netdev - Re: [PATCH v2 1/3] ixgbe, ixgbevf: Add new mbox API to enable MC promiscuous mode

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Date:	Thu, 19 Feb 2015 20:04:06 -0800
From:	Jeff Kirsher <jeffrey.t.kirsher@...el.com>
To:	Hiroshi Shimamoto <h-shimamoto@...jp.nec.com>
Cc:	"Skidmore, Donald C" <donald.c.skidmore@...el.com>,
	"vyasevic@...hat.com" <vyasevic@...hat.com>,
	Alexander Duyck <alexander.duyck@...il.com>,
	Bjørn Mork <bjorn@...k.no>,
	"e1000-devel@...ts.sourceforge.net" 
	<e1000-devel@...ts.sourceforge.net>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"Choi, Sy Jong" <sy.jong.choi@...el.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	David Laight <David.Laight@...LAB.COM>,
	Hayato Momma <h-momma@...jp.nec.com>
Subject: Re: [PATCH v2 1/3] ixgbe, ixgbevf: Add new mbox API to enable MC
 promiscuous mode

On Fri, 2015-02-20 at 00:59 +0000, Hiroshi Shimamoto wrote:
> From: Hiroshi Shimamoto <h-shimamoto@...jp.nec.com>
> 
> The limitation of the number of multicast address for VF is not enough
> for the large scale server with SR-IOV feature.
> IPv6 requires the multicast MAC address for each IP address to handle
> the Neighbor Solicitation message.
> We couldn't assign over 30 IPv6 addresses to a single VF interface.
> 
> The easy way to solve this is enabling multicast promiscuous mode.
> It is good to have a functionality to enable multicast promiscuous
> mode
> for each VF from VF driver.
> 
> This patch introduces the new mbox API, IXGBE_VF_SET_MC_PROMISC, to
> enable/disable multicast promiscuous mode in VF. If multicast
> promiscuous
> mode is enabled the VF can receive all multicast packets.
> 
> With this patch, the ixgbevf driver automatically enable multicast
> promiscuous mode when the number of multicast addresses is over than
> 30
> if possible.
> 
> This also bump the API version up to 1.2 to check whether the API,
> IXGBE_VF_SET_MC_PROMISC is available.
> 
> Signed-off-by: Hiroshi Shimamoto <h-shimamoto@...jp.nec.com>
> Reviewed-by: Hayato Momma <h-momma@...jp.nec.com>
> CC: Choi, Sy Jong <sy.jong.choi@...el.com>
> ---
> 
> This patchset is against Jeff's tree.
> 
> cfba326 e1000e: Fix 82574/82583 TimeSync errata handling for SYSTIM
> read
> 
> The tree hasn't haven the fix of the IPv6 checksum issue yet,
> but I cherry-picked the commit and tested.
> 
>  drivers/net/ethernet/intel/ixgbe/ixgbe.h          |  1 +
>  drivers/net/ethernet/intel/ixgbe/ixgbe_mbx.h      |  4 ++
>  drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c    | 88
> ++++++++++++++++++++++-
>  drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c | 13 +++-
>  drivers/net/ethernet/intel/ixgbevf/mbx.h          |  4 ++
>  drivers/net/ethernet/intel/ixgbevf/vf.c           | 28 +++++++-
>  drivers/net/ethernet/intel/ixgbevf/vf.h           |  1 +
>  7 files changed, 135 insertions(+), 4 deletions(-)

I have added this to my queue, thanks!

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