ice: set MSI-X vector count on VF

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Implement ops needed to set MSI-X vector count on VF.

sriov_get_vf_total_msix() should return total number of MSI-X that can
be used by the VFs. Return the value set by devlink resources API
(pf->req_msix.vf).

sriov_set_msix_vec_count() will set number of MSI-X on particular VF.
Disable VF register mapping, rebuild VSI with new MSI-X and queues
values and enable new VF register mapping.

For best performance set number of queues equal to number of MSI-X.

Signed-off-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com>
Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Tested-by: Rafal Romanowski <rafal.romanowski@intel.com>
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Michal Swiatkowski 2023-10-19 10:32:22 -07:00 • committed by David S. Miller

parent ea4af9b400

commit 05c16687e0

3 changed files with 84 additions and 0 deletions

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2

drivers/net/ethernet/intel/ice/ice_main.c

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69

drivers/net/ethernet/intel/ice/ice_sriov.c

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13

drivers/net/ethernet/intel/ice/ice_sriov.h

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