Re: [dpdk-dev] [PATCH] cmdline: reduce ABI

[Olivier Matz <olivier.matz@6wind.com>]

Hi Dmitry,

On Mon, Sep 20, 2021 at 01:11:23PM +0200, David Marchand wrote:
> On Sat, Sep 11, 2021 at 1:17 AM Dmitry Kozlyuk <dmitry.kozliuk@gmail.com> wrote:
> >
> > Remove the definition of `struct cmdline` from public header.
> > Deprecation notice:
> > https://mails.dpdk.org/archives/dev/2020-September/183310.html
> >
> > Signed-off-by: Dmitry Kozlyuk <dmitry.kozliuk@gmail.com>
> 
> This patch lgtm.
> Acked-by: David Marchand <david.marchand@redhat.com>

Acked-by: Olivier Matz <olivier.matz@6wind.com>

Many thanks Dmitry for taking care of this.


> > ---
> > I would also hide struct rdline to be able to alter buffer size,
> > but we don't have a deprecation notice for it.
> 
> Fyi, I found one project looking into a rdline pointer to get the back
> reference to cmdline stored in opaque.
> https://github.com/Gandi/packet-journey/blob/master/app/cmdline.c#L1398
> 
> This cmdline pointer is then dereferenced to get s_out.
> Given that we announced cmdline becoming opaque, they would have to
> handle the first API change in any case.
> I don't think another API change would really make a big difference to them.
> 
> Plus, this project seems stuck to 18.08 support.

I agree with you and David, it would make sense to also hide the rdline
struct at the same time.


Olivier