Hi Bin,
On Mon, Aug 24, 2015 at 11:05 PM, Bin Meng <bmeng...@gmail.com> wrote:
> Hi Joe,
>
> On Tue, Aug 25, 2015 at 11:42 AM, Joe Hershberger
> <joe.hershber...@gmail.com> wrote:
>> Hi Bin,
>>
>> On Mon, Aug 24, 2015 at 9:25 PM, Bin Meng <bmeng...@gmail.com> wrote:
>>> Hi,
>>>
>>> With latest u-boot/master, TFTP is seriously broken.
>>>
>>> => tftp 100000 bzImage
>>> Speed: 100, full duplex
>>> Using pch_gbe device
>>> TFTP from server 10.10.0.8; our IP address is 10.10.0.100; sending
>>> through gateway 10.10.0.1
>>> Filename 'bzImage'.
>>> Load address: 0x100000
>>> Loading: T
>>> TFTP error: 'Unsupported option(s) requested' (8)
>>> Starting again
>>
>> I'm guessing you are having an issue that the TFTP server you are
>> using for some reason does not allow a timeout as small as 10 ms. What
>> server are you testing against? Can you experiment and find the lowest
>> that it accepts? Maybe there is a compromise we can reach that still
>> works with most (all?) servers and also improves the behavior in a
>> lossy environment.
>
> I am using a CentOS server, with /etc/xinetd.d/tftp configuration below.
>
> service tftp
> {
> socket_type = dgram
> protocol = udp
> wait = yes
> user = root
> server = /usr/sbin/in.tftpd
> server_args = -s /tftpboot
> disable = no
> per_source = 11
> cps = 100 2
> flags = IPv4
> }
>
> I don't see an entry to change timeout settings.
I didn't mean to change the server settings; I meant can you adjust
the U-Boot code until your server doesn't reject the option?
>>> git bisect shows the following commit broke the TFTP
>>>
>>> commit 620776d734e4b126c407f636bda825a594a17723
>>> Author: Pavel Machek <pa...@denx.de>
>>> Date: Tue Aug 18 14:34:26 2015 +0200
>>>
>>> tftp: adjust settings to be suitable for 100Mbit ethernet
>>>
>>> Adjust timouts and retry counts to be suitable for loaded ethernet
>>> network. With 5 seconds timeout, 10 retries maximum, tftp is
>>> impossible even on local network with single full-speed TCP
>>> connection.
>>>
>>> 100msec timeout should be suitable for most networks tftp is used on,
>>> that is local ethernets. Timeout count really needs to be way higher,
>>> as lost packets are normal when TCP is running over the same network.
>>>
>>> Enforce 10msec minimum.
>>>
>>> Signed-off-by: Pavel Machek <pa...@denx.de>
>>> Acked-by: Joe Hershberger <joe.hershber...@ni.com>
>>>
>>> Can we get this fixed ASAP? Thanks,
>>
>> Hopefully with a little more information about your case we can get
>> this resolved quickly.
>>
>
> Regards,
> Bin
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