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From: Roopa Prabhu <roprabhu@cisco.com>
To: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Sridhar Samudrala <sri@us.ibm.com>, <netdev@vger.kernel.org>,
	<dragos.tatulea@gmail.com>, <arnd@arndb.de>, <dwang2@cisco.com>,
	<benve@cisco.com>, <kaber@trash.net>, <davem@davemloft.net>,
	<eric.dumazet@gmail.com>, <mchan@broadcom.com>,
	<kvm@vger.kernel.org>
Subject: Re: [net-next-2.6 PATCH 0/3 RFC] macvlan: MAC Address filtering support for passthru mode
Date: Thu, 08 Sep 2011 20:00:53 -0700	[thread overview]
Message-ID: <CA8ECF75.33BFF%roprabhu@cisco.com> (raw)
In-Reply-To: <20110908193332.GA2476@redhat.com>




On 9/8/11 12:33 PM, "Michael S. Tsirkin" <mst@redhat.com> wrote:

> On Thu, Sep 08, 2011 at 12:23:56PM -0700, Roopa Prabhu wrote:
>>> 
>>> I think the main usecase for passthru mode is to assign a SR-IOV VF to
>>> a single guest.
>>> 
>> Yes and for the passthru usecase this patch should be enough to enable
>> filtering in hw (eventually like I indicated before I need to fix vlan
>> filtering too).
> 
> So with filtering in hw, and in sriov VF case, VFs
> actually share a filtering table. How will that
> be partitioned?

AFAIK, though it might maintain a single filter table space in hw, hw does
know which filter belongs to which VF. And the OS driver does not need to do
anything special. The VF driver exposes a VF netdev. And any uc/mc addresses
registered with a VF netdev are registered with the hw by the driver. And hw
will filter and send only pkts that the VF has expressed interest in.

No special filter partitioning in hw is required.

Thanks,
Roopa


  reply	other threads:[~2011-09-09  3:00 UTC|newest]

Thread overview: 32+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-09-06 22:35 [net-next-2.6 PATCH 0/3 RFC] macvlan: MAC Address filtering support for passthru mode Roopa Prabhu
2011-09-06 22:35 ` [net-next-2.6 PATCH 1/3 RFC] macvlan: Add support for unicast filtering in macvlan Roopa Prabhu
2011-09-06 22:35 ` [net-next-2.6 PATCH 2/3 RFC] macvlan: Add function to set addr filters for device in passthru mode Roopa Prabhu
2011-09-06 22:35 ` [net-next-2.6 PATCH 3/3 RFC] macvtap: Add support for TUNSETTXFILTER Roopa Prabhu
2011-09-08 16:25   ` Arnd Bergmann
2011-09-08 19:06     ` Roopa Prabhu
2011-09-07 12:34 ` [net-next-2.6 PATCH 0/3 RFC] macvlan: MAC Address filtering support for passthru mode Michael S. Tsirkin
2011-09-08  5:20   ` Roopa Prabhu
2011-09-08 11:08     ` Michael S. Tsirkin
2011-09-08 16:19       ` Roopa Prabhu
2011-09-08 17:42         ` Sridhar Samudrala
2011-09-08 19:23           ` Roopa Prabhu
2011-09-08 19:33             ` Michael S. Tsirkin
2011-09-09  3:00               ` Roopa Prabhu [this message]
2011-09-09  4:25                 ` Sridhar Samudrala
2011-09-09 16:21                   ` Roopa Prabhu
2011-09-11  9:44                 ` Michael S. Tsirkin
2011-09-11 13:18                   ` Roopa Prabhu
2011-09-11 19:03                     ` Michael S. Tsirkin
2011-09-12 17:02                       ` Roopa Prabhu
2011-09-15 13:46                         ` Roopa Prabhu
2011-09-26 23:06                           ` Christian Benvenuti (benve)
2011-09-12  4:30                     ` Sridhar Samudrala
2011-09-12 17:23                       ` Roopa Prabhu
2011-09-08 19:11         ` Michael S. Tsirkin
2011-09-09  2:53           ` Roopa Prabhu
2011-09-09  5:55             ` Michael S. Tsirkin
2011-09-09 16:33               ` Roopa Prabhu
2011-09-11  9:38                 ` Michael S. Tsirkin
2011-09-11 13:18                   ` Roopa Prabhu
2011-09-11 18:52                     ` Michael S. Tsirkin
2011-09-12 13:38                       ` Roopa Prabhu

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