[PATCH 0/3] ublk: validate zoned SET_PARAMS earlier

Hi,

UBLK_F_ZONED uses params.basic.chunk_sectors as zone size. ublk also
uses it to calculate number of zones with ilog2().

Before this series, SET_PARAMS can accept non-power-of-2 zone size.
Then the device fails later when it is started. Reject it in SET_PARAMS
and add one selftest for this kind of parameter checks.

Patch 1 adds the missing check.

Patch 2 adds a kublk helper which sends SET_PARAMS without START_DEV.

Patch 3 adds test_params_01.sh. It covers basic parameter checks and
zoned parameter checks, including the non-power-of-2 zone size case.

Without patch 1, the non-power-of-2 zoned case is accepted by
SET_PARAMS. With patch 1, it fails in SET_PARAMS.

Yao Sang (3):
  ublk: reject non-power-of-2 zone sizes in SET_PARAMS
  selftests: ublk: add helper for SET_PARAMS
  selftests: ublk: add SET_PARAMS validation test

 drivers/block/ublk_drv.c                      |   2 +-
 tools/testing/selftests/ublk/Makefile         |   2 +
 tools/testing/selftests/ublk/kublk.c          | 161 +++++++++++++++++-
 tools/testing/selftests/ublk/kublk.h          |  18 ++
 .../testing/selftests/ublk/test_params_01.sh  | 114 +++++++++++++
 5 files changed, 295 insertions(+), 2 deletions(-)
 create mode 100755 tools/testing/selftests/ublk/test_params_01.sh

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2.25.1