espressif/esp-idf
1
0
Fork 1
mirror of https://github.com/espressif/esp-idf.git synced 2025-08-08 07:04:32 +02:00
Code Issues Packages Projects Releases Wiki Activity

doc: Add description for CONFIG_LWIP_IPV6 in api-guides

Browse Source
This commit is contained in:
yuanjm
2021-02-03 14:37:28 +08:00
parent f8d27ebd76
commit f430e54c5a
1 changed files with 1 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
docs/en/api-guides/lwip.rst
View File

@@ -373,6 +373,7 @@ Most lwIP RAM usage is on-demand, as RAM is allocated from the heap as needed. T
- Reducing :ref:`CONFIG_LWIP_MAX_SOCKETS` reduces the maximum number of sockets in the system. This will also cause TCP sockets in the ``WAIT_CLOSE`` state to be closed and recycled more rapidly (if needed to open a new socket), further reducing peak RAM usage.
- Reducing :ref:`CONFIG_LWIP_TCPIP_RECVMBOX_SIZE`, :ref:`CONFIG_LWIP_TCP_RECVMBOX_SIZE` and :ref:`CONFIG_LWIP_UDP_RECVMBOX_SIZE` reduce memory usage at the expense of throughput, depending on usage.
- Disable :ref:`CONFIG_LWIP_IPV6` can save about 39 KB for firmware size and 2KB RAM when system power up and 7KB RAM when TCPIP stack running. If there is no requirement for supporting IPV6 then it can be disabled to save flash and RAM footprint.
If using Wi-Fi, please also refer to :ref:`wifi-buffer-usage`.