Re: [PATCH v3 1/3] ixgbe, ixgbevf: Add new mbox API to enable MC promiscuous mode

[Jeff Kirsher <jeffrey.t.kirsher@intel.com>]

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On Wed, 2015-04-08 at 05:36 +0000, Hiroshi Shimamoto wrote:
> From: Hiroshi Shimamoto <h-shimamoto@ct.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.
> 
> Signed-off-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com>
> Reviewed-by: Hayato Momma <h-momma@ce.jp.nec.com>
> CC: Choi, Sy Jong <sy.jong.choi@intel.com>
> ---
> 
> This adds new mbox API, but doesn't change the version because
> v1.3 was newly added in the current dev-queue.
> Is that okay, or shall I increment the version?
> 
>  drivers/net/ethernet/intel/ixgbe/ixgbe.h          |  1 +
>  drivers/net/ethernet/intel/ixgbe/ixgbe_mbx.h      |  2 +
>  drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c    | 76
> +++++++++++++++++++++++
>  drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c |  3 +
>  drivers/net/ethernet/intel/ixgbevf/mbx.h          |  2 +
>  drivers/net/ethernet/intel/ixgbevf/vf.c           | 27 +++++++-
>  drivers/net/ethernet/intel/ixgbevf/vf.h           |  1 +
>  7 files changed, 111 insertions(+), 1 deletion(-)

I will add this to my queue, thanks Hiroshi.

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