From 0b2cea6e9f757191be0bfc83a6fe3ed15981ccf2 Mon Sep 17 00:00:00 2001 From: Liu Zhi Fu Date: Wed, 16 Nov 2016 21:11:17 +0800 Subject: [PATCH] lwip: modify menuconfig comments according to review --- components/lwip/Kconfig | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) diff --git a/components/lwip/Kconfig b/components/lwip/Kconfig index 90b7c5b5c7..7661fe6cb7 100644 --- a/components/lwip/Kconfig +++ b/components/lwip/Kconfig @@ -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" -- 2.40.0