isdnctrl(4)


NAME

   isdnctrl - ISDN control device

SYNOPSIS

   #include <linux/isdn.h>

DESCRIPTION

   /dev/isdnctrl  is  a  character  device  with major number 45 and minor
   numbers 64 to 127.  It allows controlling functionality  of  the  Linux
   ISDN subsystem.

IOCTL FUNCTIONS

   Currently, the following ioctl calls are supported:

   IIOCNETAIF
          Add an ISDN network interface.
          This  function  adds  a network interface to the kernel's device
          table.   This  interface  can  be  used  just  like  normal  eth
          interfaces.

          Argument:
                 arg  should  point to a zero terminated string of max. 10
                 characters.  if arg is NULL, the kernel assigns a name.

          Return:
                 On success, the name of the new interface  is  copied  to
                 arg.   and  the call returns 0. On failure, an error code
                 is returned.

   IIOCNETASL
          Create a slave interface.
          Creates  a  slave  interface  for  RAW-device  channel-bundling.
          These  devices  behave  like network-interfaces, execpt they are
          invisible to user. Only ISDN parameters can be  controlled,  but
          no   IP-parameters.   IP-parameters   are   inherited  from  the
          corresponding master-device.

          Argument:
                 arg should point to a zero terminated string of  max.  21
                 characters  containing  two  comma-separated  names.  The
                 first part is  the  name  of  an  existing  ISDN  network
                 device, which will be master. The second part will be the
                 name of the new slave interface.

          Return:
                 On success, the name of the new interface  is  copied  to
                 arg.   and  the call returns 0. On failure, an error code
                 is returned.

   IIOCNETDIF
          Delete a network-interface.
          This call deletes an existing ISDN network interface.

          Argument:
                 arg should point to a zero terminated string of  max.  10
                 characters  naming  an  existing  interface which will be
                 deleted. If the interface is a master interface, all it's
                 slave-interfaces will be deleted also.

          Return:
                 On success, the call returns 0. On failure, an error code
                 is returned.

   IIOCNETSCF
          Set configurable parameters of an ISDN network interface.
          This call replaces all ISDN related parameters of  an  interface
          by the parameters given.

          Argument:
                 arg  shoud  point to a struct isdn_net_ioctl_cfg (defined
                 in linux/isdn.h)

          Return:
                 On success, the call returns 0. On failure, an error code
                 is returned.

   IIOCNETGCF
          Get configurable parameters of an ISDN network interface.
          This call returns all ISDN related parameters of an interface.

          Argument:
                 arg  shoud  point to a struct isdn_net_ioctl_cfg (defined
                 in linux/isdn.h) which will  be  filled  by  the  current
                 setup.

          Return:
                 On success, the call returns 0 and the interface-setup is
                 copied to *arg. On failure, an error code is returned.

   IIOCNETANM
          Add a phone number to an ISDN network interface.
          This call adds a phone number to an existing network interface.

          Argument:
                 arg shoud point to a  struct  isdn_net_ioctl_phone  which
                 contains necessary information.

          Return:
                 On  success,  the  call returns 0 and the phone number is
                 added to either outgoing  or  incoming  number  list.  On
                 failure, an error code is returned.

   IIOCNETDNM
          Delete a phone number from an ISDN network interface.
          This  call  deletes  a  phone  number  from  an existing network
          interface.

          Argument:
                 arg shoud point to a  struct  isdn_net_ioctl_phone  which
                 contains necessary information.

          Return:
                 On  success,  the  call returns 0 and the phone number is
                 deleted from either outgoing or incoming number list.  On
                 failure, an error code is returned.

   IIOCNETGNM
          Get list of phone numbers from an ISDN network interface.
          This  call  returns  the  list of phone numbers associated to an
          existing network interface.

          Argument:
                 arg   shoud   point   to   a   a    union    of    struct
                 isdn_net_ioctl_phone and a buffer, large enough to hold a
                 concatenated  list  of  strings  containing   the   phone
                 numbers.

          Return:
                 On  success,  the  call  returns  0 and the list of phone
                 numbers is returned as a space-separated list of  number-
                 strings terminated by a NULL byte.

   IIOCNETDIL
          Trigger dialing of an ISDN network interface.
          This  call initiates dialing of an ISDN network interface, if it
          is not connected. Normally, this ioctl is  not  needed,  because
          ISDN network interface perform dial on demand by default.

          Argument:
                 arg  should  point to a zero terminated string of max. 10
                 characters naming the desired interface.

          Return:
                 On success, the call returns 0 and the  interface  starts
                 dialing.

   IIOCNETHUP
          Hangup an ISDN network interface.
          This  call  initiates hangup of an ISDN network interface, if it
          is connected.

          Argument:
                 arg should point to a zero terminated string of  max.  10
                 characters naming the desired interface.

          Return:
                 On  success,  the  call returns 0 and the interface hangs
                 up.

   IIOCNETALN
          Add a link of an MPP-configured ISDN network interface.
          This call  initiates  dialing  of  a  Multilink-PPP  slave  ISDN
          network interface, if it is not connected.

          Argument:
                 arg  should  point to a zero terminated string of max. 10
                 characters naming the desired interface.

          Return:
                 On success, the call returns 0 and the  interface  starts
                 dialing.

   IIOCNETDLN
          Hangup an MPP-configured ISDN network interface.
          This  call  initiates  hangup  of  an Multilink-PPP ISDN network
          interface, if it is connected.

          Argument:
                 arg should point to a zero terminated string of  max.  10
                 characters naming the desired interface.

          Return:
                 On  success,  the  call returns 0 and the interface hangs
                 up.

   IIOCNETARU
          Add a timeout rule to an ISDN network interface.
          This call adds a timeout rule to an existing interface.

          Argument:
                 arg should  point  to  a  struct  isdn_ioctl_timeout_rule
                 containing the necessary parameters.

          Return:
                 On  success,  the call returns 0 and the rule is added to
                 the rule list of the interface.

   IIOCNETDRU
          Delete a timeout rule from an ISDN network interface.
          This call deletes a timeout rule from an existing interface.

          Argument:
                 arg should  point  to  a  struct  isdn_ioctl_timeout_rule
                 containing the necessary parameters.

          Return:
                 On  success,  the  call returns 0 and the rule is deleted
                 from the rule list of the interface.

   IIOCNETGRU
          Get a timeout rule from an ISDN network interface.
          This call returns a timeout rule from an existing interface.

          Argument:
                 arg should  point  to  a  struct  isdn_ioctl_timeout_rule
                 containing the necessary parameters.

          Return:
                 On  success,  the call returns 0 and the struct is filled
                 from the rule list of the interface.

   IIOCNETBUD
          Handle budget accounting of an ISDN network interface.

          Argument and Return:
                 to be defined.

   IIOCSETVER
          Set verbosity of link level.

          Argument:
                 arg is an integer, defining the new verbose value.

          Return:
                 This call always returns 0.

   IIOCSETGST
          Set global stop flag of link level.

          Argument:
                 arg is an integer, defining the new stop flag value (0 or
                 !0).

          Return:
                 This call always returns 0.

   IIOCSETBRJ
          Set busreject flag of a lowlevel driver.

          Argument:
                 arg   should   point   to   an  struct  isdn_ioctl_struct
                 containing the driver's ID and the value of the busreject
                 flag.

          Return:
                 On  success, the call returns 0 and the busreject flag of
                 the selected driver is set according the given parameter.

   IIOCSIGPRF
          Enable signaling on change of modem profiles.
          With this call, the calling process is registered to  receive  a
          SIGIO  on  every change of any register of any ttyI. Thus it can
          read register settings and save them  to  a  file.  The  calling
          process  has  to  keep  the  device  open  in  order  to receive
          notifications.  As soon as it closes the device, registration is
          deleted.

          Argument:
                 none

          Return:
                 This call always returns 0.

   IIOCGETPRF
          Get all modem register settings.
          With  this  call, all modem registers of all ttyI devices can be
          read.

          Argument:
                 arg   should   point   to   a   buffer   of   length    (
                 ISDN_MODEM_ANZREG + ISDN_MSNLEN ) * ISDN_MAX_CHANNELS.

          Return:
                 On  return,  the  provided  buffer  is  filled  with  the
                 register values.

   IIOCSETPRF
          Set all modem register settings.
          With this call, all modem registers of all ttyI devices  can  be
          written.

          Argument:
                 arg    should   point   to   a   buffer   of   length   (
                 ISDN_MODEM_ANZREG + ISDN_MSNLEN  )  *  ISDN_MAX_CHANNELS.
                 filled with the values of all modem registers.

          Return:
                 On  return, the modem registers are set from the contents
                 of the provided buffer.

   IIOCSETMAP
          Set Mapping table.
          This call is used to set EAZ/MSN mapping of a lowlevel driver.

          Argument:
                 arg should point to a struct isdn_ioctl_struct containing
                 the necessary parameters.

          Return:
                 On  success,  the  mapping  table  is  set from the given
                 parameters an the call returns 0.

   IIOCGETMAP
          Get Mapping table.
          This call is used to get EAZ/MSN mapping of a lowlevel driver.

          Argument:
                 arg should point to a struct isdn_ioctl_struct containing
                 the necessary parameters.

          Return:
                 On success, the current mapping table of the given driver
                 is returned and the call returns 0.

   IIOCDRVCTL
          Lowlevel driver ioctl.
          This call is used for controlling various lowlevel drivers.  The
          ioctl-code  for  this  command is assembled by adding IIOCDRVCTL
          (128) and the desired driver ioctl-code. Therefore,  a  lowlevel
          driver can understand a maximum of 127 different ioctls.

          Argument:
                 arg should point to a struct isdn_ioctl_struct containing
                 the necessary parameters, especially the  driver-Id  must
                 be   filled   correctly.   The   arg   component   inside
                 isdn_ioctl_struct is handed down to  the  driver's  ioctl
                 function.  Its meaning is not defined here and depends on
                 the lowlevel driver. See documentation  for  the  various
                 lewlevel  drivers  for information about driver- specific
                 ioctl.

          Return:
                 The return code depends on the driver's  ioctl  function.
                 Usually, 0 means no error.

AUTHOR

   Fritz Elfert <fritz@isdn4linux.de>

SEE ALSO

   isdninfo(4), icnctrl(4).





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