tty: n_gsm line discipline
Add an implementation of GSM 0710 MUX. The implementation currently supports
- Basic and advanced framing (as either end of the link)
- UI or UIH data frames
- Adaption layer 1-4 (1 and 2 via tty, 3 and 4 as skbuff lists)
- Modem and control messages including the correct retry process
- Flow control
and exposes the MUX channels as a set of virtual tty devices including modem
signals. This is an experimental driver.
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/char/Kconfig b/drivers/char/Kconfig
index 3141dd3..51a5700 100644
--- a/drivers/char/Kconfig
+++ b/drivers/char/Kconfig
@@ -276,11 +276,18 @@
Allows synchronous HDLC communications with tty device drivers that
support synchronous HDLC such as the Microgate SyncLink adapter.
- This driver can only be built as a module ( = code which can be
+ This driver can be built as a module ( = code which can be
inserted in and removed from the running kernel whenever you want).
The module will be called n_hdlc. If you want to do that, say M
here.
+config N_GSM
+ tristate "GSM MUX line discipline support (EXPERIMENTAL)"
+ depends on EXPERIMENTAL
+ help
+ This line discipline provides support for the GSM MUX protocol and
+ presents the mux as a set of 61 individual tty devices.
+
config RISCOM8
tristate "SDL RISCom/8 card support"
depends on SERIAL_NONSTANDARD