I have reviewed the flower control flags code.
In all, but one (sfc), the flags field wasn't
checked properly for unsupported flags.

In this series I have only included a single example
user for each helper function. Once the helpers are in,
I will submit patches for all other drivers implementing
flower.

After which there will be:
- 6 drivers using flow_rule_is_supp_control_flags()
- 8 drivers using flow_rule_has_control_flags()
- 11 drivers using flow_rule_match_has_control_flags()

---
Changelog:

v3:
- Added Reviewed-by from Louis Peens (first two patches)
- Properly fixed kernel-doc format

v2: https://lore.kernel.org/netdev/20240410093235.5334-1-ast@fiberby.net/
- Squashed the 3 helper functions to one commmit (requested by Baowen Zheng)
- Renamed helper functions to avoid double negatives (suggested by Louis Peens)
- Reverse booleans in some functions and callsites to align with new names
- Fix autodoc format

v1: https://lore.kernel.org/netdev/20240408130927.78594-1-ast@fiberby.net/

Asbjørn Sloth Tønnesen (4):
  flow_offload: add control flag checking helpers
  nfp: flower: fix check for unsupported control flags
  net: prestera: flower: validate control flags
  net: dsa: microchip: ksz9477: flower: validate control flags

 drivers/net/dsa/microchip/ksz9477_tc_flower.c |  3 +
 .../marvell/prestera/prestera_flower.c        |  4 ++
 .../ethernet/netronome/nfp/flower/offload.c   |  6 +-
 include/net/flow_offload.h                    | 55 +++++++++++++++++++
 4 files changed, 65 insertions(+), 3 deletions(-)

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2.43.0