fef255e5be
Squashed commit of the following:
net/udp: Address most of the issues with UDP write buffering. There is a remaining issue with handling one network going down in a multi-network environment. None of this has been test but it is certainly ready for test. Hence, the feature is marked EXPERIMENTAL.
net/udp: Some baby steps toward a corrected write buffering design.
net/udp: Remove pesky write buffer macros.
Eliminate trailing space at the end of lines.
net/udp: A little more UDP write buffering logic. Still at least on big gaping hole in the design.
net/udp: Undefined CONFIG_NET_SENDTO_TIMEOUT.
net/udp: Crude, naive port of the TCP write buffering logic into UDP. This commit is certainly non-functional and is simply a starting point for the implementatin of UDP write buffering.
net/udp: Rename udp/udp_psock_sendto.c udp/udp_psock_sendto_unbuffered.c.
101 lines
2.6 KiB
Plaintext
101 lines
2.6 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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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_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_CONNS
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int "Number of UDP sockets"
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default 8
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---help---
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The maximum amount of open concurrent UDP sockets
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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_READAHEAD
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bool "Enable UDP/IP read-ahead buffering"
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default y
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select NET_READAHEAD
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select MM_IOB
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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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select MM_IOB
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depends on EXPERIMENTAL
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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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endif # NET_UDP && !NET_UDP_NO_STACK
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endmenu # UDP Networking
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