On 3/29/2021 10:06 AM, Raslan Darawsheh wrote:
Hi,

-----Original Message-----
From: Ori Kam <or...@nvidia.com>
Sent: Monday, March 29, 2021 11:53 AM
To: Ferruh Yigit <ferruh.yi...@intel.com>; Raslan Darawsheh
<rasl...@nvidia.com>; dev@dpdk.org; Andrew Rybchenko
<andrew.rybche...@oktetlabs.ru>; Ivan Malov <ivan.ma...@oktetlabs.ru>
Cc: Slava Ovsiienko <viachesl...@nvidia.com>; Shiri Kuzin
<shi...@nvidia.com>; ying.a.w...@intel.com; sta...@dpdk.org; NBU-
Contact-Thomas Monjalon <tho...@monjalon.net>; Olivier Matz
<olivier.m...@6wind.com>
Subject: RE: [dpdk-dev] [PATCH] ethdev: update qfi definition

Hi

-----Original Message-----
From: dev <dev-boun...@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?

Sure, will send in V2,

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.w...@intel.com
Cc: sta...@dpdk.org

Signed-off-by: Raslan Darawsheh <rasl...@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
Sure, I can create the new protocol and use it , and will send in V2. But, 
wouldn't it cause any ABI breakage ?

For the protocol header, it won't be problem since it is a new struct.

For the flow item struct, it may be, that is why need to use a union for now, please check what Adrew/Ivan did.



[1]

https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgit.d
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org%2Fdpdk%2Ftree%2Fdoc%2Fguides%2Frel_notes%2Fdeprecation.rst%3F
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[2]

https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgit.d
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net%2Fcommit%2F%3Fid%3D4a061a7bd70bfa023de23e8e654e&amp;data=0
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nknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI
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