162 lines
5.0 KiB
Plaintext
162 lines
5.0 KiB
Plaintext
# IPv4 Options
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# Copyright (c) 2016 Intel Corporation.
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# SPDX-License-Identifier: Apache-2.0
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menuconfig NET_IPV4
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bool "IPv4"
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help
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Enable IPv4 support. If this is enabled then the device is
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able to send and receive IPv4 network packets.
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if NET_IPV4
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config NET_INITIAL_TTL
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int "Initial IPv4 time to live value for unicast packets"
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default 64
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range 0 255
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help
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The value should normally be > 0. The device receiving the IPv4
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packet will decrement the value and will drop the packet if the TTL
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value is 0. When sending, the packet is dropped before transmitting
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to network if TTL is 0.
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config NET_INITIAL_MCAST_TTL
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int "Initial IPv4 time to live value for multicast packets"
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default 1
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range 0 255
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help
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The value should normally be > 0. The device receiving the IPv4
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packet will decrement the value and will drop the packet if the TTL
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value is 0. When sending, the packet is dropped before transmitting
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to network if TTL is 0.
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The default is 1 (same as in Linux) which means that multicast packets
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don't leave the local network unless the application explicitly
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requests it.
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config NET_IF_MAX_IPV4_COUNT
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int "Max number of IPv4 network interfaces in the system"
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default NET_VLAN_COUNT if NET_VLAN
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default 2 if NET_LOOPBACK
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default 1
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help
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This tells how many network interfaces there will be in the system
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that will have IPv4 enabled.
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config NET_IF_UNICAST_IPV4_ADDR_COUNT
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int "Max number of unicast IPv4 addresses per network interface"
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default 2 if NET_IPV4_AUTO
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default 2 if NET_LOOPBACK
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default 1
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config NET_IF_MCAST_IPV4_ADDR_COUNT
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int "Max number of multicast IPv4 addresses per network interface"
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default 2 if NET_IPV4_IGMP
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default 1
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config NET_IF_MCAST_IPV4_SOURCE_COUNT
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int "Max number of IPv4 sources per mcast address to be included or excluded"
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default 1
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config NET_ICMPV4_ACCEPT_BROADCAST
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bool "Accept broadcast ICMPv4 echo-request"
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help
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If set, then respond to ICMPv4 echo-request that is sent to
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broadcast address.
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config NET_IPV4_ACCEPT_ZERO_BROADCAST
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bool "Accept 0.0.0.0 broadcast destination address"
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help
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If set, then accept UDP packets destined to non-standard
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0.0.0.0 broadcast address as described in RFC 1122 ch. 3.3.6
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config NET_IPV4_IGMP
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bool "Internet Group Management Protocol (IGMPv2) support"
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select NET_IPV4_HDR_OPTIONS
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help
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The value depends on your network needs. IGMP should normally be
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enabled if IPv4 multicast support is needed. Currently we support
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IGMPv2 and earlier versions. This requires IPv4 header support
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because IP Router Alert option must be sent.
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See RFC 2236 for details.
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config NET_IPV4_IGMPV3
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bool "Internet Group Management Protocol version 3 (IGMPv3) support"
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depends on NET_IPV4_IGMP
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help
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Use IGMPv3 for managing the multicast groups.
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config NET_IPV4_AUTO
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bool "IPv4 autoconfiguration [EXPERIMENTAL]"
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depends on NET_ARP
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select EXPERIMENTAL
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help
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Enables IPv4 auto IP address configuration (see RFC 3927)
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config NET_IPV4_HDR_OPTIONS
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bool "IPv4 Header options support"
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help
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Enables IPv4 header options support. Current support for only
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ICMPv4 Echo request. Only RecordRoute and Timestamp are handled.
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config NET_IPV4_FRAGMENT
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bool "Support IPv4 fragmentation"
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help
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IPv4 fragmentation is disabled by default. This limits incoming and
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outgoing packets to the MTU (1500 bytes for Ethernet). If you enable
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fragmentation support, please increase amount of RX data buffers so
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that larger packets can be received.
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config NET_IPV4_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_IPV4_FRAGMENT
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help
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How many fragmented IPv4 packets can be waiting reassembly
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simultaneously. You may need to increase the network buffer
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count.
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config NET_IPV4_FRAGMENT_MAX_PKT
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int "How many fragments can be handled to reassemble a packet"
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default 2
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depends on NET_IPV4_FRAGMENT
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help
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Incoming fragments are stored in per-packet queue before being
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reassembled. This value defines the number of fragments that
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can be handled at the same time to reassemble a single packet.
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You can increase this value if you expect packets with more
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than two fragments.
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config NET_IPV4_FRAGMENT_TIMEOUT
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int "How long to wait for fragments to be received"
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range 1 60
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default 5
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depends on NET_IPV4_FRAGMENT
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help
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How long to wait for IPv4 fragment to arrive before the reassembly
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will timeout. This value is in seconds.
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module = NET_IPV4
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module-dep = NET_LOG
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module-str = Log level for core IPv4
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module-help = Enables core IPv4 code to output debug messages.
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source "subsys/net/Kconfig.template.log_config.net"
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module = NET_ICMPV4
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module-dep = NET_LOG
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module-str = Log level for ICMPv4
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module-help = Enables ICMPv4 code to output debug messages.
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source "subsys/net/Kconfig.template.log_config.net"
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if NET_IPV4_AUTO
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module = NET_IPV4_AUTO
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module-dep = NET_LOG
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module-str = Log level for IPv4 autoconf client
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module-help = Enable debug diagnostic from IPv4 autoconf client.
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source "subsys/net/Kconfig.template.log_config.net"
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endif # NET_IPV4_AUTO
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endif # NET_IPV4
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