netdev - [PATCH net-next v2 0/4] amd-xgbe: add ARP offload and RSS self-tests

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Message-ID: <20260203145658.2936778-1-Raju.Rangoju@amd.com>
Date: Tue, 3 Feb 2026 20:26:54 +0530
From: Raju Rangoju <Raju.Rangoju@....com>
To: <netdev@...r.kernel.org>
CC: <horms@...nel.org>, <pabeni@...hat.com>, <kuba@...nel.org>,
	<edumazet@...gle.com>, <davem@...emloft.net>, <andrew+netdev@...n.ch>,
	<linux-kernel@...r.kernel.org>, <Shyam-sundar.S-k@....com>, Raju Rangoju
	<Raju.Rangoju@....com>
Subject: [PATCH net-next v2 0/4] amd-xgbe: add ARP offload and RSS self-tests

This series adds ARP offload support and ethtool self-tests for the
AMD XGBE 10 Gigabit Ethernet driver.

Patch 1 is a build fix for randconfig coverage.

Patch 2 adds hardware ARP offload functionality that allows the MAC
to automatically respond to ARP requests without CPU intervention,
reducing system latency and power consumption during suspend/resume
and normal operation.

Patches 3 and 4 add ethtool self-tests for ARP offload and RSS
functionality respectively, allowing users to verify these hardware
features are working correctly via 'ethtool -t <interface>'.

The tests are integrated into the existing XGBE self-test framework
that already includes MAC loopback, PHY loopback, split header, and
jumbo frame tests.

Test results example:
  $ ethtool -t eth0
  The test result is PASS
  The test extra info:
  MAC Loopback       0
  PHY Loopback       0
  Split Header       0
  Jumbo Frame        0
  ARP Offload        0
  RSS                0

Changes since v1:
- Resubmitting to net-next as this was mistakenly sent to net previously.
- Fix INET=n build breakage reported by kernel test robot
- Ensure ARP self-test cleanup is safe on all error paths (no dangling
  packet handler).
- Use link-local IPs for self-tests to avoid interfering with real
  network configuration.

Raju Rangoju (4):
  amd-xgbe: do not select NET_SELFTESTS when INET is disabled
  amd-xgbe: add hardware ARP offload support
  amd-xgbe: add ARP offload ethtool self-test
  amd-xgbe: add RSS ethtool self-test

 drivers/net/ethernet/amd/Kconfig              |   2 +-
 drivers/net/ethernet/amd/xgbe/xgbe-common.h   |   3 +
 drivers/net/ethernet/amd/xgbe/xgbe-dev.c      |  24 +++
 drivers/net/ethernet/amd/xgbe/xgbe-selftest.c | 153 +++++++++++++++++-
 drivers/net/ethernet/amd/xgbe/xgbe.h          |   4 +
 include/net/selftests.h                       |   1 +
 6 files changed, 185 insertions(+), 2 deletions(-)

-- 
2.34.1