v2:
- Collected R-bs
- Patch 3: convert to use StrOrNull rather than str for the tls_fields
  (it contains a lot of changes, I'll skip listing details, but please
   refer to the commit message)

Patch 1 fixes the tls-authz crashing when someone specifies "null"
parameter for tls-authz.

Patch 2 added a test case for all three tls-auth parameters specifying
"null" to make sure nothing will crash ever with 'null' passed into it.

Patch 3-4 are the proposed patches to deduplicate the three migration
parameter objects in qapi/migration.json.  Note that in this version (patch
3) we used 'str' to replace 'StrOrNull' for tls-* parameters to make then
deduplicate-able.

Please review, thanks.

Peter Xu (4):
  migration/qmp: Fix crash on setting tls-authz with null
  tests/migration-test: Add a test for null parameter setups
  migration/qapi: Replace @MigrateSetParameters with
    @MigrationParameters
  migration/qapi: Drop @MigrationParameter enum

 qapi/migration.json            | 370 +--------------------------------
 include/hw/qdev-properties.h   |   3 +
 migration/options.h            |  50 +++++
 hw/core/qdev-properties.c      |  40 ++++
 migration/migration-hmp-cmds.c |  23 +-
 migration/options.c            | 266 ++++++++++--------------
 migration/tls.c                |   3 +-
 tests/qtest/migration-test.c   |  21 ++
 8 files changed, 246 insertions(+), 530 deletions(-)

-- 
2.41.0