457 lines
13 KiB
Plaintext
457 lines
13 KiB
Plaintext
#
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# For a description of the syntax of this configuration file,
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# see misc/tools/kconfig-language.txt.
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#
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config ARCH_HAVE_NET
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bool
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default n
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config ARCH_HAVE_PHY
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bool
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default n
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config NET
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bool "Networking support"
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default n
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select ARCH_HAVE_NET
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---help---
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Enable or disable all network features
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if NET
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config NET_NOINTS
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bool "Not interrupt driven"
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default n
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---help---
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NET_NOINT indicates that uIP is not called from the interrupt level.
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If NET_NOINTS is defined, critical sections will be managed with semaphores;
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Otherwise, it assumed that uIP will be called from interrupt level handling
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and critical sections will be managed by enabling and disabling interrupts.
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config NET_MULTIBUFFER
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bool "Use multiple device-side I/O buffers"
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default n
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---help---
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Traditionally, uIP has used a single buffer for all incoming and
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outgoing traffic. If this configuration is selected, then the
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driver can manage multiple I/O buffers and can, for example,
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be filling one input buffer while sending another output buffer.
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Or, as another example, the driver may support queuing of concurrent
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input/ouput and output transfers for better performance.
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config NET_PROMISCUOUS
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bool "Promiscuous mode"
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default n
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---help---
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Force the Ethernet driver to operate in promiscuous mode (if supported
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by the Ethernet driver).
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config NET_IPv6
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bool "IPv6"
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default n
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depends on EXPERIMENTAL
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---help---
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Build in support for IPv6. Not fully implemented.
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config NSOCKET_DESCRIPTORS
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int "Number of socket descriptor"
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default 8
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---help---
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Maximum number of socket descriptors per task/thread.
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config NET_NACTIVESOCKETS
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int "Max socket operations"
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default 16
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---help---
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Maximum number of concurrent socket operations (recv, send, etc.).
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Default: 16
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config NET_SOCKOPTS
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bool "Socket options"
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default n
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---help---
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Enable or disable support for socket options
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if NET_SOCKOPTS
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config NET_SOLINGER
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bool "SO_LINGER socket option"
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default n
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---help---
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Enable or disable support for the SO_LINGER socket option.
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endif # NET_SOCKOPTS
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config NET_BUFSIZE
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int "Network packet buffer size (MTU)"
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default 1294 if !NET_SLIP && NET_IPv6
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default 590 if !NET_SLIP && !NET_IPv6
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default 296 if NET_SLIP && !NET_IPv6
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---help---
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Packet buffer size. This size includes the TCP/UDP payload plus the
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size of TCP/UDP header, the IP header, and the Ethernet header
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(assuming that the Ethernet transport is used). This value is
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normally referred to as the MTU (Maximum Transmission Unit); the
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payload is the MSS (Maximum Segment Size).
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IPv4 hosts are required to be able to handle an MSS of at least
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536 octets, resulting in a minimum buffer size of 536+20+20+14 =
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590 (For SLIP 256+20+20 = 296).
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IPv6 hosts are required to be able to handle an MSS of 1220 octets,
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resulting in a minimum buffer size of of 1220+20+40+14 = 1294
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config NET_TCPURGDATA
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bool "Urgent data"
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default n
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---help---
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Determines if support for TCP urgent data notification should be
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compiled in. Urgent data (out-of-band data) is a rarely used TCP feature
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that is very seldom would be required.
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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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---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 uIP. Data written into a
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packet socket will bypass uIP altogether and be placed in the
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transmission buffer of the network interface driver.
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if NET_PKT
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config NET_PKT_CONNS
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int "Max packet sockets"
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default 1
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endif # NET_PKT
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endmenu # Packet Sockets
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menu "TCP/IP Networking"
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config NET_TCP
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bool "TCP/IP Networking"
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default n
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---help---
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TCP support on or off
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if NET_TCP
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config NET_TCP_CONNS
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int "Number of TCP/IP connections"
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default 8
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---help---
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Maximum number of TCP/IP connections (all tasks)
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config NET_MAX_LISTENPORTS
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int "Number of listening ports"
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default 20
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---help---
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Maximum number of listening TCP/IP ports (all tasks). Default: 20
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config NET_TCP_READAHEAD
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bool "Enable TCP/IP read-ahead buffering"
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default y
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---help---
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Read-ahead buffers allows buffering of TCP/IP packets when there is no
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receive in place to catch the TCP packet. In that case, the packet
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will be retained in the NuttX read-ahead buffers.
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You might want to disable TCP/IP read-ahead buffering on a highly
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memory constrained system that does not have any TCP/IP packet rate
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issues.
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if NET_TCP_READAHEAD
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config NET_TCP_READAHEAD_BUFSIZE
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int "TCP/IP read-ahead buffer size"
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default 1220 if !NET_SLIP && NET_IPv6
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default 536 if !NET_SLIP && !NET_IPv6
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default 256 if NET_SLIP && !NET_IPv6
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---help---
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Read-ahead buffers allows buffering of TCP/IP packets when there is no
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receive in place to catch the TCP packet. In that case, the packet
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will be retained in the NuttX read-ahead buffers.
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This setting specifies the size of one TCP/IP read-ahead buffer.
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This should best be a equal to the maximum packet payload size (MSS).
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Optimally, the size of the read-ahead buffer will should the maximum
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size of an incoming TCP packet payload (MSS). This MSS value is
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determined by NET_BUFSIZE minus the size of TCP, IP, and Ethernet
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headers (assuming you are using the Ethernet transport). IPv4 hosts
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are required to be able to handle an MSS of 536 octets and IPv6 hosts
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are required to be able to handle an MSS of 1220 octets.
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config NET_NTCP_READAHEAD_BUFFERS
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int "Number of TCP/IP read-ahead buffers"
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default 8
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---help---
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Read-ahead buffers allows buffering of TCP/IP packets when there is no
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receive in place to catch the TCP packet. In that case, the packet
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will be retained in the NuttX read-ahead buffers.
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This setting specifies the number of TCP/IP read-ahead buffers.
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endif # NET_TCP_READAHEAD
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config NET_TCP_WRITE_BUFFERS
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bool "Enable TCP/IP write buffering"
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default n
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---help---
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Write buffers allows buffering of ongoing TCP/IP packets, providing
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for higher performance, streamed output.
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You might want to disable TCP/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_TCP_WRITE_BUFFERS
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config NET_TCP_WRITE_BUFSIZE
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int "TCP/IP write buffer size"
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default 1220 if !NET_SLIP && NET_IPv6
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default 536 if !NET_SLIP && !NET_IPv6
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default 256 if NET_SLIP && !NET_IPv6
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---help---
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Write buffers allows buffering of ongoing TCP/IP packets, providing
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for higher performance, streamed output.
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The size of the write buffer will determine the maximum size of an
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outgoing TCP packet payload (MSS). This value should NOT exceed the
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maximum MSS which is determined by NET_BUFSIZE minus the size of
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TCP, IP, and Ethernet headers (assuming you are using the Ethernet
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transport). IPv4 hosts are required to be able to handle an MSS
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of 536 octets and IPv6 hosts are required to be able to handle an
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MSS of 1220 octets.
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This setting specifies the size of one TCP/IP write buffer. This
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should best be a equal to the maximum packet size (NET_BUFSIZE).
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config NET_NTCP_WRITE_BUFFERS
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int "Number of TCP/IP write buffers"
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default 8
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---help---
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Write buffers allows buffering of ongoing TCP/IP packets, providing
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for higher performance, streamed output.
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This setting specifies the number of TCP/IP write buffers.
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endif # NET_TCP_WRITE_BUFFERS
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config NET_TCP_RECVDELAY
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int "TCP Rx delay"
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default 0
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---help---
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If NET_TCP_READAHEAD_BUFFERS is undefined, then there will be no buffering
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of TCP/IP packets: Any TCP/IP packet received will be ACKed, but its contents
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will be dropped in the bit-bucket.
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One low-performance option is delay for a short period of time after a
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TCP/IP packet is received to see if another comes right behind it. Then
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the packet data from both can be combined. This option only makes since
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if performance is not an issue and you need to handle short bursts of
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small, back-to-back packets. The delay is in units of deciseconds.
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config NET_TCPBACKLOG
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bool "TCP/IP backlog support"
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default n
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---help---
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Incoming connections pend in a backlog until accept() is called.
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The size of the backlog is selected when listen() is called.
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config NET_TCP_SPLIT
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bool "Enable packet splitting"
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default n
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depends on !NET_TCP_WRITE_BUFFERS
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---help---
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send() will not return until the transfer has been ACKed by the
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recipient. But under RFC 1122, the host need not ACK each packet
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immediately; the host may wait for 500 MS before ACKing. This
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combination can cause very slow performance with small transfers are
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made to an RFC 1122 client. However, the RFC 1122 must ACK at least
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every second (odd) packet.
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This option enables logic to trick the RFC 1122 host be exploiting
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this last RFC 1122 requirement: If an odd number of packets were to
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be sent, then send() will split the last even packet to guarantee
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that an even number of packets will be sent and the RFC 1122 host
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will ACK the final packet immediately.
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if NET_TCP_SPLIT
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config NET_TCP_SPLIT_SIZE
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int "Split size threshold"
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default 40
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---help---
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Packets of this size or smaller than this will not be split.
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endif # NET_TCP_SPLIT
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config NET_SENDFILE
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bool "Optimized network sendfile()"
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default n
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---help---
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Support larger, higher performance sendfile() for transferring
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files out a TCP connection.
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endif # NET_TCP
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endmenu # TCP/IP Networking
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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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if NET_UDP
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config NET_UDP_CHECKSUMS
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bool "UDP checksums"
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default n
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---help---
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Enable/disable UDP checksum support
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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_RXAVAIL
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bool "Driver-based UDP backlog"
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default n
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---help---
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One problem with UDP communications is that, unlike TCP/IP, there is
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no backlog of UDP packets. So if you are listening at the precise
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moment that the UDP packet is sent, it will not be received. This
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is not incompatible with the properties of UDP, but can result in
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bad performance if packets are missed, time out, and are resent.
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Some Ethernet controllers have built-in RAM and the drivers can
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support retention of UDP packets in that RAM. If the drivers
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supports such a capability, this option may be enabled to use it.
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NOTE: If this option is enabled, the driver must support the
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rxavail() method in the uip_driver_s structure.
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endif # NET_UDP
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endmenu
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source "net/icmp/Kconfig"
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source "net/igmp/Kconfig"
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config NET_STATISTICS
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bool "Collect network statistics"
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default n
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---help---
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uIP statistics on or off
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config NET_RECEIVE_WINDOW
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int "Receive window size"
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default 1220 if !NET_SLIP && NET_IPv6
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default 536 if !NET_SLIP && !NET_IPv6
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default 256 if NET_SLIP && !NET_IPv6
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---help---
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The size of the advertised receiver's window. Should be set low
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(i.e., to the size of the MSS) if the application is slow to process
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incoming data, or high (32768 bytes) if the application processes
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data quickly.
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source "net/arp/Kconfig"
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source "net/iob/Kconfig"
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config NET_ROUTE
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bool "Routing table suport"
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default n
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---help---
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Build in support for a routing table. See include/net/route.h
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config NET_MAXROUTES
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int "Routing table size"
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default 4
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depends on NET_ROUTE
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---help---
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The size of the routing table (in entries).
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config NET_MULTICAST
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bool "Multi-cast Tx support"
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default n
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---help---
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Outgoing multi-cast address support
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# Select Transport (should be a choice)
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config NET_ETHERNET
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bool
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default y if !NET_SLIP
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default n if NET_SLIP
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---help---
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If NET_SLIP is not selected, then Ethernet will be used (there is
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no need to define anything special in the configuration file to use
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Ethernet -- it is the default).
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config NET_SLIP
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bool "SLIP support"
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default n
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---help---
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Enables building of the SLIP driver. SLIP requires
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at least one IP protocol selected and the following additional
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network settings: NET_NOINTS and NET_MULTIBUFFER.
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NET_BUFSIZE *must* be set to 296. Other optional configuration
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settings that affect the SLIP driver: NET_STATISTICS.
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Default: Ethernet
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SLIP supports point-to-point IP communications over a serial port.
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The default data link layer for uIP is Ethernet. If NET_SLIP is
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defined in the NuttX configuration file, then SLIP will be supported.
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The basic differences between the SLIP and Ethernet configurations is
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that when SLIP is selected:
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* The link level header (that comes before the IP header) is omitted.
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* All MAC address processing is suppressed.
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* ARP is disabled.
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If NET_SLIP is not selected, then Ethernet will be used (there is
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no need to define anything special in the configuration file to use
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Ethernet -- it is the default).
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if NET_SLIP
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config SLIP_NINTERFACES
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int "Number of SLIP interfaces"
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default 1
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---help---
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Selects the number of physical SLIP
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interfaces to support.
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Default: 1
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config SLIP_STACKSIZE
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int "SLIP stack size"
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default 2048
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---help---
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Select the stack size of the SLIP RX and TX tasks. Default: 2048
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config SLIP_DEFPRIO
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int "SLIP priority"
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default 128
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---help---
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The priority of the SLIP RX and TX tasks. Default: 128
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endif # NET_SLIP
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endif # NET
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