From: Alexander Duyck <alexander.duyck@gmail.com>
To: Sowmini Varadhan <sowmini.varadhan@oracle.com>
Cc: Alexander Duyck <aduyck@mirantis.com>,
Netdev <netdev@vger.kernel.org>,
intel-wired-lan <intel-wired-lan@lists.osuosl.org>,
"Brandeburg, Jesse" <jesse.brandeburg@intel.com>,
Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Subject: Re: [net PATCH] i40e/i40evf: Limit TSO to 7 descriptors for payload instead of 8 per packet
Date: Wed, 30 Mar 2016 10:35:55 -0700 [thread overview]
Message-ID: <CAKgT0Ufb-_X-DD2jYkVJQwLZ-JBfWD2Biuhi6YaxWBeNy9K2fQ@mail.gmail.com> (raw)
In-Reply-To: <20160330172001.GD27540@oracle.com>
On Wed, Mar 30, 2016 at 10:20 AM, Sowmini Varadhan
<sowmini.varadhan@oracle.com> wrote:
> On (03/30/16 10:12), Alexander Duyck wrote:
>> Yeah. The patch was sort of a knee-jerk reaction to being told that
>> the patch referenced caused a regression. From what I can tell that
>> is not the case as I am also seeing the Tx hangs when I run the test
>> with the frames being linearized.
>
> I'm not sure how important of a subtlety this is, but the actual
> console log after the patch is the following:
>
> i40e 0000:82:00.0: TX driver issue detected, PF reset issued
> i40e 0000:82:00.0 eth2: adding 68:05:ca:30:dd:18 vid=0
> i40e 0000:82:00.0: TX driver issue detected, PF reset issued
> i40e 0000:82:00.0 eth2: adding 68:05:ca:30:dd:18 vid=0
> i40e 0000:82:00.0: TX driver issue detected, PF reset issued
>
> Comparing with what I'd pasted in the sourceforge thread earlier,
> I see that it does not say "Hung Tx queue etc." any more, though
> it still resets.
>
> Not sure if that changed info is significant?
It might be. Right now I am chasing down the Tx driver issue as that
I what I am reproducing in my environment as well.
>From what I can tell by enabling msglvl tx_err it is reporting MDD
event 0x2. Unfortunately the documentation doesn't say what that is
so I am checking a few different possibilities.
- Alex
next prev parent reply other threads:[~2016-03-30 17:35 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-30 6:44 [net PATCH] i40e/i40evf: Limit TSO to 7 descriptors for payload instead of 8 per packet Alexander Duyck
2016-03-30 17:00 ` Sowmini Varadhan
2016-03-30 17:12 ` Alexander Duyck
2016-03-30 17:20 ` Sowmini Varadhan
2016-03-30 17:35 ` Alexander Duyck [this message]
2016-03-30 19:41 ` Jesse Brandeburg
2016-03-30 20:09 ` Sowmini Varadhan
2016-03-30 20:15 ` Eric Dumazet
2016-03-30 20:40 ` Sowmini Varadhan
2016-03-30 21:20 ` Alexander Duyck
2016-03-30 23:06 ` Alexander Duyck
2016-03-30 18:38 ` Jesse Brandeburg
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