-Post-v2.3.0
+Post-v2.5.0
+---------------------
+ - ovsdb-server:
+ * New "monitor_cond" "monitor_cond_update" and "update2" extensions to
+ RFC 7047.
+ - OpenFlow:
+ * OpenFlow 1.3+ bundles are now supported for group mods as well as
+ flow mods and port mods. Both 'atomic' and 'ordered' bundle
+ flags are supported for group mods as well as flow mods.
+ * OpenFlow 1.1+ OFPT_QUEUE_GET_CONFIG_REQUEST now supports OFPP_ANY.
+ * OpenFlow 1.4+ OFPMP_QUEUE_DESC is now supported.
+ * OpenFlow 1.4+ OFPT_TABLE_STATUS is now supported.
+ * New property-based packet-in message format NXT_PACKET_IN2 with support
+ for arbitrary user-provided data and for serializing flow table
+ traversal into a continuation for later resumption.
+ * New extension message NXT_SET_ASYNC_CONFIG2 to allow OpenFlow 1.4-like
+ control over asynchronous messages in earlier versions of OpenFlow.
+ * OpenFlow 1.3 Extension 230, adding OpenFlow Bundles support, is
+ now implemented. Only flow mod and port mod messages are supported
+ in bundles.
+ * New OpenFlow extension NXM_NX_MPLS_TTL to provide access to MPLS TTL.
+ * New output option, output(port=N,max_len=M), to allow truncating a
+ packet to size M bytes when outputting to port N.
+ * New command OFPGC_ADD_OR_MOD for OFPT_GROUP_MOD message that adds a
+ new group or modifies an existing groups
+ - Improved OpenFlow version compatibility for actions:
+ * New OpenFlow extension to support the "group" action in OpenFlow 1.0.
+ * OpenFlow 1.0 "enqueue" action now properly translated to OpenFlow 1.1+.
+ * OpenFlow 1.1 "mod_nw_ecn" and OpenFlow 1.1+ "mod_nw_ttl" actions now
+ properly translated to OpenFlow 1.0.
+ - ovs-ofctl:
+ * queue-get-config command now allows a queue ID to be specified.
+ * '--bundle' option can now be used with OpenFlow 1.3 and with group mods.
+ * New "bundle" command allows executing a mixture of flow and group mods
+ as a single atomic transaction.
+ * New option "--color" to produce colorized output for some commands.
+ * New option '--may-create' to use OFPGC_ADD_OR_MOD in mod-group command.
+ - IPFIX:
+ * New "sampling_port" option for "sample" action to allow sampling
+ ingress and egress tunnel metadata with IPFIX.
+ * New ovs-ofctl commands "dump-ipfix-bridge" and "dump-ipfix-flow" to
+ dump bridge IPFIX statistics and flow based IPFIX statistics.
+ * New setting other-config:virtual_obs_id to add an arbitrary string
+ to IPFIX records.
+ - Linux:
+ * New QoS type "linux-noop" that prevents Open vSwitch from trying to
+ manage QoS for a given port (useful when other software manages QoS).
+ - DPDK:
+ * New option "n_rxq" for PMD interfaces.
+ Old 'other_config:n-dpdk-rxqs' is no longer supported.
+ Not supported by vHost interfaces. For them number of rx and tx queues
+ is applied from connected virtio device.
+ * New 'other_config:pmd-rxq-affinity' field for PMD interfaces, that
+ allows to pin port's rx queues to desired cores.
+ * New appctl command 'dpif-netdev/pmd-rxq-show' to check the port/rxq
+ assignment.
+ * Type of log messages from PMD threads changed from INFO to DBG.
+ * QoS functionality with sample egress-policer implementation.
+ * The mechanism for configuring DPDK has changed to use database
+ * Sensible defaults have been introduced for many of the required
+ configuration options
+ * DB entries have been added for many of the DPDK EAL command line
+ arguments. Additional arguments can be passed via the dpdk-extra
+ entry.
+ * Add ingress policing functionality.
+ * PMD threads servicing vHost User ports can now come from the NUMA
+ node that device memory is located on if CONFIG_RTE_LIBRTE_VHOST_NUMA
+ is enabled in DPDK.
+ * Basic connection tracking for the userspace datapath (no ALG,
+ fragmentation or NAT support yet)
+ * Support for DPDK 16.07
+ * Optional support for DPDK pdump enabled.
+ * Jumbo frame support
+ * Remove dpdkvhostcuse port type.
+ - Increase number of registers to 16.
+ - ovs-benchmark: This utility has been removed due to lack of use and
+ bitrot.
+ - ovs-appctl:
+ * New "vlog/close" command.
+ - ovs-ctl:
+ * Added the ability to selectively start the forwarding and database
+ functions (ovs-vswitchd and ovsdb-server, respectively).
+ - ovsdb-server:
+ * Remove max number of sessions limit, to enable connection scaling
+ testing.
+ - python:
+ * Added support for Python 3.4+ in addition to existing support
+ for 2.7+.
+ - SELinux:
+ * Introduced SELinux policy package.
+ - Datapath Linux kernel compatibility.
+ * Dropped support for kernel older than 3.10.
+ * Removed VLAN splinters feature.
+ * Support for truncate action.
+ * Datapath supports kernel upto 4.6.
+ - Tunnels:
+ * Flow based tunnel match and action can be used for IPv6 address using
+ tun_ipv6_src, tun_ipv6_dst fields.
+ * Added support for IPv6 tunnels, for details checkout FAQ.
+ - A wrapper script, 'ovs-tcpdump', to easily port-mirror an OVS port and
+ watch with tcpdump
+ - Introduce --no-self-confinement flag that allows daemons to work with
+ sockets outside their run directory.
+ - ovs-pki: Changed message digest algorithm from SHA-1 to SHA-512 because
+ SHA-1 is no longer secure and some operating systems have started to
+ disable it in OpenSSL.
+ - Add 'mtu_request' column to the Interface table. It can be used to
+ configure the MTU of non-internal ports.
+
+
+v2.5.0 - 26 Feb 2016
+---------------------
+ - 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).
+ - DPDK:
+ * Requires DPDK 2.2
+ * Added multiqueue support to vhost-user
+ * Note: QEMU 2.5+ required for multiqueue support
+
+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
with Docker, the wrapper script will be retired.
- 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 and IGMPv2)
+ - 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
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