net/icmpv6/Kconfig - nuttx - Git at Google

 #
 # For a description of the syntax of this configuration file,
 # see the file kconfig-language.txt in the NuttX tools repository.
 #

 menu "ICMPv6 Networking Support"

 config NET_ICMPv6
 	bool "Enable ICMPv6 networking"
 	default n
 	select NET_MCASTGROUP
 	depends on NET
 	---help---
 		Enable minimal ICMPv6 support. Includes built-in support
 		for sending replies to received ECHO (ping) requests.

 config NET_ICMPv6_NO_STACK
 	bool "Disable ICMPv6 stack"
 	default n
 	select NET_ICMPv6
 	---help---
 		Build without ICMPv6 stack even if ICMPv6 networking support enabled.

 if NET_ICMPv6 && !NET_ICMPv6_NO_STACK

 config NET_ICMPv6_PMTU_ENTRIES
 	int "PMTUD ICMPv6 pmtu entry"
 	default 0
 	---help---
 		The number of the ICMPv6 pmtu entry

 config NET_ICMPv6_PMTU_TIMEOUT
 	int "PMTUD ICMPv6 pmtu entry timeout (Time Unit:minute)"
 	default 10
 	depends on NET_ICMPv6_PMTU_ENTRIES != 0
 	---help---
 		The timeout of the ICMPv6 pmtu entry

 config NET_ICMPv6_SOCKET
 	bool "IPPROTO_ICMP6 socket support"
 	default n
 	select NET_READAHEAD
 	---help---
 		Enable support for IPPROTO_ICMP6 sockets.  These sockets are needed
 		for application level support for sending ICMPv7 ECHO requests and
 		receiving associated ICMPv6 ECHO replies.

 config NET_ICMPv6_CHECKSUMS
 	bool "ICMPv6 checksums"
 	default y
 	---help---
 		Enable/disable ICMPv6 checksum support.

 config NET_ICMPv6_NEIGHBOR
 	bool "Solicit destination addresses"
 	default n
 	---help---
 		Enable logic to send ICMPv6 neighbor solicitation requests if
 		the target IPv6 address mapping does not appear in the Neighbor
 		table.

 if NET_ICMPv6_NEIGHBOR

 config ICMPv6_NEIGHBOR_MAXTRIES
 	int "ICMPv6 neighbor solicitation retries"
 	default 5
 	---help---
 		Send the Neighbor solicitation this number of times before giving
 		up and deciding that the target IP6 address is non reachable.

 config ICMPv6_NEIGHBOR_DELAYMSEC
 	int "ICMPv6 neighbor re-solicit delay"
 	default 20
 	---help---
 		Wait this number of milliseconds after sending the Neighbor
 		Solicitation before checking if the IPv6 address mapping is present
 		in the Neighbor Table.  This time should be related to the maximum
 		round trip time on the network since it is basically the time from
 		when an Neighbor Solicitation is sent until the Neighbor
 		Advertisement is received.

 endif # NET_ICMPv6_NEIGHBOR

 config NET_ICMPv6_AUTOCONF
 	bool "ICMPv6 auto-configuration"
 	default n
 	---help---
 		Enable ioctl() logic that implements ICMPv6 auto configuration.
 		ICMPv6 auto configuration is an alternative to DHCPv6 for obtaining
 		an IPv6 address from a router.

 if NET_ICMPv6_AUTOCONF

 config ICMPv6_AUTOCONF_MAXTRIES
 	int "ICMPv6 router solicitation retries"
 	default 5
 	---help---
 		Send the Router solicitation this number of times before giving
 		up and deciding that no router is going to provide an IP address.

 config ICMPv6_AUTOCONF_DELAYMSEC
 	int "ICMPv6 router re-solicit delay"
 	default 20
 	---help---
 		Wait this number of milliseconds before re-sending the Router
 		Solicitation.  This time should be related to the maximum
 		round trip time on the network since it is basically the time from
 		when an Router Solicitation is sent until the Router
 		Advertisement is received.

 config ICMPv6_AUTOCONF_RDNSS
 	bool "ICMPv6 handle RDNSS field in router advertise"
 	default n
 	---help---
 		Handle the RDNSS field in the Router Advertisement and add it to
 		netdb DNS Server.

 endif # NET_ICMPv6_AUTOCONF

 config NET_ICMPv6_ROUTER
 	bool "Router Advertisement"
 	default n
 	---help---
 		In a router-less environment, NuttX can be configured to provide a
 		response to Router Solicitation messages and, hence, providing
 		addressing to IPv6 nodes on the network.

 if NET_ICMPv6_ROUTER

 config NET_ICMPv6_ROUTER_LIFETIME
 	int "Router Advertisement router lifetime in seconds"
 	default 1800
 	---help---
 		Set the router lifetime for advertising as a default router.
 		Set to 0 to only advertise autoconfiguration prefix without
 		advertising as a router.

 config NET_ICMPv6_ROUTER_MANUAL
 	bool "Manual router prefix"
 	default n
 	---help---
 		Select this to set the advertised router prefix manually. Otherwise, it
 		will be derived from the device IPv6 address and prefix length set in
 		the netdev structure.

 if NET_ICMPv6_ROUTER_MANUAL

 config NET_ICMPv6_PREFLEN
 	int "Prefix length"
 	default 64
 	range 0 128
 	---help---
 		The length (in bits) of the IPv6 address prefix.  This is the number
 		of MS bits under the network mask.  The default of 64 would
 		correspond to a network mask of:

 			0xffff:0xffff:0xffff:0xffff:0x0000:0x0000:0x0000:0x0000.

 comment "Router Prefix"

 config NET_ICMPv6_PREFIX_1
 	hex "[0]"
 	default 0xfc00
 	range 0x0 0xffff
 	---help---
 		This the IPv6 address prefix that will be provided in the IPv6 Router
 		Advertisement message.  This is the first of the 8-values.  The
 		default for all eight values is fc00::0.

 config NET_ICMPv6_PREFIX_2
 	hex "[1]"
 	default 0x0000
 	range 0x0 0xffff
 	---help---
 		This the IPv6 address prefix that will be provided in the IPv6 Router
 		Advertisement message.  This is the second of the 8-values.  The
 		default for all eight values is fc00::0.

 config NET_ICMPv6_PREFIX_3
 	hex "[2]"
 	default 0x0000
 	range 0x0 0xffff
 	---help---
 		This the IPv6 address prefix that will be provided in the IPv6 Router
 		Advertisement message.  This is the third of the 8-values.  The
 		default for all eight values is fc00::0.

 config NET_ICMPv6_PREFIX_4
 	hex "[3]"
 	default 0x0000
 	range 0x0 0xffff
 	---help---
 		This the IPv6 address prefix that will be provided in the IPv6 Router
 		Advertisement message.  This is the fourth of the 8-values.  The
 		default for all eight values is fc00::0.

 config NET_ICMPv6_PREFIX_5
 	hex "[4]"
 	default 0x0000
 	range 0x0 0xffff
 	---help---
 		This the IPv6 address prefix that will be provided in the IPv6 Router
 		Advertisement message.  This is the fifth of the 8-values.  The
 		default for all eight values is fc00::0.

 config NET_ICMPv6_PREFIX_6
 	hex "[5]"
 	default 0x0000
 	range 0x0 0xffff
 	---help---
 		This the IPv6 address prefix that will be provided in the IPv6 Router
 		Advertisement message.  This is the sixth of the 8-values.  The
 		default for all eight values is fc00::0.

 config NET_ICMPv6_PREFIX_7
 	hex "[6]"
 	default 0x0000
 	range 0x0 0xffff
 	---help---
 		This the IPv6 address prefix that will be provided in the IPv6 Router
 		Advertisement message.  This is the seventh of the 8-values.  The
 		default for all eight values is fc00::0.

 config NET_ICMPv6_PREFIX_8
 	hex "[7]"
 	default 0x0000
 	range 0x0 0xffff
 	---help---
 		This the IPv6 address prefix that will be provided in the IPv6 Router
 		Advertisement message.  This is the last of the 8-values.  The
 		default for all eight values is fc00::0.

 config NET_ICMPv6_ROUTER_RDNSS
 	bool "Fill the RDNSS into Router Advertisement"
 	default n
 	---help---
 		Fill the RDNSS from the netdb DNS Server into the Router
 		Advertisement.

 endif # NET_ICMPv6_ROUTER_MANUAL
 endif # NET_ICMPv6_ROUTER

 if NET_ICMPv6_SOCKET

 config NET_ICMPv6_PREALLOC_CONNS
 	int "Preallocated ICMPv6 packet sockets"
 	default 4
 	---help---
 		Number of ICMPv6 connections (all tasks).

 		This number of connections will be pre-allocated during system boot.
 		If dynamic connections allocation is enabled, more connections may
 		be allocated at a later time, as the system needs them. Else this
 		will be the maximum number of connections available to the system
 		at all times.

 		Set to 0 to disable (and rely only on dynamic allocations).

 config NET_ICMPv6_ALLOC_CONNS
 	int "Dynamic ICMPv6 connections allocation"
 	default 0
 	---help---
 		Dynamic memory allocations for ICMPv6.

 		When set to 0 all dynamic allocations are disabled.

 		When set to 1 a new connection will be allocated every time,
 		and it will be free'd when no longer needed.

 		Setting this to 2 or more will allocate the connections in
 		batches (with batch size equal to this config). When a
 		connection is no longer needed, it will be returned to the
 		free connections pool, and it will never be deallocated!

 config NET_ICMPv6_MAX_CONNS
 	int "Maximum number of ICMPv6 connections"
 	default 0
 	depends on NET_ICMPv6_ALLOC_CONNS > 0
 	---help---
 		If dynamic connections allocation is selected (NET_ICMPv6_ALLOC_CONNS > 0)
 		this will limit the number of connections that can be allocated.

 		This is useful in case the system is under very heavy load (or
 		under attack), ensuring that the heap will not be exhausted.

 config NET_ICMPv6_NPOLLWAITERS
 	int "Number of ICMPv6 poll waiters"
 	default 1

 endif # NET_ICMPv6_SOCKET

 endif # NET_ICMPv6 && !NET_ICMPv6_NO_STACK
 endmenu # ICMPv6 Networking Support
	#
	# For a description of the syntax of this configuration file,
	# see the file kconfig-language.txt in the NuttX tools repository.
	#

	menu "ICMPv6 Networking Support"

	config NET_ICMPv6
	bool "Enable ICMPv6 networking"
	default n
	select NET_MCASTGROUP
	depends on NET
	---help---
	Enable minimal ICMPv6 support. Includes built-in support
	for sending replies to received ECHO (ping) requests.

	config NET_ICMPv6_NO_STACK
	bool "Disable ICMPv6 stack"
	default n
	select NET_ICMPv6
	---help---
	Build without ICMPv6 stack even if ICMPv6 networking support enabled.

	if NET_ICMPv6 && !NET_ICMPv6_NO_STACK

	config NET_ICMPv6_PMTU_ENTRIES
	int "PMTUD ICMPv6 pmtu entry"
	default 0
	---help---
	The number of the ICMPv6 pmtu entry

	config NET_ICMPv6_PMTU_TIMEOUT
	int "PMTUD ICMPv6 pmtu entry timeout (Time Unit:minute)"
	default 10
	depends on NET_ICMPv6_PMTU_ENTRIES != 0
	---help---
	The timeout of the ICMPv6 pmtu entry

	config NET_ICMPv6_SOCKET
	bool "IPPROTO_ICMP6 socket support"
	default n
	select NET_READAHEAD
	---help---
	Enable support for IPPROTO_ICMP6 sockets. These sockets are needed
	for application level support for sending ICMPv7 ECHO requests and
	receiving associated ICMPv6 ECHO replies.

	config NET_ICMPv6_CHECKSUMS
	bool "ICMPv6 checksums"
	default y
	---help---
	Enable/disable ICMPv6 checksum support.

	config NET_ICMPv6_NEIGHBOR
	bool "Solicit destination addresses"
	default n
	---help---
	Enable logic to send ICMPv6 neighbor solicitation requests if
	the target IPv6 address mapping does not appear in the Neighbor
	table.

	if NET_ICMPv6_NEIGHBOR

	config ICMPv6_NEIGHBOR_MAXTRIES
	int "ICMPv6 neighbor solicitation retries"
	default 5
	---help---
	Send the Neighbor solicitation this number of times before giving
	up and deciding that the target IP6 address is non reachable.

	config ICMPv6_NEIGHBOR_DELAYMSEC
	int "ICMPv6 neighbor re-solicit delay"
	default 20
	---help---
	Wait this number of milliseconds after sending the Neighbor
	Solicitation before checking if the IPv6 address mapping is present
	in the Neighbor Table. This time should be related to the maximum
	round trip time on the network since it is basically the time from
	when an Neighbor Solicitation is sent until the Neighbor
	Advertisement is received.

	endif # NET_ICMPv6_NEIGHBOR

	config NET_ICMPv6_AUTOCONF
	bool "ICMPv6 auto-configuration"
	default n
	---help---
	Enable ioctl() logic that implements ICMPv6 auto configuration.
	ICMPv6 auto configuration is an alternative to DHCPv6 for obtaining
	an IPv6 address from a router.

	if NET_ICMPv6_AUTOCONF

	config ICMPv6_AUTOCONF_MAXTRIES
	int "ICMPv6 router solicitation retries"
	default 5
	---help---
	Send the Router solicitation this number of times before giving
	up and deciding that no router is going to provide an IP address.

	config ICMPv6_AUTOCONF_DELAYMSEC
	int "ICMPv6 router re-solicit delay"
	default 20
	---help---
	Wait this number of milliseconds before re-sending the Router
	Solicitation. This time should be related to the maximum
	round trip time on the network since it is basically the time from
	when an Router Solicitation is sent until the Router
	Advertisement is received.

	config ICMPv6_AUTOCONF_RDNSS
	bool "ICMPv6 handle RDNSS field in router advertise"
	default n
	---help---
	Handle the RDNSS field in the Router Advertisement and add it to
	netdb DNS Server.

	endif # NET_ICMPv6_AUTOCONF

	config NET_ICMPv6_ROUTER
	bool "Router Advertisement"
	default n
	---help---
	In a router-less environment, NuttX can be configured to provide a
	response to Router Solicitation messages and, hence, providing
	addressing to IPv6 nodes on the network.

	if NET_ICMPv6_ROUTER

	config NET_ICMPv6_ROUTER_LIFETIME
	int "Router Advertisement router lifetime in seconds"
	default 1800
	---help---
	Set the router lifetime for advertising as a default router.
	Set to 0 to only advertise autoconfiguration prefix without
	advertising as a router.

	config NET_ICMPv6_ROUTER_MANUAL
	bool "Manual router prefix"
	default n
	---help---
	Select this to set the advertised router prefix manually. Otherwise, it
	will be derived from the device IPv6 address and prefix length set in
	the netdev structure.

	if NET_ICMPv6_ROUTER_MANUAL

	config NET_ICMPv6_PREFLEN
	int "Prefix length"
	default 64
	range 0 128
	---help---
	The length (in bits) of the IPv6 address prefix. This is the number
	of MS bits under the network mask. The default of 64 would
	correspond to a network mask of:

	0xffff:0xffff:0xffff:0xffff:0x0000:0x0000:0x0000:0x0000.

	comment "Router Prefix"

	config NET_ICMPv6_PREFIX_1
	hex "[0]"
	default 0xfc00
	range 0x0 0xffff
	---help---
	This the IPv6 address prefix that will be provided in the IPv6 Router
	Advertisement message. This is the first of the 8-values. The
	default for all eight values is fc00::0.

	config NET_ICMPv6_PREFIX_2
	hex "[1]"
	default 0x0000
	range 0x0 0xffff
	---help---
	This the IPv6 address prefix that will be provided in the IPv6 Router
	Advertisement message. This is the second of the 8-values. The
	default for all eight values is fc00::0.

	config NET_ICMPv6_PREFIX_3
	hex "[2]"
	default 0x0000
	range 0x0 0xffff
	---help---
	This the IPv6 address prefix that will be provided in the IPv6 Router
	Advertisement message. This is the third of the 8-values. The
	default for all eight values is fc00::0.

	config NET_ICMPv6_PREFIX_4
	hex "[3]"
	default 0x0000
	range 0x0 0xffff
	---help---
	This the IPv6 address prefix that will be provided in the IPv6 Router
	Advertisement message. This is the fourth of the 8-values. The
	default for all eight values is fc00::0.

	config NET_ICMPv6_PREFIX_5
	hex "[4]"
	default 0x0000
	range 0x0 0xffff
	---help---
	This the IPv6 address prefix that will be provided in the IPv6 Router
	Advertisement message. This is the fifth of the 8-values. The
	default for all eight values is fc00::0.

	config NET_ICMPv6_PREFIX_6
	hex "[5]"
	default 0x0000
	range 0x0 0xffff
	---help---
	This the IPv6 address prefix that will be provided in the IPv6 Router
	Advertisement message. This is the sixth of the 8-values. The
	default for all eight values is fc00::0.

	config NET_ICMPv6_PREFIX_7
	hex "[6]"
	default 0x0000
	range 0x0 0xffff
	---help---
	This the IPv6 address prefix that will be provided in the IPv6 Router
	Advertisement message. This is the seventh of the 8-values. The
	default for all eight values is fc00::0.

	config NET_ICMPv6_PREFIX_8
	hex "[7]"
	default 0x0000
	range 0x0 0xffff
	---help---
	This the IPv6 address prefix that will be provided in the IPv6 Router
	Advertisement message. This is the last of the 8-values. The
	default for all eight values is fc00::0.

	config NET_ICMPv6_ROUTER_RDNSS
	bool "Fill the RDNSS into Router Advertisement"
	default n
	---help---
	Fill the RDNSS from the netdb DNS Server into the Router
	Advertisement.

	endif # NET_ICMPv6_ROUTER_MANUAL
	endif # NET_ICMPv6_ROUTER

	if NET_ICMPv6_SOCKET

	config NET_ICMPv6_PREALLOC_CONNS
	int "Preallocated ICMPv6 packet sockets"
	default 4
	---help---
	Number of ICMPv6 connections (all tasks).

	This number of connections will be pre-allocated during system boot.
	If dynamic connections allocation is enabled, more connections may
	be allocated at a later time, as the system needs them. Else this
	will be the maximum number of connections available to the system
	at all times.

	Set to 0 to disable (and rely only on dynamic allocations).

	config NET_ICMPv6_ALLOC_CONNS
	int "Dynamic ICMPv6 connections allocation"
	default 0
	---help---
	Dynamic memory allocations for ICMPv6.

	When set to 0 all dynamic allocations are disabled.

	When set to 1 a new connection will be allocated every time,
	and it will be free'd when no longer needed.

	Setting this to 2 or more will allocate the connections in
	batches (with batch size equal to this config). When a
	connection is no longer needed, it will be returned to the
	free connections pool, and it will never be deallocated!

	config NET_ICMPv6_MAX_CONNS
	int "Maximum number of ICMPv6 connections"
	default 0
	depends on NET_ICMPv6_ALLOC_CONNS > 0
	---help---
	If dynamic connections allocation is selected (NET_ICMPv6_ALLOC_CONNS > 0)
	this will limit the number of connections that can be allocated.

	This is useful in case the system is under very heavy load (or
	under attack), ensuring that the heap will not be exhausted.

	config NET_ICMPv6_NPOLLWAITERS
	int "Number of ICMPv6 poll waiters"
	default 1

	endif # NET_ICMPv6_SOCKET

	endif # NET_ICMPv6 && !NET_ICMPv6_NO_STACK
	endmenu # ICMPv6 Networking Support