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From: Maxime Coquelin <maxime.coquelin@redhat.com>
To: David Marchand <david.marchand@redhat.com>,
	"Wang, Xiao W" <xiao.w.wang@intel.com>
Cc: "Xia, Chenbo" <chenbo.xia@intel.com>,
	"Liu, Yong" <yong.liu@intel.com>, dev <dev@dpdk.org>,
	"Ananyev, Konstantin" <konstantin.ananyev@intel.com>,
	dpdk stable <stable@dpdk.org>,
	"yangyi01@inspur.com" <yangyi01@inspur.com>
Subject: Re: [dpdk-stable] [PATCH v3] vhost: add header check in dequeue offload
Date: Tue, 13 Apr 2021 16:30:31 +0200
Message-ID: <5ddd6f84-e607-f19f-2fb8-8988db6a7627@redhat.com> (raw)
In-Reply-To: <CAJFAV8xE8JDnMM82ATOFPgtf3bCNQnYBETzUj2tHG5HnWTD4Rg@mail.gmail.com>



On 4/12/21 11:33 AM, David Marchand wrote:
> On Mon, Apr 12, 2021 at 11:09 AM Wang, Xiao W <xiao.w.wang@intel.com> wrote:
>> Considering the major consumer of vhost API is virtual switch/router, I tend to keep the current implementation and apply this fix patch.
>> Any comments?
> 
> This is just a hack that bypasses the vswitch control.
> 
> It happens to work when the vswitch does nothing.
> If anything is done, like popping a vlan header, the vswitch needs to
> update l3 offset.
> 
> 

I agree with David, current behavior is wrong.

Furthermore, when the lib is used via the Vhost PMD, the application
should not have to handle it differently on whether it is Vhost PMD or
any physical NIC PMD.


      reply	other threads:[~2021-04-13 14:30 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-03-11  6:38 [dpdk-stable] [PATCH] " Xiao Wang
2021-03-11 10:38 ` [dpdk-stable] [dpdk-dev] " Ananyev, Konstantin
2021-03-12 15:19   ` Wang, Xiao W
2021-03-15 15:32 ` [dpdk-stable] [PATCH v2] " Xiao Wang
2021-03-15 16:17   ` David Marchand
2021-03-15 18:53     ` Ananyev, Konstantin
2021-03-16  9:13       ` Wang, Xiao W
2021-03-17  6:31 ` [dpdk-stable] [PATCH v3] " Xiao Wang
2021-04-01 12:04   ` David Marchand
2021-04-02  8:38     ` Wang, Xiao W
2021-04-12  9:08       ` Wang, Xiao W
2021-04-12  9:33         ` David Marchand
2021-04-13 14:30           ` Maxime Coquelin [this message]

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