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From: Phil Yang <Phil.Yang@arm.com>
To: Ferruh Yigit <ferruh.yigit@intel.com>,
	oulijun <oulijun@huawei.com>,
	"wenzhuo.lu@intel.com" <wenzhuo.lu@intel.com>,
	"beilei.xing@intel.com" <beilei.xing@intel.com>,
	"adrien.mazarguil@6wind.com" <adrien.mazarguil@6wind.com>
Cc: "dev@dpdk.org" <dev@dpdk.org>,
	"linuxarm@huawei.com" <linuxarm@huawei.com>, nd <nd@arm.com>,
	nd <nd@arm.com>
Subject: Re: [dpdk-dev] [PATCH v4] RSS key use with testpmd
Date: Sat, 10 Oct 2020 03:07:08 +0000
Message-ID: <DB7PR08MB3865DB3A9434064C139427DAE9090@DB7PR08MB3865.eurprd08.prod.outlook.com> (raw)
In-Reply-To: <46956bf5-54ff-c8b6-74de-a6338c6d5d3a@intel.com>

Ferruh Yigit <ferruh.yigit@intel.com> wrote:

> Sent: Saturday, October 10, 2020 2:53 AM
> To: oulijun <oulijun@huawei.com>; wenzhuo.lu@intel.com;
> beilei.xing@intel.com; adrien.mazarguil@6wind.com; Phil Yang
> <Phil.Yang@arm.com>
> Cc: dev@dpdk.org; linuxarm@huawei.com
> Subject: Re: [PATCH v4] RSS key use with testpmd
> 
> On 10/9/2020 1:09 PM, oulijun wrote:
> >
> >
> > 在 2020/9/30 21:17, Ferruh Yigit 写道:
> >> On 9/24/2020 2:45 PM, Lijun Ou wrote:
> >>> Consider the follow usage with testpmd:
> >>> 1. first, startup testpmd:
> >>> testpmd> show port 0 rss-hash key
> >>> RSS functions:
> >>>   all ipv4-frag ipv4-other ipv6-frag ipv6-other ip
> >>> RSS key:
> >>>
> 6D5A56DA255B0EC24167253D43A38FB0D0CA2BCBAE7B30B477CB2DA38030F
> >>> 20C6A42B73BBEAC01FA
> >>> 2. create a rss rule
> >>> testpmd> flow create 0 ingress pattern eth / ipv4 / udp / end actions rss
> \
> >>> types ipv4-udp end queues end / end
> >>>
> >>> 3. show rss-hash key
> >>> testpmd> show port 0 rss-hash key
> >>> RSS functions:
> >>>   all ipv4-udp udp
> >>> RSS key:
> >>>
> 74657374706D6427732064656661756C74205253532068617368206B65792C206F
> >>> 76657272696465
> >>>
> >>> As a result, the step 3 with RSS key and the step 1 RSS key
> >>> is not the same. The patch[1] to solve the above problems.
> >>>
> >>
> >> This is interesting, can you please provide above information in the
> commit
> >> log too?
> >>
> > Yes, I submitted detailed operation information in patch v3 as a commit,
> and
> > Yang suggested that the operation information be included in the cover
> letter.
>  >
> 
> OK, understood.
> Only, commands helped me to understand the problem, it is easy to grasp
> the
> issue with samples, so I thought it may help others later in if it is in the
> commit log, since cover letter won't be visible in the git repo.
> 
> @Phil, will you be OK to have them in the commit log if the checkpatch
> warnings
> fixed?

Yeah. It is OK. 


> 
> >> Also can you please provide the details on why this happens, callstack can
> help?
> >>
> > When you start the testpmd, the pmd driver initializes the RSS
> configuration.
> > Generally, the recommended RSS hash key is used as the default key in the
> > driver. In addition, the default key is different from the default RSS flow in
> > testpmd without specifying RSS hash key.
> > So, if you do not specify the RSS key when creating an RSS rule, the
> testpmd
> > uses the default key as the default RSS key of the RSS rule.As a result, you
> may
> > mistakenly consider that the RSS key in use is the valid default key of the
> NIC,
> > actually, the key and the valid default key of the NIC are two values.
> 
> Above description looks good, can you include this to the commit log please?
> 
> >> Thanks,
> >> ferruh
> >>
> >>
> >>> Lijun Ou (1):
> >>>    app/testpmd: fix the default RSS key configuration
> >>>
> >>>   app/test-pmd/cmdline_flow.c | 8 ++++++++
> >>>   1 file changed, 8 insertions(+)
> >>>
> >>
> >> .
> >>


  reply index

Thread overview: 43+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-09-10  1:51 [dpdk-dev] [PATCH v3] app/testpmd: fix the default RSS key configuration Lijun Ou
2020-09-22  9:51 ` Phil Yang
2020-09-22 13:50   ` oulijun
2020-09-22 15:44     ` Phil Yang
2020-09-24 13:45 ` [dpdk-dev] [PATCH v4] RSS key use with testpmd Lijun Ou
2020-09-24 13:45   ` [dpdk-dev] [PATCH v4] app/testpmd: fix the default RSS key configuration Lijun Ou
2020-09-29 15:35     ` Phil Yang
2020-09-30 12:57     ` Ferruh Yigit
2020-10-09 11:55       ` oulijun
2020-10-09 18:27         ` Ferruh Yigit
2020-10-09 18:54           ` Ferruh Yigit
2020-09-30 13:36     ` Ferruh Yigit
2020-10-09 11:59       ` oulijun
2020-10-09 18:36         ` Ferruh Yigit
2020-10-15 12:41     ` [dpdk-dev] [PATCH v5] " Lijun Ou
2020-10-15 13:52       ` Ferruh Yigit
2020-10-15 14:04         ` oulijun
2020-10-15 14:43           ` Ferruh Yigit
2020-10-15 16:05             ` Ferruh Yigit
2020-10-15 23:21               ` Ophir Munk
2020-10-15 23:53                 ` Ferruh Yigit
2020-10-16  0:14                   ` Ajit Khaparde
2020-10-16  6:46                   ` Ophir Munk
2020-10-16 10:05                     ` oulijun
2020-10-16 15:13                       ` Ophir Munk
2020-10-16 10:04                   ` oulijun
2020-10-16 10:57                     ` Ferruh Yigit
2020-10-16 14:59                       ` Ophir Munk
2020-10-20  9:00                       ` oulijun
2020-10-20 10:02                         ` Ferruh Yigit
2020-10-20 13:35                           ` oulijun
2020-10-20 14:34                             ` Ferruh Yigit
2020-10-21  8:19                               ` oulijun
2020-10-21  9:38                                 ` Ferruh Yigit
2020-10-21 10:07                                   ` oulijun
     [not found]       ` <20201015195637.26476-1-robot@bytheb.org>
2020-10-16  9:39         ` [dpdk-dev] |WARNING| pw80899 " oulijun
2020-10-16  9:41           ` David Marchand
2020-09-30 13:17   ` [dpdk-dev] [PATCH v4] RSS key use with testpmd Ferruh Yigit
2020-10-09 12:09     ` oulijun
2020-10-09 18:52       ` Ferruh Yigit
2020-10-10  3:07         ` Phil Yang [this message]
2020-10-14  6:15         ` oulijun
2020-10-14  8:41           ` Ferruh Yigit

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