| # IPv6 Options |
| |
| # Copyright (c) 2016 Intel Corporation. |
| # SPDX-License-Identifier: Apache-2.0 |
| |
| menuconfig NET_IPV6 |
| bool "IPv6" |
| default y |
| help |
| Enable IPv6 support. This should be selected by default as there |
| is limited set of network bearers provided that support IPv4. |
| |
| if NET_IPV6 |
| |
| config NET_IF_MAX_IPV6_COUNT |
| int "Max number of IPv6 network interfaces in the system" |
| default BT_MAX_CONN if NET_L2_BT |
| default NET_VLAN_COUNT if NET_VLAN |
| default 2 if NET_LOOPBACK |
| default 1 |
| help |
| This tells how many network interfaces there will be in the system |
| that will have IPv6 enabled. |
| |
| config NET_IF_UNICAST_IPV6_ADDR_COUNT |
| int "Max number of unicast IPv6 addresses per network interface" |
| default 6 if NET_L2_OPENTHREAD |
| default 3 if NET_LOOPBACK |
| default 2 |
| |
| config NET_IF_MCAST_IPV6_ADDR_COUNT |
| int "Max number of multicast IPv6 addresses per network interface" |
| default 8 if NET_L2_OPENTHREAD |
| default 3 |
| |
| config NET_IF_IPV6_PREFIX_COUNT |
| int "Max number of IPv6 prefixes per network interface" |
| default 2 |
| |
| if NET_NATIVE_IPV6 |
| |
| config NET_IPV6_MTU |
| int "Initial IPv6 MTU value" |
| default 1280 |
| range 1280 1500 |
| help |
| The value should normally be 1280 which is the minimum IPv6 packet |
| size that implementations need to support without fragmentation. |
| |
| config NET_INITIAL_HOP_LIMIT |
| int "Initial IPv6 hop limit value for unicast packets" |
| default 64 |
| range 0 255 |
| help |
| The value should normally be > 0. The device receiving the IPv6 |
| packet will decrement the value and will drop the packet if the hop |
| limit value is 0. When sending, the packet is dropped before |
| transmitting to network if hop limit is 0. |
| |
| config NET_INITIAL_MCAST_HOP_LIMIT |
| int "Initial IPv6 hop limit value for multicast packets" |
| default 1 |
| range 0 255 |
| help |
| The value should normally be > 0. The device receiving the IPv6 |
| packet will decrement the value and will drop the packet if the hop |
| limit value is 0. When sending, the packet is dropped before |
| transmitting to network if hop limit is 0. |
| The default is 1 (same as in IPv4) which means that multicast packets |
| don't leave the local network unless the application explicitly |
| requests it. |
| |
| config NET_IPV6_MAX_NEIGHBORS |
| int "How many IPv6 neighbors are supported" |
| default 8 |
| range 1 254 |
| help |
| The value depends on your network needs. |
| |
| config NET_IPV6_FRAGMENT |
| bool "Support IPv6 fragmentation" |
| help |
| IPv6 fragmentation is disabled by default. This saves memory and |
| should not cause issues normally as we support anyway the minimum |
| length IPv6 packets (1280 bytes). If you enable fragmentation |
| support, please increase amount of RX data buffers so that larger |
| than 1280 byte packets can be received. |
| |
| config NET_IPV6_FRAGMENT_MAX_COUNT |
| int "How many packets to reassemble at a time" |
| range 1 16 |
| default 1 |
| depends on NET_IPV6_FRAGMENT |
| help |
| How many fragmented IPv6 packets can be waiting reassembly |
| simultaneously. Each fragment count might use up to 1280 bytes |
| of memory so you need to plan this and increase the network buffer |
| count. |
| |
| config NET_IPV6_FRAGMENT_MAX_PKT |
| int "How many fragments can be handled to reassemble a packet" |
| default 2 |
| depends on NET_IPV6_FRAGMENT |
| help |
| Incoming fragments are stored in per-packet queue before being |
| reassembled. This value defines the number of fragments that |
| can be handled at the same time to reassemble a single packet. |
| |
| We do not have to accept IPv6 packets larger than 1500 bytes |
| (RFC 2460 ch 5). This means that we should receive everything |
| within the first two fragments. The first one being 1280 bytes and |
| the second one 220 bytes. |
| |
| You can increase this value if you expect packets with more |
| than two fragments. |
| |
| config NET_IPV6_FRAGMENT_TIMEOUT |
| int "How long to wait the fragments to receive" |
| range 1 60 |
| default 5 |
| depends on NET_IPV6_FRAGMENT |
| help |
| How long to wait for IPv6 fragment to arrive before the reassembly |
| will timeout. RFC 2460 chapter 4.5 tells to wait for 60 seconds but |
| this might be too long in memory constrained devices. This value |
| is in seconds. |
| |
| config NET_IPV6_MLD |
| bool "Multicast Listener Discovery support" |
| default y |
| help |
| The value depends on your network needs. MLD should normally |
| be active. Currently we support only MLDv2. See RFC 3810 for |
| details. |
| |
| config NET_IPV6_NBR_CACHE |
| bool "Neighbor cache" |
| default y |
| help |
| The value depends on your network needs. Neighbor cache should |
| normally be active. |
| |
| config NET_IPV6_ND |
| bool "Activate neighbor discovery" |
| depends on NET_IPV6_NBR_CACHE |
| select NET_IPV6_MLD if !NET_TEST |
| default y |
| help |
| The value depends on your network needs. ND should normally |
| be active. |
| |
| config NET_IPV6_DAD |
| bool "Activate duplicate address detection" |
| depends on NET_IPV6_NBR_CACHE |
| default y |
| help |
| The value depends on your network needs. DAD should normally |
| be active. |
| |
| config NET_IPV6_RA_RDNSS |
| bool "Support RA RDNSS option" |
| depends on NET_IPV6_ND |
| select DNS_RESOLVER |
| default y |
| help |
| Support Router Advertisement Recursive DNS Server option. |
| See RFC 6106 for details. The value depends on your network needs. |
| |
| config NET_6LO |
| bool "6lowpan IPv6 Compression library" |
| default y if NET_L2_IEEE802154 |
| help |
| 6lowpan compression and fragmentation. It is enabled by default |
| if 802.15.4 is present, since using IPv6 on it requires it. |
| |
| You may disable this option if you wish to implement a non-IP |
| custom protocol on top of the 802.15.4 MAC (L2) layer. |
| |
| config NET_6LO_CONTEXT |
| bool "6lowpan context based compression" |
| depends on NET_6LO |
| help |
| Enables 6lowpan context based compression based on information |
| received in Router Advertisement (RA) message. |
| |
| config NET_MAX_6LO_CONTEXTS |
| int "Number of supported 6CO (6lowpan contexts options)" |
| depends on NET_6LO_CONTEXT |
| default 1 |
| range 1 16 |
| help |
| 6lowpan context options table size. The value depends on your |
| network and memory consumption. More 6CO options uses more memory. |
| |
| if NET_6LO |
| module = NET_6LO |
| module-dep = NET_LOG |
| module-str = Log level for 6LoWPAN library |
| module-help = Enables 6LoWPAN code to output debug messages. |
| source "subsys/net/Kconfig.template.log_config.net" |
| endif # NET_6LO |
| |
| module = NET_IPV6 |
| module-dep = NET_LOG |
| module-str = Log level for core IPv6 |
| module-help = Enables core IPv6 code to output debug messages. |
| source "subsys/net/Kconfig.template.log_config.net" |
| |
| module = NET_IPV6_ND |
| module-dep = NET_LOG |
| module-str = Log level for IPv6 Neighbor Discovery |
| module-help = Enables IPv6 Neighbor Discovery code to output debug messages. |
| source "subsys/net/Kconfig.template.log_config.net" |
| |
| module = NET_ICMPV6 |
| module-dep = NET_LOG |
| module-str = Log level for ICMPv6 |
| module-help = Enables ICMPv6 code to output debug messages. |
| source "subsys/net/Kconfig.template.log_config.net" |
| |
| module = NET_IPV6_NBR_CACHE |
| module-dep = NET_LOG |
| module-str = Log level for IPv6 neighbor cache |
| module-help = Enables IPv6 Neighbor Cache code to output debug messages. |
| source "subsys/net/Kconfig.template.log_config.net" |
| |
| endif # NET_NATIVE_IPV6 |
| endif # NET_IPV6 |
