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