Re: [dpdk-dev] [RFC v2] meter: fix ABI break due to experimental tag removal

[Luca Boccassi <bluca@debian.org>]

On Thu, 2020-01-30 at 13:33 +0100, Thomas Monjalon wrote:
> Hi,
> 
> I disagree with the need of this patch.
> The symbol was experimental, meaning we can change it.
> Removing experimental tag is not an ABI break.

Hi,

This symbol change was requested for backport in 19.11.x, and
experimental or not I'm not too keen on backward incompatible changes
to the public interface in an _LTS point release_. The compromise was
to see if we could support both symbols version, which makes the change
backward compatible.

If you prefer not to have this patch in mainline I'm also fine in
taking it just for the LTS. I agree with you that it is not required
for mainline releases (although nicer for me if it's a backport rather
than a new change).

> 29/01/2020 17:43, Ferruh Yigit:
> > Duplicated the existing symbol and versioned one as experimental
> > and
> > other as stable.
> 
> [..]
> > --- a/lib/librte_meter/rte_meter_version.map
> > +++ b/lib/librte_meter/rte_meter_version.map
> > @@ -20,4 +20,12 @@ DPDK_20.0.1 {
> >  	rte_meter_trtcm_rfc4115_color_blind_check;
> >  	rte_meter_trtcm_rfc4115_config;
> >  	rte_meter_trtcm_rfc4115_profile_config;
> > +
> >  } DPDK_20.0;
> > +
> > +EXPERIMENTAL {
> > +       global:
> > +
> > +	rte_meter_trtcm_rfc4115_config;
> > +	rte_meter_trtcm_rfc4115_profile_config;
> > +};
> 
> 
> 
> 
> 
-- 
Kind regards,
Luca Boccassi