[Intel-wired-lan] [PATCH net-next v10 3/7] ixgbe: Add a RETA query command to VF-PF channel API
jeffrey.t.kirsher at intel.com
Tue Mar 31 07:35:27 UTC 2015
On Mon, 2015-03-30 at 21:35 +0300, Vlad Zolotarov wrote:
> Add this new command for 82599 and x540 devices only. Support for
> other devices
> will be added later.
> 82599 and x540 VFs and PF share the same RSS redirection table (RETA).
> Therefore we
> just return it for all VFs.
> 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
> step 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 <vladz at cloudius-systems.com>
> New in v10:
> - Drop the PRSTYPE reading since it's VF that finally modifies it
> (via VFPSRTYPE)
> and we will add the proper masking at the VF driver level.
> - Return more self-explaining values.
> New in v9:
> - Reduce the support to 82599 and x540 devices only.
> - Improvements in query RETA VF-PF command implementation:
> - Use the cached RETA contents.
> - Compress the mailbox message.
> 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
> only 82599 and x540.
> - Added the masking of the RETA entries according to the
> 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 | 4 +++
> drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c | 35
> 2 files changed, 39 insertions(+)
Thanks Vlad, applied to my queue.
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