-----Original Message-----
From: Li Yu [mailto:raise.sail@gmail.com]
Sent: Tuesday, November 13, 2012 7:37 PM
To: Dave, Tushar N
Cc: Joe Jin; e1000-devel@lists.sf.net; netdev@vger.kernel.org; linux-
kernel@vger.kernel.org; Mary Mcgrath
Subject: Re: 82571EB: Detected Hardware Unit Hang

于 2012年11月09日 04:35, Dave, Tushar N 写道:

quoted

quoted

-----Original Message-----
From: netdev-owner@vger.kernel.org
[mailto:netdev-owner@vger.kernel.org]
On Behalf Of Joe Jin
Sent: Wednesday, November 07, 2012 10:25 PM
To: e1000-devel@lists.sf.net
Cc: netdev@vger.kernel.org; linux-kernel@vger.kernel.org; Mary
Mcgrath
Subject: 82571EB: Detected Hardware Unit Hang

Hi list,

IHAC reported "82571EB Detected Hardware Unit Hang" on HP ProLiant
DL360 G6, and have to reboot the server to recover:

e1000e 0000:06:00.1: eth3: Detected Hardware Unit Hang:
  TDH                  <1a>
  TDT                  <1a>
  next_to_use          <1a>
  next_to_clean        <18>
buffer_info[next_to_clean]:
  time_stamp           <10047a74e>
  next_to_watch        <18>
  jiffies              <10047a88c>
  next_to_watch.status <1>
MAC Status             <80383>
PHY Status             <792d>
PHY 1000BASE-T Status  <3800>
PHY Extended Status    <3000>
PCI Status             <10>

With newer kernel 2.0.0.1 the issue still reproducible.

Device info:
06:00.1 Ethernet controller: Intel Corporation 82571EB Gigabit
Ethernet Controller (Copper) (rev 06)
06:00.1 0200: 8086:10bc (rev 06)

I compared lspci output before and after the issue, different as below:
06:00.1 Ethernet controller: Intel Corporation 82571EB Gigabit
Ethernet Controller (Copper) (rev 06)
	Subsystem: Hewlett-Packard Company NC364T PCI Express Quad Port
Gigabit Server Adapter
	Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr+
Stepping- SERR- FastB2B- DisINTx-
-	Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
+	Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort-
+<TAbort- <MAbort- >SERR- <PERR- INTx+

Are you sure this is not similar issue as before that you reported.
i.e.
On Mon, 2012-07-09 at 16:51 +0800, Joe Jin wrote:

quoted

I'm seeing a Unit Hang even with the latest e1000e driver 2.0.0 when
doing scp test. this issue is easy do reproduced on SUN FIRE X2270
M2, just copy a big file (>500M) from another server will hit it at

once.

quoted

All devices in path from root complex to 82571, should have *same* max

payload size otherwise it can cause hang.

quoted

Can you double check this?

We also found such hang problem on 82599EB (ixgbe driver) in RHEL6.3
kernel, we ever tried to upgrade to latest version (3.8.21 or 3.10.17),
but it still happens.

Is it probably also due to wrong "max payload size" set in BIOS?

It could be or could not be. I would suggest please create another thread with that issue as these two devices are significantly different.

-Tushar