Re: [U-Boot] tftp reliability

2017-09-18 Thread Ran Shalit 
On Tue, Sep 19, 2017 at 7:04 AM, Chris Packham  wrote:
> On Tue, Sep 19, 2017 at 8:26 AM, Ran Shalit  wrote:
>> Hello,
>>
>> Does tftp checks the integrity of the file with checksum or any other
>> similar method ? If not - how can it assure the reliability of the
>> file that was transferred ?
>
> In short it doesn't. Beyond a simple block id and ack there is nothing
> that ensures what was sent is what was received.
>
> You need to rely on something else to verify the data. Fortunately
> u-boot supports some options for doing so. At $dayjob we use FIT[1]
> images for our firmware which can include multiple hashes and even
> signatures if desired.
>
> [1] - http://git.denx.de/?p=u-boot.git;a=tree;f=doc/uImage.FIT


Chris, Bob,

Thank you very much.
Ran
___
U-Boot mailing list
U-Boot@lists.denx.de
https://lists.denx.de/listinfo/u-boot

Re: [U-Boot] tftp reliability

2017-09-18 Thread Chris Packham 
On Tue, Sep 19, 2017 at 8:26 AM, Ran Shalit  wrote:
> Hello,
>
> Does tftp checks the integrity of the file with checksum or any other
> similar method ? If not - how can it assure the reliability of the
> file that was transferred ?

In short it doesn't. Beyond a simple block id and ack there is nothing
that ensures what was sent is what was received.

You need to rely on something else to verify the data. Fortunately
u-boot supports some options for doing so. At $dayjob we use FIT[1]
images for our firmware which can include multiple hashes and even
signatures if desired.

[1] - http://git.denx.de/?p=u-boot.git;a=tree;f=doc/uImage.FIT
___
U-Boot mailing list
U-Boot@lists.denx.de
https://lists.denx.de/listinfo/u-boot

Re: [U-Boot] tftp reliability

2017-09-18 Thread Robert Moskowitz 
My experience is that it doesn't.  No checking.  No assurance.  Do your 
checksums.


Best never to count on tftp over congested routed connections.

Bob

On 09/18/2017 04:26 PM, Ran Shalit wrote:

Hello,

Does tftp checks the integrity of the file with checksum or any other
similar method ? If not - how can it assure the reliability of the
file that was transferred ?

Thank you,
Ran
___
U-Boot mailing list
U-Boot@lists.denx.de
https://lists.denx.de/listinfo/u-boot


___
U-Boot mailing list
U-Boot@lists.denx.de
https://lists.denx.de/listinfo/u-boot