FelipeMdeO opened a new pull request, #20156: URL: https://github.com/apache/nuttx/pull/20156
## Summary `esp_openeth_initialize()` (`arch/xtensa/src/common/espressif/esp_openeth.c`) attaches the MAC interrupt with `esp_setup_irq()` but never calls `up_enable_irq(OPENETH_IRQ_MAC)`, unlike every other Espressif driver in this tree. Left masked, `openeth_isr_handler()` never runs and received frames are only picked up when the netdev work thread happens to run for some other reason (a transmit) — a guest can send but not really receive. Also fixes `openeth_ifdown()`, which calls `openeth_enable()` right under a comment that says "Disable TX and RX"; it should call `openeth_disable()`. Board-independent code, and `open_eth` only exists as a QEMU peripheral, so there is no real-hardware regression risk. ## Impact Fixes network RX on the `esp32s3` QEMU machine (`open_eth` NIC). No impact on real hardware, since this code path is QEMU-only. ## Testing Confirmed with a GDB breakpoint counter on `openeth_isr_handler()` under QEMU's `esp32s3` machine: zero hits before the fix, dozens after. With the interrupt enabled, TCP retransmits over a fixed test window dropped from 86 to 4. `tools/checkpatch.sh` passes clean. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
