[RFC v3] ethdev: introduce ethdev dump API

[Ferruh Yigit]

On 1/25/2022 12:56 PM, Ferruh Yigit wrote:
> On 1/18/2022 3:34 PM, Ajit Khaparde wrote:
>> On Wed, Jan 12, 2022 at 4:06 AM Ray Kinsella <mdr at ashroe.eu> wrote:
>>>
>>>
>>> Min Hu (Connor) <humin29 at huawei.com> writes:
>>>
>>>> Added the ethdev dump API which provides functions for query private info
>>>> from device. There exists many private properties in different PMD drivers,
>>>> such as adapter state, Rx/Tx func algorithm in hns3 PMD. The information of
>>>> these properties is important for debug. As the information is private,
>>>> the new API is introduced.
>>>>
>>>> Signed-off-by: Min Hu (Connor) <humin29 at huawei.com>
>>>> Acked-by: Morten BrÞrup <mb at smartsharesystems.com>
>>>> ---
>>>> v3:
>>>> * fix comment.
>>>> * add rte_eth_dev_priv_dump to version.map file.
>>>>
>>>> v2:
>>>> * fix dump API name
>>>> * adjust description in doc.
>>>> ---
>>>>   doc/guides/rel_notes/release_22_03.rst |  7 +++++++
>>>>   lib/ethdev/ethdev_driver.h             | 17 +++++++++++++++++
>>>>   lib/ethdev/rte_ethdev.c                | 15 +++++++++++++++
>>>>   lib/ethdev/rte_ethdev.h                | 16 ++++++++++++++++
>>>>   lib/ethdev/version.map                 |  3 +++
>>>>   5 files changed, 58 insertions(+)
>>>>
>>>
>>> Acked-by: Ray Kinsella <mdr at ashroe.eu>
>> Acked-by: Ajit Khaparde <ajit.khaparde at broadcom.com>
> 
> 
> I have a concern and this "private info", it can be useful for debug
> but still it will lead to a PMD specific applications, I wonder if some
> common information can be provided. Is there any list in your mind what
> can be part of this private info?
> 
> Also why not use existing xstats or telemetry to get more data from the
> drivers?
> As synced with Ciara (cc'ed), she mentioned more information can be get
> via registering callbacks to ethdev.

Opps, Ciara (Power) cc'ed now.