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authorAleksandr Loktionov <aleksandr.loktionov@intel.com>2025-01-07 01:19:20 +0300
committerJakub Kicinski <kuba@kernel.org>2025-01-08 05:16:02 +0300
commit07af482e646539d3cc12bc85040fe02f39ae3761 (patch)
treed0c2e5f065f9d96c55cd83b289ecf0c1211eedc5 /tools/testing/selftests/drivers/net/lib/py/env.py
parent35f715cb77c3cb6e2033e71bf518b30705ab95ba (diff)
downloadlinux-07af482e646539d3cc12bc85040fe02f39ae3761.tar.xz
i40e: add ability to reset VF for Tx and Rx MDD events
Implement "mdd-auto-reset-vf" priv-flag to handle Tx and Rx MDD events for VFs. This flag is also used in other network adapters like ICE. Usage: - "on" - The problematic VF will be automatically reset if a malformed descriptor is detected. - "off" - The problematic VF will be disabled. In cases where a VF sends malformed packets classified as malicious, it can cause the Tx queue to freeze, rendering it unusable for several minutes. When an MDD event occurs, this new implementation allows for a graceful VF reset to quickly restore operational state. Currently, VF queues are disabled if an MDD event occurs. This patch adds the ability to reset the VF if a Tx or Rx MDD event occurs. It also includes MDD event logging throttling to avoid dmesg pollution and unifies the format of Tx and Rx MDD messages. Note: Standard message rate limiting functions like dev_info_ratelimited() do not meet our requirements. Custom rate limiting is implemented, please see the code for details. Co-developed-by: Jan Sokolowski <jan.sokolowski@intel.com> Signed-off-by: Jan Sokolowski <jan.sokolowski@intel.com> Co-developed-by: Padraig J Connolly <padraig.j.connolly@intel.com> Signed-off-by: Padraig J Connolly <padraig.j.connolly@intel.com> Signed-off-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com> Reviewed-by: Michal Schmidt <mschmidt@redhat.com> Tested-by: Rafal Romanowski <rafal.romanowski@intel.com> Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com> Link: https://patch.msgid.link/20250106221929.956999-13-anthony.l.nguyen@intel.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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