netdev - [PATCH iwl-next v2 0/4] change MSI-X vectors per VF

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Date: Mon, 18 Sep 2023 08:24:02 +0200
From: Michal Swiatkowski <michal.swiatkowski@...ux.intel.com>
To: intel-wired-lan@...ts.osuosl.org
Cc: netdev@...r.kernel.org,
	jacob.e.keller@...el.com,
	przemyslaw.kitszel@...el.com,
	maciej.fijalkowski@...el.com,
	Michal Swiatkowski <michal.swiatkowski@...ux.intel.com>
Subject: [PATCH iwl-next v2 0/4] change MSI-X vectors per VF

Hi,

This patchset is implementing sysfs API introduced here [1].

It will allow user to assign different amount of MSI-X vectors to VF.
For example when there are VMs with different number of virtual cores.

Example:
1. Turn off autoprobe
echo 0 > /sys/bus/pci/devices/0000\:18\:00.0/sriov_drivers_autoprobe
2. Create VFs
echo 4 > /sys/bus/pci/devices/0000\:18\:00.0/sriov_numvfs
3. Configure MSI-X
echo 20 > /sys/class/pci_bus/0000\:18/device/0000\:18\:01.0/sriov_vf_msix_count

v1 --> v2: [2] (Sorry for long time between versions)
 * rebase
 * reword commit message in ice: implement num_msix field per VF

[1] https://lore.kernel.org/netdev/20210314124256.70253-1-leon@kernel.org/
[2] https://lore.kernel.org/netdev/20230615123830.155927-1-michal.swiatkowski@linux.intel.com/

Michal Swiatkowski (4):
  ice: implement num_msix field per VF
  ice: add bitmap to track VF MSI-X usage
  ice: set MSI-X vector count on VF
  ice: manage VFs MSI-X using resource tracking

 drivers/net/ethernet/intel/ice/ice.h          |   2 +
 drivers/net/ethernet/intel/ice/ice_lib.c      |   2 +-
 drivers/net/ethernet/intel/ice/ice_main.c     |   2 +
 drivers/net/ethernet/intel/ice/ice_sriov.c    | 257 ++++++++++++++++--
 drivers/net/ethernet/intel/ice/ice_sriov.h    |  13 +
 drivers/net/ethernet/intel/ice/ice_vf_lib.h   |   4 +-
 drivers/net/ethernet/intel/ice/ice_virtchnl.c |   2 +-
 7 files changed, 258 insertions(+), 24 deletions(-)

-- 
2.41.0