Initial revision

diff --git a/include/net/if_ppp.h b/include/net/if_ppp.h
new file mode 100644 (file)
index 0000000..e519739
--- /dev/null
+++ b/include/net/if_ppp.h
@@ -0,0 +1,122 @@
+/*
+ * 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.
+ *
+ * Modified by Paul Mackerras (paulus@cs.anu.edu.au)
+ * Added PPP_MRU, sc_outm, sc_fastq, sc_bpf.
+ *
+ * if_ppp.h,v 1.2 1993/08/31 00:05:31 paulus Exp
+ */
+
+/* Portions Copyright (C) 1990 Brad K. Clements (streams support)
+   (huh?  there isn't any streams support in this file)
+*/
+
+/*
+ * 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_HEADER_LEN 4       /* octets, must == sizeof(struct ppp_header) */
+#define PPP_FCS_LEN    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 types.
+ */
+#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_LCP                0xc021  /* Link 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])
+
+#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 */
+#define        PPP_HIWAT       400     /* Don't start a new packet if HIWAT on que */
+
+struct ppp_softc {
+       struct ifnet sc_if;     /* network-visible interface */
+       u_int   sc_flags;       /* see below */
+       struct  tty *sc_ttyp;   /* pointer to tty structure */
+       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 */
+       short   sc_mru;         /* max receive unit */
+       u_long  sc_asyncmap;    /* async control character map */
+       u_long  sc_rasyncmap;   /* receive async control char map */
+       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;
+       u_int   sc_bytesrcvd;
+       caddr_t sc_bpf;
+};
+
+/* 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_MASK         0x0000ffff      /* bits that user can change */
+
+/* state bits */
+#define        SC_ESCAPED      0x00010000      /* saw a PPP_ESCAPE */
+#define        SC_FLUSH        0x00020000      /* flush input until next PPP_FLAG */
+
+#define t_sc T_LINEP
+
+/* 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 */
+
+/* old copies of PPP may have defined this */
+#if !defined(ifr_mtu)
+#define ifr_mtu        ifr_metric
+#endif
+

diff --git a/include/net/ppp_str.h b/include/net/ppp_str.h
new file mode 100644 (file)
index 0000000..dacea49
--- /dev/null
+++ b/include/net/ppp_str.h
@@ -0,0 +1,69 @@
+/*
+  ppp_str.h - streams version include file
+
+  defines ioctl calls for MRU, COMPPROT and ASYNCMAP
+
+  Copyright (C) 1990 Brad K. Clements, All Rights Reserved,
+  See copyright statement in NOTES
+*/
+
+#include       <sys/ioccom.h>
+
+#ifdef __STDC__
+#define        SIOCSIFCOMPAC   _IOW('p', 130, char)
+#define        SIOCSIFCOMPPROT _IOW('p', 131, char)
+#define        SIOCSIFMRU      _IOW('p', 132, int)
+#define        SIOCGIFMRU      _IOR('p', 133, int)
+#define        SIOCGIFASYNCMAP _IOR('p', 134, long)
+#define        SIOCSIFASYNCMAP _IOW('p', 135, long)
+#define        SIOCGETU        _IOR('p', 136, int)     /* get unit number */
+#define        SIOCSIFVJCOMP   _IOW('p', 137, char)    /* enable/disable VJ Compression */
+#define        SIOCGIFDEBUG    _IOR('p', 138, int)     /* get debug flags */
+#define        SIOCSIFDEBUG    _IOW('p', 139, int)     /* set debug flags */
+
+#else
+/* traditional C compiler */
+#define        SIOCSIFCOMPAC   _IOW(p, 130, char)
+#define        SIOCSIFCOMPPROT _IOW(p, 131, char)
+#define        SIOCSIFMRU      _IOW(p, 132, int)
+#define        SIOCGIFMRU      _IOR(p, 133, int)
+#define        SIOCGIFASYNCMAP _IOR(p, 134, long)
+#define        SIOCSIFASYNCMAP _IOW(p, 135, long)
+#define        SIOCGETU        _IOR(p, 136, int)       /* get unit number */
+#define        SIOCSIFVJCOMP   _IOW(p, 137, char)      /* enable/disable VJ Compression */
+#define        SIOCGIFDEBUG    _IOR(p, 138, int)       /* get debug flags */
+#define        SIOCSIFDEBUG    _IOW(p, 139, int)       /* set debug flags */
+#endif
+
+struct ppp_if_info {
+       int     pii_flags;
+#define        PII_FLAGS_INUSE         0x1             /* in use by  a stream  */
+#define        PII_FLAGS_COMPAC        0x2
+#define        PII_FLAGS_COMPPROT      0x4
+#define        PII_FLAGS_ATTACHED      0x8             /* already if_attached  */
+#define        PII_FLAGS_VJC_ON        0x10            /* VJ TCP header compression enabled */
+       struct  ifnet   pii_ifnet;
+       queue_t         *pii_writeq;            /* used by ppp_output   */
+#ifdef VJC
+       struct  slcompress      pii_sc_comp;    /* vjc control buffer */
+#endif
+#ifdef PPP_STATS
+       struct  pppstat {
+               u_int   ppp_ibytes;
+               u_int   ppp_ipackets;
+               u_int   ppp_ierrors;
+               u_int   ppp_obytes;
+               u_int   ppp_opackets;
+               u_int   ppp_oerrors;
+       } pii_stats;
+#endif
+};
+
+#ifdef        STREAMS
+/* defines for streams modules */
+#define       IF_INPUT_ERROR  0xe1
+#define       IF_OUTPUT_ERROR 0xe2
+
+#define       ALLOCBSIZE      64              /* how big of a buffer block to
+allocate for each chunk of the input chain */
+#endif

diff --git a/include/net/slcompress.h b/include/net/slcompress.h
new file mode 100644 (file)
index 0000000..3cf9a20
--- /dev/null
+++ b/include/net/slcompress.h
@@ -0,0 +1,140 @@
+/*
+ * Definitions for tcp compression routines.
+ *
+ * $Header: /home/paulus/ppp/samba.org/ppp/include/net/slcompress.h,v 1.1 1994/02/23 03:49:22 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.
+ */
+
+#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 */
+
+extern void sl_compress_init(/* struct slcompress * */);
+extern u_char sl_compress_tcp(/* struct mbuf *, struct ip *,
+                               struct slcompress *, int compress_cid_flag */);
+extern int sl_uncompress_tcp(/* u_char **, int,  u_char, struct slcompress * */);