[dpdk-dev] [PATCH v1 0/7] Flow API helpers enhancements
adrien.mazarguil at 6wind.com
Fri Oct 6 10:05:50 CEST 2017
On Fri, Oct 06, 2017 at 02:13:14AM +0100, Ferruh Yigit wrote:
> On 10/5/2017 10:49 AM, Adrien Mazarguil wrote:
> > This series brings enhancements to various rte_flow helpers:
> > - Allow applications to use rte_flow_error_set() by making it part of the
> > public interface and documenting it as such.
> > - Address rte_flow_copy()'s limitations by replacing it with the more
> > versatile rte_flow_conv(). This new function allows retrieving other
> > properties such as item/action names, enabling testpmd to finally use it
> > and get rid of duplicated code.
> > - Add a script (gen-rte_flow_conv-h.sh) to help with generating the
> > resources used by rte_flow_conv(). Developers should run it when adding or
> > modifying pattern items or actions (done as part of this series to add the
> > missing "fuzzy" pattern item).
> > - Future plans for rte_flow_conv() include translating error codes to
> > human-readable messages, so applications do not have to make their own.
> > All these changes address concerns raised a couple of months ago . Work
> > on these patches actually started at the time but I was unable to complete
> > and clean them up until recently.
> >  http://dpdk.org/ml/archives/dev/2017-July/070492.html
> > Adrien Mazarguil (7):
> > ethdev: expose flow API error helper
> > ethdev: replace flow API object copy function
> > ethdev: add flow API item/action name conversion
> > app/testpmd: rely on flow API conversion function
> > ethdev: enhance flow API item/action descriptions
> > ethdev: generate flow API conversion header
> > ethdev: update flow API conversion header
> Hi Adrien,
> This received too late for this release cycle, and changes in rte_flow
> library may effect PMDs.
> I suggest deferring the set to next release, what do you think?
My opinion as the author (since you're asking :) is that it would be nice to
have it in this release assuming reviewers don't find blocker issues with
To summarize the changes from a PMD standpoint:
- rte_flow_error() (previously not public) switching from positive to
negative return value like the other rte_flow_*() functions. The only PMDs
relying on its return value so far are mlx4 and tap.
- rte_flow_copy() disappearing. This function was temporary pending a better
solution, and so far is only used by fail-safe PMD (modified as part of
this series). Besides fail-safe, PMDs did not a have a use case for this
These patches were originally targeted at 17.08, and since the "fuzzy" item
is missing from rte_flow_copy() (GTP/GTPU/GTPC are now also missing by the
way) and there is currently a lot of redundancy between this function and
testpmd's internals, I thought it would be a good time to have everything in
a single place. I was also considering using rte_flow_conv() in upcoming
mlx4 patches in case it was included.
So here's my suggestion: I can track all rte_flow-related changes in PMDs
and in rte_flow itself and update this series accordingly until things have
settled (e.g. I'll re-submit to rebase and include GTP). Once applied, I
will check all new code that relies on these two functions and update it if
necessary until the release. How about that?
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