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Bug#941122: e1000e is slooow for I219-LM



found 941122 4.19.67-2
thanks


We have also seen this with the 4.19 kernel in buster.


Links to Ubuntu bug reports and commits (but I have not verified that
these patches fix the issue):

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1836152
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1836177



commit 17fbc0334e61b81ae25213c220f80c666af3cfb0
Author: Kai-Heng Feng <kai.heng.feng@canonical.com>
Date:   Thu Jul 11 15:16:46 2019 +0800

    UBUNTU: SAUCE: e1000e: disable force K1-off feature

    BugLink: https://bugs.launchpad.net/bugs/1836152

    Forwardport from
http://mails.dpdk.org/archives/dev/2016-November/050658.html

    MAC-PHY desync may occur causing misdetection of link up event.
    Disabling K1-off feature can work around the problem.

    Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=204057

    Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
    (cherry picked from commit 3a818fd5094bd988b371228b12ed33531d727d15

git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/next-queue.git
dev-queue)
    Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
    Signed-off-by: Seth Forshee <seth.forshee@canonical.com>

commit 403461fdd2e01e12bfb4a33e58c153e8ae355801
Author: Kai-Heng Feng <kai.heng.feng@canonical.com>
Date:   Thu Jul 11 15:16:45 2019 +0800

    UBUNTU: SAUCE: e1000e: add workaround for possible stalled packet

    BugLink: https://bugs.launchpad.net/bugs/1836152

    Forwardport from
http://mails.dpdk.org/archives/dev/2016-November/050657.html

    This works around a possible stalled packet issue, which may occur
due to
    clock recovery from the PCH being too slow, when the LAN is
transitioning
    from K1 at 1G link speed.

    Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=204057

    Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
    (cherry picked from commit 82f7de996433eee486f1acb37ad9047b431ec13d

git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/next-queue.git
dev-queue)
    Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
    Signed-off-by: Seth Forshee <seth.forshee@canonical.com>



commit 59653e6497d16f7ac1d9db088f3959f57ee8c3db
Author: Detlev Casanova <detlev.casanova@gmail.com>
Date:   Sat Jun 22 23:14:37 2019 -0400

    e1000e: Make watchdog use delayed work

    Use delayed work instead of timers to run the watchdog of the e1000e
    driver.

    Simplify the code with one less middle function.

    Signed-off-by: Detlev Casanova <detlev.casanova@gmail.com>
    Tested-by: Aaron Brown <aaron.f.brown@intel.com>
    Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>


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