linux/include/linux/wanrouter.h
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   1/*****************************************************************************
   2* wanrouter.h   Definitions for the WAN Multiprotocol Router Module.
   3*               This module provides API and common services for WAN Link
   4*               Drivers and is completely hardware-independent.
   5*
   6* Author:       Nenad Corbic <ncorbic@sangoma.com>
   7*               Gideon Hack     
   8* Additions:    Arnaldo Melo
   9*
  10* Copyright:    (c) 1995-2000 Sangoma Technologies Inc.
  11*
  12*               This program is free software; you can redistribute it and/or
  13*               modify it under the terms of the GNU General Public License
  14*               as published by the Free Software Foundation; either version
  15*               2 of the License, or (at your option) any later version.
  16* ============================================================================
  17* Jul 21, 2000  Nenad Corbic    Added WAN_FT1_READY State
  18* Feb 24, 2000  Nenad Corbic    Added support for socket based x25api
  19* Jan 28, 2000  Nenad Corbic    Added support for the ASYNC protocol.
  20* Oct 04, 1999  Nenad Corbic    Updated for 2.1.0 release
  21* Jun 02, 1999  Gideon Hack     Added support for the S514 adapter.
  22* May 23, 1999  Arnaldo Melo    Added local_addr to wanif_conf_t
  23*                               WAN_DISCONNECTING state added
  24* Jul 20, 1998  David Fong      Added Inverse ARP options to 'wanif_conf_t'
  25* Jun 12, 1998  David Fong      Added Cisco HDLC support.
  26* Dec 16, 1997  Jaspreet Singh  Moved 'enable_IPX' and 'network_number' to
  27*                               'wanif_conf_t'
  28* Dec 05, 1997  Jaspreet Singh  Added 'pap', 'chap' to 'wanif_conf_t'
  29*                               Added 'authenticator' to 'wan_ppp_conf_t'
  30* Nov 06, 1997  Jaspreet Singh  Changed Router Driver version to 1.1 from 1.0
  31* Oct 20, 1997  Jaspreet Singh  Added 'cir','bc','be' and 'mc' to 'wanif_conf_t'
  32*                               Added 'enable_IPX' and 'network_number' to 
  33*                               'wan_device_t'.  Also added defines for
  34*                               UDP PACKET TYPE, Interrupt test, critical values
  35*                               for RACE conditions.
  36* Oct 05, 1997  Jaspreet Singh  Added 'dlci_num' and 'dlci[100]' to 
  37*                               'wan_fr_conf_t' to configure a list of dlci(s)
  38*                               for a NODE 
  39* Jul 07, 1997  Jaspreet Singh  Added 'ttl' to 'wandev_conf_t' & 'wan_device_t'
  40* May 29, 1997  Jaspreet Singh  Added 'tx_int_enabled' to 'wan_device_t'
  41* May 21, 1997  Jaspreet Singh  Added 'udp_port' to 'wan_device_t'
  42* Apr 25, 1997  Farhan Thawar   Added 'udp_port' to 'wandev_conf_t'
  43* Jan 16, 1997  Gene Kozin      router_devlist made public
  44* Jan 02, 1997  Gene Kozin      Initial version (based on wanpipe.h).
  45*****************************************************************************/
  46
  47#ifndef _ROUTER_H
  48#define _ROUTER_H
  49
  50#define ROUTER_NAME     "wanrouter"     /* in case we ever change it */
  51#define ROUTER_VERSION  1               /* version number */
  52#define ROUTER_RELEASE  1               /* release (minor version) number */
  53#define ROUTER_IOCTL    'W'             /* for IOCTL calls */
  54#define ROUTER_MAGIC    0x524D4157L     /* signature: 'WANR' reversed */
  55
  56/* IOCTL codes for /proc/router/<device> entries (up to 255) */
  57enum router_ioctls
  58{
  59        ROUTER_SETUP    = ROUTER_IOCTL<<8,      /* configure device */
  60        ROUTER_DOWN,                            /* shut down device */
  61        ROUTER_STAT,                            /* get device status */
  62        ROUTER_IFNEW,                           /* add interface */
  63        ROUTER_IFDEL,                           /* delete interface */
  64        ROUTER_IFSTAT,                          /* get interface status */
  65        ROUTER_USER     = (ROUTER_IOCTL<<8)+16, /* driver-specific calls */
  66        ROUTER_USER_MAX = (ROUTER_IOCTL<<8)+31
  67};
  68
  69/* identifiers for displaying proc file data for dual port adapters */
  70#define PROC_DATA_PORT_0 0x8000 /* the data is for port 0 */
  71#define PROC_DATA_PORT_1 0x8001 /* the data is for port 1 */
  72
  73/* NLPID for packet encapsulation (ISO/IEC TR 9577) */
  74#define NLPID_IP        0xCC    /* Internet Protocol Datagram */
  75#define NLPID_SNAP      0x80    /* IEEE Subnetwork Access Protocol */
  76#define NLPID_CLNP      0x81    /* ISO/IEC 8473 */
  77#define NLPID_ESIS      0x82    /* ISO/IEC 9542 */
  78#define NLPID_ISIS      0x83    /* ISO/IEC ISIS */
  79#define NLPID_Q933      0x08    /* CCITT Q.933 */
  80
  81/* Miscellaneous */
  82#define WAN_IFNAME_SZ   15      /* max length of the interface name */
  83#define WAN_DRVNAME_SZ  15      /* max length of the link driver name */
  84#define WAN_ADDRESS_SZ  31      /* max length of the WAN media address */
  85#define USED_BY_FIELD   8       /* max length of the used by field */
  86
  87/* Defines for UDP PACKET TYPE */
  88#define UDP_PTPIPE_TYPE         0x01
  89#define UDP_FPIPE_TYPE          0x02
  90#define UDP_CPIPE_TYPE          0x03
  91#define UDP_DRVSTATS_TYPE       0x04
  92#define UDP_INVALID_TYPE        0x05
  93
  94/* Command return code */
  95#define CMD_OK          0               /* normal firmware return code */
  96#define CMD_TIMEOUT     0xFF            /* firmware command timed out */
  97
  98/* UDP Packet Management */
  99#define UDP_PKT_FRM_STACK       0x00
 100#define UDP_PKT_FRM_NETWORK     0x01
 101
 102/* Maximum interrupt test counter */
 103#define MAX_INTR_TEST_COUNTER   100
 104
 105/* Critical Values for RACE conditions*/
 106#define CRITICAL_IN_ISR         0xA1
 107#define CRITICAL_INTR_HANDLED   0xB1
 108
 109/****** Data Types **********************************************************/
 110
 111/*----------------------------------------------------------------------------
 112 * X.25-specific link-level configuration.
 113 */
 114typedef struct wan_x25_conf
 115{
 116        unsigned lo_pvc;        /* lowest permanent circuit number */
 117        unsigned hi_pvc;        /* highest permanent circuit number */
 118        unsigned lo_svc;        /* lowest switched circuit number */
 119        unsigned hi_svc;        /* highest switched circuit number */
 120        unsigned hdlc_window;   /* HDLC window size (1..7) */
 121        unsigned pkt_window;    /* X.25 packet window size (1..7) */
 122        unsigned t1;            /* HDLC timer T1, sec (1..30) */
 123        unsigned t2;            /* HDLC timer T2, sec (0..29) */
 124        unsigned t4;            /* HDLC supervisory frame timer = T4 * T1 */
 125        unsigned n2;            /* HDLC retransmission limit (1..30) */
 126        unsigned t10_t20;       /* X.25 RESTART timeout, sec (1..255) */
 127        unsigned t11_t21;       /* X.25 CALL timeout, sec (1..255) */
 128        unsigned t12_t22;       /* X.25 RESET timeout, sec (1..255) */
 129        unsigned t13_t23;       /* X.25 CLEAR timeout, sec (1..255) */
 130        unsigned t16_t26;       /* X.25 INTERRUPT timeout, sec (1..255) */
 131        unsigned t28;           /* X.25 REGISTRATION timeout, sec (1..255) */
 132        unsigned r10_r20;       /* RESTART retransmission limit (0..250) */
 133        unsigned r12_r22;       /* RESET retransmission limit (0..250) */
 134        unsigned r13_r23;       /* CLEAR retransmission limit (0..250) */
 135        unsigned ccitt_compat;  /* compatibility mode: 1988/1984/1980 */
 136        unsigned x25_conf_opt;   /* User defined x25 config optoins */
 137        unsigned char LAPB_hdlc_only; /* Run in HDLC only mode */
 138        unsigned char logging;   /* Control connection logging */  
 139        unsigned char oob_on_modem; /* Whether to send modem status to the user app */
 140} wan_x25_conf_t;
 141
 142/*----------------------------------------------------------------------------
 143 * Frame relay specific link-level configuration.
 144 */
 145typedef struct wan_fr_conf
 146{
 147        unsigned signalling;    /* local in-channel signalling type */
 148        unsigned t391;          /* link integrity verification timer */
 149        unsigned t392;          /* polling verification timer */
 150        unsigned n391;          /* full status polling cycle counter */
 151        unsigned n392;          /* error threshold counter */
 152        unsigned n393;          /* monitored events counter */
 153        unsigned dlci_num;      /* number of DLCs (access node) */
 154        unsigned  dlci[100];    /* List of all DLCIs */
 155} wan_fr_conf_t;
 156
 157/*----------------------------------------------------------------------------
 158 * PPP-specific link-level configuration.
 159 */
 160typedef struct wan_ppp_conf
 161{
 162        unsigned restart_tmr;   /* restart timer */
 163        unsigned auth_rsrt_tmr; /* authentication timer */
 164        unsigned auth_wait_tmr; /* authentication timer */
 165        unsigned mdm_fail_tmr;  /* modem failure timer */
 166        unsigned dtr_drop_tmr;  /* DTR drop timer */
 167        unsigned connect_tmout; /* connection timeout */
 168        unsigned conf_retry;    /* max. retry */
 169        unsigned term_retry;    /* max. retry */
 170        unsigned fail_retry;    /* max. retry */
 171        unsigned auth_retry;    /* max. retry */
 172        unsigned auth_options;  /* authentication opt. */
 173        unsigned ip_options;    /* IP options */
 174        char    authenticator;  /* AUTHENTICATOR or not */
 175        char    ip_mode;        /* Static/Host/Peer */
 176} wan_ppp_conf_t;
 177
 178/*----------------------------------------------------------------------------
 179 * CHDLC-specific link-level configuration.
 180 */
 181typedef struct wan_chdlc_conf
 182{
 183        unsigned char ignore_dcd;       /* Protocol options:            */
 184        unsigned char ignore_cts;       /*  Ignore these to determine   */
 185        unsigned char ignore_keepalive; /*  link status (Yes or No)     */
 186        unsigned char hdlc_streaming;   /*  hdlc_streaming mode (Y/N) */
 187        unsigned char receive_only;     /*  no transmit buffering (Y/N) */
 188        unsigned keepalive_tx_tmr;      /* transmit keepalive timer */
 189        unsigned keepalive_rx_tmr;      /* receive  keepalive timer */
 190        unsigned keepalive_err_margin;  /* keepalive_error_tolerance */
 191        unsigned slarp_timer;           /* SLARP request timer */
 192} wan_chdlc_conf_t;
 193
 194
 195/*----------------------------------------------------------------------------
 196 * WAN device configuration. Passed to ROUTER_SETUP IOCTL.
 197 */
 198typedef struct wandev_conf
 199{
 200        unsigned magic;         /* magic number (for verification) */
 201        unsigned config_id;     /* configuration structure identifier */
 202                                /****** hardware configuration ******/
 203        unsigned ioport;        /* adapter I/O port base */
 204        unsigned long maddr;    /* dual-port memory address */
 205        unsigned msize;         /* dual-port memory size */
 206        int irq;                /* interrupt request level */
 207        int dma;                /* DMA request level */
 208        char S514_CPU_no[1];    /* S514 PCI adapter CPU number ('A' or 'B') */
 209        unsigned PCI_slot_no;   /* S514 PCI adapter slot number */
 210        char auto_pci_cfg;      /* S515 PCI automatic slot detection */
 211        char comm_port;         /* Communication Port (PRI=0, SEC=1) */ 
 212        unsigned bps;           /* data transfer rate */
 213        unsigned mtu;           /* maximum transmit unit size */
 214        unsigned udp_port;      /* UDP port for management */
 215        unsigned char ttl;      /* Time To Live for UDP security */
 216        unsigned char ft1;      /* FT1 Configurator Option */
 217        char interface;         /* RS-232/V.35, etc. */
 218        char clocking;          /* external/internal */
 219        char line_coding;       /* NRZ/NRZI/FM0/FM1, etc. */
 220        char station;           /* DTE/DCE, primary/secondary, etc. */
 221        char connection;        /* permanent/switched/on-demand */
 222        char read_mode;         /* read mode: Polling or interrupt */
 223        char receive_only;      /* disable tx buffers */
 224        char tty;               /* Create a fake tty device */
 225        unsigned tty_major;     /* Major number for wanpipe tty device */
 226        unsigned tty_minor;     /* Minor number for wanpipe tty device */
 227        unsigned tty_mode;      /* TTY operation mode SYNC or ASYNC */
 228        char backup;            /* Backup Mode */
 229        unsigned hw_opt[4];     /* other hardware options */
 230        unsigned reserved[4];
 231                                /****** arbitrary data ***************/
 232        unsigned data_size;     /* data buffer size */
 233        void* data;             /* data buffer, e.g. firmware */
 234        union                   /****** protocol-specific ************/
 235        {
 236                wan_x25_conf_t x25;     /* X.25 configuration */
 237                wan_ppp_conf_t ppp;     /* PPP configuration */
 238                wan_fr_conf_t fr;       /* frame relay configuration */
 239                wan_chdlc_conf_t chdlc; /* Cisco HDLC configuration */
 240        } u;
 241} wandev_conf_t;
 242
 243/* 'config_id' definitions */
 244#define WANCONFIG_X25   101     /* X.25 link */
 245#define WANCONFIG_FR    102     /* frame relay link */
 246#define WANCONFIG_PPP   103     /* synchronous PPP link */
 247#define WANCONFIG_CHDLC 104     /* Cisco HDLC Link */
 248#define WANCONFIG_BSC   105     /* BiSync Streaming */
 249#define WANCONFIG_HDLC  106     /* HDLC Support */
 250#define WANCONFIG_MPPP  107     /* Multi Port PPP over RAW CHDLC */
 251
 252/*
 253 * Configuration options defines.
 254 */
 255/* general options */
 256#define WANOPT_OFF      0
 257#define WANOPT_ON       1
 258#define WANOPT_NO       0
 259#define WANOPT_YES      1
 260
 261/* intercace options */
 262#define WANOPT_RS232    0
 263#define WANOPT_V35      1
 264
 265/* data encoding options */
 266#define WANOPT_NRZ      0
 267#define WANOPT_NRZI     1
 268#define WANOPT_FM0      2
 269#define WANOPT_FM1      3
 270
 271/* link type options */
 272#define WANOPT_POINTTOPOINT     0       /* RTS always active */
 273#define WANOPT_MULTIDROP        1       /* RTS is active when transmitting */
 274
 275/* clocking options */
 276#define WANOPT_EXTERNAL 0
 277#define WANOPT_INTERNAL 1
 278
 279/* station options */
 280#define WANOPT_DTE              0
 281#define WANOPT_DCE              1
 282#define WANOPT_CPE              0
 283#define WANOPT_NODE             1
 284#define WANOPT_SECONDARY        0
 285#define WANOPT_PRIMARY          1
 286
 287/* connection options */
 288#define WANOPT_PERMANENT        0       /* DTR always active */
 289#define WANOPT_SWITCHED         1       /* use DTR to setup link (dial-up) */
 290#define WANOPT_ONDEMAND         2       /* activate DTR only before sending */
 291
 292/* frame relay in-channel signalling */
 293#define WANOPT_FR_ANSI          1       /* ANSI T1.617 Annex D */
 294#define WANOPT_FR_Q933          2       /* ITU Q.933A */
 295#define WANOPT_FR_LMI           3       /* LMI */
 296
 297/* PPP IP Mode Options */
 298#define WANOPT_PPP_STATIC       0
 299#define WANOPT_PPP_HOST         1
 300#define WANOPT_PPP_PEER         2
 301
 302/* ASY Mode Options */
 303#define WANOPT_ONE              1
 304#define WANOPT_TWO              2
 305#define WANOPT_ONE_AND_HALF     3
 306
 307#define WANOPT_NONE     0
 308#define WANOPT_ODD      1
 309#define WANOPT_EVEN     2
 310
 311/* CHDLC Protocol Options */
 312/* DF Commented out for now.
 313
 314#define WANOPT_CHDLC_NO_DCD             IGNORE_DCD_FOR_LINK_STAT
 315#define WANOPT_CHDLC_NO_CTS             IGNORE_CTS_FOR_LINK_STAT
 316#define WANOPT_CHDLC_NO_KEEPALIVE       IGNORE_KPALV_FOR_LINK_STAT
 317*/
 318
 319/* Port options */
 320#define WANOPT_PRI 0
 321#define WANOPT_SEC 1
 322/* read mode */
 323#define WANOPT_INTR     0
 324#define WANOPT_POLL     1
 325
 326
 327#define WANOPT_TTY_SYNC  0
 328#define WANOPT_TTY_ASYNC 1
 329/*----------------------------------------------------------------------------
 330 * WAN Link Status Info (for ROUTER_STAT IOCTL).
 331 */
 332typedef struct wandev_stat
 333{
 334        unsigned state;         /* link state */
 335        unsigned ndev;          /* number of configured interfaces */
 336
 337        /* link/interface configuration */
 338        unsigned connection;    /* permanent/switched/on-demand */
 339        unsigned media_type;    /* Frame relay/PPP/X.25/SDLC, etc. */
 340        unsigned mtu;           /* max. transmit unit for this device */
 341
 342        /* physical level statistics */
 343        unsigned modem_status;  /* modem status */
 344        unsigned rx_frames;     /* received frames count */
 345        unsigned rx_overruns;   /* receiver overrun error count */
 346        unsigned rx_crc_err;    /* receive CRC error count */
 347        unsigned rx_aborts;     /* received aborted frames count */
 348        unsigned rx_bad_length; /* unexpetedly long/short frames count */
 349        unsigned rx_dropped;    /* frames discarded at device level */
 350        unsigned tx_frames;     /* transmitted frames count */
 351        unsigned tx_underruns;  /* aborted transmissions (underruns) count */
 352        unsigned tx_timeouts;   /* transmission timeouts */
 353        unsigned tx_rejects;    /* other transmit errors */
 354
 355        /* media level statistics */
 356        unsigned rx_bad_format; /* frames with invalid format */
 357        unsigned rx_bad_addr;   /* frames with invalid media address */
 358        unsigned tx_retries;    /* frames re-transmitted */
 359        unsigned reserved[16];  /* reserved for future use */
 360} wandev_stat_t;
 361
 362/* 'state' defines */
 363enum wan_states
 364{
 365        WAN_UNCONFIGURED,       /* link/channel is not configured */
 366        WAN_DISCONNECTED,       /* link/channel is disconnected */
 367        WAN_CONNECTING,         /* connection is in progress */
 368        WAN_CONNECTED,          /* link/channel is operational */
 369        WAN_LIMIT,              /* for verification only */
 370        WAN_DUALPORT,           /* for Dual Port cards */
 371        WAN_DISCONNECTING,
 372        WAN_FT1_READY           /* FT1 Configurator Ready */
 373};
 374
 375enum {
 376        WAN_LOCAL_IP,
 377        WAN_POINTOPOINT_IP,
 378        WAN_NETMASK_IP,
 379        WAN_BROADCAST_IP
 380};
 381
 382/* 'modem_status' masks */
 383#define WAN_MODEM_CTS   0x0001  /* CTS line active */
 384#define WAN_MODEM_DCD   0x0002  /* DCD line active */
 385#define WAN_MODEM_DTR   0x0010  /* DTR line active */
 386#define WAN_MODEM_RTS   0x0020  /* RTS line active */
 387
 388/*----------------------------------------------------------------------------
 389 * WAN interface (logical channel) configuration (for ROUTER_IFNEW IOCTL).
 390 */
 391typedef struct wanif_conf
 392{
 393        unsigned magic;                 /* magic number */
 394        unsigned config_id;             /* configuration identifier */
 395        char name[WAN_IFNAME_SZ+1];     /* interface name, ASCIIZ */
 396        char addr[WAN_ADDRESS_SZ+1];    /* media address, ASCIIZ */
 397        char usedby[USED_BY_FIELD];     /* used by API or WANPIPE */
 398        unsigned idle_timeout;          /* sec, before disconnecting */
 399        unsigned hold_timeout;          /* sec, before re-connecting */
 400        unsigned cir;                   /* Committed Information Rate fwd,bwd*/
 401        unsigned bc;                    /* Committed Burst Size fwd, bwd */
 402        unsigned be;                    /* Excess Burst Size fwd, bwd */ 
 403        unsigned char enable_IPX;       /* Enable or Disable IPX */
 404        unsigned char inarp;            /* Send Inverse ARP requests Y/N */
 405        unsigned inarp_interval;        /* sec, between InARP requests */
 406        unsigned long network_number;   /* Network Number for IPX */
 407        char mc;                        /* Multicast on or off */
 408        char local_addr[WAN_ADDRESS_SZ+1];/* local media address, ASCIIZ */
 409        unsigned char port;             /* board port */
 410        unsigned char protocol;         /* prococol used in this channel (TCPOX25 or X25) */
 411        char pap;                       /* PAP enabled or disabled */
 412        char chap;                      /* CHAP enabled or disabled */
 413        unsigned char userid[511];      /* List of User Id */
 414        unsigned char passwd[511];      /* List of passwords */
 415        unsigned char sysname[31];      /* Name of the system */
 416        unsigned char ignore_dcd;       /* Protocol options: */
 417        unsigned char ignore_cts;       /*  Ignore these to determine */
 418        unsigned char ignore_keepalive; /*  link status (Yes or No) */
 419        unsigned char hdlc_streaming;   /*  Hdlc streaming mode (Y/N) */
 420        unsigned keepalive_tx_tmr;      /* transmit keepalive timer */
 421        unsigned keepalive_rx_tmr;      /* receive  keepalive timer */
 422        unsigned keepalive_err_margin;  /* keepalive_error_tolerance */
 423        unsigned slarp_timer;           /* SLARP request timer */
 424        unsigned char ttl;              /* Time To Live for UDP security */
 425        char interface;                 /* RS-232/V.35, etc. */
 426        char clocking;                  /* external/internal */
 427        unsigned bps;                   /* data transfer rate */
 428        unsigned mtu;                   /* maximum transmit unit size */
 429        unsigned char if_down;          /* brind down interface when disconnected */
 430        unsigned char gateway;          /* Is this interface a gateway */
 431        unsigned char true_if_encoding; /* Set the dev->type to true board protocol */
 432
 433        unsigned char asy_data_trans;     /* async API options */
 434        unsigned char rts_hs_for_receive; /* async Protocol options */
 435        unsigned char xon_xoff_hs_for_receive;
 436        unsigned char xon_xoff_hs_for_transmit;
 437        unsigned char dcd_hs_for_transmit;
 438        unsigned char cts_hs_for_transmit;
 439        unsigned char async_mode;
 440        unsigned tx_bits_per_char;
 441        unsigned rx_bits_per_char;
 442        unsigned stop_bits;  
 443        unsigned char parity;
 444        unsigned break_timer;
 445        unsigned inter_char_timer;
 446        unsigned rx_complete_length;
 447        unsigned xon_char;
 448        unsigned xoff_char;
 449        unsigned char receive_only;     /*  no transmit buffering (Y/N) */
 450} wanif_conf_t;
 451
 452#ifdef  __KERNEL__
 453/****** Kernel Interface ****************************************************/
 454
 455#include <linux/fs.h>           /* support for device drivers */
 456#include <linux/proc_fs.h>      /* proc filesystem pragmatics */
 457#include <linux/netdevice.h>    /* support for network drivers */
 458#include <linux/spinlock.h>     /* Support for SMP Locking */
 459
 460/*----------------------------------------------------------------------------
 461 * WAN device data space.
 462 */
 463struct wan_device {
 464        unsigned magic;                 /* magic number */
 465        char* name;                     /* -> WAN device name (ASCIIZ) */
 466        void* private;                  /* -> driver private data */
 467        unsigned config_id;             /* Configuration ID */
 468                                        /****** hardware configuration ******/
 469        unsigned ioport;                /* adapter I/O port base #1 */
 470        char S514_cpu_no[1];            /* PCI CPU Number */
 471        unsigned char S514_slot_no;     /* PCI Slot Number */
 472        unsigned long maddr;            /* dual-port memory address */
 473        unsigned msize;                 /* dual-port memory size */
 474        int irq;                        /* interrupt request level */
 475        int dma;                        /* DMA request level */
 476        unsigned bps;                   /* data transfer rate */
 477        unsigned mtu;                   /* max physical transmit unit size */
 478        unsigned udp_port;              /* UDP port for management */
 479        unsigned char ttl;              /* Time To Live for UDP security */
 480        unsigned enable_tx_int;         /* Transmit Interrupt enabled or not */
 481        char interface;                 /* RS-232/V.35, etc. */
 482        char clocking;                  /* external/internal */
 483        char line_coding;               /* NRZ/NRZI/FM0/FM1, etc. */
 484        char station;                   /* DTE/DCE, primary/secondary, etc. */
 485        char connection;                /* permanent/switched/on-demand */
 486        char signalling;                /* Signalling RS232 or V35 */
 487        char read_mode;                 /* read mode: Polling or interrupt */
 488        char new_if_cnt;                /* Number of interfaces per wanpipe */ 
 489        char del_if_cnt;                /* Number of times del_if() gets called */
 490        unsigned char piggyback;        /* Piggibacking a port */
 491        unsigned hw_opt[4];             /* other hardware options */
 492                                        /****** status and statistics *******/
 493        char state;                     /* device state */
 494        char api_status;                /* device api status */
 495        struct net_device_stats stats;  /* interface statistics */
 496        unsigned reserved[16];          /* reserved for future use */
 497        unsigned long critical;         /* critical section flag */
 498        spinlock_t lock;                /* Support for SMP Locking */
 499
 500                                        /****** device management methods ***/
 501        int (*setup) (struct wan_device *wandev, wandev_conf_t *conf);
 502        int (*shutdown) (struct wan_device *wandev);
 503        int (*update) (struct wan_device *wandev);
 504        int (*ioctl) (struct wan_device *wandev, unsigned cmd,
 505                unsigned long arg);
 506        int (*new_if)(struct wan_device *wandev, struct net_device *dev,
 507                      wanif_conf_t *conf);
 508        int (*del_if)(struct wan_device *wandev, struct net_device *dev);
 509                                        /****** maintained by the router ****/
 510        struct wan_device* next;        /* -> next device */
 511        struct net_device* dev;         /* list of network interfaces */
 512        unsigned ndev;                  /* number of interfaces */
 513        struct proc_dir_entry *dent;    /* proc filesystem entry */
 514};
 515
 516/* Public functions available for device drivers */
 517extern int register_wan_device(struct wan_device *wandev);
 518extern int unregister_wan_device(char *name);
 519
 520/* Proc interface functions. These must not be called by the drivers! */
 521extern int wanrouter_proc_init(void);
 522extern void wanrouter_proc_cleanup(void);
 523extern int wanrouter_proc_add(struct wan_device *wandev);
 524extern int wanrouter_proc_delete(struct wan_device *wandev);
 525extern long wanrouter_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
 526
 527/* Public Data */
 528/* list of registered devices */
 529extern struct wan_device *wanrouter_router_devlist;
 530
 531#endif  /* __KERNEL__ */
 532#endif  /* _ROUTER_H */
 533
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