-Post-v2.3.0
+Post-v2.5.0
---------------------
+ - ovsdb-server:
+ * New "monitor2" and "update2" extensions to RFC 7047.
+
+v2.5.0 - xx xxx xxxx
+---------------------
+ - Dropped support for Python older than version 2.7. As a consequence,
+ using Open vSwitch 2.5 or later on XenServer 6.5 or earlier (which
+ have Python 2.4) requires first installing Python 2.7.
+ - OpenFlow:
+ * Group chaining (where one OpenFlow group triggers another) is
+ now supported.
+ * OpenFlow 1.4+ "importance" is now considered for flow eviction.
+ * OpenFlow 1.4+ OFPTC_EVICTION is now implemented.
+ * OpenFlow 1.4+ OFPTC_VACANCY_EVENTS is now implemented.
+ * OpenFlow 1.4+ OFPMP_TABLE_DESC is now implemented.
+ * Allow modifying the ICMPv4/ICMPv6 type and code fields.
+ * OpenFlow 1.4+ OFPT_SET_ASYNC_CONFIG and OFPT_GET_ASYNC_CONFIG are
+ now implemented.
+ - ovs-ofctl:
+ * New "out_group" keyword for OpenFlow 1.1+ matching on output group.
+ - Tunnels:
+ * Geneve tunnels can now match and set options and the OAM bit.
+ * The nonstandard GRE64 tunnel extension has been dropped.
+ - Support Multicast Listener Discovery (MLDv1 and MLDv2).
+ - Add 'symmetric_l3l4' and 'symmetric_l3l4+udp' hash functions.
+ - sFlow agent now reports tunnel and MPLS structures.
+ - New 'check-system-userspace', 'check-kmod' and 'check-kernel' Makefile
+ targets to run a new system testsuite. These tests can be run inside
+ a Vagrant box. See INSTALL.md for details
+ - Mark --syslog-target argument as deprecated. It will be removed in
+ the next OVS release.
+ - Added --user option to all daemons
+ - Add support for connection tracking through the new "ct" action
+ and "ct_state"/"ct_zone"/"ct_mark"/"ct_label" match fields. Only
+ available on Linux kernels with the connection tracking module loaded.
+ - Add experimental version of OVN. OVN, the Open Virtual Network, is a
+ system to support virtual network abstraction. OVN complements the
+ existing capabilities of OVS to add native support for virtual network
+ abstractions, such as virtual L2 and L3 overlays and security groups.
+ - RHEL packaging:
+ * DPDK ports may now be created via network scripts (see README.RHEL).
+
+
+v2.4.0 - 20 Aug 2015
+---------------------
+ - 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
+ MAC flooding attacks.
- New support for a "conjunctive match" OpenFlow extension, which
allows constructing OpenFlow matches of the form "field1 in
{a,b,c...} AND field2 in {d,e,f...}" and generalizations. For details,
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 (draft) extended registers are now supported.
- * The OpenFlow 1.5 (draft) actset_output field is now supported.
- * OpenFlow 1.5 (draft) Copy-Field action is now supported.
- * OpenFlow 1.5 (draft) masked Set-Field action is now supported.
+ * OpenFlow 1.5 extended registers are now supported.
+ * The OpenFlow 1.5 actset_output field is now supported.
+ * OpenFlow 1.5 Copy-Field action is now supported.
+ * OpenFlow 1.5 masked Set-Field action is now supported.
* OpenFlow 1.3+ table features requests are now supported (read-only).
* Nicira extension "move" actions may now be included in action sets.
* "resubmit" actions may now be included in action sets. The resubmit
is executed last, and only if the action set has no "output" or "group"
action.
* OpenFlow 1.4+ flow "importance" is now maintained in the flow table.
+ * 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.
- A simple wrapper script, 'ovs-docker', to integrate OVS with Docker
containers. If and when there is a native integration of Open vSwitch
with Docker, the wrapper script will be retired.
- - Added support for DPDK Tunneling. VXLAN and GRE are supported protocols.
- This is generic tunneling mechanism for userspace datapath.
- - Support for multicast snooping (IGMPv1 and IGMPv2)
- - Support for Linux kernels up to 3.19.x
+ - Added support for DPDK Tunneling. VXLAN, GRE, and Geneve are supported
+ protocols. This is generic tunneling mechanism for userspace datapath.
+ - Support for multicast snooping (IGMPv1, IGMPv2 and IGMPv3)
+ - Support for Linux kernels up to 4.0.x
- The documentation now use the term 'destination' to mean one of syslog,
console or file for vlog logging instead of the previously used term
'facility'.
+ - Support for VXLAN Group Policy extension
+ - Initial support for the IETF Auto-Attach SPBM draft standard. This
+ contains rudimentary support for the LLDP protocol as needed for
+ Auto-Attach.
+ - The default OpenFlow and OVSDB ports are now the IANA-assigned
+ numbers. OpenFlow is 6653 and OVSDB is 6640.
+ - Support for DPDK vHost.
+ - Support for outer UDP checksums in Geneve and VXLAN.
+ - The kernel vports with dependencies are no longer part of the overall
+ openvswitch.ko but built and loaded automatically as individual kernel
+ modules (vport-*.ko).
+ - Support for STT tunneling.
+ - ovs-sim: New developer tool for simulating multiple OVS instances.
+ See ovs-sim(1) for more information.
+ - Support to configure method (--syslog-method argument) that determines
+ how daemons will talk with syslog.
+ - Support for "ovs-appctl vlog/list-pattern" command that lets to query
+ logging message format for each destination.
v2.3.0 - 14 Aug 2014