[stratum-dev] Table entry from stratum_bmv2 different from ONOS store

A Sydney asydney007 at gmail.com
Tue May 18 20:10:50 UTC 2021


Please let me know when a fix is pushed (or if you can provide a tkt/issue
#, I can track it from the stratum repo). I'll then rebuild the debian
package, create a new image and test out the change.

Thanks!
-Syd

On Tue, May 18, 2021 at 2:20 PM Maximilian Pudelko <max at opennetworking.org>
wrote:

> Hi Syd,
>
> I think this could be related to the recent PI update we did for
> Stratum-bmv2: https://github.com/stratum/stratum/pull/660
> It now returns canonical byte strings in all P4Runtime messages, which
> confuses ONOS. We're working on fixing it:
> https://gerrit.onosproject.org/c/onos/+/24616
>
> Max
>
>
> On Tue, May 18, 2021 at 7:59 AM A Sydney via stratum-dev <
> stratum-dev at lists.stratumproject.org> wrote:
>
>> Hi Stratum folks,
>>                           I've used the debugger in Intellij to narrow
>> down the issue (@P4RuntimeFlowRuleProgrammable.java line 233). As shown in
>> the attached debugger gui, It appears that
>> "tableAction->runtimeParams->value->value->value->hb" has different values
>> for "translatedEntitity.get().translated()" and "entry". Hence, these flow
>> rules are in a "PENDING ADD" state. Can you kindly provide feedback on this
>> issue? Is this stratum specific, ONOS, or perhaps java?
>>
>> Thanks,
>> -Syd
>> [image: onos_debug_gui.png]
>>
>>
>>
>> On Wed, May 12, 2021 at 11:06 PM A Sydney <asydney007 at gmail.com> wrote:
>>
>>> Hi Stratum folks,
>>>
>>> # Context: I'm running standalone stratum_bmv2 instances on Debian 10
>>> connected to ONOS where I've got a custom pipeconfig and app.
>>>
>>> # Problem:
>>> When I install flows, ONOS logs an error that table entries in
>>> "l2_exact_table" on the switch are different from what's recorded in the
>>> ONOS store. However, if you take a look at the rules, they are identical as
>>> shown here: https://pastebin.com/i4Jkt26i
>>>
>>> I activated the debugger and set a breakpoint near "if
>>> (!translatedEntity.get().translated().equals(entry))" (i.e. in
>>> P4RuntimeFlowRuleProgrammable.java) and both "translated" and "entry" have
>>> the same values.
>>>
>>> Have you come across this one? If not, perhaps I should take this up
>>> with ONOS folks?
>>>
>>> PS. I don't see this issue for other tables.
>>>
>>> Thanks,
>>> -Syd
>>>
>> _______________________________________________
>> stratum-dev mailing list
>> stratum-dev at lists.stratumproject.org
>> https://lists.stratumproject.org/listinfo/stratum-dev
>
>
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