perf(esp32): move WiFi statics from SRAM2 to DRAM1 (~14 KB) - #56
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Place the RX ring buffer in a .rxring section and ISR/timer arrays in a .wifibss section, both mapped to SRAM1 (DRAM1) by the ESP32 linker script, and then guard the DMA relocation tables. On ESP32 this frees ~14 KB of SRAM2 for the Go GC heap: - RX ring (6 × 1602 B): ~9.6 KB - DMA tables compiled out: ~1.9 KB - ISR + timer arrays: ~2.8 KB Signed-off-by: deadprogram <[email protected]>
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Signed-off-by: deadprogram <[email protected]>
Wire xnet.StackConfig.AcceptIPv4Broadcast through espradio.StackConfig so AP-mode stacks accept IPv4 broadcast destinations. Required for DHCP server to receive client Discovers/Requests sent to 255.255.255.255. Enable it in netlink/ap.go and examples/ap. Signed-off-by: deadprogram <[email protected]>
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Thank you for review @soypat now merging! |
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Place the RX ring buffer in a .rxring section and ISR/timer arrays in a .wifibss section, both mapped to SRAM1 (DRAM1) by the ESP32 linker script, and then guard the DMA relocation tables.
On ESP32 this frees ~14 KB of SRAM2 for the Go GC heap:
Requires that tinygo-org/tinygo#5555 be merged, due to needing the additional linker symbols.
With this PR there is enough memory for ESP32 to use
net/httplike the other currently supported processors. Here is thewebserverexample running on ESP32: