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Date:	Wed, 23 Jul 2008 08:42:40 -0500
From:	"Jon Nelson" <>
To:	"Michael Chan" <>
Cc:	"Andrew Morton" <>,
	"" <>,
	"" <>,
	"Matthew Carlson" <>
Subject: Re: [Bugme-new] [Bug 11147] New: tg3 + jumbo frames + scatter-gather == inoperative NIC

On Wed, Jul 23, 2008 at 1:25 AM, Michael Chan <> wrote:
> Jon Nelson wrote:
>> What other information can I provide?
>> This is 100% reproducible.
> Please provide lspci output and tg3 signon output so that
> we know what device is failing.

OK. I added the output of:

{ lspci -t ; lspci -vvv; lspci -k -xxx ; } > lspci-all.frank

as an attachment to the bug.


frank:~ # ethtool -t eth0
The test result is FAIL
The test extra info:
nvram test     (online)          0
link test      (online)          0
register test  (offline)         1
memory test    (offline)         0
loopback test  (offline)         0
interrupt test (offline)         0

frank:~ #

So, I added the output of:

ethtool -d eth0

Now. The above is all with 1500 byte frames.
If I switch to 9000 byte frames and take the interface down and then
back up again, I am unable to communicate with it, *provided*
scatter-gather is also enabled (which it is by default).

>From a cold boot (and 1500 byte frames):

frank:~ # ethtool -k eth0
Offload parameters for eth0:
rx-checksumming: on
tx-checksumming: on
scatter-gather: on
tcp segmentation offload: off
udp fragmentation offload: off
generic segmentation offload: off
frank:~ #

I'll be adding ethtool -d using 9000 byte frames in the next 30 minutes.
Is there anything else I can provide?

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