netdev - Re: tg3 crashes under high load, when using 100Mbits

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Date:   Tue, 20 Mar 2018 11:42:59 +0530
From:   Satish Baddipadige <satish.baddipadige@...adcom.com>
To:     Siva Reddy Kallam <siva.kallam@...adcom.com>
Cc:     Kai Heng Feng <kai.heng.feng@...onical.com>,
        Prashant Sreedharan <prashant@...adcom.com>,
        Michael Chan <mchan@...adcom.com>,
        Linux Netdev List <netdev@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Stanley Hsiao <stanley.hsiao@...onical.com>,
        Tim Chen <tim.chen119@...onical.com>
Subject: Re: tg3 crashes under high load, when using 100Mbits

On Thu, Feb 15, 2018 at 7:37 PM, Siva Reddy Kallam
<siva.kallam@...adcom.com> wrote:
> On Mon, Feb 12, 2018 at 10:59 AM, Siva Reddy Kallam
> <siva.kallam@...adcom.com> wrote:
>> On Fri, Feb 9, 2018 at 10:41 AM, Kai Heng Feng
>> <kai.heng.feng@...onical.com> wrote:
>>> Hi Broadcom folks,
>>>
>>> We are now enabling a new platform with tg3 nic, unfortunately we observed
>>> the bug [1] that dated back to 2015.
>>> I tried commit 4419bb1cedcd ("tg3: Add workaround to restrict 5762 MRRS to
>>> 2048”) but it does’t work.
>>>
>>> Do you have any idea how to solve the issue?
>>>
>>> [1] https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1447664
>>>
>>> Kai-Heng
>>>
>> Thank you for reporting. We will check and update you.
> With link aware mode, the clock speed could be slow and boot code does not
> complete within the expected time with lower link speeds. Need to override
> and the clock in driver. We are checking the feasibility of adding
> this in driver or firmware.

Hi Kai-Heng,

Can you please test the attached patch?

Thanks,
Satish

Download attachment "tg3_5762_clock_override.patch" of type "application/octet-stream" (729 bytes)