2# IrDA protocol configuration
   5menuconfig IRDA
   6        depends on NET && !S390
   7        tristate "IrDA (infrared) subsystem support"
   8        select CRC_CCITT
   9        ---help---
  10          Say Y here if you want to build support for the IrDA (TM) protocols.
  11          The Infrared Data Associations (tm) specifies standards for wireless
  12          infrared communication and is supported by most laptops and PDA's.
  14          To use Linux support for the IrDA (tm) protocols, you will also need
  15          some user-space utilities like irattach.  For more information, see
  16          the file <file:Documentation/networking/irda.txt>.  You also want to
  17          read the IR-HOWTO, available at
  18          <>.
  20          If you want to exchange bits of data (vCal, vCard) with a PDA, you
  21          will need to install some OBEX application, such as OpenObex :
  22          <>
  24          To compile this support as a module, choose M here: the module will
  25          be called irda.
  27comment "IrDA protocols"
  28        depends on IRDA
  30source "net/irda/irlan/Kconfig"
  32source "net/irda/irnet/Kconfig"
  34source "net/irda/ircomm/Kconfig"
  36config IRDA_ULTRA
  37        bool "Ultra (connectionless) protocol"
  38        depends on IRDA
  39        help
  40          Say Y here to support the connectionless Ultra IRDA protocol.
  41          Ultra allows to exchange data over IrDA with really simple devices
  42          (watch, beacon) without the overhead of the IrDA protocol (no handshaking,
  43          no management frames, simple fixed header).
  44          Ultra is available as a special socket : socket(AF_IRDA, SOCK_DGRAM, 1);
  46comment "IrDA options"
  47        depends on IRDA
  50        bool "Cache last LSAP"
  51        depends on IRDA
  52        help
  53          Say Y here if you want IrLMP to cache the last LSAP used.  This
  54          makes sense since most frames will be sent/received on the same
  55          connection.  Enabling this option will save a hash-lookup per frame.
  57          If unsure, say Y.
  59config IRDA_FAST_RR
  60        bool "Fast RRs (low latency)"
  61        depends on IRDA
  62        ---help---
  63          Say Y here is you want IrLAP to send fast RR (Receive Ready) frames
  64          when acting as a primary station.
  65          Disabling this option will make latency over IrDA very bad. Enabling
  66          this option will make the IrDA stack send more packet than strictly
  67          necessary, thus reduce your battery life (but not that much).
  69          Fast RR will make IrLAP send out a RR frame immediately when
  70          receiving a frame if its own transmit queue is currently empty. This
  71          will give a lot of speed improvement when receiving much data since
  72          the secondary station will not have to wait the max. turn around
  73          time (usually 500ms) before it is allowed to transmit the next time.
  74          If the transmit queue of the secondary is also empty, the primary will
  75          start backing-off before sending another RR frame, waiting longer
  76          each time until the back-off reaches the max. turn around time.
  77          This back-off increase in controlled via
  78          /proc/sys/net/irda/fast_poll_increase
  80          If unsure, say Y.
  82config IRDA_DEBUG
  83        bool "Debug information"
  84        depends on IRDA
  85        help
  86          Say Y here if you want the IrDA subsystem to write debug information
  87          to your syslog. You can change the debug level in
  88          /proc/sys/net/irda/debug .
  89          When this option is enabled, the IrDA also perform many extra internal
  90          verifications which will usually prevent the kernel to crash in case of
  91          bugs.
  93          If unsure, say Y (since it makes it easier to find the bugs).
  95source "drivers/net/irda/Kconfig"
  97 kindly hosted by Redpill Linpro AS, provider of Linux consulting and operations services since 1995.