145 lines
4.3 KiB
Plaintext
145 lines
4.3 KiB
Plaintext
#
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# For a description of the syntax of this configuration file,
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# see the file kconfig-language.txt in the NuttX tools repository.
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#
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menu "UDP Networking"
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config NET_UDP
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bool "UDP Networking"
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default n
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select NET_READAHEAD if !NET_UDP_NO_STACK
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depends on NET
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---help---
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Enable or disable UDP networking support.
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config NET_UDP_NO_STACK
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bool "Disable UDP/IP Stack"
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default n
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select NET_UDP
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---help---
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Build without UDP/IP stack even if UDP networking support enabled.
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if NET_UDP && !NET_UDP_NO_STACK
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config NET_BROADCAST
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bool "UDP broadcast Rx support"
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default n
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---help---
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Incoming UDP broadcast support
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config NET_UDP_CHECKSUMS
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bool "UDP checksums"
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default y if NET_IPv6
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default n if !NET_IPv6
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---help---
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Enable/disable UDP checksum support. UDP checksum support is
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REQUIRED for IPv6.
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config NET_UDP_PREALLOC_CONNS
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int "Preallocated UDP sockets"
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default 8
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---help---
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Number of UDP connections (all tasks).
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This number of connections will be pre-allocated during system boot.
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If dynamic connections allocation is enabled, more connections may
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be allocated at a later time, as the system needs them. Else this
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will be the maximum number of connections available to the system
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at all times.
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Set to 0 to disable (and rely only on dynamic allocations).
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config NET_UDP_ALLOC_CONNS
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int "Dynamic UDP connections allocation"
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default 0
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---help---
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Dynamic memory allocations for UDP.
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When set to 0 all dynamic allocations are disabled.
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When set to 1 a new connection will be allocated every time,
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and it will be free'd when no longer needed.
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Setting this to 2 or more will allocate the connections in
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batches (with batch size equal to this config). When a
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connection is no longer needed, it will be returned to the
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free connections pool, and it will never be deallocated!
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config NET_UDP_MAX_CONNS
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int "Maximum number of UDP connections"
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default 0
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depends on NET_UDP_ALLOC_CONNS > 0
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---help---
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If dynamic connections allocation is selected (NET_UDP_ALLOC_CONNS > 0)
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this will limit the number of connections that can be allocated.
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This is useful in case the system is under very heavy load (or
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under attack), ensuring that the heap will not be exhausted.
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config NET_UDP_NPOLLWAITERS
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int "Number of UDP poll waiters"
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default 1
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config NET_UDP_WRITE_BUFFERS
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bool "Enable UDP/IP write buffering"
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default n
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select NET_WRITE_BUFFERS
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---help---
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Write buffers allows buffering of ongoing UDP/IP packets, providing
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for higher performance, streamed output.
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You might want to disable UDP/IP write buffering on a highly memory
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memory constrained system where there are no performance issues.
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if NET_UDP_WRITE_BUFFERS
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config NET_UDP_NWRBCHAINS
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int "Number of pre-allocated I/O buffer chain heads"
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default 8
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---help---
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These tiny nodes are used as "containers" to support queuing of
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UDP write buffers. This setting will limit the number of UDP write
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operations that can be "in-flight" at any give time. So a good
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choice for this value would be the same as the maximum number of
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UDP connections.
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config NET_UDP_WRBUFFER_DEBUG
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bool "Force write buffer debug"
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default n
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depends on DEBUG_FEATURES
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select IOB_DEBUG
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---help---
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This option will force debug output from UDP write buffer logic,
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even without network debug output. This is not normally something
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that would want to do but is convenient if you are debugging the
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write buffer logic and do not want to get overloaded with other
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network-related debug output.
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config NET_UDP_WRBUFFER_DUMP
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bool "Force write buffer dump"
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default n
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depends on DEBUG_NET || NET_UDP_WRBUFFER_DEBUG
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select IOB_DEBUG
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---help---
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Dump the contents of the write buffers. You do not want to do this
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unless you really want to analyze the write buffer transfers in
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detail.
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endif # NET_UDP_WRITE_BUFFERS
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config NET_UDP_NOTIFIER
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bool "Support UDP read-ahead notifications"
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default n
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depends on SCHED_WORKQUEUE
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select WQUEUE_NOTIFIER
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---help---
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Enable building of UDP read-ahead notifier logic that will execute a
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worker function on the low priority work queue when read-ahead data
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is available. This is a general purpose notifier, but was
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developed specifically to support poll() logic where the poll must
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wait for read-ahead data to become available.
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endif # NET_UDP && !NET_UDP_NO_STACK
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endmenu # UDP Networking
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