sc_outm; /* mbuf chain being output currently */ + struct mbuf *sc_m; /* pointer to input mbuf chain */ + struct mbuf *sc_mc; /* pointer to current input mbuf */ + char *sc_mp; /* pointer to next char in input mbuf */ + short sc_ilen; /* length of input-packet-so-far */ + u_short sc_fcs; /* FCS so far (input) */ + u_short sc_outfcs; /* FCS so far for output packet */ + u_char sc_rawin[16]; /* chars as received */ + int sc_rawin_count; /* # in sc_rawin */ +}; + +/* 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_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 0x0fffffff /* 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_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 */ + +/* this stuff doesn't belong here... */ +#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 */ + +#if !defined(ifr_mtu) +#define ifr_mtu ifr_metric +#endif + +#endif /* _IF_PPP_H_ */ -- cgit v1.1