-post-v1.9.0
---------------------
+Post-v2.1.0
+---------------------
+ - Internal ports are no longer brought up by default, because it
+ should be an administrator task to bring up devices as they are
+ configured properly.
+ - ovs-vsctl now reports when ovs-vswitchd fails to create a new port or
+ bridge.
+ - The "ovsdbmonitor" graphical tool has been removed, because it was
+ poorly maintained and not widely used.
+ - New "check-ryu" Makefile target for running Ryu tests for OpenFlow
+ controllers against Open vSwitch. See INSTALL for details.
+ - Added IPFIX support for SCTP flows and templates for ICMPv4/v6 flows.
+ - Upon the receipt of a SIGHUP signal, ovs-vswitchd no longer reopens its
+ log file (it will terminate instead). Please use 'ovs-appctl vlog/reopen'
+ instead.
+ - Support for Linux kernels up to 3.13. From Kernel 3.12 onwards OVS uses
+ tunnel API for GRE and VXLAN.
+ - Added DPDK support.
+
+
+v2.1.0 - xx xxx xxxx
+---------------------
+ - Address prefix tracking support for flow tables. New columns
+ "prefixes" in OVS-DB table "Flow_Table" controls which packet
+ header fields are used for address prefix tracking. Prefix
+ tracking allows the classifier to skip rules with longer than
+ necessary prefixes, resulting in better wildcarding for datapath
+ flows. Default configuration is to not use any fields for prefix
+ tracking. However, if any flow tables contain both exact matches
+ and masked matches for IP address fields, OVS performance may be
+ increased by using this feature.
+ * As of now, the fields for which prefix lookup can be enabled
+ are: 'tun_id', 'tun_src', 'tun_dst', 'nw_src', 'nw_dst' (or
+ aliases 'ip_src' and 'ip_dst'), 'ipv6_src', and 'ipv6_dst'.
+ (Using this feature for 'tun_id' would only make sense if the
+ tunnel IDs have prefix structure similar to IP addresses.)
+ * There is a maximum number of fields that can be enabled for any
+ one flow table. Currently this limit is 3.
+ * Examples:
+ $ ovs-vsctl set Bridge br0 flow_tables:0=@N1 -- \
+ --id=@N1 create Flow_Table name=table0
+ $ ovs-vsctl set Bridge br0 flow_tables:1=@N1 -- \
+ --id=@N1 create Flow_Table name=table1
+ $ ovs-vsctl set Flow_Table table0 prefixes=ip_dst,ip_src
+ $ ovs-vsctl set Flow_Table table1 prefixes=[]
+ - TCP flags matching: OVS now supports matching of TCP flags. This
+ has an adverse performance impact when using OVS userspace 1.10
+ or older (no megaflows support) together with the new OVS kernel
+ module. It is recommended that the kernel and userspace modules
+ both are upgraded at the same time.
+ - The default OpenFlow and OVSDB ports will change to
+ IANA-assigned numbers in a future release. Consider updating
+ your installations to specify port numbers instead of using the
+ defaults.
+ - OpenFlow:
+ * The OpenFlow 1.1+ "Write-Actions" instruction is now supported.
+ * OVS limits the OpenFlow port numbers it assigns to port 32767 and
+ below, leaving port numbers above that range free for assignment
+ by the controller.
+ * ovs-vswitchd now honors changes to the "ofport_request" column
+ in the Interface table by changing the port's OpenFlow port
+ number.
+ - ovs-vswitchd.conf.db.5 man page will contain graphviz/dot
+ diagram only if graphviz package was installed at the build time.
+ - Support for Linux kernels up to 3.11
+ - ovs-dpctl:
+ The "show" command also displays mega flow mask stats.
+ - ovs-ofctl:
+ * New command "ofp-parse-pcap" to dump OpenFlow from PCAP files.
+ - ovs-controller has been renamed test-controller. It is no longer
+ packaged or installed by default, because too many users assumed
+ incorrectly that ovs-controller was a necessary or desirable part
+ of an Open vSwitch deployment.
+ - Added vlog option to export to a UDP syslog sink.
+ - ovsdb-client:
+ * The "monitor" command can now monitor all tables in a database,
+ instead of being limited to a single table.
+ - The flow-eviction-threshold has been replaced by the flow-limit which is a
+ hard limit on the number of flows in the datapath. It defaults to 200,000
+ flows. OVS automatically adjusts this number depending on network
+ conditions.
+ - Added IPv6 support for active and passive socket communications.
+
+
+v2.0.0 - 15 Oct 2013
+---------------------
+ - The ovs-vswitchd process is no longer single-threaded. Multiple
+ threads are now used to handle flow set up and asynchronous
+ logging.
+ - OpenFlow:
+ * Experimental support for OpenFlow 1.1 (in addition to 1.2 and
+ 1.3, which had experimental support in 1.10).
+ * Experimental protocol support for OpenFlow 1.1+ groups. This
+ does not yet include an implementation in the Open vSwitch
+ software switch.
+ * Experimental protocol support for OpenFlow 1.2+ meters. This
+ does not yet include an implementation in the Open vSwitch
+ software switch.
+ * New support for matching outer source and destination IP address
+ of tunneled packets, for tunnel ports configured with the newly
+ added "remote_ip=flow" and "local_ip=flow" options.
+ * Support for matching on metadata 'pkt_mark' for interacting with
+ other system components. On Linux this corresponds to the skb
+ mark.
+ * Support matching, rewriting SCTP ports
+ - The Interface table in the database has a new "ifindex" column to
+ report the interface's OS-assigned ifindex.
+ - New "check-oftest" Makefile target for running OFTest against Open
+ vSwitch. See README-OFTest for details.
+ - The flow eviction threshold has been moved to the Open_vSwitch table.
+ - Database names are now mandatory when specifying ovsdb-server options
+ through database paths (e.g. Private key option with the database name
+ should look like "--private-key=db:Open_vSwitch,SSL,private_key").
+ - Added ovs-dev.py, a utility script helpful for Open vSwitch developers.
+ - Support for Linux kernels up to 3.10
+ - ovs-ofctl:
+ * New "ofp-parse" for printing OpenFlow messages read from a file.
+ * New commands for OpenFlow 1.1+ groups.
+ - Added configurable flow caching support to IPFIX exporter.
+ - Dropped support for Linux pre-2.6.32.
+ - Log file timestamps and ovsdb commit timestamps are now reported
+ with millisecond resolution. (Previous versions only reported
+ whole seconds.)
+
+
+v1.11.0 - 28 Aug 2013
+---------------------
+ - Support for megaflows, which allows wildcarding in the kernel (and
+ any dpif implementation that supports wildcards). Depending on
+ the flow table and switch configuration, flow set up rates are
+ close to the Linux bridge.
+ - The "tutorial" directory contains a new tutorial for some advanced
+ Open vSwitch features.
+ - Stable bond mode has been removed.
+ - The autopath action has been removed.
+ - New support for the data encapsulation format of the LISP tunnel
+ protocol (RFC 6830). An external control plane or manual flow
+ setup is required for EID-to-RLOC mapping.
+ - OpenFlow:
+ * The "dec_mpls_ttl" and "set_mpls_ttl" actions from OpenFlow
+ 1.1 and later are now implemented.
+ * New "stack" extension for use in actions, to push and pop from
+ NXM fields.
+ * The "load" and "set_field" actions can now modify the "in_port". (This
+ allows one to enable output to a flow's input port by setting the
+ in_port to some unused value, such as OFPP_NONE.)
+ - ovs-dpctl:
+ * New debugging commands "add-flow", "mod-flow", "del-flow".
+ * "dump-flows" now has a -m option to increase output verbosity.
+ - In dpif-based bridges, cache action translations, which can improve
+ flow set up performance by 80% with a complicated flow table.
+ - New syslog format, prefixed with "ovs|", to be easier to filter.
+ - RHEL: Removes the default firewall rule that allowed GRE traffic to
+ pass through. Any users that relied on this automatic firewall hole
+ will have to manually configure it. The ovs-ctl(8) manpage documents
+ the "enable-protocol" command that can be used as an alternative.
+ - New CFM demand mode which uses data traffic to indicate interface
+ liveness.
+
+v1.10.0 - 01 May 2013
+---------------------
+ - Bridge compatibility support has been removed. Any uses that
+ rely on ovs-brcompatd will have to stick with Open vSwitch 1.9.x
+ or adapt to native Open vSwitch support (e.g. use ovs-vsctl instead
+ of brctl).
- The maximum size of the MAC learning table is now configurable.
- - New support for the VXLAN tunnel protocol (see the IETF draft here:
- http://tools.ietf.org/html/draft-mahalingam-dutt-dcops-vxlan-02).
- - New "vlog/disable-rate-limit" and "vlog/enable-rate-limit" commands
- available through ovs-appctl allow control over logging rate limits.
+ - With the Linux datapath, packets for new flows are now queued
+ separately on a per-port basis, so it should no longer be
+ possible for a large number of new flows arriving on one port to
+ prevent new flows from being processed on other ports.
+ - ovs-vsctl:
+ * Previously ovs-vsctl would retry connecting to the database forever,
+ causing it to hang if ovsdb-server was not running. Now, ovs-vsctl
+ only tries once by default (use --retry to try forever). This change
+ means that you may want to remove uses of --timeout to avoid hangs
+ in ovs-vsctl calls.
+ * Many "ovs-vsctl" database commands now accept an --if-exists option.
+ Please refer to the ovs-vsctl manpage for details.
+ - OpenFlow:
+ - Experimental support for newer versions of OpenFlow. See
+ the "What versions of OpenFlow does Open vSwitch support?"
+ question in the FAQ for more details.
+ - The OpenFlow "dp_desc" may now be configured by setting the
+ value of other-config:dp-desc in the Bridge table.
+ - It is possible to request the OpenFlow port number with the
+ "ofport_request" column in the Interface table.
+ - The NXM flow_removed message now reports the OpenFlow table ID
+ from which the flow was removed.
+ - Tunneling:
+ - New support for the VXLAN tunnel protocol (see the IETF draft here:
+ http://tools.ietf.org/html/draft-mahalingam-dutt-dcops-vxlan-03).
+ - Tunneling requires the version of the kernel module paired with
+ Open vSwitch 1.9.0 or later.
+ - Inheritance of the Don't Fragment bit in IP tunnels (df_inherit)
+ is no longer supported.
+ - Path MTU discovery is no longer supported.
+ - CAPWAP tunneling support removed.
+ - Tunnels with multicast destination ports are no longer supported.
+ - ovs-dpctl:
+ - The "dump-flows" and "del-flows" no longer require an argument
+ if only one datapath exists.
+ - ovs-appctl:
+ - New "vlog/disable-rate-limit" and "vlog/enable-rate-limit"
+ commands available allow control over logging rate limits.
+ - New "dpif/dump-dps", "dpif/show", and "dpif/dump-flows" command
+ that mimic the equivalent ovs-dpctl commands.
+ - The ofproto library is now responsible for assigning OpenFlow port
+ numbers. An ofproto implementation should assign them when
+ port_construct() is called.
+ - All dpif-based bridges of a particular type share a common
+ datapath called "ovs-<type>", e.g. "ovs-system". The ovs-dpctl
+ commands will now return information on that shared datapath. To
+ get the equivalent bridge-specific information, use the new
+ "ovs-appctl dpif/*" commands.
+ - Backward-incompatible changes:
+ - Earlier Open vSwitch versions treated ANY as a wildcard in flow
+ syntax. OpenFlow 1.1 adds a port named ANY, which introduces a
+ conflict. ANY was rarely used in flow syntax, so we chose to
+ retire that meaning of ANY in favor of the OpenFlow 1.1 meaning.
+ - Patch ports no longer require kernel support, so they now work
+ with FreeBSD and the kernel module built into Linux 3.3 and later.
+ - New "sample" action.
-v1.9.0 - xx xxx xxxx
---------------------
- - The tunneling code no longer assumes input and output keys are symmetric.
- If they are not, PMTUD needs to be disabled for tunneling to work. Note
- this only applies to flow-based keys.
+v1.9.0 - 26 Feb 2013
+------------------------
- Datapath:
- Support for ipv6 set action.
- SKB mark matching and setting.
- - support for Linux kernels up to 3.7
+ - support for Linux kernels up to 3.8
- FreeBSD is now a supported platform, thanks to code contributions from
Gaetano Catalli, Ed Maste, and Giuseppe Lettieri.
- ovs-bugtool: New --ovs option to report only OVS related information.
- Allow bitwise masking for SHA and THA fields in ARP, SLL and TLL
fields in IPv6 neighbor discovery messages, and IPv6 flow label.
- Adds support for writing to the metadata field for a flow.
- - It is possible to request the OpenFlow port number with the
- "ofport_request" column in the Interface table.
+ - Tunneling:
+ - The tunneling code no longer assumes input and output keys are
+ symmetric. If they are not, PMTUD needs to be disabled for
+ tunneling to work. Note this only applies to flow-based keys.
+ - New support for a nonstandard form of GRE that supports a 64-bit key.
+ - Tunnel Path MTU Discovery default value was set to 'disabled'.
+ This feature is deprecated and will be removed soon.
+ - Tunnel header caching removed.
- ovs-ofctl:
- Commands and actions that accept port numbers now also accept keywords
that represent those ports (such as LOCAL, NONE, and ALL). This is
- ovs-dpctl:
- Support requesting the port number with the "port_no" option in
the "add-if" command.
- - The "dump-flows" and "del-flows" no longer require an argument
- if only one datapath exists.
- - ovs-appctl:
- - New "dpif/dump-dps", "dpif/show", and "dpif/dump-flows" command
- that mimic the equivalent ovs-dpctl commands.
- ovs-pki: The "online PKI" features have been removed, along with
the ovs-pki-cgi program that facilitated it, because of some
alarmist insecurity claims. We do not believe that these claims
are true, but because we do not know of any users for this
feature it seems better on balance to remove it. (The ovs-pki-cgi
program was not included in distribution packaging.)
- - Tunnel Path MTU Discovery default value was set to 'disabled'. This
- feature is deprecated and will be removed soon.
- ovsdb-server now enforces the immutability of immutable columns. This
was not enforced in earlier versions due to an oversight.
- - New support for a nonstandard form of GRE that supports a 64-bit key.
- - The ofproto library is now responsible for assigning OpenFlow port
- numbers. An ofproto implementation should assign them when
- port_construct() is called.
- - All dpif-based bridges of a particular type share a common
- datapath called "ovs-<type>", e.g. "ovs-system". The ovs-dpctl
- commands will now return information on that shared datapath. To
- get the equivalent bridge-specific information, use the new
- "ovs-appctl dpif/*" commands.
- - Tunnel header caching removed.
- The following features are now deprecated. They will be removed no
earlier than February 2013. Please email dev@openvswitch.org with
concerns.
+ - Bridge compatibility.
- Stable bond mode.
- The autopath action.
- Interface type "null".
data in ARP packets.
-v1.8.0 - xx xxx xxxx
+v1.8.0 - 26 Feb 2013
------------------------
+ *** Internal only release ***
- New FAQ. Please send updates and additions!
- Authors of controllers, please read the new section titled "Action
Reproduction" in DESIGN, which describes an Open vSwitch change in
git://git.onelab.eu / sliver-openvswitch.git / blobdiff