Post-v2.3.0
---------------------
- - Added support for SFQ, FQ_CoDel and CoDel qdiscs.
+ - Flow table modifications are now atomic, meaning that each packet
+ now sees a coherent version of the OpenFlow pipeline. For
+ example, if a controller removes all flows with a single OpenFlow
+ "flow_mod", no packet sees an intermediate version of the OpenFlow
+ pipeline where only some of the flows have been deleted.
+ - Added support for SFQ, FQ_CoDel and CoDel qdiscs.
- Add bash command-line completion support for ovs-vsctl Please check
utilities/ovs-command-compgen.INSTALL.md for how to use.
- The MAC learning feature now includes per-port fairness to mitigate
commands are now redundant and will be removed in a future
release. See ovs-vswitchd(8) for details.
- OpenFlow:
+ * OpenFlow 1.4 bundles are now supported for flow mods and port
+ mods. For flow mods, both 'atomic' and 'ordered' bundle flags
+ are trivially supported, as all bundled messages are executed
+ in the order they were added and all flow table modifications
+ are now atomic to the datapath. Port mods may not appear in
+ atomic bundles, as port status modifications are not atomic.
* IPv6 flow label and neighbor discovery fields are now modifiable.
* OpenFlow 1.5 extended registers are now supported.
* The OpenFlow 1.5 actset_output field is now supported.
* A new Netronome extension to OpenFlow 1.5+ allows control over the
fields hashed for OpenFlow select groups. See "selection_method" and
related options in ovs-ofctl(8) for details.
+ - ovs-ofctl has a new '--bundle' option that makes the flow mod commands
+ ('add-flow', 'add-flows', 'mod-flows', 'del-flows', and 'replace-flows')
+ use an OpenFlow 1.4 bundle to operate the modifications as a single
+ atomic transaction. If any of the flow mods in a transaction fail, none
+ of them are executed. All flow mods in a bundle appear to datapath
+ lookups simultaneously.
+ - ovs-ofctl 'add-flow' and 'add-flows' commands now accept arbitrary flow
+ mods as an input by allowing the flow specification to start with an
+ explicit 'add', 'modify', 'modify_strict', 'delete', or 'delete_strict'
+ keyword. A missing keyword is treated as 'add', so this is fully
+ backwards compatible. With the new '--bundle' option all the flow mods
+ are executed as a single atomic transaction using an OpenFlow 1.4 bundle.
- ovs-pki: Changed message digest algorithm from MD5 to SHA-1 because
MD5 is no longer secure and some operating systems have started to disable
it in OpenSSL.