kernel/drivers/net/ethernet/amd/xgbe/xgbe.h, branch linux-rolling-stable

amd-xgbe: prevent CRC errors during RX adaptation with AN disabled

2026-03-19T15:14:53Z

[ Upstream commit 27a4dd0c702b3b2b9cf2c045d100cc2fe8720b81 ] When operating in 10GBASE-KR mode with auto-negotiation disabled and RX adaptation enabled, CRC errors can occur during the RX adaptation process. This happens because the driver continues transmitting and receiving packets while adaptation is in progress. Fix this by stopping TX/RX immediately when the link goes down and RX adaptation needs to be re-triggered, and only re-enabling TX/RX after adaptation completes and the link is confirmed up. Introduce a flag to track whether TX/RX was disabled for adaptation so it can be restored correctly. This prevents packets from being transmitted or received during the RX adaptation window and avoids CRC errors from corrupted frames. The flag tracking the data path state is synchronized with hardware state in xgbe_start() to prevent stale state after device restarts. This ensures that after a restart cycle (where xgbe_stop disables TX/RX and xgbe_start re-enables them), the flag correctly reflects that the data path is active. Fixes: 4f3b20bfbb75 ("amd-xgbe: add support for rx-adaptation") Signed-off-by: Raju Rangoju Link: https://patch.msgid.link/20260306111629.1515676-3-Raju.Rangoju@amd.com Signed-off-by: Paolo Abeni Signed-off-by: Sasha Levin

amd-xgbe: fix sleep while atomic on suspend/resume

2026-03-12T11:09:53Z

[ Upstream commit e2f27363aa6d983504c6836dd0975535e2e9dba0 ] The xgbe_powerdown() and xgbe_powerup() functions use spinlocks (spin_lock_irqsave) while calling functions that may sleep: - napi_disable() can sleep waiting for NAPI polling to complete - flush_workqueue() can sleep waiting for pending work items This causes a "BUG: scheduling while atomic" error during suspend/resume cycles on systems using the AMD XGBE Ethernet controller. The spinlock protection in these functions is unnecessary as these functions are called from suspend/resume paths which are already serialized by the PM core Fix this by removing the spinlock. Since only code that takes this lock is xgbe_powerdown() and xgbe_powerup(), remove it completely. Fixes: c5aa9e3b8156 ("amd-xgbe: Initial AMD 10GbE platform driver") Signed-off-by: Raju Rangoju Link: https://patch.msgid.link/20260302042124.1386445-1-Raju.Rangoju@amd.com Signed-off-by: Jakub Kicinski Signed-off-by: Sasha Levin

amd-xgbe: add ethtool split header selftest

2025-11-06T12:38:11Z

Adds support for ethtool split header selftest. Performs UDP and TCP check to ensure split header selft test works for both packet types. Signed-off-by: Raju Rangoju Reviewed-by: Maxime Chevallier Link: https://patch.msgid.link/20251031111555.774425-4-Raju.Rangoju@amd.com Signed-off-by: Paolo Abeni

amd-xgbe: introduce support ethtool selftest

2025-11-06T12:38:11Z

Add support for ethtool selftest for MAC loopback. This includes the sanity check and helps in finding the misconfiguration of HW. Uses the existing selftest infrastructure to create test packets. Signed-off-by: Raju Rangoju Reviewed-by: Maxime Chevallier Link: https://patch.msgid.link/20251031111555.774425-2-Raju.Rangoju@amd.com Signed-off-by: Paolo Abeni

amd-xgbe: convert to ndo_hwtstamp callbacks

2025-10-21T00:30:26Z

Convert driver to use .ndo_hwtstamp_get()/.ndo_hwtstamp_set() callbacks. .ndo_eth_ioctl() becomes empty function, remove it. Reviewed-by: Simon Horman Reviewed-by: Jacob Keller Signed-off-by: Vadim Fedorenko Link: https://patch.msgid.link/20251016152515.3510991-4-vadim.fedorenko@linux.dev Signed-off-by: Jakub Kicinski

amd-xgbe: Add PPS periodic output support

2025-09-14T21:29:26Z

Add support for hardware PPS (Pulse Per Second) output to the AMD XGBE driver. The implementation enables flexible periodic output mode, exposing it via the PTP per_out interface. The driver supports configuring PPS output using the standard PTP subsystem, allowing precise periodic signal generation for time synchronization applications. The feature has been verified using the testptp tool and oscilloscope. Signed-off-by: Raju Rangoju Link: https://patch.msgid.link/20250909113143.1364477-1-Raju.Rangoju@amd.com Signed-off-by: Jakub Kicinski

amd-xgbe: Configure and retrieve 'tx-usecs' for Tx coalescing

2025-08-19T00:50:55Z

Ethtool has advanced with additional configurable options, but the current driver does not support tx-usecs configuration using Ethtool. Add support to configure and retrieve 'tx-usecs' using ethtool, which specifies the wait time before servicing an interrupt for Tx coalescing. Signed-off-by: Vishal Badole Acked-by: Shyam Sundar S K Link: https://patch.msgid.link/20250816141941.126054-1-Vishal.Badole@amd.com Signed-off-by: Jakub Kicinski

amd-xgbe: add hardware PTP timestamping support

2025-07-21T23:40:15Z

Adds complete support for hardware-based PTP (IEEE 1588) timestamping to the AMD XGBE driver. - Initialize and configure the MAC PTP registers based on link speed and reference clock. - Support both 50MHz and 125MHz PTP reference clocks. - Update the driver interface and version data to support PTP clock frequency selection. Signed-off-by: Raju Rangoju Link: https://patch.msgid.link/20250718185628.4038779-3-Raju.Rangoju@amd.com Signed-off-by: Jakub Kicinski

and-xgbe: remove the abstraction for hwptp

2025-07-21T23:40:15Z

Remove the hwptp abstraction and associated callbacks from the struct xgbe_hw_if {}. The callback structure was only ever assigned a single function, without null checks. This cleanup inlines the logic and moves all the hwtstamp realted code a separate file, improving readability and maintainance. Signed-off-by: Raju Rangoju Link: https://patch.msgid.link/20250718185628.4038779-2-Raju.Rangoju@amd.com Signed-off-by: Jakub Kicinski

Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

2025-07-04T06:03:18Z

Cross-merge networking fixes after downstream PR (net-6.16-rc5). No conflicts. No adjacent changes. Signed-off-by: Paolo Abeni