Merge branch 'mlx5-next' of git://git.kernel.org/pub/scm/linux/kernel/git/mellanox/linux

Saeed Mahameed says:

====================
mlx5-next 2021-04-09

This pr contains changes from  mlx5-next branch,
already reviewed on netdev and rdma mailing lists, links below.

1) From Leon, Dynamically assign MSI-X vectors count
Already Acked by Bjorn Helgaas.
https://patchwork.kernel.org/project/netdevbpf/cover/20210314124256.70253-1-leon@kernel.org/

2) Cleanup series:
https://patchwork.kernel.org/project/netdevbpf/cover/20210311070915.321814-1-saeed@kernel.org/

From Mark, E-Switch cleanups and refactoring, and the addition
of single FDB mode needed HW bits.

From Mikhael, Remove unused struct field

From Saeed, Cleanup W=1 prototype warning

From Zheng, Esw related cleanup

From Tariq, User order-0 page allocation for EQs

* 'mlx5-next' of git://git.kernel.org/pub/scm/linux/kernel/git/mellanox/linux:
  net/mlx5: Implement sriov_get_vf_total_msix/count() callbacks
  net/mlx5: Dynamically assign MSI-X vectors count
  net/mlx5: Add dynamic MSI-X capabilities bits
  PCI/IOV: Add sysfs MSI-X vector assignment interface
  net/mlx5: Use order-0 allocations for EQs
  net/mlx5: Add IFC bits needed for single FDB mode
  net/mlx5: E-Switch, Refactor send to vport to be more generic
  RDMA/mlx5: Use representor E-Switch when getting netdev and metadata
  net/mlx5: E-Switch, Add eswitch pointer to each representor
  net/mlx5: E-Switch, Add match on vhca id to default send rules
  net/mlx5: Remove unused mlx5_core_health member recover_work
  net/mlx5: simplify the return expression of mlx5_esw_offloads_pair()
  net/mlx5: Cleanup prototype warning
====================

Link: https://lore.kernel.org/r/20210409200704.10886-1-saeed@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

1 files changed, 29 insertions, 0 deletions

diff --git a/Documentation/ABI/testing/sysfs-bus-pci b/Documentation/ABI/testing/sysfs-bus-pci
index 25c9c39770c6..e5cfd170b491 100644
--- a/Documentation/ABI/testing/sysfs-bus-pci
+++ b/Documentation/ABI/testing/sysfs-bus-pci
@@ -375,3 +375,32 @@ Description:
 		The value comes from the PCI kernel device state and can be one
 		of: "unknown", "error", "D0", D1", "D2", "D3hot", "D3cold".
 		The file is read only.
+
+What:		/sys/bus/pci/devices/.../sriov_vf_total_msix
+Date:		January 2021
+Contact:	Leon Romanovsky <leonro@nvidia.com>
+Description:
+		This file is associated with a SR-IOV physical function (PF).
+		It contains the total number of MSI-X vectors available for
+		assignment to all virtual functions (VFs) associated with PF.
+		The value will be zero if the device doesn't support this
+		functionality. For supported devices, the value will be
+		constant and won't be changed after MSI-X vectors assignment.
+
+What:		/sys/bus/pci/devices/.../sriov_vf_msix_count
+Date:		January 2021
+Contact:	Leon Romanovsky <leonro@nvidia.com>
+Description:
+		This file is associated with a SR-IOV virtual function (VF).
+		It allows configuration of the number of MSI-X vectors for
+		the VF. This allows devices that have a global pool of MSI-X
+		vectors to optimally divide them between VFs based on VF usage.
+
+		The values accepted are:
+		 * > 0 - this number will be reported as the Table Size in the
+			 VF's MSI-X capability
+		 * < 0 - not valid
+		 * = 0 - will reset to the device default value
+
+		The file is writable if the PF is bound to a driver that
+		implements ->sriov_set_msix_vec_count().