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So I did indeed forget to do the final bisect, however, it turns the
da1e204 commit is still the culprit.
After some testing, I've determined the second part of the patch, is
guilty for causing this faulty behavior.
@@ -4034,6 +4027,12 @@ void e1000e_down(struct e1000_adapter *adapter)
adapter->link_speed = 0;
adapter->link_duplex = 0;
+ /* Disable Si errata workaround on PCHx for jumbo frame flow */
+ if ((hw->mac.type >= e1000_pch2lan) &&
+ (adapter->netdev->mtu > ETH_DATA_LEN) &&
+ e1000_lv_jumbo_workaround_ich8lan(hw, false))
+ e_dbg("failed to disable jumbo frame workaround mode\n");
+
Just taking an educated guess here (I'm not a much of a programmer) it
looks like e1000_lv_jumbo_workaround_ich8lan is being called. The
e1000_lv_jumbo_workaround_ich8lan function, disables the rx path, does
work around stuff, and then re-enables the the rx path.
However, when this bug is triggered, I don't see any incoming traffic, I
suspect the rx path is not being enabled.
Kernel Bug: https://bugzilla.kernel.org/show_bug.cgi?id=67021
Let me know how I can help.
Thanks,
Matthew Gyurgyik
On 12/16/2013 02:08 PM, Matthew Gyurgyik wrote:
> Bruce, thanks for pointing me in the right direction.
>
> I think I may have forgot to do the final git bisect. I will do this as
> soon as I get home tonight.
>
> Sorry,
> Matthew
>
> On 2013-12-16 12:37, Allan, Bruce W wrote:
>> Since I am not currently focused on e1000e, adding the appropriate
>> mailing list, [email protected].
>>
>>> -----Original Message-----
>>> From: Matthew Gyurgyik [mailto:[email protected]]
>>> Sent: Sunday, December 15, 2013 1:28 PM
>>> To: Allan, Bruce W
>>> Cc: Brown, Aaron F; Kirsher, Jeffrey T
>>> Subject: e1000e: git commit da1e204 introduced a bug with the Intel
>>> I217-V
>>>
>>>
> Hi all!
>
> I discovered a bug with the e1000e kernel model when used with the
> Intel
> I217-V chipset. I performed a git bisect and traced the bug to the
> following commit that you Signed-off/Authored/Tested.
> >>>>
> >>>> commit da1e2046e5f5ab268e55d30d6b74099ade0aeb6f
> >>>> Author: Bruce Allan <[email protected]>
> >>>> Date: Fri Jun 21 09:07:02 2013 +0000
> >>>>
> >>>> e1000e: iAMT connections drop on driver unload when jumbo frames
> enabled
>
> I have created a bug report in the kernel.org's bugzilla [1]. I wanted
> to make you aware of this report/issue. If there is any testing,
> information, etc... that you need from me, let me know.
>
> [1] https://bugzilla.kernel.org/show_bug.cgi?id=67021
>
> Thank you,
> Matthew Gyurgyik
> _______________________________________________
> E1000-devel mailing list
> [email protected]
> https://lists.sourceforge.net/lists/listinfo/e1000-devel
> To learn more about Intel® Ethernet, visit
http://communities.intel.com/community/wired
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