Hi, This series adds devlink per-port resource support. See detailed description by Or below [1].
Regards, Tariq [1] Currently, devlink resources are only available at the device level. However, some resources are inherently per-port, such as the maximum number of subfunctions (SFs) that can be created on a specific PF port. This limitation prevents user space from obtaining accurate per-port capacity information. This series adds infrastructure for per-port resources in devlink core and implements it in the mlx5 driver to expose the max_SFs resource on PF devlink ports. Patch #1 adds dump support for device-level resources Patch #2 adds selftest for resource dump Patch #3 adds dump to resource documentation Patch #4 refactors resource functions to be generic Patch #5 adds port-level resource registration infrastructure Patch #6 adds port resource netlink command Patch #7 registers SF resource on PF port representor in mlx5 Patch #8 adds devlink port resource registration to netdevsim for testing Patch #9 adds selftest for devlink port resources Patch #10 documents port-level resources With this series, users can query per-port resources: $ devlink port resource show pci/0000:03:00.0/196608 pci/0000:03:00.0/196608: name max_SFs size 20 unit entry $ devlink port resource show pci/0000:03:00.0/196608: name max_SFs size 20 unit entry pci/0000:03:00.1/262144: name max_SFs size 20 unit entry Userspace patches for iproute2: https://github.com/ohartoov/iproute2/tree/port_resource V3: - Add dump command for device-level resources. - Fix selftest to expect the "test_resource" registered by netdevsim instead of max_SFs. - Use a single netlink fill function for both device-level and port-level resources. - Fix documentation to refer to the GET command (kernel/netlink perspective) instead of show. - Link to V2: https://lore.kernel.org/all/[email protected]/ Or Har-Toov (10): devlink: Add dump support for device-level resources selftest: netdevsim: Add resource dump test devlink: Add dump to resource documentation devlink: Refactor resource functions to be generic devlink: Add port-level resource registration infrastructure devlink: Add port resource netlink command net/mlx5: Register SF resource on PF port representor netdevsim: Add devlink port resource registration selftest: netdevsim: Add devlink port resource test devlink: Document port-level resources Documentation/netlink/specs/devlink.yaml | 29 +- .../networking/devlink/devlink-resource.rst | 60 ++- .../net/ethernet/mellanox/mlx5/core/devlink.h | 4 + .../mellanox/mlx5/core/esw/devlink_port.c | 37 ++ drivers/net/netdevsim/dev.c | 23 +- drivers/net/netdevsim/netdevsim.h | 4 + include/net/devlink.h | 10 +- include/uapi/linux/devlink.h | 3 + net/devlink/devl_internal.h | 4 + net/devlink/netlink.c | 2 +- net/devlink/netlink_gen.c | 49 ++- net/devlink/netlink_gen.h | 8 +- net/devlink/port.c | 3 + net/devlink/resource.c | 366 +++++++++++++++--- .../drivers/net/netdevsim/devlink.sh | 53 ++- 15 files changed, 581 insertions(+), 74 deletions(-) base-commit: 90fcb0f3bc5ab67773b35030af68ed8c6bd83e1c -- 2.44.0
