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Usually it is not enough to have just one IPv6 multicast address defined for the network interface. So allocate three IPv6 multicast addresses for the network interface as IPv6 by default uses multicast a lot. This hopefully will avoid some mysterious errors if the addresses run out. Note that this will increase memory usage a bit so you might need to lower the count in your conf file if memory is low. Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
163 lines
4.0 KiB
Plaintext
163 lines
4.0 KiB
Plaintext
# Kconfig.ipv6 - IPv6 Options
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#
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# Copyright (c) 2016 Intel Corporation.
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#
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# SPDX-License-Identifier: Apache-2.0
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#
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menuconfig NET_IPV6
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bool "IPv6"
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default y
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help
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Enable IPv6 support. This should be selected by default as there
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is limited set of network bearers provided that support IPv4.
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if NET_IPV6
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config NET_IF_UNICAST_IPV6_ADDR_COUNT
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int "Max number of unicast IPv6 addresses per network interface"
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default 2
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config NET_IF_MCAST_IPV6_ADDR_COUNT
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int "Max number of multicast IPv6 addresses per network interface"
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default 3
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config NET_IF_IPV6_PREFIX_COUNT
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int "Max number of IPv6 prefixes per network interface"
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default 2
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config NET_INITIAL_HOP_LIMIT
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int "Initial hop limit for a connection"
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default 64
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help
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The value should be > 0
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config NET_IPV6_MAX_NEIGHBORS
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int "How many IPv6 neighbors are supported"
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default 8
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range 1 254
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help
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The value depends on your network needs.
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config NET_IPV6_FRAGMENT
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bool "Support IPv6 fragmentation"
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default n
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help
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IPv6 fragmentation is disabled by default. This saves memory and
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should not cause issues normally as we support anyway the minimum
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length IPv6 packets (1280 bytes). If you enable fragmentation
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support, please increase amount of RX data buffers so that larger
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than 1280 byte packets can be received.
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config NET_IPV6_FRAGMENT_MAX_COUNT
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int "How many packets to reassemble at a time"
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range 1 16
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default 1
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depends on NET_IPV6_FRAGMENT
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help
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How many fragmented IPv6 packets can be waiting reassembly
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simultaneously. Each fragment count might use up to 1280 bytes
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of memory so you need to plan this and increase the network buffer
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count.
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config NET_IPV6_FRAGMENT_TIMEOUT
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int "How long to wait the fragments to receive"
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range 1 60
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default 5
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depends on NET_IPV6_FRAGMENT
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help
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How long to wait for IPv6 fragment to arrive before the reassembly
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will timeout. RFC 2460 chapter 4.5 tells to wait for 60 seconds but
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this might be too long in memory constrained devices. This value
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is in seconds.
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config NET_IPV6_MLD
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bool "Multicast Listener Discovery support"
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default y
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help
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The value depends on your network needs. MLD should normally
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be active. Currently we support only MLDv2. See RFC 3810 for
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details.
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config NET_IPV6_NBR_CACHE
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bool "Neighbor cache"
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default y
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help
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The value depends on your network needs. Neighbor cache should
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normally be active.
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config NET_IPV6_ND
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bool "Activate neighbor discovery"
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depends on NET_IPV6_NBR_CACHE
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default y
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help
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The value depends on your network needs. ND should normally
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be active.
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config NET_IPV6_DAD
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bool "Activate duplicate address detection"
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depends on NET_IPV6_NBR_CACHE
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default y
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help
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The value depends on your network needs. DAD should normally
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be active.
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config NET_IPV6_RA_RDNSS
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bool "Support RA RDNSS option"
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depends on NET_IPV6_ND
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default y
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help
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Support Router Advertisement Recursive DNS Server option.
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See RFC 6106 for details. The value depends on your network needs.
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config NET_6LO
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bool "Enable 6lowpan IPv6 Compression library"
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help
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6lowpan compression and fragmentation.
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config NET_6LO_CONTEXT
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bool "Enable 6lowpan context based compression"
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default n
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depends on NET_6LO
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help
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Enables 6lowpan context based compression based on information
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received in RA(Router Advertisement) message.
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config NET_MAX_6LO_CONTEXTS
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int "Number of supported 6CO (6lowpan contexts options)"
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depends on NET_6LO_CONTEXT
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default 1
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range 1 16
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help
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6lowpan context options table size. The value depends on your
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network and memory consumption. More 6CO options uses more memory.
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config NET_DEBUG_6LO
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bool "Enable 6lowpan debug"
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depends on NET_6LO && NET_LOG
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if NET_LOG
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config NET_DEBUG_IPV6
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bool "Debug core IPv6"
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default n
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help
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Enables core IPv6 code part to output debug messages
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config NET_DEBUG_ICMPV6
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bool "Debug ICMPv6"
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default n
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help
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Enables ICMPv6 code part to output debug messages
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config NET_DEBUG_IPV6_NBR_CACHE
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bool "Debug IPv6 neighbor cache"
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default n
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help
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Enables Neighbor Cache code to output debug messages
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endif # NET_LOG
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endif # NET_IPV6
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