There is an issue with flow control configuration on i40e devices and it has a work around. We add this to documentation as known issue until a permanent solution is developed.
Signed-off-by: Tomasz Konieczny <[email protected]> --- Documentation/intro/install/dpdk.rst | 9 +++++++++ Documentation/topics/dpdk/phy.rst | 2 ++ 2 files changed, 11 insertions(+) diff --git a/Documentation/intro/install/dpdk.rst b/Documentation/intro/install/dpdk.rst index dbf88ec..be47a11 100644 --- a/Documentation/intro/install/dpdk.rst +++ b/Documentation/intro/install/dpdk.rst @@ -687,6 +687,15 @@ Limitations around is temporary and is expected to be removed once a method is provided by DPDK to query the upper bound MTU value for a given device. +- Flow Control: When using i40e devices (Intel(R) 700 Series) it is recommended + to set Link State Change detection to interrupt mode. Otherwise it has been + observed that using the default polling mode, flow control changes may not be + applied, and flow control states will not be reflected correctly. + The issue is under investigation, this is a temporary work around. + + For information about setting Link State Change detection, refer to + :ref:`lsc-detection`. + Reporting Bugs -------------- diff --git a/Documentation/topics/dpdk/phy.rst b/Documentation/topics/dpdk/phy.rst index 38e52c8..55a98e2 100644 --- a/Documentation/topics/dpdk/phy.rst +++ b/Documentation/topics/dpdk/phy.rst @@ -385,6 +385,8 @@ Jumbo Frames DPDK physical ports can be configured to use Jumbo Frames. For more information, refer to :doc:`jumbo-frames`. +.. _lsc-detection: + Link State Change (LSC) detection configuration ----------------------------------------------- -- 2.7.4 _______________________________________________ dev mailing list [email protected] https://mail.openvswitch.org/mailman/listinfo/ovs-dev
