esp8266: Increase MSS to 1460 but reduce window size to 2 x MSS

UniFi have trouble forwarding packets in the AP -> ESP direction when MSS is set to 536.
cesanta · Feb 20, 2021 · 77f8472 · 77f8472
1 parent 12db6d0
commit 77f8472
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diff --git a/platforms/esp8266/Makefile.build b/platforms/esp8266/Makefile.build
@@ -164,9 +164,9 @@ MEMORY_FLAGS = -DFS_MAX_OPEN_FILES=5
 .PHONY: all clean
 
 # NB: These setting must match ones used during build of the LwIP library during Docker image build.
-LWIP_CFLAGS = -DTCP_MSS=536 -DTCP_MSL=5000 -DLWIP_FEATURES=1 -DLWIP_IPV6=0 -DLWIP_COMPAT_SOCKETS=0 \
+LWIP_CFLAGS = -DTCP_MSS=1460 -DTCP_MSL=5000 -DLWIP_FEATURES=1 -DLWIP_IPV6=0 -DLWIP_COMPAT_SOCKETS=0 \
               -I$(MGOS_PATH)/include
-LIBS += -llwip2-536-feat
+LIBS += -llwip2-1460-feat
 IPATH += /opt/Espressif/xtensa-lx106-elf/xtensa-lx106-elf/sysroot/usr/include/lwip2
 
 MGOS_CFLAGS = -DMGOS_APP=\"$(APP)\" \

diff --git a/platforms/esp8266/sdk.version b/platforms/esp8266/sdk.version
@@ -1 +1 @@
-docker.io/mgos/esp8266-build:3.0.0_158bb7a5-r1
+docker.io/mgos/esp8266-build:3.0.4_158bb7a5-r1