> -----Original Message-----
> From: lng-odp [mailto:[email protected]] On Behalf Of
> Christophe Milard
> Sent: Thursday, May 19, 2016 10:43 AM
> To: Bill Fischofer <[email protected]>
> Cc: LNG ODP Mailman List <[email protected]>
> Subject: Re: [lng-odp] [PATCH 1/2] doc: userguide: add section describing
> helpers
> 
> On 19 May 2016 at 06:05, Bill Fischofer <[email protected]> wrote:
> 
> > Signed-off-by: Bill Fischofer <[email protected]>


> >
> > +=== ODP Helpers
> > +ODP also provides a set of _helper_ functions that are
> > +distinguished by the `odph_` prefix. These are not part of the ODP API
> > +specification, but may be useful to both applications and
> implementations.
> >
> 
> This statement allows for circular dependancy:
> Using helpers from the application means that helpers will use ODP, as
> helpers will perform usual stuff that application needs to do: for
> instance
> helpers uses the ODP cpu_mask for creating threads, and helpers may do
> other common application things toward ODP according to this definition.
> Having things such as IP header description in helpers means that helpers
> are needed by ODP:
> In other words: helper is needed by ODP and needs ODP!
> I know this is the situation today, but I am not sure we should write this
> in stone. Maybe the helpers should be splitted as ODP_helpers and
> APP_helpers?
> 

Helpers are for applications (reuse code and definitions in examples and 
tests). Implementations should contain  their own (protocol header) 
definitions, so no dependency to the helper lib.

-Petri


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