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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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Sven Eckelmann
87b95082db
The Network Coding feature, introduced in 2013, is based on the master thesis "Inter-Flow Network Coding for Wireless Mesh Networks". It relies on the assumption that neighboring mesh nodes can reliably overhear each other's transmissions in promiscuous mode, allowing packets to be combined to reduce forwarding overhead. This assumption no longer holds for modern wireless mesh networks, which are heterogeneous and make overhearing increasingly unreliable. Factors such as multiple spatial streams, varying data rates, beamforming, and OFDMA all prevent nodes from consistently overhearing each other. The current implementation in batman-adv is not able to detect these conditions and would require a more complex layer beyond its neighbor discovery process to do so. In addition, the feature has been unmaintained for years and is discouraged for use. None of the current maintainers have the required test setup to verify its functionality, and known issues remain in its data structures (reference counting, RCU usage, and cleanup handling). Its continued presence also blocks necessary refactoring of the core originator infrastructure. Remove this obsolete and unmaintained feature. Signed-off-by: Sven Eckelmann <sven@narfation.org> Acked-by: Martin Hundebøll <martin@hundeboll.net> Acked-by: Marek Lindner <marek.lindner@mailbox.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
84 lines
2.8 KiB
Plaintext
84 lines
2.8 KiB
Plaintext
# SPDX-License-Identifier: GPL-2.0
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# Copyright (C) B.A.T.M.A.N. contributors:
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#
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# Marek Lindner, Simon Wunderlich
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#
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# B.A.T.M.A.N meshing protocol
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#
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config BATMAN_ADV
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tristate "B.A.T.M.A.N. Advanced Meshing Protocol"
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select CRC32
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help
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B.A.T.M.A.N. (better approach to mobile ad-hoc networking) is
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a routing protocol for multi-hop ad-hoc mesh networks. The
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networks may be wired or wireless. See
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https://www.open-mesh.org/ for more information and user space
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tools.
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config BATMAN_ADV_BATMAN_V
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bool "B.A.T.M.A.N. V protocol"
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depends on BATMAN_ADV && !(CFG80211=m && BATMAN_ADV=y)
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default y
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help
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This option enables the B.A.T.M.A.N. V protocol, the successor
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of the currently used B.A.T.M.A.N. IV protocol. The main
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changes include splitting of the OGM protocol into a neighbor
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discovery protocol (Echo Location Protocol, ELP) and a new OGM
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Protocol OGMv2 for flooding protocol information through the
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network, as well as a throughput based metric.
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B.A.T.M.A.N. V is currently considered experimental and not
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compatible to B.A.T.M.A.N. IV networks.
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config BATMAN_ADV_BLA
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bool "Bridge Loop Avoidance"
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depends on BATMAN_ADV && INET
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select CRC16
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default y
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help
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This option enables BLA (Bridge Loop Avoidance), a mechanism
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to avoid Ethernet frames looping when mesh nodes are connected
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to both the same LAN and the same mesh. If you will never use
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more than one mesh node in the same LAN, you can safely remove
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this feature and save some space.
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config BATMAN_ADV_DAT
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bool "Distributed ARP Table"
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depends on BATMAN_ADV && INET
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default y
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help
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This option enables DAT (Distributed ARP Table), a DHT based
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mechanism that increases ARP reliability on sparse wireless
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mesh networks. If you think that your network does not need
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this option you can safely remove it and save some space.
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config BATMAN_ADV_MCAST
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bool "Multicast optimisation"
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depends on BATMAN_ADV && INET && !(BRIDGE=m && BATMAN_ADV=y)
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default y
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help
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This option enables the multicast optimisation which aims to
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reduce the air overhead while improving the reliability of
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multicast messages.
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config BATMAN_ADV_DEBUG
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bool "B.A.T.M.A.N. debugging"
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depends on BATMAN_ADV
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help
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This is an option for use by developers; most people should
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say N here. This enables compilation of support for
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outputting debugging information to the tracing buffer. The output is
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controlled via the batadv netdev specific log_level setting.
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config BATMAN_ADV_TRACING
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bool "B.A.T.M.A.N. tracing support"
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depends on BATMAN_ADV
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depends on EVENT_TRACING
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help
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This is an option for use by developers; most people should
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say N here. Select this option to gather traces like the debug
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messages using the generic tracing infrastructure of the kernel.
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BATMAN_ADV_DEBUG must also be selected to get trace events for
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batadv_dbg.
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