1# SPDX-License-Identifier: GPL-2.0-only 2# 3# Asynchronous Transfer Mode (ATM) 4# 5 6config ATM 7 tristate "Asynchronous Transfer Mode (ATM)" 8 help 9 ATM is a high-speed networking technology for Local Area Networks 10 and Wide Area Networks. It uses a fixed packet size and is 11 connection oriented, allowing for the negotiation of minimum 12 bandwidth requirements. 13 14 In order to participate in an ATM network, your Linux box needs an 15 ATM networking card. If you have that, say Y here and to the driver 16 of your ATM card below. 17 18 Note that you need a set of user-space programs to actually make use 19 of ATM. See the file <file:Documentation/networking/atm.rst> for 20 further details. 21 22config ATM_CLIP 23 tristate "Classical IP over ATM" 24 depends on ATM && INET 25 help 26 Classical IP over ATM for PVCs and SVCs, supporting InARP and 27 ATMARP. If you want to communication with other IP hosts on your ATM 28 network, you will typically either say Y here or to "LAN Emulation 29 (LANE)" below. 30 31config ATM_CLIP_NO_ICMP 32 bool "Do NOT send ICMP if no neighbour" 33 depends on ATM_CLIP 34 help 35 Normally, an "ICMP host unreachable" message is sent if a neighbour 36 cannot be reached because there is no VC to it in the kernel's 37 ATMARP table. This may cause problems when ATMARP table entries are 38 briefly removed during revalidation. If you say Y here, packets to 39 such neighbours are silently discarded instead. 40 41config ATM_LANE 42 tristate "LAN Emulation (LANE) support" 43 depends on ATM 44 help 45 LAN Emulation emulates services of existing LANs across an ATM 46 network. Besides operating as a normal ATM end station client, Linux 47 LANE client can also act as an proxy client bridging packets between 48 ELAN and Ethernet segments. You need LANE if you want to try MPOA. 49 50config ATM_MPOA 51 tristate "Multi-Protocol Over ATM (MPOA) support" 52 depends on ATM && INET && ATM_LANE!=n 53 help 54 Multi-Protocol Over ATM allows ATM edge devices such as routers, 55 bridges and ATM attached hosts establish direct ATM VCs across 56 subnetwork boundaries. These shortcut connections bypass routers 57 enhancing overall network performance. 58 59config ATM_BR2684 60 tristate "RFC1483/2684 Bridged protocols" 61 depends on ATM && INET 62 help 63 ATM PVCs can carry ethernet PDUs according to RFC2684 (formerly 1483) 64 This device will act like an ethernet from the kernels point of view, 65 with the traffic being carried by ATM PVCs (currently 1 PVC/device). 66 This is sometimes used over DSL lines. If in doubt, say N. 67 68config ATM_BR2684_IPFILTER 69 bool "Per-VC IP filter kludge" 70 depends on ATM_BR2684 71 help 72 This is an experimental mechanism for users who need to terminate a 73 large number of IP-only vcc's. Do not enable this unless you are sure 74 you know what you are doing. 75