On 11-Jun-25 3:52 PM, Vitaly Lifshits wrote:
I226 devices advertise support for the PCI-E link L1.2 substate. However, due to a hardware limitation, the exit latency from this low-power state is longer than the packet buffer can tolerate under high traffic conditions. This can lead to packet loss and degraded performance. To mitigate this, disable the L1.2 substate. The increased power draw between L1.1 and L1.2 is insignificant. Link: https://lore.kernel.org/intel-wired-lan/[email protected] Signed-off-by: Vitaly Lifshits <[email protected]> Fixes: 43546211738e ("igc: Add new device ID's") Reviewed-by: Aleksandr Loktionov <[email protected]> --- drivers/net/ethernet/intel/igc/igc_main.c | 10 ++++++++++ 1 file changed, 10 insertions(+)
Tested-by: Mor Bar-Gabay <[email protected]>
