[PATCH v2 0/5] net: ethernet: cortina: Fix RX budget accounting

[Linus Walleij <linusw@kernel.org>]

Finish RX updates before releasing NAPI ownership, report actual NAPI
work, charge dropped frames to the poll budget, and drive free-queue
refills from consumed RX descriptors.

Track RX drop state across descriptor chains so discarded frames are
counted exactly once.

Tested on the D-Link DIR-685.

Hi Sashiko, yes there are more latent issues I will get to them, but
my LLM thinks those are on the top of the list.

Assisted-by: LLM
Signed-off-by: Linus Walleij <linusw@kernel.org>
---
Changes in v2:
- Finish RX statistics and free-queue updates before NAPI completion.
- Enable RX interrupts only after successful NAPI completion.
- Drop AI slop renaming of received->work_done.
- Link to v1: https://patch.msgid.link/20260901-gemini-ethernet-fixes-v1-0-ee6b09675876@kernel.org

---
Linus Walleij (5):
      net: ethernet: cortina: Fix budget accounting
      net: ethernet: cortina: Finish RX updates before NAPI completion
      net: ethernet: cortina: Count dropped frames as NAPI work
      net: ethernet: cortina: Count RX drops once per frame
      net: ethernet: cortina: Count RX descriptors for freeq refill

 drivers/net/ethernet/cortina/gemini.c | 77 +++++++++++++++++++++--------------
 1 file changed, 47 insertions(+), 30 deletions(-)
---
base-commit: cee9395acd8043be0644b25c34bfa86623f2b935
change-id: 20260901-gemini-ethernet-fixes-e6d2e7c53c1b

Best regards,
--  
Linus Walleij <linusw@kernel.org>