isdn.h

嵌入式ARM的一些源代码

  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   */
} isdn_net_ioctl_cfg;

#ifdef __KERNEL__

#ifndef STANDALONE
#include <linux/config.h>
#endif
#include <linux/errno.h>
#include <linux/fs.h>
#include <linux/major.h>
#include <asm/segment.h>
#include <asm/io.h>
#include <linux/kernel.h>
#include <linux/signal.h>
#include <linux/malloc.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>

#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/if_pppvar.h>

#include <linux/isdn_ppp.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_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       3                     /* Main Timer-Resolution  */
#define ISDN_TIMER_02SEC     (HZ/(ISDN_TIMER_RES+1)/5) /* Slow-Timer1 .2 sec */
#define ISDN_TIMER_1SEC      (HZ/(ISDN_TIMER_RES+1)) /* Slow-Timer2 1 sec   */
#define ISDN_TIMER_RINGING   5 /* tty RINGs = 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_IPPP      64
#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)

/* 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)))

/* 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      */
#if 0
/* Unused??? */
#define ISDN_NET_CLONE      0x08       /* clone a tmp interface when called */
#define ISDN_NET_TMP        0x10       /* tmp interface until getting an IP */
#define ISDN_NET_DYNAMIC    0x20       /* this link is dynamically allocated */
#endif
#define ISDN_NET_MAGIC      0x49344C02 /* for paranoia-checking             */

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

/* Local interface-data */
typedef struct isdn_net_local_s {
  ulong                  magic;
  char                   name[10];     /* Name of device                   */
  struct enet_statistics 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                       */
  u_char                 l3_proto;     /* Layer-3-protocol                 */
				       /* See ISDN_PROTO_L3..-constants in */
                                       /* isdnif.h                         */
                                       /*   0 = Transparent                */
  int                    huptimer;     /* Timeout-counter for auto-hangup  */
  int                    charge;       /* Counter for charging units       */
  int                    chargetime;   /* Timer for Charging info          */
  int                    hupflags;     /* Flags for charge-unit-hangup:    */
				       /* bit0: chargeint is invalid       */
				       /* bit1: Getting charge-interval    */
                                       /* bit2: Do charge-unit-hangup      */
                                       /* bit3: Do hangup even on incoming */
  int                    outgoing;     /* Flag: outgoing call              */
  int                    onhtime;      /* Time to keep link up             */
  int                    chargeint;    /* Interval between charge-infos    */
  int                    onum;         /* Flag: at least 1 outgoing number */
  int                    cps;          /* current speed of this interface  */
  int                    transcount;   /* byte-counter for cps-calculation */
  int                    sqfull;       /* Flag: netdev-queue overloaded    */
  ulong                  sqfull_stamp; /* Start-Time of overload           */
  ulong                  slavedelay;   /* Dynamic bundling delaytime       */
  int                    triggercps;   /* BogoCPS needed for trigger slave */
  struct device          *srobin;      /* Ptr to Master device for slaves  */
  isdn_net_phone         *phone[2];    /* List of remote-phonenumbers      */
				       /* phone[0] = Incoming Numbers      */
				       /* phone[1] = Outgoing Numbers      */
  isdn_net_phone         *dial;        /* Pointer to dialed number         */
  struct device          *master;      /* Ptr to Master device for slaves  */
  struct device          *slave;       /* Ptr to Slave device for masters  */
  struct isdn_net_local_s *next;       /* Ptr to next link in bundle       */
  struct isdn_net_local_s *last;       /* Ptr to last link in bundle       */
  struct isdn_net_dev_s  *netdev;      /* Ptr to netdev                    */
  struct sk_buff         *first_skb;   /* Ptr to skb that triggers dialing */
  struct sk_buff         *sav_skb;     /* Ptr to skb, rejected by LL-driver*/
#if (LINUX_VERSION_CODE < 0x02010F)
                                       /* Ptr to orig. header_cache_bind   */
  void                   (*org_hcb)(struct hh_cache **,
				    struct device *,
                                    unsigned short, 
				    __u32);
#else
#if (LINUX_VERSION_CODE < 0x2011E)
                                       /* Ptr to orig. hard_header_cache   */
  int                    (*org_hhc)(struct dst_entry *dst,
				    struct dst_entry *neigh,
				    struct hh_cache *hh);
#else
                                       /* Ptr to orig. hard_header_cache   */
  int                    (*org_hhc)(struct dst_entry *dst,
				    struct neighbour *neigh,
				    struct hh_cache *hh);
#endif
#endif
                                       /* Ptr to orig. header_cache_update */
  void                   (*org_hcu)(struct hh_cache *,
				    struct device *,
                                    unsigned char *);
  int  pppbind;                        /* ippp device for bindings         */
} isdn_net_local;

#ifdef CONFIG_ISDN_PPP
struct ippp_bundle {
  int mp_mrru;                        /* unused                             */
  struct mpqueue *last;               /* currently defined in isdn_net_dev  */
  int min;                            /* currently calculated 'on the fly'  */
  long next_num;                      /* we wanna see this seq.-number next */
  struct sqqueue *sq;
  int modify:1;                       /* set to 1 while modifying sqqueue   */
  int bundled:1;                      /* bundle active ?                    */
};
#endif

/* the interface itself */
typedef struct isdn_net_dev_s {
  isdn_net_local  local;
  isdn_net_local *queue;
  void           *next;                /* Pointer to next isdn-interface   */
  struct device   dev;	               /* interface to upper levels        */
#ifdef CONFIG_ISDN_PPP
  struct mpqueue *mp_last; 
  struct ippp_bundle ib;
#endif
} isdn_net_dev;

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

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

#define ISDN_ASYNC_MAGIC          0x49344C01 /* for paranoia-checking        */
#define ISDN_ASYNC_INITIALIZED	  0x80000000 /* port was initialized         */
#define ISDN_ASYNC_CALLOUT_ACTIVE 0x40000000 /* Call out device active       */
#define ISDN_ASYNC_NORMAL_ACTIVE  0x20000000 /* Normal device active         */