sys/net/i4b/include/i386/i4b_isppp.h

   1 /*
   2  * Defines for synchronous PPP/Cisco link level subroutines.
   3  *
   4  * Copyright (C) 1994 Cronyx Ltd.
   5  * Author: Serge Vakulenko, <vak@cronyx.ru>
   6  *
   7  * Heavily revamped to conform to RFC 1661.
   8  * Copyright (C) 1997, Joerg Wunsch.
   9  *
  10  * This software is distributed with NO WARRANTIES, not even the implied
  11  * warranties for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  12  *
  13  * Authors grant any other persons or organizations permission to use
  14  * or modify this software as long as this message is kept with the software,
  15  * all derivative works or modified versions.
  16  *
  17  * From: Version 2.0, Fri Oct  6 20:39:21 MSK 1995
  18  *
  19  * From: if_sppp.h,v 1.14 1999/03/30 13:28:26 phk Exp
  20  *
  21  * $Id: i4b_isppp.h,v 1.5 2000/07/18 15:05:37 hm Exp $
  22  *
  23  * $FreeBSD: src/sys/i386/include/i4b_isppp.h,v 1.1.2.2 2001/09/28 07:43:19 gj Exp $
  24  * $DragonFly: src/sys/net/i4b/include/i386/i4b_isppp.h,v 1.7 2005/06/15 09:26:10 dillon Exp $
  25  */
  26
  27 #ifndef _I4B_ISPPP_H_
  28 #define _I4B_ISPPP_H_
  29
  30 #define SPPP_VJ                 /* use VJ compression */
  31
  32
  33 #ifdef SPPP_VJ
  34 #ifndef _KERNEL
  35 #include <netinet/in_systm.h>
  36 #include <netinet/ip.h>
  37 #include <net/slcompress.h>
  38 #endif
  39 #endif
  40
  41 #define IDX_LCP 0               /* idx into state table */
  42
  43 struct slcp {
  44         u_long  opts;           /* LCP options to send (bitfield) */
  45         u_long  magic;          /* local magic number */
  46         u_long  mru;            /* our max receive unit */
  47         u_long  their_mru;      /* their max receive unit */
  48         u_long  protos;         /* bitmask of protos that are started */
  49         u_char  echoid;         /* id of last keepalive echo request */
  50         /* restart max values, see RFC 1661 */
  51         int     timeout;
  52         int     max_terminate;
  53         int     max_configure;
  54         int     max_failure;
  55 };
  56
  57 #define IDX_IPCP 1              /* idx into state table */
  58
  59 struct sipcp {
  60         u_long  opts;           /* IPCP options to send (bitfield) */
  61         u_int   flags;
  62 #define IPCP_HISADDR_SEEN 1     /* have seen his address already */
  63 #define IPCP_MYADDR_DYN   2     /* my address is dynamically assigned */
  64 #define IPCP_MYADDR_SEEN  4     /* have seen his address already */
  65 #define IPCP_VJ           8     /* We can use VJ compression */
  66         int     max_state;      /* Max-Slot-Id */
  67         int     compress_cid;   /* Comp-Slot-Id */
  68 };
  69
  70 #define AUTHNAMELEN     42
  71 #define AUTHKEYLEN      16
  72
  73 struct sauth {
  74         u_short proto;                  /* authentication protocol to use */
  75         u_short flags;
  76 #define AUTHFLAG_NOCALLOUT      1       /* do not require authentication on */
  77                                         /* callouts */
  78 #define AUTHFLAG_NORECHALLENGE  2       /* do not re-challenge CHAP */
  79         u_char  name[AUTHNAMELEN];      /* system identification name */
  80         u_char  secret[AUTHKEYLEN];     /* secret password */
  81         u_char  challenge[AUTHKEYLEN];  /* random challenge */
  82 };
  83
  84 #define IDX_PAP         2
  85 #define IDX_CHAP        3
  86
  87 #define IDX_COUNT (IDX_CHAP + 1) /* bump this when adding cp's! */
  88
  89 /*
  90  * Don't change the order of this.  Ordering the phases this way allows
  91  * for a comparision of ``pp_phase >= PHASE_AUTHENTICATE'' in order to
  92  * know whether LCP is up.
  93  */
  94 enum ppp_phase {
  95         PHASE_DEAD, PHASE_ESTABLISH, PHASE_TERMINATE,
  96         PHASE_AUTHENTICATE, PHASE_NETWORK
  97 };
  98
  99 struct sppp {
 100         /* NB: pp_arpcom _must_ be first */
 101         struct  arpcom pp_arpcom;    /* network interface data */
 102 #define pp_if   pp_arpcom.ac_if
 103         struct  ifqueue pp_fastq; /* fast output queue */
 104         struct  ifqueue pp_cpq; /* PPP control protocol queue */
 105         struct  sppp *pp_next;  /* next interface in keepalive list */
 106         u_int   pp_mode;        /* major protocol modes (cisco/ppp/...) */
 107         u_int   pp_flags;       /* sub modes */
 108         u_short pp_alivecnt;    /* keepalive packets counter */
 109         u_short pp_loopcnt;     /* loopback detection counter */
 110         u_long  pp_seq;         /* local sequence number */
 111         u_long  pp_rseq;        /* remote sequence number */
 112         time_t  pp_last_sent;
 113         time_t  pp_last_recv;
 114         enum ppp_phase pp_phase;        /* phase we're currently in */
 115         int     state[IDX_COUNT];       /* state machine */
 116         u_char  confid[IDX_COUNT];      /* id of last configuration request */
 117         int     rst_counter[IDX_COUNT]; /* restart counter */
 118         int     fail_counter[IDX_COUNT]; /* negotiation failure counter */
 119         struct callout timeout[IDX_COUNT]; /* per-proto and if callouts */
 120         struct callout pap_my_to; /* PAP needs one more... */
 121         struct slcp lcp;                /* LCP params */
 122         struct sipcp ipcp;              /* IPCP params */
 123         struct sauth myauth;            /* auth params, i'm peer */
 124         struct sauth hisauth;           /* auth params, i'm authenticator */
 125 #ifdef SPPP_VJ
 126         int enable_vj;                  /* enable VJ negotiation */
 127         struct slcompress pp_comp;      /* for VJ compression */
 128 #endif
 129         /*
 130          * These functions are filled in by sppp_attach(), and are
 131          * expected to be used by the lower layer (hardware) drivers
 132          * in order to communicate the (un)availability of the
 133          * communication link.  Lower layer drivers that are always
 134          * ready to communicate (like hardware HDLC) can shortcut
 135          * pp_up from pp_tls, and pp_down from pp_tlf.
 136          */
 137         void    (*pp_up)(struct sppp *sp);
 138         void    (*pp_down)(struct sppp *sp);
 139         /*
 140          * These functions need to be filled in by the lower layer
 141          * (hardware) drivers if they request notification from the
 142          * PPP layer whether the link is actually required.  They
 143          * correspond to the tls and tlf actions.
 144          */
 145         void    (*pp_tls)(struct sppp *sp);
 146         void    (*pp_tlf)(struct sppp *sp);
 147         /*
 148          * These (optional) functions may be filled by the hardware
 149          * driver if any notification of established connections
 150          * (currently: IPCP up) is desired (pp_con) or any internal
 151          * state change of the interface state machine should be
 152          * signaled for monitoring purposes (pp_chg).
 153          */
 154         void    (*pp_con)(struct sppp *sp);
 155         void    (*pp_chg)(struct sppp *sp, int new_state);
 156         /* These two fields are for use by the lower layer */
 157         void    *pp_lowerp;
 158         int     pp_loweri;
 159 };
 160
 161 #define PP_KEEPALIVE    0x01    /* use keepalive protocol */
 162 #define PP_CALLIN       0x08    /* we are being called */
 163 #define PP_NEEDAUTH     0x10    /* remote requested authentication */
 164
 165
 166 #define PP_MTU          1500    /* default/minimal MRU */
 167 #define PP_MAX_MRU      2048    /* maximal MRU we want to negotiate */
 168
 169 /*
 170  * Definitions to pass struct sppp data down into the kernel using the
 171  * SIOC[SG]IFGENERIC ioctl interface.
 172  *
 173  * In order to use this, create a struct spppreq, fill in the cmd
 174  * field with SPPPIOGDEFS, and put the address of this structure into
 175  * the ifr_data portion of a struct ifreq.  Pass this struct to a
 176  * SIOCGIFGENERIC ioctl.  Then replace the cmd field by SPPPIOCDEFS,
 177  * modify the defs field as desired, and pass the struct ifreq now
 178  * to a SIOCSIFGENERIC ioctl.
 179  */
 180
 181 #define SPPPIOGDEFS  ((caddr_t)(('S' << 24) + (1 << 16) + sizeof(struct sppp)))
 182 #define SPPPIOSDEFS  ((caddr_t)(('S' << 24) + (2 << 16) + sizeof(struct sppp)))
 183
 184 struct spppreq {
 185         u_long  cmd;
 186         struct sppp defs;
 187 };
 188
 189 #ifndef SIOCSIFGENERIC
 190 #define SIOCSIFGENERIC   _IOW('i', 57, struct ifreq)    /* generic IF set op */
 191 #endif
 192
 193 #ifndef SIOCGIFGENERIC
 194 #define SIOCGIFGENERIC  _IOWR('i', 58, struct ifreq)    /* generic IF get op */
 195 #endif
 196
 197 #if defined(KERNEL) || defined(_KERNEL)
 198
 199 #ifndef USE_ISPPP
 200
 201 void sppp_attach (struct ifnet *ifp);
 202 void sppp_detach (struct ifnet *ifp);
 203 void sppp_input (struct ifnet *ifp, struct mbuf *m);
 204
 205 int sppp_ioctl (struct ifnet *ifp, u_long cmd, void *data);
 206
 207 struct mbuf *sppp_dequeue (struct ifnet *ifp);
 208 struct mbuf *sppp_pick(struct ifnet *ifp);
 209 int sppp_isempty (struct ifnet *ifp);
 210 void sppp_flush (struct ifnet *ifp);
 211
 212 #else /* USE_ISPPP */
 213
 214 void isppp_attach (struct ifnet *ifp);
 215 void isppp_detach (struct ifnet *ifp);
 216 void isppp_input (struct ifnet *ifp, struct mbuf *m);
 217
 218 int isppp_ioctl (struct ifnet *ifp, u_long cmd, void *data);
 219
 220 struct mbuf *isppp_dequeue (struct ifnet *ifp);
 221 struct mbuf *isppp_pick(struct ifnet *ifp);
 222 int isppp_isempty (struct ifnet *ifp);
 223 void isppp_flush (struct ifnet *ifp);
 224 #endif /* USE_ISPPP */
 225
 226 #endif /* KERNEL */
 227
 228 #endif /* _I4B_ISPPP_H_ */