68 lines
2.1 KiB
Plaintext
68 lines
2.1 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 "Raw Socket Support"
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config NET_PKT
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bool "Socket packet socket support"
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default n
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select NETDEV_IFINDEX
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---help---
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Enable or disable support for packet sockets.
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Packet sockets allow receiving and transmitting frames without
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a transport protocol in between. Frames received are copied into
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a packet socket tap before they enter the network. Data written into
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a packet socket will bypass the network altogether and be placed in
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the transmission buffer of the network interface driver.
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REVISIT: Currently only implemented for Ethernet.
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if NET_PKT
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config NET_PKT_PREALLOC_CONNS
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int "Preallocated packet sockets"
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default 1
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---help---
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Number of packet 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_PKT_ALLOC_CONNS
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int "Dynamic packet connections allocation"
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default 0
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---help---
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Dynamic memory allocations for packet sockets.
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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_PKT_MAX_CONNS
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int "Maximum number of packet connections"
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default 0
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depends on NET_PKT_ALLOC_CONNS > 0
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---help---
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If dynamic connections allocation is selected (NET_PKT_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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endif # NET_PKT
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endmenu # Raw Socket Support
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