drivers/net/slip/Kconfig

   1 # SPDX-License-Identifier: GPL-2.0-only
   2 #
   3 # SLIP network device configuration
   4 #
   5
   6 config 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
  37 config SLHC
  38         tristate
  39         ---help---
  40           This option enables Van Jacobsen serial line header compression
  41           routines.
  42
  43 if SLIP
  44
  45 config 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
  61 config 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
  69 config 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
  81 endif # SLIP