On Wed, Dec 13, 2023 at 9:57 AM Dumitru Ceara <dce...@redhat.com> wrote:
>
> On 11/28/23 03:38, num...@ovn.org wrote:
> > From: Numan Siddique <num...@ovn.org>
> >
> > Signed-off-by: Numan Siddique <num...@ovn.org>
> > ---
> >  northd/inc-proc-northd.c | 9 ++++++++-
> >  1 file changed, 8 insertions(+), 1 deletion(-)
> >
> > diff --git a/northd/inc-proc-northd.c b/northd/inc-proc-northd.c
> > index 7b1c6597e2..28f397ff39 100644
> > --- a/northd/inc-proc-northd.c
> > +++ b/northd/inc-proc-northd.c
> > @@ -185,7 +185,6 @@ void inc_proc_northd_init(struct ovsdb_idl_loop *nb,
> >      engine_add_input(&en_northd, &en_sb_mirror, NULL);
> >      engine_add_input(&en_northd, &en_sb_meter, NULL);
> >      engine_add_input(&en_northd, &en_sb_datapath_binding, NULL);
> > -    engine_add_input(&en_northd, &en_sb_mac_binding, NULL);
> >      engine_add_input(&en_northd, &en_sb_dns, NULL);
> >      engine_add_input(&en_northd, &en_sb_ha_chassis_group, NULL);
> >      engine_add_input(&en_northd, &en_sb_ip_multicast, NULL);
> > @@ -196,6 +195,14 @@ void inc_proc_northd_init(struct ovsdb_idl_loop *nb,
> >      engine_add_input(&en_northd, &en_global_config,
> >                       northd_global_config_handler);
> >
> > +    /* northd engine node uses the sb mac binding table to
> > +     * cleanup mac binding entries for deleted logical ports
> > +     * and datapaths. Any update to to SB mac binding doesn't
> > +     * change the northd engine node state or data.  Hence
> > +     * it is ok to add a noop_handler here. */
> > +    engine_add_input(&en_northd, &en_sb_mac_binding,
> > +                     engine_noop_handler);
> > +
>
> Isn't this just a case of "ovn-northd" is not really interested in
> change tracking for SB.MAC_Binding?  Can't we instead just disable
> alerting, ovsdb_idl_omit_alert(..), for all SBREC_MAC_BINDING columns
> like we do for other SB tables (lflow, multicast_group, meter,
> portt_group, logical_dp_group)?

I thought about that.  But mac_binding_ageing engine node also depends
on SB mac_binding and it results in full recompute (no handler for it).

If @Ales Musil  can confirm that the mac_binding_ageing node doesn't need
to handle SB mac_binding changes,  then I'm fine with your suggestion.

Thanks
Numan

>
> >      engine_add_input(&en_northd, &en_sb_port_binding,
> >                       northd_sb_port_binding_handler);
> >      engine_add_input(&en_northd, &en_nb_logical_switch,
>
> Regards,
> Dumitru
>
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