On Sun, 2015-03-22 at 21:01 +0200, Vlad Zolotarov wrote:

82599 and x540 VFs and PF share the same RSS redirection table (RETA).
Therefore we
just return it for all VFs. x550 on the other hand provides a separate
redirection
table for each VF (there is a per-pool RETA table).

For 82599 and x540 RETA table is an array of 32 registers (128 bytes)
and the maximum number of
registers that may be delivered in a single VF-PF channel command is
15. Therefore
we will deliver the whole table in 3 steps: 12, 12 and 8 registers in
each
step correspondingly.

For x550 VFs RETA is a 64 byte array, so we may deliver it in two
steps: 12 and 4 registers
correspondingly.

Thus this patch does the following:

  - Adds a new API version (to specify a new commands set).
  - Adds the IXGBE_VF_GET_RETA command to the VF-PF commands set.

Signed-off-by: Vlad Zolotarov <redacted>
---
New in v5:
   - Use the newly added netdev op to allow/prevent the RETA query on
a per-VF basis.

New in v4:
   - Deleted an empty line in ixgbe_get_vf_reta() switch-case.

New in v3:
   - Pass the number of dwords and offset in RETA in the
IXGBE_VF_GET_RETA request message.
     This allows to reduce the added command set to a single command.
   - Added a support for all devices supported by the ixgbe driver
that have
     SR-IOV functions support: 82599, x540 and x550. The original code
supported
     only 82599 and x540.
   - Added the masking of the RETA entries according to the
PSRTYPE[n].RQPL
     value.

New in v1 (compared to RFC):
   - Use "if-else" statement instead of a "switch-case" for a single
option case
     (in ixgbe_get_vf_reta()).
---
 drivers/net/ethernet/intel/ixgbe/ixgbe_mbx.h   |  8 ++++
 drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c | 65
++++++++++++++++++++++++++
 2 files changed, 73 insertions(+)

Thanks Vlad, I have applied your patch to my next-queue tree
-- 
git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/next-queue.git
dev-queue