[Bug 279245] igc(4) I226 (and I225) TX hangups

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=279245

--- Comment #10 from Michael Adler <madler@tapil.com> ---
I've seen cases where the bug was in power management in the HW, where the real
solution short of modifying the HW was working around the power management bug.
In that case it was a PCIe core purchased from a major IP vendor that would go
into micro sleep states based on the traffic pattern sent to it from the
device. The time required to wake up caused major loss of bandwidth. There's
nothing the kernel or driver could have done to fix it short of preventing the
mode that allowed sleep.

Given that everyone reporting problems fixes it with the same solution and
Intel hasn't worked around it even in the latest firmware, doesn't it seem
reasonable to conclude that the driver should deal with this quirk/bug and that
Intel won't?

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