netdev - [net-next v3 0/4] devlink: implement dry run support for flash update

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Date:   Mon, 25 Jul 2022 13:56:25 -0700
From:   Jacob Keller <jacob.e.keller@...el.com>
To:     netdev@...r.kernel.org
Cc:     Jacob Keller <jacob.e.keller@...el.com>,
        Jonathan Corbet <corbet@....net>, Jiri Pirko <jiri@...dia.com>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Tony Nguyen <anthony.l.nguyen@...el.com>,
        David Ahern <dsahern@...nel.org>,
        Stephen Hemminger <stephen@...workplumber.org>,
        linux-doc@...r.kernel.org
Subject: [net-next v3 0/4] devlink: implement dry run support for flash update

This adds a DEVLINK_ATTR_DRY_RUN which is used to indicate a request to
validate a potentially destructive operation without performing the actions
yet. In theory it could be used for other devlink operations in the future.

For flash update, it allows the user to validate a flash image, including
ensuring the driver for the device is willing to program it, without
actually committing an update yet.

There is an accompanying series for iproute2 which allows adding the dry-run
attribute. It does as Jakub suggested and checks the maximum attribute
before allowing the dry run in order to avoid accidentally performing a real
update on older kernels.

Changes since v1:
* Added maintainers to Cc (thanks for pointing out the script, Jiri!)
* Replaced bool in struct with u8 : 1
* Added kernel doc to devlink_flash_update_params
* Renamed PLDMFW parameter from dry_run to validate
* Reduced indentation in devlink.c by using nla_get_flag

Changes since v2:
* Split the fix for overwrite_mask doc to its own patch
* Split pldmfw changes to their own patch
* Fix lib/pldmfw.c code mentioning dry_run
* Name the pldmfw context parameter "only_validate" for clarity
* Dropped the comment about dry run

Cc: Jacob Keller <jacob.e.keller@...el.com>
Cc: Jonathan Corbet <corbet@....net>
Cc: Jiri Pirko <jiri@...dia.com>
Cc: "David S. Miller" <davem@...emloft.net>
Cc: Eric Dumazet <edumazet@...gle.com>
Cc: Jakub Kicinski <kuba@...nel.org>
Cc: Paolo Abeni <pabeni@...hat.com>
Cc: Tony Nguyen <anthony.l.nguyen@...el.com>
Cc: David Ahern <dsahern@...nel.org>
Cc: Stephen Hemminger <stephen@...workplumber.org>
Cc: linux-doc@...r.kernel.org
Cc: netdev@...r.kernel.org

Jacob Keller (4):
  devlink: add missing kdoc for overwrite mask
  devlink: add dry run attribute to flash update
  pldmfw: offer option to only validate in image but not update
  ice: support dry run of a flash update to validate firmware file

 Documentation/driver-api/pldmfw/index.rst     | 10 ++++++++
 .../networking/devlink/devlink-flash.rst      | 23 +++++++++++++++++++
 drivers/net/ethernet/intel/ice/ice_devlink.c  |  3 ++-
 .../net/ethernet/intel/ice/ice_fw_update.c    | 14 +++++++----
 include/linux/pldmfw.h                        |  5 ++++
 include/net/devlink.h                         |  4 ++++
 include/uapi/linux/devlink.h                  |  8 +++++++
 lib/pldmfw/pldmfw.c                           | 12 ++++++++++
 net/core/devlink.c                            | 17 +++++++++++++-
 9 files changed, 90 insertions(+), 6 deletions(-)

base-commit: 5588d628027092e66195097bdf6835ddf64418b3
-- 
2.35.1.456.ga9c7032d4631