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From: "Ouyang, Changchun" <changchun.ouyang@intel.com>
To: Stephen Hemminger <stephen@networkplumber.org>
Cc: "dev@dpdk.org" <dev@dpdk.org>
Subject: Re: [dpdk-dev] [RFC 06/10] virtio: use software vlan stripping
Date: Wed, 27 Aug 2014 05:42:09 +0000
Message-ID: <F52918179C57134FAEC9EA62FA2F96251183B79C@shsmsx102.ccr.corp.intel.com> (raw)
In-Reply-To: <20140826092420.57e95493@urahara>


> -----Original Message-----
> From: Stephen Hemminger [mailto:stephen@networkplumber.org]
> Sent: Wednesday, August 27, 2014 12:24 AM
> To: Ouyang, Changchun
> Cc: dev@dpdk.org
> Subject: Re: [RFC 06/10] virtio: use software vlan stripping
> 
> On Tue, 26 Aug 2014 08:37:11 +0000
> "Ouyang, Changchun" <changchun.ouyang@intel.com> wrote:
> 
> > Hi Stephen,
> >
> > Would you please describe the use scenario for the front end rx vlan strip
> and tx vlan insertion?
> > In our current implementation, backend will strip vlan tag for RX, and insert
> vlan tag for TX.
> >
> > Thanks
> > Changchun
> 
> First, we don't have to do software VLAN strip on our backend if we do this.
> And this way we can always use VLAN insert on transmit. Otherwise you
> have to introduce special case because there is no DPDK API to determine if
> device does or does not do VLAN handling.
> 

How the virtio frontend tell backend whether it has software VLAN strip feature or not?
It seems no feature bit to negotiate it.

Thanks
Changchun

  reply	other threads:[~2014-08-27  5:38 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-08-26  2:07 [dpdk-dev] [RFC 00/10] virtio patches Stephen Hemminger
2014-08-26  2:07 ` [dpdk-dev] [RFC 01/10] virtio: rearrange resource initialization Stephen Hemminger
2014-08-26  7:14   ` Ouyang, Changchun
2014-08-26  2:07 ` [dpdk-dev] [RFC 02/10] virtio: use weak barriers Stephen Hemminger
2014-08-26  2:07 ` [dpdk-dev] [RFC 03/10] virtio: allow starting with link down Stephen Hemminger
2014-08-26  2:07 ` [dpdk-dev] [RFC 04/10] virtio: add support for Link State interrupt Stephen Hemminger
2014-08-26  2:07 ` [dpdk-dev] [RFC 05/10] ether: add soft vlan encap/decap functions Stephen Hemminger
2014-08-26  2:07 ` [dpdk-dev] [RFC 06/10] virtio: use software vlan stripping Stephen Hemminger
2014-08-26  8:37   ` Ouyang, Changchun
2014-08-26 16:24     ` Stephen Hemminger
2014-08-27  5:42       ` Ouyang, Changchun [this message]
2014-08-27 18:04         ` Stephen Hemminger
2014-08-26  2:07 ` [dpdk-dev] [RFC 07/10] virtio: remove unnecessary adapter structure Stephen Hemminger
2014-08-26  6:43   ` Ouyang, Changchun
2014-08-26  2:07 ` [dpdk-dev] [RFC 08/10] virtio: remove redundant vq_alignment Stephen Hemminger
2014-08-26  8:41   ` Ouyang, Changchun
2014-08-26  2:07 ` [dpdk-dev] [RFC 09/10] virtio: fix how states are handled during initialization Stephen Hemminger
2014-08-26  2:07 ` [dpdk-dev] [RFC 10/10] virtio: add support for promiscious and multicast Stephen Hemminger
2014-08-26  6:55   ` Ouyang, Changchun

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