Chapter 2. API Reference
CONFIG_LWIP_TCPIP_TASK_STACK_SIZE
TCP/IP Task Stack Size
Found in: Component config > LWIP
Configure TCP/IP task stack size, used by LWIP to process multi-threaded TCP/IP operations. Setting
this stack too small will result in stack overflow crashes.
Range:
• from 2048 to 65536
Default value:
• 3072
CONFIG_LWIP_TCPIP_TASK_AFFINITY
TCP/IP task affinity
Found in: Component config > LWIP
Allows setting LwIP tasks affinity, i.e. whether the task is pinned to CPU0, pinned to CPU1, or allowed
to run on any CPU. Currently this applies to “TCP/IP”task and “Ping”task.
Available options:
• No affinity (LWIP_TCPIP_TASK_AFFINITY_NO_AFFINITY)
• CPU0 (LWIP_TCPIP_TASK_AFFINITY_CPU0)
• CPU1 (LWIP_TCPIP_TASK_AFFINITY_CPU1)
CONFIG_LWIP_PPP_SUPPORT
Enable PPP support (new/experimental)
Found in: Component config > LWIP
Enable PPP stack. Now only PPP over serial is possible.
PPP over serial support is experimental and unsupported.
Default value:
• No (disabled)
Contains:
• CONFIG_LWIP_PPP_ENABLE_IPV6
CONFIG_LWIP_PPP_ENABLE_IPV6
Enable IPV6 support for PPP connections (IPV6CP)
Found in: Component config > LWIP > CONFIG_LWIP_PPP_SUPPORT
Enable IPV6 support in PPP for the local link between the DTE (processor) and DCE (modem). There
are some modems which do not support the IPV6 addressing in the local link. If they are requested for
IPV6CP negotiation, they may time out. This would in turn fail the configuration for the whole link. If
your modem is not responding correctly to PPP Phase Network, try to disable IPV6 support.
Default value:
• Yes (enabled) if CONFIG_LWIP_PPP_SUPPORT && CONFIG_LWIP_IPV6
CONFIG_LWIP_IPV6_MEMP_NUM_ND6_QUEUE
Max number of IPv6 packets to queue during MAC resolution
Found in: Component config > LWIP
Config max number of IPv6 packets to queue during MAC resolution.
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