Support for the Frame Relay protocol.

Frame Relay is a fast low-cost way to connect to a remote Internet
access provider or to form a private wide area network. The one
physical line from your box to the local "switch" (i.e. the entry
point to the Frame Relay network, usually at the phone company) can
carry several logical point-to-point connections to other computers
connected to the Frame Relay network. For a general explanation of
the protocol, check out <http://www.mplsforum.org/>.

To use frame relay, you need supporting hardware (called FRAD) and
certain programs from the net-tools package as explained in
Documentation/networking/framerelay.txt.

To compile this driver as a module, choose M here: the
module will be called dlci.

source code:

drivers/net//wan/dlci.c