[dpdk-dev] API feature check _HAS_

[Gleb Natapov]

On Sun, Nov 29, 2015 at 11:07:44AM +0200, Vlad Zolotarov wrote:
> 
> 
> On 11/26/15 22:35, Thomas Monjalon wrote:
> >When introducing LRO, Vlad has defined the macro RTE_ETHDEV_HAS_LRO_SUPPORT:
> >http://dpdk.org/browse/dpdk/commit/lib/librte_ether/rte_ethdev.h?id=8eecb329
> >
> >It allows to use the feature without version check (before the release or
> >after a backport).
> >Do you think it is useful?
> >Should we define other macros RTE_[API]_HAS_[FEATURE] for each new feature
> >or API change?
> 
> The main purpose of the above macro was to identify the presence of the new
> field in the rte_eth_rxmode during the
> period of time when there was no other way to know it. Once this may be
> concluded based on the release version I see no
> reason to keep it.
> 
Concluding things based on release version does not work so well for
back ports.

> >It's time to fix it before releasing the 2.2 version.
> 

--
			Gleb.