Version from ppp-2.1 release.
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paulus
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3f7fd64c45
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cd4969fcb4
@ -16,21 +16,12 @@
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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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* Modified by Paul Mackerras (paulus@cs.anu.edu.au)
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* Added PPP_MRU, sc_outm, sc_fastq, sc_bpf.
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*
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* $Id: if_ppp.h,v 1.5 1994/01/25 05:56:08 deraadt Exp $
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*/
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/*
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*na Portions Copyright (C) 1990 Brad K. Clements (streams support)
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* (huh? there isn't any streams support in this file)
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* $Id: if_ppp.h,v 1.6 1994/05/08 12:34:20 paulus Exp $
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*/
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#ifndef _IF_PPP_H_
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#define _IF_PPP_H_
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/*
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* Standard PPP header.
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*/
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@ -40,8 +31,8 @@ struct ppp_header {
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u_short ph_protocol; /* Protocol Field */
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};
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#define PPP_HDRLEN 4 /* sizeof(struct ppp_header) */
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#define PPP_FCS_LEN 2 /* octets for FCS */
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#define PPP_HDRLEN 4 /* sizeof(struct ppp_header) must be 4 */
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#define PPP_FCSLEN 2 /* octets for FCS */
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#define PPP_ALLSTATIONS 0xff /* All-Stations broadcast address */
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#define PPP_UI 0x03 /* Unnumbered Information */
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@ -50,13 +41,15 @@ struct ppp_header {
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#define PPP_TRANS 0x20 /* Asynchronous transparency modifier */
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/*
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* Protocol types.
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* Protocol field values.
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*/
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#define PPP_IP 0x21 /* Internet Protocol */
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#define PPP_XNS 0x25 /* Xerox NS */
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#define PPP_VJC_COMP 0x2d /* VJ compressed TCP */
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#define PPP_VJC_UNCOMP 0x2f /* VJ uncompressed TCP */
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#define PPP_COMP 0xfd /* compressed packet */
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#define PPP_LCP 0xc021 /* Link Control Protocol */
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#define PPP_CCP 0x80fd /* Compression Control Protocol */
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/*
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* Important FCS values.
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@ -65,15 +58,38 @@ struct ppp_header {
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#define PPP_GOODFCS 0xf0b8 /* Good final FCS value */
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#define PPP_FCS(fcs, c) (((fcs) >> 8) ^ fcstab[((fcs) ^ (c)) & 0xff])
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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_MRU 1500 /* Default MRU (max receive unit) */
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#define PPP_MAXMRU 65000 /* Largest MRU we allow */
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#define PPP_HIWAT 400 /* Don't start a new packet if HIWAT on que */
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/* Extended asyncmap - allows any character to be escaped. */
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typedef u_long ext_accm[8];
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/*
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* Structure describing each ppp unit.
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*/
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struct ppp_softc {
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struct ifnet sc_if; /* network-visible interface */
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u_int sc_flags; /* see below */
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struct tty *sc_ttyp; /* pointer to tty structure */
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void *sc_devp; /* pointer to device-dependent structure */
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int (*sc_start) __P((struct ppp_softc *)); /* start routine */
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short sc_mru; /* max receive unit */
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pid_t sc_xfer; /* used in xferring unit to another dev */
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struct ifqueue sc_inq; /* TTY side input queue */
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struct ifqueue sc_fastq; /* IP interactive output packet queue */
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#ifdef VJC
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struct slcompress sc_comp; /* vjc control buffer */
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#endif
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u_int sc_bytessent; /* count of octets sent */
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u_int sc_bytesrcvd; /* count of octets received */
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caddr_t sc_bpf; /* hook for BPF */
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/* Device-dependent part for async lines. */
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ext_accm sc_asyncmap; /* async control character map */
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u_long sc_rasyncmap; /* receive async control char map */
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struct mbuf *sc_outm; /* mbuf chain being output currently */
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struct mbuf *sc_m; /* pointer to input mbuf chain */
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struct mbuf *sc_mc; /* pointer to current input mbuf */
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@ -81,17 +97,8 @@ struct ppp_softc {
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short sc_ilen; /* length of input-packet-so-far */
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u_short sc_fcs; /* FCS so far (input) */
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u_short sc_outfcs; /* FCS so far for output packet */
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short sc_mru; /* max receive unit */
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u_long sc_asyncmap; /* async control character map */
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u_long sc_rasyncmap; /* receive async control char map */
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struct ifqueue sc_inq; /* TTY side input queue */
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struct ifqueue sc_fastq; /* IP interactive output packet queue */
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#ifdef VJC
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struct slcompress sc_comp; /* vjc control buffer */
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#endif
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u_int sc_bytessent;
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u_int sc_bytesrcvd;
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caddr_t sc_bpf;
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u_char sc_rawin[16]; /* chars as received */
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int sc_rawin_count; /* # in sc_rawin */
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};
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/* flags */
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@ -101,11 +108,21 @@ struct ppp_softc {
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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_MASK 0x0000ffff /* bits that user can change */
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#define SC_ENABLE_IP 0x00000100 /* IP packets may be exchanged */
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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_MASK 0x0fffffff /* bits that user can change */
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/* state bits */
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#define SC_ESCAPED 0x00010000 /* saw a PPP_ESCAPE */
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#define SC_FLUSH 0x00020000 /* flush input until next PPP_FLAG */
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#define SC_ESCAPED 0x80000000 /* saw a PPP_ESCAPE */
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#define SC_FLUSH 0x40000000 /* flush input until next PPP_FLAG */
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#define SC_RCV_B7_0 0x01000000 /* have rcvd char with bit 7 = 0 */
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#define SC_RCV_B7_1 0x02000000 /* have rcvd char with bit 7 = 0 */
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#define SC_RCV_EVNP 0x04000000 /* have rcvd char with even parity */
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#define SC_RCV_ODDP 0x08000000 /* have rcvd char with odd parity */
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/* this stuff doesn't belong here... */
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#define PPPIOCGFLAGS _IOR('t', 90, int) /* get configuration flags */
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@ -117,8 +134,11 @@ struct ppp_softc {
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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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/* old copies of PPP may have defined this */
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#if !defined(ifr_mtu)
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#define ifr_mtu ifr_metric
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#endif
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@ -44,7 +44,7 @@
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* so that the entire packet being decompressed doesn't have
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* to be in contiguous memory (just the compressed header).
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*
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* $Id: slcompress.c,v 1.6 1994/01/21 06:33:31 glass Exp $
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* $Id: slcompress.c,v 1.7 1994/05/08 12:34:21 paulus Exp $
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*/
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#include <sys/types.h>
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@ -93,6 +93,34 @@ sl_compress_init(comp)
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}
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/*
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* Like sl_compress_init, but we get to specify the maximum connection
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* ID to use on transmission.
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*/
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void
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sl_compress_setup(comp, max_state)
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struct slcompress *comp;
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int max_state;
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{
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register u_int i;
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register struct cstate *tstate = comp->tstate;
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if ((unsigned) max_state > MAX_STATES - 1)
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max_state = MAX_STATES - 1;
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bzero((char *)comp, sizeof(*comp));
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for (i = max_state; i > 0; --i) {
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tstate[i].cs_id = i;
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tstate[i].cs_next = &tstate[i - 1];
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}
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tstate[0].cs_next = &tstate[max_state];
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tstate[0].cs_id = 0;
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comp->last_cs = &tstate[0];
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comp->last_recv = 255;
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comp->last_xmit = 255;
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comp->flags = SLF_TOSS;
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}
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/* ENCODE encodes a number that is known to be non-zero. ENCODEZ
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* checks for zero (since zero has to be encoded in the long, 3 byte
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* form).
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@ -39,7 +39,7 @@
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* - added sl_uncompress_tcp_part.
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*
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* From: slcompress.h 7.4 90/06/28
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* $Id: slcompress.h,v 1.5 1994/01/15 20:13:16 deraadt Exp $
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* $Id: slcompress.h,v 1.6 1994/05/08 12:34:22 paulus Exp $
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*/
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#ifndef _SLCOMPRESS_H_
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@ -158,6 +158,7 @@ struct slcompress {
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#define SLF_TOSS 1 /* tossing rcvd frames because of input err */
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extern void sl_compress_init __P((struct slcompress *));
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extern void sl_compress_setup __P((struct slcompress *, int maxslot));
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extern u_char sl_compress_tcp __P((struct mbuf *m, struct ip *ip,
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struct slcompress *, int comp_cid_flag));
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extern int sl_uncompress_tcp __P((u_char **bufp, int len, u_int type,
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