On 1/19/26 11:20 AM, Eelco Chaudron wrote:
> 
> 
> On 16 Jan 2026, at 17:12, Eelco Chaudron wrote:
> 
>> On 16 Jan 2026, at 12:13, Ilya Maximets wrote:
>>
>>> On 1/15/26 10:01 PM, Eelco Chaudron wrote:
>>>>
>>>>
>>>> On 15 Jan 2026, at 18:44, Ilya Maximets wrote:
>>>>> On 1/15/26 10:19 AM, Eelco Chaudron wrote:
>>>> [...]
>>>>
>>>>> Thanks, Eelco for the update!  I read through the set again and it
>>>>> reads much easier after the renames.  There are still a few small
>>>>> style issues throughout the set, but they are all minor like an
>>>>> extra empty line at the EOF of dpif-offload.c in patch 7, a few
>>>>> more places with a missing double space or underscore or the thread
>>>>> safety annotations not on a separate line.  There is also a missed
>>>>> rename of dpif_offload_flow_get_n_offloaded() into something like
>>>>> dpif_ofload_flow_count(), since the underlying callback was renamed.
>>>>> And the provider_collection_add() should return a positive errno
>>>>> after all, since it's passed directly into ovs_strerror().
>>>>>
>>>>> As discussed off-list, instead of me writing all of these nits down
>>>>> in the emails and then you fixing them, it's simpler if I just
>>>>> handle the merge and fix the nits on commit.
>>>>>
>>>>> Also, found a couple more issues that we should address:
>>>>>
>>>>> 1. In the first patch, the dpif_offload_dump_next() function is
>>>>>    describing a case that should be impossible, but still tries
>>>>>    to handle it.  We shouldn't do that.  And instead we need to
>>>>>    just take the collection reference in dpif_offload_dump_start()
>>>>>    to make sure the collection doesn't go away during the dump.
>>>>>    And then we can fully rely on the LIST_FOR_EACH_CONTINUE.
>>>>>
>>>>> 2. The per-port priority configuration should be per-interface
>>>>>    instead as datapath doesn't deal with ports, it only works
>>>>>    with interfaces.  And some ports, like bonds can have multiple
>>>>>    interfaces.  It may not be a big deal as in a normal case
>>>>>    I don't think we would need different offload for interfaces
>>>>>    in the same port, but it's not really correct to configure
>>>>>    ports, when it is applied on the interface.
>>>>>
>>>>> And there are two things that I flagged in v5, but we decided to
>>>>> handle separately:
>>>>>
>>>>> 3. Mass-rename of offload provider structures and functions to
>>>>>    make them coherent and shorter than they are.  Most of them
>>>>>    are not exported and don't need extensive prefixes.  And these
>>>>>    prefixes need unification after moving stuff between netdev*
>>>>>    and dpif* modules.
>>>>>
>>>>> 4. Move of the port manager instances from provider-specific
>>>>>    structures to the common struct dpif_offload.  This should
>>>>>    eliminate some duplication and make the module boundaries
>>>>>    more clear.  This should also eliminate the need for the
>>>>>    port dump API or at least significantly simplify it, e.g.
>>>>>    by just iterating over port cmap with a cmap_cursor.
>>>>>
>>>>>
>>>>> So, the situation is the following: We have branching planned for
>>>>> tomorrow.  Full CI run takes about 24 hours.  So, we don't really
>>>>> have time for v7.  We could postpone branching, but it also seems
>>>>> unreasonable as we only really need changes in about 4 patches
>>>>> out of 40, and none of the issues listed above are critical or
>>>>> breaking any functionality.  They are mostly internal code movements.
>>>>> It would be much easier to get the set merged and then work on the
>>>>> 4 items above next week and backport to the new branch.
>>>>>
>>>>> As mentioned earlier, to save some time, I can handle the merging
>>>>> and fix all the small nits on commit instead of wasting a lot of
>>>>> time on writing them down on the mailing list and then Eelco
>>>>> fixing them.
>>>>>
>>>>> Eelco, Aaron, does that sound like a good plan?  Or did I miss
>>>>> anything in my summary?
>>>>
>>>> Thanks, Ilya, for summarizing our offline discussion! This seems like
>>>> the best way forward, and I will start working on those patches once
>>>> I get back on Monday.
>>>
>>> Thanks, Eelco, Eli, and Aaron!  As agreed, I fixed all the small nits
>>> that I saw throughout the set, added ACKs from Aaron, and applied the
>>> set to main.  Also backported patch 34 down to 3.3.
>>>
>>> Let's try to get the patches for the remaining 4 items above soon after
>>> branching.
>>
>> Thanks for taking care of this Ilya!! I’ll start working on the followup 
>> patches on Monday.
> 
> In addition, Coverity marked 9 issues as resolved, but we introduced 6 new 
> ones.

IIRC, coverity is not very smart when it comes to code movement.  So, I would
guess, most of these are just pre-existing reports moved to a different file.

> I did notice similar ones in my pre-merge builds; they are all related to 
> accessing
> RCU-protected structures without a lock, which is the purpose of RCUs :) I’ll 
> take
> a closer look this week and mark them as false positives. If any of them need 
> a
> patch, I’ll send it.
> 
> Cheers,
> 
> Eelco
> 

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