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NEWS: Highlight libopenvswitch API change caused by UB fixes.

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Acked-by: Dumitru Ceara <dceara@redhat.com>
Signed-off-by: Ilya Maximets <i.maximets@ovn.org>
This commit is contained in:
Ilya Maximets 2022-04-08 12:57:41 +02:00
parent 21b76c774d
commit 9d70f4a7c3
1 changed files with 11 additions and 0 deletions
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NEWS
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@ -1,5 +1,16 @@
Post-v2.17.0
---------------------
- libopenvswitch API change:
* To fix the Undefined Behavior issue causing the compiler to incorrectly
optimize important parts of code, container iteration macros (e.g.,
LIST_FOR_EACH) have been re-implemented in a UB-safe way.
* Backwards compatibility has mostly been preserved, however the
user-provided pointer is now set to NULL after the loop (unless it
exited via "break;")
* Users of libopenvswitch will need to double-check the use of such loop
macros before compiling with a new version.
* Since the change is limited to the definitions within the headers, the
ABI is not affected.
- OVSDB:
* 'relay' service model now supports transaction history, i.e. honors the
'last-txn-id' field in 'monitor_cond_since' requests from clients.