| # IPv4 Options |
| |
| # Copyright (c) 2016 Intel Corporation. |
| # SPDX-License-Identifier: Apache-2.0 |
| |
| menuconfig NET_IPV4 |
| bool "IPv4" |
| help |
| Enable IPv4 support. If this is enabled then the device is |
| able to send and receive IPv4 network packets. |
| |
| if NET_IPV4 |
| |
| config NET_IF_MAX_IPV4_COUNT |
| int "Max number of IPv4 network interfaces in the system" |
| 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 IPv4 enabled. |
| |
| config NET_IF_UNICAST_IPV4_ADDR_COUNT |
| int "Max number of unicast IPv4 addresses per network interface" |
| default 2 if NET_IPV4_AUTO |
| default 2 if NET_LOOPBACK |
| default 1 |
| |
| config NET_IF_MCAST_IPV4_ADDR_COUNT |
| int "Max number of multicast IPv4 addresses per network interface" |
| default 2 if NET_IPV4_IGMP |
| default 1 |
| |
| if NET_NATIVE_IPV4 |
| |
| config NET_INITIAL_TTL |
| int "Initial IPv4 time to live value for unicast packets" |
| default 64 |
| range 0 $(UINT8_MAX) |
| help |
| The value should normally be > 0. The device receiving the IPv4 |
| packet will decrement the value and will drop the packet if the TTL |
| value is 0. When sending, the packet is dropped before transmitting |
| to network if TTL is 0. |
| |
| config NET_INITIAL_MCAST_TTL |
| int "Initial IPv4 time to live value for multicast packets" |
| default 1 |
| range 0 $(UINT8_MAX) |
| help |
| The value should normally be > 0. The device receiving the IPv4 |
| packet will decrement the value and will drop the packet if the TTL |
| value is 0. When sending, the packet is dropped before transmitting |
| to network if TTL is 0. |
| The default is 1 (same as in Linux) which means that multicast packets |
| don't leave the local network unless the application explicitly |
| requests it. |
| |
| config NET_IF_MCAST_IPV4_SOURCE_COUNT |
| int "Max number of IPv4 sources per mcast address to be included or excluded" |
| default 1 |
| |
| config NET_ICMPV4_ACCEPT_BROADCAST |
| bool "Accept broadcast ICMPv4 echo-request" |
| help |
| If set, then respond to ICMPv4 echo-request that is sent to |
| broadcast address. |
| |
| config NET_IPV4_ACCEPT_ZERO_BROADCAST |
| bool "Accept 0.0.0.0 broadcast destination address" |
| help |
| If set, then accept UDP packets destined to non-standard |
| 0.0.0.0 broadcast address as described in RFC 1122 ch. 3.3.6 |
| |
| config NET_IPV4_IGMP |
| bool "Internet Group Management Protocol (IGMPv2) support" |
| select NET_IPV4_HDR_OPTIONS |
| help |
| The value depends on your network needs. IGMP should normally be |
| enabled if IPv4 multicast support is needed. Currently we support |
| IGMPv2 and earlier versions. This requires IPv4 header support |
| because IP Router Alert option must be sent. |
| See RFC 2236 for details. |
| |
| config NET_IPV4_IGMPV3 |
| bool "Internet Group Management Protocol version 3 (IGMPv3) support" |
| depends on NET_IPV4_IGMP |
| help |
| Use IGMPv3 for managing the multicast groups. |
| |
| config NET_IPV4_ACD |
| bool "Activate IPv4 address conflict detection (RFC 5227)" |
| depends on NET_ARP |
| help |
| Activate IPv4 address conflict detection specified in RFC 5227. |
| The conflict detection is based on ARP probes/announcements. |
| |
| config NET_IPV4_AUTO |
| bool "IPv4 autoconfiguration [EXPERIMENTAL]" |
| depends on NET_ARP |
| select EXPERIMENTAL |
| select NET_IPV4_ACD |
| select NET_MGMT |
| select NET_MGMT_EVENT |
| select NET_MGMT_EVENT_INFO |
| help |
| Enables IPv4 auto IP address configuration (see RFC 3927) |
| |
| config NET_IPV4_HDR_OPTIONS |
| bool "IPv4 Header options support" |
| help |
| Enables IPv4 header options support. Current support for only |
| ICMPv4 Echo request. Only RecordRoute and Timestamp are handled. |
| |
| config NET_IPV4_FRAGMENT |
| bool "Support IPv4 fragmentation" |
| help |
| IPv4 fragmentation is disabled by default. This limits incoming and |
| outgoing packets to the MTU (1500 bytes for Ethernet). If you enable |
| fragmentation support, please increase amount of RX data buffers so |
| that larger packets can be received. |
| |
| config NET_IPV4_FRAGMENT_MAX_COUNT |
| int "How many packets to reassemble at a time" |
| range 1 16 |
| default 1 |
| depends on NET_IPV4_FRAGMENT |
| help |
| How many fragmented IPv4 packets can be waiting reassembly |
| simultaneously. You may need to increase the network buffer |
| count. |
| |
| config NET_IPV4_FRAGMENT_MAX_PKT |
| int "How many fragments can be handled to reassemble a packet" |
| default 2 |
| depends on NET_IPV4_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. |
| |
| You can increase this value if you expect packets with more |
| than two fragments. |
| |
| config NET_IPV4_FRAGMENT_TIMEOUT |
| int "How long to wait for fragments to be received" |
| range 1 60 |
| default 5 |
| depends on NET_IPV4_FRAGMENT |
| help |
| How long to wait for IPv4 fragment to arrive before the reassembly |
| will timeout. This value is in seconds. |
| |
| config NET_IPV4_PMTU |
| bool "IPv4 Path MTU Discovery" |
| help |
| Enables IPv4 Path MTU Discovery (see RFC 1191) |
| |
| config NET_IPV4_PMTU_DESTINATION_CACHE_ENTRIES |
| int "Number of IPv4 PMTU destination cache entries" |
| default 3 |
| depends on NET_IPV4_PMTU |
| help |
| How many PMTU entries we can track for each destination address. |
| |
| module = NET_IPV4 |
| module-dep = NET_LOG |
| module-str = Log level for core IPv4 |
| module-help = Enables core IPv4 code to output debug messages. |
| source "subsys/net/Kconfig.template.log_config.net" |
| |
| module = NET_ICMPV4 |
| module-dep = NET_LOG |
| module-str = Log level for ICMPv4 |
| module-help = Enables ICMPv4 code to output debug messages. |
| source "subsys/net/Kconfig.template.log_config.net" |
| |
| #if NET_IPV4_ACD |
| module = NET_IPV4_ACD |
| module-dep = NET_LOG |
| module-str = Log level for IPv4 address conflict detection |
| module-help = Enables IPv4 address conflict detection debug messages. |
| source "subsys/net/Kconfig.template.log_config.net" |
| #endif |
| |
| if NET_IPV4_AUTO |
| module = NET_IPV4_AUTO |
| module-dep = NET_LOG |
| module-str = Log level for IPv4 autoconf client |
| module-help = Enable debug diagnostic from IPv4 autoconf client. |
| source "subsys/net/Kconfig.template.log_config.net" |
| endif # NET_IPV4_AUTO |
| |
| endif # NET_NATIVE_IPV4 |
| endif # NET_IPV4 |
