LXR linux/drivers/net/slip/Kconfig

   1# SPDX-License-Identifier: GPL-2.0-only
   2#
   3# SLIP network device configuration
   4#
   5
   6config SLIP
   7        tristate "SLIP (serial line) support"
   8        depends on TTY
   9        ---help---
  10          Say Y if you intend to use SLIP or CSLIP (compressed SLIP) to
  11          connect to your Internet service provider or to connect to some
  12          other local Unix box or if you want to configure your Linux box as a
  13          Slip/CSlip server for other people to dial in. SLIP (Serial Line
  14          Internet Protocol) is a protocol used to send Internet traffic over
  15          serial connections such as telephone lines or null modem cables;
  16          nowadays, the protocol PPP is more commonly used for this same
  17          purpose.
  18
  19          Normally, your access provider has to support SLIP in order for you
  20          to be able to use it, but there is now a SLIP emulator called SLiRP
  21          around (available from
  22          <ftp://ibiblio.org/pub/Linux/system/network/serial/>) which
  23          allows you to use SLIP over a regular dial up shell connection. If
  24          you plan to use SLiRP, make sure to say Y to CSLIP, below. The
  25          NET-3-HOWTO, available from
  26          <http://www.tldp.org/docs.html#howto>, explains how to
  27          configure SLIP. Note that you don't need this option if you just
  28          want to run term (term is a program which gives you almost full
  29          Internet connectivity if you have a regular dial up shell account on
  30          some Internet connected Unix computer. Read
  31          <http://www.bart.nl/~patrickr/term-howto/Term-HOWTO.html>). SLIP
  32          support will enlarge your kernel by about 4 KB. If unsure, say N.
  33
  34          To compile this driver as a module, choose M here. The module
  35          will be called slip.
  36
  37config SLHC
  38        tristate
  39        ---help---
  40          This option enables Van Jacobsen serial line header compression
  41          routines.
  42
  43if SLIP
  44
  45config SLIP_COMPRESSED
  46        bool "CSLIP compressed headers"
  47        depends on SLIP
  48        select SLHC
  49        ---help---
  50          This protocol is faster than SLIP because it uses compression on the
  51          TCP/IP headers (not on the data itself), but it has to be supported
  52          on both ends. Ask your access provider if you are not sure and
  53          answer Y, just in case. You will still be able to use plain SLIP. If
  54          you plan to use SLiRP, the SLIP emulator (available from
  55          <ftp://ibiblio.org/pub/Linux/system/network/serial/>) which
  56          allows you to use SLIP over a regular dial up shell connection, you
  57          definitely want to say Y here. The NET-3-HOWTO, available from
  58          <http://www.tldp.org/docs.html#howto>, explains how to configure
  59          CSLIP. This won't enlarge your kernel.
  60
  61config SLIP_SMART
  62        bool "Keepalive and linefill"
  63        depends on SLIP
  64        ---help---
  65          Adds additional capabilities to the SLIP driver to support the
  66          RELCOM line fill and keepalive monitoring. Ideal on poor quality
  67          analogue lines.
  68
  69config SLIP_MODE_SLIP6
  70        bool "Six bit SLIP encapsulation"
  71        depends on SLIP
  72        ---help---
  73          Just occasionally you may need to run IP over hostile serial
  74          networks that don't pass all control characters or are only seven
  75          bit. Saying Y here adds an extra mode you can use with SLIP:
  76          "slip6". In this mode, SLIP will only send normal ASCII symbols over
  77          the serial device. Naturally, this has to be supported at the other
  78          end of the link as well. It's good enough, for example, to run IP
  79          over the async ports of a Camtec JNT Pad. If unsure, say N.
  80
  81endif # SLIP
  82