[U-Boot] [RFC][PATCH] net: nfs: extend NFS_TIMEOUT

[Joe Hershberger]

Hi Scott,

On Tue, Jun 26, 2012 at 1:34 PM, Scott Wood <scottwood at freescale.com> wrote:
> On 06/26/2012 10:30 AM, Joe Hershberger wrote:
>> Hi Tetsuyuki,
>>
>> On Tue, Jun 26, 2012 at 3:52 AM, Wolfgang Denk <wd at denx.de> wrote:
>>> Dear Tetsuyuki Kobayashi,
>>>
>>> In message <4FE9711A.2090602 at kmckk.co.jp> you wrote:
>>>>
>>>>>> Are you sure the problems are not in the board specific code?
>>>>> OK. I will try the same thing on an in-tree board (maybe, panda board) to check if this is board specific or not.
>>>>
>>>> I did on a panda board. It has the same problem and this patch solves it. So this is not board specific problem. Please consider to change global setting of NFS_TIMEOUT in nfs.c.
>>>
>>> net/nfs.c is not the right place to make board specific adjustments.
>>>
>>> I am still not convinced this is an issue with the global code.  It
>>> could be your NFS server as well.
>>
>> I'm not convinced either.  It clearly depends on the speed of your
>> server, the speed of the connection, the size of the file you are
>> transferring, etc.
>
> Is the timeout for completing the transfer, or for making forward progress?

The timeout is reset each time that NetSetTimeout() is called.  For
NFS, that happens when a transfer starts, when the timeout occurs (a
retry begins), and when a "read request" response comes from the
server.  I would bet that means it should be a timeout for making
progress, but I'm not an NFS protocol expert.

-Joe