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From: Ferruh Yigit <ferruh.yigit@intel.com>
To: "Wei Hu (Xavier)" <huwei013@chinasoftinc.com>
Cc: Wenzhuo Lu <wenzhuo.lu@intel.com>,
	Beilei Xing <beilei.xing@intel.com>,
	Bernard Iremonger <bernard.iremonger@intel.com>,
	Shahaf Shuler <shahafs@mellanox.com>,
	Qi Zhang <qi.z.zhang@intel.com>,
	Andrew Rybchenko <arybchenko@solarflare.com>,
	Thomas Monjalon <thomas@monjalon.net>,
	dev@dpdk.org, xavier.huwei@huawei.com
Subject: Re: [dpdk-dev] [PATCH v2 4/4] app/testpmd: fix displaying Rx Tx queues information
Date: Wed, 16 Sep 2020 16:58:31 +0100
Message-ID: <23553e15-64c3-78a3-193a-7c9ad04d803c@intel.com> (raw)
In-Reply-To: <677a3cb4-cff0-56f3-bfee-422d4742ddd8@chinasoftinc.com>

On 9/16/2020 10:23 AM, Wei Hu (Xavier) wrote:
> Hi, Ferruh Yigit
> 
> On 2020/9/15 0:31, Ferruh Yigit wrote:
>> On 8/20/2020 2:42 AM, Wei Hu (Xavier) wrote:
>>> From: Huisong Li<lihuisong@huawei.com>
>>>
>>> Currently, the information of Rx/Tx queues from PMD driver is not displayed
>>> exactly in the rxtx_config_display function. Because "ports[pid].rx_conf"
>>> and "ports[pid].tx_conf" maintained in testpmd application may be not the
>>> value actually used by PMD driver. For instance, user does not set a field,
>>> but PMD driver has to use the default value.
>> Overall the question is why testpmd maintains the config values itself?
>> If this is testpmd implementation problem that is no big deal, but if
>> our APIs are forcing applications to maintain local copies that is
>> something to fix I think, which may lead the differences in application
>> copy and more troubles as you are fixing here.
> 
> I think it is a minor problem about displaying some information about 
> testpmd.
> 
> And it has no impact on the usage of application >

Agree this specific issue is minor problem, I already give the review tag.

And if the issue only concerns testpmd, still no big issue.

But I was questioning if this is sign of a design problem in DPDK APIs, 
which matters.

A simple question, why testpmd maintains the local version of the 
configuration?

And follow up can be,
Will it cause any functional problem if application always request 
configs from DPDK when needed instead of maintaining local copies? Are 
we missing APIs to do this?

> 
> Thanks,
> 
> Xavier
> 
>>> This patch fixes rxtx_config_display so that the information of Rx/Tx
>>> queues can be really displayed for the PMD driver that implement
>>> .rxq_info_get and .txq_info_get ops callback function.
>>>
>>> Fixes: 75c530c1bd5351 ("app/testpmd: fix port configuration print")
>>> Fixes: d44f8a485f5d1f ("app/testpmd: enable per queue configure")
>>> Cc:stable@dpdk.org
>>>
>>> Signed-off-by: Huisong Li<lihuisong@huawei.com>
>>> Signed-off-by: Wei Hu (Xavier)<xavier.huwei@huawei.com>
>> Reviewed-by: Ferruh Yigit<ferruh.yigit@intel.com>
>>


  reply	other threads:[~2020-09-16 15:58 UTC|newest]

Thread overview: 64+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-08-18 12:02 [dpdk-dev] [PATCH 0/4] minor fixes for testpmd Wei Hu (Xavier)
2020-08-18 12:02 ` [dpdk-dev] [PATCH 1/4] app/testpmd: fix missing verification of port id Wei Hu (Xavier)
2020-08-18 12:02 ` [dpdk-dev] [PATCH 2/4] app/testpmd: fix VLAN offload configuration when config fail Wei Hu (Xavier)
2020-08-18 12:02 ` [dpdk-dev] [PATCH 3/4] app/testpmd: fix packet header in txonly mode Wei Hu (Xavier)
2020-08-18 12:02 ` [dpdk-dev] [PATCH 4/4] app/testpmd: fix displaying Rx Tx queues information Wei Hu (Xavier)
2020-08-20  1:42 ` [dpdk-dev] [PATCH v2 0/4] minor fixes for testpmd Wei Hu (Xavier)
2020-08-20  1:42   ` [dpdk-dev] [PATCH v2 1/4] app/testpmd: fix missing verification of port id Wei Hu (Xavier)
2020-09-14 16:13     ` Ferruh Yigit
2020-08-20  1:42   ` [dpdk-dev] [PATCH v2 2/4] app/testpmd: fix VLAN offload configuration when config fail Wei Hu (Xavier)
2020-09-14 16:13     ` Ferruh Yigit
2020-08-20  1:42   ` [dpdk-dev] [PATCH v2 3/4] app/testpmd: fix packet header in txonly mode Wei Hu (Xavier)
2020-09-14 16:23     ` Ferruh Yigit
2020-09-17  7:10       ` Chengchang Tang
2020-09-17 11:16         ` Ferruh Yigit
2020-09-17 11:48           ` Chengchang Tang
2020-08-20  1:42   ` [dpdk-dev] [PATCH v2 4/4] app/testpmd: fix displaying Rx Tx queues information Wei Hu (Xavier)
2020-09-14 16:31     ` Ferruh Yigit
2020-09-16  9:23       ` Wei Hu (Xavier)
2020-09-16 15:58         ` Ferruh Yigit [this message]
2020-09-03  3:19   ` [dpdk-dev] [PATCH v2 0/4] minor fixes for testpmd Wei Hu (Xavier)
2020-09-19 10:47 ` [dpdk-dev] [PATCH v3 0/6] " Wei Hu (Xavier)
2020-09-19 10:47   ` [dpdk-dev] [PATCH v3 1/6] app/testpmd: fix missing verification of port id Wei Hu (Xavier)
2020-09-22 14:49     ` Ferruh Yigit
2020-09-19 10:47   ` [dpdk-dev] [PATCH v3 2/6] app/testpmd: fix VLAN offload configuration when config fail Wei Hu (Xavier)
2020-09-19 10:47   ` [dpdk-dev] [PATCH v3 3/6] app/testpmd: remove restriction on txpkts set Wei Hu (Xavier)
2020-09-22 14:51     ` Ferruh Yigit
2020-09-23  3:14       ` Wei Hu (Xavier)
2020-09-23 11:57         ` Wei Hu (Xavier)
2020-09-23 16:59           ` Ferruh Yigit
2020-09-24  6:08             ` Chengchang Tang
2020-09-24 12:19               ` Ferruh Yigit
2020-09-19 10:47   ` [dpdk-dev] [PATCH v3 4/6] app/testpmd: fix packet header in txonly mode Wei Hu (Xavier)
2020-09-19 10:47   ` [dpdk-dev] [PATCH v3 5/6] app/testpmd: fix valid desc id check Wei Hu (Xavier)
2020-09-22 14:53     ` Ferruh Yigit
2020-09-19 10:47   ` [dpdk-dev] [PATCH v3 6/6] app/testpmd: fix displaying Rx Tx queues information Wei Hu (Xavier)
2020-09-25 12:47 ` [dpdk-dev] [PATCH v4 0/6] minor fixes for testpmd Wei Hu (Xavier)
2020-09-25 12:47   ` [dpdk-dev] [PATCH v4 1/6] app/testpmd: fix missing verification of port id Wei Hu (Xavier)
2020-09-25 12:47   ` [dpdk-dev] [PATCH v4 2/6] app/testpmd: fix VLAN offload configuration when config fail Wei Hu (Xavier)
2020-09-25 12:47   ` [dpdk-dev] [PATCH v4 3/6] app/testpmd: remove restriction on txpkts set Wei Hu (Xavier)
2020-11-23 11:50     ` Slava Ovsiienko
2020-11-24 10:27       ` Thomas Monjalon
2020-11-24 12:23         ` Ferruh Yigit
2020-11-24 13:01           ` Kevin Traynor
2020-11-25 14:06           ` Ferruh Yigit
2020-11-26  7:24             ` Slava Ovsiienko
2020-11-26 12:38               ` Ferruh Yigit
2020-11-27 13:05                 ` Slava Ovsiienko
2020-12-02 12:07                   ` Ferruh Yigit
2020-12-03  9:45                     ` Slava Ovsiienko
2020-12-03 10:18                       ` Ferruh Yigit
2020-12-11 15:07                         ` [dpdk-dev] [PATCH] app/testpmd: fix segment number check Viacheslav Ovsiienko
2020-12-11 16:00                           ` Andrew Boyer
2020-12-11 16:14                             ` Slava Ovsiienko
2020-12-16 12:12                               ` Ferruh Yigit
2020-12-16 12:33                                 ` Slava Ovsiienko
2020-12-16 12:36                           ` Ferruh Yigit
2021-04-23 16:09                           ` [dpdk-dev] [PATCH v2] " Ferruh Yigit
2021-04-26 11:23                             ` Li, Xiaoyun
2021-04-27 11:42                               ` Ferruh Yigit
2020-09-25 12:47   ` [dpdk-dev] [PATCH v4 4/6] app/testpmd: fix packet header in txonly mode Wei Hu (Xavier)
2020-09-29 15:40     ` Ferruh Yigit
2020-09-25 12:47   ` [dpdk-dev] [PATCH v4 5/6] app/testpmd: fix valid desc id check Wei Hu (Xavier)
2020-09-25 12:47   ` [dpdk-dev] [PATCH v4 6/6] app/testpmd: fix displaying Rx Tx queues information Wei Hu (Xavier)
2020-09-29 15:40   ` [dpdk-dev] [PATCH v4 0/6] minor fixes for testpmd Ferruh Yigit

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