Re: [dpdk-stable] [dpdk-dev] [PATCH] ethdev: update qfi definition

[Ori Kam <orika@nvidia.com>]

Hi

> -----Original Message-----
> From: dev <dev-bounces@dpdk.org> On Behalf Of Ferruh Yigit
> Subject: Re: [dpdk-dev] [PATCH] ethdev: update qfi definition
> 
> On 3/23/2021 12:11 PM, Raslan Darawsheh wrote:
> > qfi field is 8 bits which represent single bit for
> > PPP (paging Policy Presence) single bit for RQI
> > (Reflective QoS Indicator) and 6 bits for qfi
> > (QoS Flow Identifier)
> 
> Can you please put a reference for above information?
> >
> > This update the doxygen format and the mask for qfi
> > to properly identify the full 8 bits of the field.
> >
> > note: changing the default mask would cause different
> > patterns generated by testpmd.
> >
> > Fixes: 346553db5bd1 ("ethdev: add GTP extension header to flow API")
> > Cc: ying.a.wang@intel.com
> > Cc: stable@dpdk.org
> >
> > Signed-off-by: Raslan Darawsheh <rasland@nvidia.com>
> > ---
> >   doc/guides/testpmd_app_ug/testpmd_funcs.rst | 3 ++-
> >   lib/librte_ethdev/rte_flow.h                | 4 ++--
> >   2 files changed, 4 insertions(+), 3 deletions(-)
> >
> > diff --git a/doc/guides/testpmd_app_ug/testpmd_funcs.rst
> b/doc/guides/testpmd_app_ug/testpmd_funcs.rst
> > index f59eb8a27d..dd39c4c3c2 100644
> > --- a/doc/guides/testpmd_app_ug/testpmd_funcs.rst
> > +++ b/doc/guides/testpmd_app_ug/testpmd_funcs.rst
> > @@ -3742,7 +3742,8 @@ This section lists supported pattern items and their
> attributes, if any.
> >   - ``gtp_psc``: match GTP PDU extension header with type 0x85.
> >
> >     - ``pdu_type {unsigned}``: PDU type.
> > -  - ``qfi {unsigned}``: QoS flow identifier.
> > +
> > +  - ``qfi {unsigned}``: PPP, RQI and QoS flow identifier.
> >
> >   - ``pppoes``, ``pppoed``: match PPPoE header.
> >
> > diff --git a/lib/librte_ethdev/rte_flow.h b/lib/librte_ethdev/rte_flow.h
> > index 669e677e91..79106e0246 100644
> > --- a/lib/librte_ethdev/rte_flow.h
> > +++ b/lib/librte_ethdev/rte_flow.h
> > @@ -1392,14 +1392,14 @@ static const struct rte_flow_item_meta
> rte_flow_item_meta_mask = {
> >    */
> >   struct rte_flow_item_gtp_psc {
> >   	uint8_t pdu_type; /**< PDU type. */
> > -	uint8_t qfi; /**< QoS flow identifier. */
> > +	uint8_t qfi; /**< PPP, RQI, QoS flow identifier. */
> >   };
> 
> By design requirement, rte_flow_item_* should start with the relevant protocol
> header.
> 
> There is already a deprecation notice for using protocol header directly in the
> rte_flow_item* [1] and Adrew/Ivan already fixed a few of them [2].
> 
> Your patch is not directly related on this, but since you are touching to the
> flow_item, would you mind create a protocol struct for it first, and use it in
> the "struct rte_flow_item_gtp_psc"?
> So the protocol related update can be done in the protocol header, instead of
> rte_flow struct.
> 
+1

> 
> [1]
> https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgit.dpdk.
> org%2Fdpdk%2Ftree%2Fdoc%2Fguides%2Frel_notes%2Fdeprecation.rst%3Fh%3
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> 
> [2]
> https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgit.dpdk.
> org%2Fnext%2Fdpdk-next-
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