isdn.h

linux得一些常用命令,以及linux环境下的c编程

 * variables. Of course, we need to check skb_headroom prior to
 * any access.
 */
typedef struct isdn_audio_skb {
  unsigned short dle_count;
  unsigned char  lock;
} isdn_audio_skb;

#define ISDN_AUDIO_SKB_DLECOUNT(skb) (((isdn_audio_skb*)skb->head)->dle_count)
#define ISDN_AUDIO_SKB_LOCK(skb) (((isdn_audio_skb*)skb->head)->lock)
#endif

/* Private data of AT-command-interpreter */
typedef struct atemu {
	u_char       profile[ISDN_MODEM_NUMREG]; /* Modem-Regs. Profile 0              */
	u_char       mdmreg[ISDN_MODEM_NUMREG];  /* Modem-Registers                    */
	char         pmsn[ISDN_MSNLEN];          /* EAZ/MSNs Profile 0                 */
	char         msn[ISDN_MSNLEN];           /* EAZ/MSN                            */
	char         plmsn[ISDN_LMSNLEN];        /* Listening MSNs Profile 0           */
	char         lmsn[ISDN_LMSNLEN];         /* Listening MSNs                     */
	char         cpn[ISDN_MSNLEN];           /* CalledPartyNumber on incoming call */
	char         connmsg[ISDN_CMSGLEN];	 /* CONNECT-Msg from HL-Driver	       */
#ifdef CONFIG_ISDN_AUDIO
	u_char       vpar[10];                   /* Voice-parameters                   */
	int          lastDLE;                    /* Flag for voice-coding: DLE seen    */
#endif
	int          mdmcmdl;                    /* Length of Modem-Commandbuffer      */
	int          pluscount;                  /* Counter for +++ sequence           */
	int          lastplus;                   /* Timestamp of last +                */
	int	     carrierwait;                /* Seconds of carrier waiting         */
	char         mdmcmd[255];                /* Modem-Commandbuffer                */
	unsigned int charge;                     /* Charge units of current connection */
} atemu;

/* Private data (similar to async_struct in <linux/serial.h>) */
typedef struct modem_info {
  int			magic;
  int			flags;		 /* defined in tty.h               */
  int			x_char;		 /* xon/xoff character             */
  int			mcr;		 /* Modem control register         */
  int                   msr;             /* Modem status register          */
  int                   lsr;             /* Line status register           */
  int			line;
  int			count;		 /* # of fd on device              */
  int			blocked_open;	 /* # of blocked opens             */
  long			session;	 /* Session of opening process     */
  long			pgrp;		 /* pgrp of opening process        */
  int                   online;          /* 1 = B-Channel is up, drop data */
					 /* 2 = B-Channel is up, deliver d.*/
  int                   dialing;         /* Dial in progress or ATA        */
  int                   rcvsched;        /* Receive needs schedule         */
  int                   isdn_driver;	 /* Index to isdn-driver           */
  int                   isdn_channel;    /* Index to isdn-channel          */
  int                   drv_index;       /* Index to dev->usage            */
  int                   ncarrier;        /* Flag: schedule NO CARRIER      */
  unsigned char         last_cause[8];   /* Last cause message             */
  unsigned char         last_num[ISDN_MSNLEN];
	                                 /* Last phone-number              */
  unsigned char         last_l2;         /* Last layer-2 protocol          */
  unsigned char         last_si;         /* Last service                   */
  unsigned char         last_lhup;       /* Last hangup local?             */
  unsigned char         last_dir;        /* Last direction (in or out)     */
  struct timer_list     nc_timer;        /* Timer for delayed NO CARRIER   */
  int                   send_outstanding;/* # of outstanding send-requests */
  int                   xmit_size;       /* max. # of chars in xmit_buf    */
  int                   xmit_count;      /* # of chars in xmit_buf         */
  unsigned char         *xmit_buf;       /* transmit buffer                */
  struct sk_buff_head   xmit_queue;      /* transmit queue                 */
  atomic_t              xmit_lock;       /* Semaphore for isdn_tty_write   */
#ifdef CONFIG_ISDN_AUDIO
  int                   vonline;         /* Voice-channel status           */
					 /* Bit 0 = recording              */
					 /* Bit 1 = playback               */
					 /* Bit 2 = playback, DLE-ETX seen */
  struct sk_buff_head   dtmf_queue;      /* queue for dtmf results         */
  void                  *adpcms;         /* state for adpcm decompression  */
  void                  *adpcmr;         /* state for adpcm compression    */
  void                  *dtmf_state;     /* state for dtmf decoder         */
  void                  *silence_state;  /* state for silence detection    */
#endif
#ifdef CONFIG_ISDN_TTY_FAX
  struct T30_s		*fax;		 /* T30 Fax Group 3 data/interface */
  int			faxonline;	 /* Fax-channel status             */
#endif
  struct tty_struct 	*tty;            /* Pointer to corresponding tty   */
  atemu                 emu;             /* AT-emulator data               */
  struct termios	normal_termios;  /* For saving termios structs     */
  struct termios	callout_termios;
  wait_queue_head_t	open_wait, close_wait;
  struct semaphore      write_sem;
} modem_info;

#define ISDN_MODEM_WINSIZE 8

/* Description of one ISDN-tty */
typedef struct {
  int                refcount;			   /* Number of opens        */
  struct tty_driver  tty_modem;			   /* tty-device             */
  struct tty_driver  cua_modem;			   /* cua-device             */
  struct tty_struct  *modem_table[ISDN_MAX_CHANNELS]; /* ?? copied from Orig */
  struct termios     *modem_termios[ISDN_MAX_CHANNELS];
  struct termios     *modem_termios_locked[ISDN_MAX_CHANNELS];
  modem_info         info[ISDN_MAX_CHANNELS];	   /* Private data           */
} modem;

/*======================= End of ISDN-tty stuff ============================*/

/*======================== Start of V.110 stuff ============================*/
#define V110_BUFSIZE 1024

typedef struct {
	int nbytes;                    /* 1 Matrixbyte -> nbytes in stream     */
	int nbits;                     /* Number of used bits in streambyte    */
	unsigned char key;             /* Bitmask in stream eg. 11 (nbits=2)   */
	int decodelen;                 /* Amount of data in decodebuf          */
	int SyncInit;                  /* Number of sync frames to send        */
	unsigned char *OnlineFrame;    /* Precalculated V110 idle frame        */
	unsigned char *OfflineFrame;   /* Precalculated V110 sync Frame        */
	int framelen;                  /* Length of frames                     */
	int skbuser;                   /* Number of unacked userdata skbs      */
	int skbidle;                   /* Number of unacked idle/sync skbs     */
	int introducer;                /* Local vars for decoder               */
	int dbit;
	unsigned char b;
	int skbres;                    /* space to reserve in outgoing skb     */
	int maxsize;                   /* maxbufsize of lowlevel driver        */
	unsigned char *encodebuf;      /* temporary buffer for encoding        */
	unsigned char decodebuf[V110_BUFSIZE]; /* incomplete V110 matrices     */
} isdn_v110_stream;

/*========================= End of V.110 stuff =============================*/

/*======================= Start of general stuff ===========================*/

typedef struct {
	char *next;
	char *private;
} infostruct;

#define DRV_FLAG_RUNNING 1
#define DRV_FLAG_REJBUS  2
#define DRV_FLAG_LOADED  4

/* Description of hardware-level-driver */
typedef struct {
	ulong               online;           /* Channel-Online flags             */
	ulong               flags;            /* Misc driver Flags                */
	int                 locks;            /* Number of locks for this driver  */
	int                 channels;         /* Number of channels               */
	wait_queue_head_t   st_waitq;         /* Wait-Queue for status-read's     */
	int                 maxbufsize;       /* Maximum Buffersize supported     */
	unsigned long       pktcount;         /* Until now: unused                */
	int                 stavail;          /* Chars avail on Status-device     */
	isdn_if            *interface;        /* Interface to driver              */
	int                *rcverr;           /* Error-counters for B-Ch.-receive */
	int                *rcvcount;         /* Byte-counters for B-Ch.-receive  */
#ifdef CONFIG_ISDN_AUDIO
	unsigned long      DLEflag;           /* Flags: Insert DLE at next read   */
#endif
	struct sk_buff_head *rpqueue;         /* Pointers to start of Rcv-Queue   */
	wait_queue_head_t  *rcv_waitq;       /* Wait-Queues for B-Channel-Reads  */
	wait_queue_head_t  *snd_waitq;       /* Wait-Queue for B-Channel-Send's  */
	char               msn2eaz[10][ISDN_MSNLEN];  /* Mapping-Table MSN->EAZ   */
} driver;

/* Main driver-data */
typedef struct isdn_devt {
	unsigned short    flags;		       /* Bitmapped Flags:           */
	/*                            */
	int               drivers;		       /* Current number of drivers  */
	int               channels;		       /* Current number of channels */
	int               net_verbose;               /* Verbose-Flag               */
	int               modempoll;		       /* Flag: tty-read active      */
	int               tflags;                    /* Timer-Flags:               */
	/*  see ISDN_TIMER_..defines  */
	int               global_flags;
	infostruct        *infochain;                /* List of open info-devs.    */
	wait_queue_head_t info_waitq;               /* Wait-Queue for isdninfo    */
	struct timer_list timer;		       /* Misc.-function Timer       */
	int               chanmap[ISDN_MAX_CHANNELS];/* Map minor->device-channel  */
	int               drvmap[ISDN_MAX_CHANNELS]; /* Map minor->driver-index    */
	int               usage[ISDN_MAX_CHANNELS];  /* Used by tty/ip/voice       */
	char              num[ISDN_MAX_CHANNELS][ISDN_MSNLEN];
	/* Remote number of active ch.*/
	int               m_idx[ISDN_MAX_CHANNELS];  /* Index for mdm....          */
	driver            *drv[ISDN_MAX_DRIVERS];    /* Array of drivers           */
	isdn_net_dev      *netdev;		       /* Linked list of net-if's    */
	char              drvid[ISDN_MAX_DRIVERS][20];/* Driver-ID                 */
	struct task_struct *profd;                   /* For iprofd                 */
	modem             mdm;		       /* tty-driver-data            */
	isdn_net_dev      *rx_netdev[ISDN_MAX_CHANNELS]; /* rx netdev-pointers     */
	isdn_net_dev      *st_netdev[ISDN_MAX_CHANNELS]; /* stat netdev-pointers   */
	ulong             ibytes[ISDN_MAX_CHANNELS]; /* Statistics incoming bytes  */
	ulong             obytes[ISDN_MAX_CHANNELS]; /* Statistics outgoing bytes  */
	int               v110emu[ISDN_MAX_CHANNELS];/* V.110 emulator-mode 0=none */
	atomic_t          v110use[ISDN_MAX_CHANNELS];/* Usage-Semaphore for stream */
	isdn_v110_stream  *v110[ISDN_MAX_CHANNELS];  /* V.110 private data         */
	struct semaphore  sem;                       /* serialize list access*/
	unsigned long     global_features;
#ifdef CONFIG_DEVFS_FS
	devfs_handle_t devfs_handle_isdninfo;
	devfs_handle_t devfs_handle_isdnctrl;
	devfs_handle_t devfs_handle_isdnX[ISDN_MAX_CHANNELS];
	devfs_handle_t devfs_handle_isdnctrlX[ISDN_MAX_CHANNELS];
#ifdef CONFIG_ISDN_PPP
	devfs_handle_t devfs_handle_ipppX[ISDN_MAX_CHANNELS];
#endif
#endif /* CONFIG_DEVFS_FS */
} isdn_dev;

extern isdn_dev *dev;


#endif /* __KERNEL__ */

#endif /* __ISDN_H__ */