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