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

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Date:   Thu, 15 Feb 2018 19:37:56 +0530
From:   Siva Reddy Kallam <siva.kallam@...adcom.com>
To:     Kai Heng Feng <kai.heng.feng@...onical.com>
Cc:     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 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.