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_no_unsupp_control_flags
- 8 drivers using flow_rule_no_control_flags
- 11 drivers using flow_rule_match_no_control_flags

Asbjørn Sloth Tønnesen (6):
  flow_offload: add flow_rule_no_unsupp_control_flags()
  nfp: flower: fix check for unsupported control flags
  flow_offload: add flow_rule_no_control_flags()
  net: prestera: flower: validate control flags
  flow_offload: add flow_rule_match_no_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