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lwip: modify menuconfig comments according to review

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This commit is contained in:
Liu Zhi Fu 2016-11-16 21:11:17 +08:00
parent 69dbc36a1c
commit 0b2cea6e9f
1 changed files with 8 additions and 3 deletions
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11
components/lwip/Kconfig
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@ -6,9 +6,14 @@ config L2_TO_L3_COPY
help
If this feature is enabled, then all traffic from layer2(WIFI Driver)
to layer3(LWIP stack) will make a copy, the layer2 buffer will be
freed and the copy will be sent to layer3. Please make sure you fully
understand this feature before you enable this feature.
freed and the copy will be sent to layer3. Please be notified that the
total layer2 receiving buffer is fixed and ESP32 currently supports 25
layer2 receiving buffer, when layer2 buffer runs out of memory, then the
incoming packets will be dropped in hardware. The layer3 buffer is
allocated from the heap, so the total layer3 receiving buffer depends
on the available heap size, when heap runs out of memory, no copy will
be sent to layer3 and packet will be dropped in layer2. Please make sure
you fully understand the impact of this feature before enabling it.
config LWIP_MAX_SOCKETS
int "Max number of open sockets"