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change: bump max sockets in lwip Kconfig

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Tested under ESP32S3, running 50 tasks, each with a client, and a server
listening to one client, totalizing 150 sockets/files open, forwarding
data from PPP to Ethernet and vice versa.
Reasoning for 255 total sockets/files is VFS local_fd_t being a uint8_t.
Since FD_SETSIZE is defined at tool level, a CMakeLists user definition
is needed in cases above 64 (the default value).

Merges https://github.com/espressif/esp-idf/pull/13866
This commit is contained in:
Rodrigo Silva 2024-05-27 13:47:27 -04:00 committed by David Čermák
parent b1c8757b9f
commit 48295d31ca
2 changed files with 8 additions and 3 deletions
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10
components/lwip/Kconfig
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@ -135,13 +135,19 @@ menu "LWIP"
config LWIP_MAX_SOCKETS
int "Max number of open sockets"
range 1 16
range 1 253
default 10
help
The practical maximum limit is
determined by available heap memory at runtime.
Sockets take up a certain amount of memory, and allowing fewer
sockets to be open at the same time conserves memory. Specify
the maximum amount of sockets here. The valid value is from 1
to 16.
to 253. If using value above 61, update CMakeLists defining
FD_SETSIZE to the number of sockets used plus the
expected open files (minimum of +3 for stdout, stderr and stdin).
config LWIP_USE_ONLY_LWIP_SELECT
bool "Support LWIP socket select() only (DEPRECATED)"

1
tools/ci/check_public_headers_exceptions.txt
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@ -60,7 +60,6 @@ components/json/cJSON/
components/spiffs/include/spiffs_config.h
components/unity/unity/src/unity_internals.h
components/unity/unity/extras/
components/unity/include/unity_config.h
components/unity/include/unity_test_runner.h