isdn.h

linux 内核源代码

/* $Id: isdn.h,v 1.125.2.3 2004/02/10 01:07:14 keil Exp $
 *
 * Main header for the Linux ISDN subsystem (linklevel).
 *
 * Copyright 1994,95,96 by Fritz Elfert ([e-mail])
 * Copyright 1995,96    by Thinking Objects Software GmbH Wuerzburg
 * Copyright 1995,96    by Michael Hipp ([e-mail])
 * 
 * This software may be used and distributed according to the terms
 * of the GNU General Public License, incorporated herein by reference.
 *
 */

#ifndef __ISDN_H__
#define __ISDN_H__

#include <linux/ioctl.h>

#ifdef CONFIG_COBALT_MICRO_SERVER
/* Save memory */
#define ISDN_MAX_DRIVERS    2
#define ISDN_MAX_CHANNELS   8
#else
#define ISDN_MAX_DRIVERS    32
#define ISDN_MAX_CHANNELS   64
#endif

/* New ioctl-codes */
#define IIOCNETAIF  _IO('I',1)
#define IIOCNETDIF  _IO('I',2)
#define IIOCNETSCF  _IO('I',3)
#define IIOCNETGCF  _IO('I',4)
#define IIOCNETANM  _IO('I',5)
#define IIOCNETDNM  _IO('I',6)
#define IIOCNETGNM  _IO('I',7)
#define IIOCGETSET  _IO('I',8) /* no longer supported */
#define IIOCSETSET  _IO('I',9) /* no longer supported */
#define IIOCSETVER  _IO('I',10)
#define IIOCNETHUP  _IO('I',11)
#define IIOCSETGST  _IO('I',12)
#define IIOCSETBRJ  _IO('I',13)
#define IIOCSIGPRF  _IO('I',14)
#define IIOCGETPRF  _IO('I',15)
#define IIOCSETPRF  _IO('I',16)
#define IIOCGETMAP  _IO('I',17)
#define IIOCSETMAP  _IO('I',18)
#define IIOCNETASL  _IO('I',19)
#define IIOCNETDIL  _IO('I',20)
#define IIOCGETCPS  _IO('I',21)
#define IIOCGETDVR  _IO('I',22)
#define IIOCNETLCR  _IO('I',23) /* dwabc ioctl for LCR from isdnlog */
#define IIOCNETDWRSET  _IO('I',24) /* dwabc ioctl to reset abc-values to default on a net-interface */

#define IIOCNETALN  _IO('I',32)
#define IIOCNETDLN  _IO('I',33)

#define IIOCNETGPN  _IO('I',34)

#define IIOCDBGVAR  _IO('I',127)

#define IIOCDRVCTL  _IO('I',128)

/* cisco hdlck device private ioctls */
#define SIOCGKEEPPERIOD	(SIOCDEVPRIVATE + 0)
#define SIOCSKEEPPERIOD	(SIOCDEVPRIVATE + 1)
#define SIOCGDEBSERINT	(SIOCDEVPRIVATE + 2)
#define SIOCSDEBSERINT	(SIOCDEVPRIVATE + 3)

/* Packet encapsulations for net-interfaces */
#define ISDN_NET_ENCAP_ETHER      0
#define ISDN_NET_ENCAP_RAWIP      1
#define ISDN_NET_ENCAP_IPTYP      2
#define ISDN_NET_ENCAP_CISCOHDLC  3 /* Without SLARP and keepalive */
#define ISDN_NET_ENCAP_SYNCPPP    4
#define ISDN_NET_ENCAP_UIHDLC     5
#define ISDN_NET_ENCAP_CISCOHDLCK 6 /* With SLARP and keepalive    */
#define ISDN_NET_ENCAP_X25IFACE   7 /* Documentation/networking/x25-iface.txt*/
#define ISDN_NET_ENCAP_MAX_ENCAP  ISDN_NET_ENCAP_X25IFACE

/* Facility which currently uses an ISDN-channel */
#define ISDN_USAGE_NONE       0
#define ISDN_USAGE_RAW        1
#define ISDN_USAGE_MODEM      2
#define ISDN_USAGE_NET        3
#define ISDN_USAGE_VOICE      4
#define ISDN_USAGE_FAX        5
#define ISDN_USAGE_MASK       7 /* Mask to get plain usage */
#define ISDN_USAGE_DISABLED  32 /* This bit is set, if channel is disabled */
#define ISDN_USAGE_EXCLUSIVE 64 /* This bit is set, if channel is exclusive */
#define ISDN_USAGE_OUTGOING 128 /* This bit is set, if channel is outgoing  */

#define ISDN_MODEM_NUMREG    24        /* Number of Modem-Registers        */
#define ISDN_LMSNLEN         255 /* Length of tty's Listen-MSN string */
#define ISDN_CMSGLEN	     50	 /* Length of CONNECT-Message to add for Modem */

#define ISDN_MSNLEN          32
#define NET_DV 0x06  /* Data version for isdn_net_ioctl_cfg   */
#define TTY_DV 0x06  /* Data version for iprofd etc.          */

#define INF_DV 0x01  /* Data version for /dev/isdninfo        */

typedef struct {
  char drvid[25];
  unsigned long arg;
} isdn_ioctl_struct;

typedef struct {
  char name[10];
  char phone[ISDN_MSNLEN];
  int  outgoing;
} isdn_net_ioctl_phone;

typedef struct {
  char name[10];     /* Name of interface                     */
  char master[10];   /* Name of Master for Bundling           */
  char slave[10];    /* Name of Slave for Bundling            */
  char eaz[256];     /* EAZ/MSN                               */
  char drvid[25];    /* DriverId for Bindings                 */
  int  onhtime;      /* Hangup-Timeout                        */
  int  charge;       /* Charge-Units                          */
  int  l2_proto;     /* Layer-2 protocol                      */
  int  l3_proto;     /* Layer-3 protocol                      */
  int  p_encap;      /* Encapsulation                         */
  int  exclusive;    /* Channel, if bound exclusive           */
  int  dialmax;      /* Dial Retry-Counter                    */
  int  slavedelay;   /* Delay until slave starts up           */
  int  cbdelay;      /* Delay before Callback                 */
  int  chargehup;    /* Flag: Charge-Hangup                   */
  int  ihup;         /* Flag: Hangup-Timeout on incoming line */
  int  secure;       /* Flag: Secure                          */
  int  callback;     /* Flag: Callback                        */
  int  cbhup;        /* Flag: Reject Call before Callback     */
  int  pppbind;      /* ippp device for bindings              */
  int  chargeint;    /* Use fixed charge interval length      */
  int  triggercps;   /* BogoCPS needed for triggering slave   */
  int  dialtimeout;  /* Dial-Timeout                          */
  int  dialwait;     /* Time to wait after failed dial        */
  int  dialmode;     /* Flag: off / on / auto                 */
} isdn_net_ioctl_cfg;

#define ISDN_NET_DIALMODE_MASK  0xC0    /* bits for status                */
#define ISDN_NET_DM_OFF	        0x00    /* this interface is stopped      */
#define ISDN_NET_DM_MANUAL	0x40    /* this interface is on (manual)  */
#define ISDN_NET_DM_AUTO	0x80    /* this interface is autodial     */
#define ISDN_NET_DIALMODE(x) ((&(x))->flags & ISDN_NET_DIALMODE_MASK)

#ifdef __KERNEL__

#include <linux/errno.h>
#include <linux/fs.h>
#include <linux/major.h>
#include <asm/io.h>
#include <linux/kernel.h>
#include <linux/signal.h>
#include <linux/slab.h>
#include <linux/timer.h>
#include <linux/wait.h>
#include <linux/tty.h>
#include <linux/tty_flip.h>
#include <linux/serial_reg.h>
#include <linux/fcntl.h>
#include <linux/types.h>
#include <linux/interrupt.h>
#include <linux/ip.h>
#include <linux/in.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/skbuff.h>
#include <linux/tcp.h>
#include <linux/mutex.h>

#define ISDN_TTY_MAJOR    43
#define ISDN_TTYAUX_MAJOR 44
#define ISDN_MAJOR        45

/* The minor-devicenumbers for Channel 0 and 1 are used as arguments for
 * physical Channel-Mapping, so they MUST NOT be changed without changing
 * the correspondent code in isdn.c
 */

#define ISDN_MINOR_B        0
#define ISDN_MINOR_BMAX     (ISDN_MAX_CHANNELS-1)
#define ISDN_MINOR_CTRL     64
#define ISDN_MINOR_CTRLMAX  (64 + (ISDN_MAX_CHANNELS-1))
#define ISDN_MINOR_PPP      128
#define ISDN_MINOR_PPPMAX   (128 + (ISDN_MAX_CHANNELS-1))
#define ISDN_MINOR_STATUS   255

#ifdef CONFIG_ISDN_PPP

#ifdef CONFIG_ISDN_PPP_VJ
#  include <net/slhc_vj.h>
#endif

#include <linux/ppp_defs.h>
#include <linux/if_ppp.h>

#include <linux/isdn_ppp.h>
#endif

#ifdef CONFIG_ISDN_X25
#  include <linux/concap.h>
#endif

#include <linux/isdnif.h>

#define ISDN_DRVIOCTL_MASK       0x7f  /* Mask for Device-ioctl */

/* Until now unused */
#define ISDN_SERVICE_VOICE 1
#define ISDN_SERVICE_AB    1<<1 
#define ISDN_SERVICE_X21   1<<2
#define ISDN_SERVICE_G4    1<<3
#define ISDN_SERVICE_BTX   1<<4
#define ISDN_SERVICE_DFUE  1<<5
#define ISDN_SERVICE_X25   1<<6
#define ISDN_SERVICE_TTX   1<<7
#define ISDN_SERVICE_MIXED 1<<8
#define ISDN_SERVICE_FW    1<<9
#define ISDN_SERVICE_GTEL  1<<10
#define ISDN_SERVICE_BTXN  1<<11
#define ISDN_SERVICE_BTEL  1<<12

/* Macros checking plain usage */
#define USG_NONE(x)         ((x & ISDN_USAGE_MASK)==ISDN_USAGE_NONE)
#define USG_RAW(x)          ((x & ISDN_USAGE_MASK)==ISDN_USAGE_RAW)
#define USG_MODEM(x)        ((x & ISDN_USAGE_MASK)==ISDN_USAGE_MODEM)
#define USG_VOICE(x)        ((x & ISDN_USAGE_MASK)==ISDN_USAGE_VOICE)
#define USG_NET(x)          ((x & ISDN_USAGE_MASK)==ISDN_USAGE_NET)
#define USG_FAX(x)          ((x & ISDN_USAGE_MASK)==ISDN_USAGE_FAX)
#define USG_OUTGOING(x)     ((x & ISDN_USAGE_OUTGOING)==ISDN_USAGE_OUTGOING)
#define USG_MODEMORVOICE(x) (((x & ISDN_USAGE_MASK)==ISDN_USAGE_MODEM) || \
                             ((x & ISDN_USAGE_MASK)==ISDN_USAGE_VOICE)     )

/* Timer-delays and scheduling-flags */
#define ISDN_TIMER_RES         4                         /* Main Timer-Resolution   */
#define ISDN_TIMER_02SEC       (HZ/ISDN_TIMER_RES/5)     /* Slow-Timer1 .2 sec      */
#define ISDN_TIMER_1SEC        (HZ/ISDN_TIMER_RES)       /* Slow-Timer2 1 sec       */
#define ISDN_TIMER_RINGING     5 /* tty RINGs = ISDN_TIMER_1SEC * this factor       */
#define ISDN_TIMER_KEEPINT    10 /* Cisco-Keepalive = ISDN_TIMER_1SEC * this factor */
#define ISDN_TIMER_MODEMREAD   1
#define ISDN_TIMER_MODEMPLUS   2
#define ISDN_TIMER_MODEMRING   4
#define ISDN_TIMER_MODEMXMIT   8
#define ISDN_TIMER_NETDIAL    16 
#define ISDN_TIMER_NETHANGUP  32
#define ISDN_TIMER_CARRIER   256 /* Wait for Carrier */
#define ISDN_TIMER_FAST      (ISDN_TIMER_MODEMREAD | ISDN_TIMER_MODEMPLUS | \
                              ISDN_TIMER_MODEMXMIT)
#define ISDN_TIMER_SLOW      (ISDN_TIMER_MODEMRING | ISDN_TIMER_NETHANGUP | \
                              ISDN_TIMER_NETDIAL | ISDN_TIMER_CARRIER)

/* Timeout-Values for isdn_net_dial() */
#define ISDN_TIMER_DTIMEOUT10 (10*HZ/(ISDN_TIMER_02SEC*(ISDN_TIMER_RES+1)))
#define ISDN_TIMER_DTIMEOUT15 (15*HZ/(ISDN_TIMER_02SEC*(ISDN_TIMER_RES+1)))
#define ISDN_TIMER_DTIMEOUT60 (60*HZ/(ISDN_TIMER_02SEC*(ISDN_TIMER_RES+1)))

/* GLOBAL_FLAGS */
#define ISDN_GLOBAL_STOPPED 1

/*=================== Start of ip-over-ISDN stuff =========================*/

/* Feature- and status-flags for a net-interface */
#define ISDN_NET_CONNECTED  0x01       /* Bound to ISDN-Channel             */
#define ISDN_NET_SECURE     0x02       /* Accept calls from phonelist only  */
#define ISDN_NET_CALLBACK   0x04       /* activate callback                 */
#define ISDN_NET_CBHUP      0x08       /* hangup before callback            */
#define ISDN_NET_CBOUT      0x10       /* remote machine does callback      */

#define ISDN_NET_MAGIC      0x49344C02 /* for paranoia-checking             */

/* Phone-list-element */
typedef struct {
  void *next;
  char num[ISDN_MSNLEN];
} isdn_net_phone;

/*
   Principles when extending structures for generic encapsulation protocol
   ("concap") support:
   - Stuff which is hardware specific (here i4l-specific) goes in 
     the netdev -> local structure (here: isdn_net_local)
   - Stuff which is encapsulation protocol specific goes in the structure
     which holds the linux device structure (here: isdn_net_device)
*/

/* Local interface-data */
typedef struct isdn_net_local_s {
  ulong                  magic;
  struct net_device_stats stats;       /* Ethernet Statistics              */
  int                    isdn_device;  /* Index to isdn-device             */
  int                    isdn_channel; /* Index to isdn-channel            */
  int			 ppp_slot;     /* PPPD device slot number          */
  int                    pre_device;   /* Preselected isdn-device          */
  int                    pre_channel;  /* Preselected isdn-channel         */
  int                    exclusive;    /* If non-zero idx to reserved chan.*/
  int                    flags;        /* Connection-flags                 */
  int                    dialretry;    /* Counter for Dialout-retries      */
  int                    dialmax;      /* Max. Number of Dial-retries      */
  int                    cbdelay;      /* Delay before Callback starts     */
  int                    dtimer;       /* Timeout-counter for dialing      */
  char                   msn[ISDN_MSNLEN]; /* MSNs/EAZs for this interface */
  u_char                 cbhup;        /* Flag: Reject Call before Callback*/
  u_char                 dialstate;    /* State for dialing                */
  u_char                 p_encap;      /* Packet encapsulation             */
                                       /*   0 = Ethernet over ISDN         */
				       /*   1 = RAW-IP                     */
                                       /*   2 = IP with type field         */
  u_char                 l2_proto;     /* Layer-2-protocol                 */
				       /* See ISDN_PROTO_L2..-constants in */
                                       /* isdnif.h                         */
                                       /*   0 = X75/LAPB with I-Frames     */
				       /*   1 = X75/LAPB with UI-Frames    */
				       /*   2 = X75/LAPB with BUI-Frames   */
				       /*   3 = HDLC                       */