[net-next,v4,0/7] net/mlx5: Memory optimizations

Message

Shay Drori Dec. 9, 2021, 10:09 a.m. UTC

This series provides knobs which will enable users to
minimize memory consumption of mlx5 Functions (PF/VF/SF).
mlx5 exposes two new generic devlink params for EQ size
configuration and uses devlink generic param max_macs.

Patches summary:
 - Patch-1 Introduce log_max_current_uc_list_wr_supported bit 
 - Patches-2-3 Provides I/O EQ size param which enables to save
   up to 128KB.
 - Patches-4-5 Provides event EQ size param which enables to save
   up to 512KB.
 - Patch-6 Clarify max_macs param.
 - Patch-7 Provides max_macs param which enables to save up to 70KB

In total, this series can save up to 700KB per Function.

---
changelog:
v3->v4:
- align devlink_param doc of EQ size params to u32.
v2->v3:
- change type of EQ size params to u32 per Jiri suggestion.
- separate ifc changes to new patch
v1->v2:
- convert io_eq_size and event_eq_size from devlink_resources to
  generic devlink_params

Shay Drory (7):
  net/mlx5: Introduce log_max_current_uc_list_wr_supported bit
  devlink: Add new "io_eq_size" generic device param
  net/mlx5: Let user configure io_eq_size param
  devlink: Add new "event_eq_size" generic device param
  net/mlx5: Let user configure event_eq_size param
  devlink: Clarifies max_macs generic devlink param
  net/mlx5: Let user configure max_macs generic param

 .../networking/devlink/devlink-params.rst     | 12 ++-
 Documentation/networking/devlink/mlx5.rst     | 10 +++
 .../net/ethernet/mellanox/mlx5/core/devlink.c | 88 +++++++++++++++++++
 drivers/net/ethernet/mellanox/mlx5/core/eq.c  | 34 ++++++-
 .../net/ethernet/mellanox/mlx5/core/main.c    | 21 +++++
 include/linux/mlx5/mlx5_ifc.h                 |  2 +-
 include/net/devlink.h                         |  8 ++
 net/core/devlink.c                            | 10 +++
 8 files changed, 180 insertions(+), 5 deletions(-)