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# SPDX-License-Identifier: GPL-2.0-only
#
# Asynchronous Transfer Mode (ATM)
#
config ATM
tristate "Asynchronous Transfer Mode (ATM)"
---help---
ATM is a high-speed networking technology for Local Area Networks
and Wide Area Networks. It uses a fixed packet size and is
connection oriented, allowing for the negotiation of minimum
bandwidth requirements.
In order to participate in an ATM network, your Linux box needs an
ATM networking card. If you have that, say Y here and to the driver
of your ATM card below.
Note that you need a set of user-space programs to actually make use
of ATM. See the file <file:Documentation/networking/atm.rst> for
further details.
config ATM_CLIP
tristate "Classical IP over ATM"
depends on ATM && INET
help
Classical IP over ATM for PVCs and SVCs, supporting InARP and
ATMARP. If you want to communication with other IP hosts on your ATM
network, you will typically either say Y here or to "LAN Emulation
(LANE)" below.
config ATM_CLIP_NO_ICMP
bool "Do NOT send ICMP if no neighbour"
depends on ATM_CLIP
help
Normally, an "ICMP host unreachable" message is sent if a neighbour
cannot be reached because there is no VC to it in the kernel's
ATMARP table. This may cause problems when ATMARP table entries are
briefly removed during revalidation. If you say Y here, packets to
such neighbours are silently discarded instead.
config ATM_LANE
tristate "LAN Emulation (LANE) support"
depends on ATM
help
LAN Emulation emulates services of existing LANs across an ATM
network. Besides operating as a normal ATM end station client, Linux
LANE client can also act as an proxy client bridging packets between
ELAN and Ethernet segments. You need LANE if you want to try MPOA.
config ATM_MPOA
tristate "Multi-Protocol Over ATM (MPOA) support"
depends on ATM && INET && ATM_LANE!=n
help
Multi-Protocol Over ATM allows ATM edge devices such as routers,
bridges and ATM attached hosts establish direct ATM VCs across
subnetwork boundaries. These shortcut connections bypass routers
enhancing overall network performance.
config ATM_BR2684
tristate "RFC1483/2684 Bridged protocols"
depends on ATM && INET
help
ATM PVCs can carry ethernet PDUs according to RFC2684 (formerly 1483)
This device will act like an ethernet from the kernels point of view,
with the traffic being carried by ATM PVCs (currently 1 PVC/device).
This is sometimes used over DSL lines. If in doubt, say N.
config ATM_BR2684_IPFILTER
bool "Per-VC IP filter kludge"
depends on ATM_BR2684
help
This is an experimental mechanism for users who need to terminate a
large number of IP-only vcc's. Do not enable this unless you are sure
you know what you are doing.
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