Add JSON output for 'ethtool -m' / --module-info, following the
guideline below:

1. Fields with description, will have a separate description field.
2. Units will be documented in a separate module-info.json file.
3. ASCII fields will be presented as strings.
4. On/Off is rendered as true/false.
5. Yes/no is rendered as true/false.
6. Per-channel fields will be presented as array, when each element
   represents a channel.
7. Fields that hold version, will be split to major and minor sub
   fields.

This patchset suppose to extend [1] to cover all types of modules.

Patchset overview:
Patches #1-#7: Preparations.
Patches #8-#9: Add JSON output support for CMIS compliant modules.
Patches #10-#11: Add JSON output support for SFF8636 modules.
Patches #12-#14: Add JSON output support for SFF8079 and SFF8472 modules.
Patch #15: Add a new schema JSON file for units documentation.
Patches #16: Add '-j' support to ethtool

[1] https://lore.kernel.org/all/20220704054114.22582-2-matt@traverse.com.au/ (local)

v3:
	* Remove unit fields from JSON output.
	* Reword commit messages.
	* Add patch #2 and #15.
	* Enable properly JSON output support for SFF8079.
	* Remove printings from fields that might be empty strings.
	* Fix JSON output in sff8636_show_dom_mod_lvl_flags().

v2:
	* In rx_power JSON field, add a type field to let the user know
	  what type is printed in "value".
	* Use uint instead of hexa fields in JSON context.
	* Simplify sff8636_show_dom().
	* Use "false" in module_show_lane_status() instead of "None" in
	  JSON context.

Danielle Ratson (16):
  module_common: Add a new file to all the common code for all module
    types
  ethtool: Standardize Link Length field names across module types
  sff_common: Move sff_show_revision_compliance() to qsfp.c
  cmis: Change loop order in cmis_show_dom_chan_lvl_flags()
  qsfp: Reorder the channel-level flags list for SFF8636 module type
  qsfp: Refactor sff8636_show_dom() by moving code into separate
    functions
  module_common: Add helpers to support JSON printing for common value
    types
  cmis: Add JSON output handling to --module-info in CMIS modules
  cmis: Enable JSON output support in CMIS modules
  qsfp: Add JSON output handling to --module-info in SFF8636 modules
  qsfp: Enable JSON output support for SFF8636 modules
  sfpid: Add JSON output handling to --module-info in SFF8079 modules
  sfpdiag: Add JSON output handling to --module-info in SFF8472 modules
  ethtool: Enable JSON output support for SFF8079 and SFF8472 modules
  module_info: Add a new JSON file for units documentation
  ethtool: Add '-j' support to ethtool

 Makefile.am             |   7 +-
 cmis.c                  | 493 +++++++++++-----------
 cmis.h                  |  62 ---
 ethtool.c               |  10 +-
 module-common.c         | 662 +++++++++++++++++++++++++++++
 module-common.h         | 287 +++++++++++++
 module_info.json        | 191 +++++++++
 netlink/module-eeprom.c |  26 +-
 qsfp.c                  | 892 +++++++++++++++++++++-------------------
 qsfp.h                  | 108 -----
 sff-common.c            | 348 ++++------------
 sff-common.h            | 119 ++----
 sfpdiag.c               |  52 ++-
 sfpid.c                 | 446 +++++++++++---------
 14 files changed, 2248 insertions(+), 1455 deletions(-)
 create mode 100644 module-common.c
 create mode 100644 module-common.h
 create mode 100644 module_info.json

-- 
2.47.0