[PATCH net-next v3 0/3] ethtool: expose PHY receive totals

[James Hilliard]

Some PHYs count received frames and bytes including errored traffic. Add
explicit receive-total counters to the generic PHY statistics interface
alongside its counters for successfully received traffic.

Use the new counters to expose ACx00 receive statistics through the phydev
group. Accumulate the hardware counters in 64-bit software totals, retain
them across reset and power transitions, and return cached snapshots to
ethtool.

Convert DP83TG720's existing RX packet statistic to the receive-total
counter, matching its documented inclusion of packets with errors.

Assisted-by: Codex:gpt-6-astra
Signed-off-by: James Hilliard <james.hilliard1@xxxxxxxxx>
---
Changes in v3:
- Add generic PHY receive-total packet and byte counters in a preparatory
  patch, retaining the existing successful-traffic counters and their IDs.
- Report ACx00 packet and byte totals through the new fields, leaving
  successful-only counters unset.
- Convert DP83TG720's inclusive RX packet count to the new total field.
- Bound coherent-counter sampling to three attempts and skip unstable
  snapshots without making phylib take the link down.
- Reject out-of-range byte samples before updating the hardware baseline
  or accumulated totals, retaining MDIO and page-restoration errors.
- Rebase onto current net-next.
- Link to v2: https://patch.msgid.link/20261102-submit-acx00-phy-stats-v1-v2-1-3c8a664407c1@xxxxxxxxx

Changes in v2:
- Rebase onto current net-next and repost after the merge window.
- No functional changes.
- Link to v1: https://patch.msgid.link/20261025-submit-acx00-phy-stats-v1-v1-1-d3d461e46db0@xxxxxxxxx

---
James Hilliard (3):
      ethtool: add PHY receive frame and byte totals
      net: phy: acx00: report receive statistics
      net: phy: dp83tg720: report inclusive RX packet totals

 Documentation/networking/ethtool-netlink.rst |  16 ++-
 drivers/net/phy/dp83tg720.c                  |   2 +-
 drivers/net/phy/xpowers/acx00.c              | 168 ++++++++++++++++++++++++++-
 include/linux/ethtool.h                      |   6 +
 include/uapi/linux/ethtool_netlink.h         |   2 +
 net/ethtool/stats.c                          |   8 +-
 6 files changed, 196 insertions(+), 6 deletions(-)
---
base-commit: e281e85235cfc2acd080093d5deced427c4c9856
change-id: 20261024-submit-acx00-phy-stats-v1-d838f77444e8

Best regards,
--  
James Hilliard <james.hilliard1@xxxxxxxxx>