On Fri, Nov 28, 2025 at 7:56 AM Dumitru Ceara via dev
<[email protected]> wrote:
>
> On 11/28/25 1:16 PM, Rukomoinikova Aleksandra wrote:
> > Hi! Thank you so much for the review. I'd be glad if you merged it after
> > the squash. Thank you so much for the edits you made. There really are a
> > lot of them. I'll take a look at them and keep them in mind for the future.
> >
>
> Hi Alexandra,
>
> No worries!  I squashed in the suggested minor changes and pushed the
> patch to main.
>
> Regards,
> Dumitru
>
>
Hi Aleksandra,

Unfortunately this patch breaks the traffic from external to the
dnat_and_snat distributed IP of a logical port if the
logical router has only dnat_and_snat distributed entries (with NO
snat entries).

You can easily reproduce it using ovn-fake-multinode by deleting the
snat entries from the logical router lr1
and then trying to reach 172.16.1.110 (dnat_and_snat ip) of sw01-port1
from ovnfake-ext1 namespace in the host.

I tried to fix the issue but I was finding it hard to fix it in the
handler of en-ls-arp engine node which this patch adds.

Basically this commit is excluding all the NAT entries of a logical
router if there are no snat entries.  I'm not sure why the below
check is added here
https://github.com/ovn-org/ovn/blob/main/northd/en-ls-arp.c#L101

----------------
for (size_t i = 0; i < lrnat_rec->n_nat_entries; i++) {
  const struct ovn_nat *nat_entry = &lrnat_rec->nat_entries[i];

  if (is_centralized_nat_record(nat_entry)) {
      hmapx_add(&ls_arp_record->nat_records,
     (struct lrnat_rec *) lrnat_rec);
   }
}
------------

In the above for loop, we iterate through all the nat entries of lrnat_rec
and only add if it has atleast one centralized nat record.

Why is this required ?  Why can't the whole lrnat_rec be stored in the
ls_arp_record ?

Can you please take a look at it ?

Thanks
Numan


> [...]
>
> >> The changes I'm suggesting are minor, here's the full diff (some more 
> >> style issues
> >> are addressed in it):
> >>
> >> https://github.com/dceara/ovn/commit/a2307c9
> >>
> >> If it looks good to you too I can squash it in and push the patch to main.
> >> Please let me know what you think.
> >>
> >> Regards,
> >> Dumitru
> >>
>
> _______________________________________________
> dev mailing list
> [email protected]
> https://mail.openvswitch.org/mailman/listinfo/ovs-dev
_______________________________________________
dev mailing list
[email protected]
https://mail.openvswitch.org/mailman/listinfo/ovs-dev

Reply via email to