NEWS

   1 post-v1.10.0
   2 ---------------------
   3     - Stable bond mode has been removed.
   4     - The autopath action has been removed.
   5     - CAPWAP tunneling support removed.
   6     - New support for the data encapsulation format of the LISP tunnel
   7       protocol (RFC 6830).  An external control plane or manual flow
   8       setup is required for EID-to-RLOC mapping.
   9     - OpenFlow:
  10       * The "dec_mpls_ttl" and "set_mpls_ttl" actions from OpenFlow
  11         1.1 and later are now implemented.
  12       * New "stack" extension for use in actions, to push and pop from
  13         NXM fields.
  14
  15
  16 v1.10.0 - xx xxx xxxx
  17 ---------------------
  18     - Bridge compatibility support has been removed.  Any uses that
  19       rely on ovs-brcompatd will have to stick with Open vSwitch 1.9.x
  20       or adapt to native Open vSwitch support (e.g. use ovs-vsctl instead
  21       of brctl).
  22     - The maximum size of the MAC learning table is now configurable.
  23     - With the Linux datapath, packets for new flows are now queued
  24       separately on a per-port basis, so it should no longer be
  25       possible for a large number of new flows arriving on one port to
  26       prevent new flows from being processed on other ports.
  27     - Many "ovs-vsctl" database commands now accept an --if-exists option.
  28       Please refer to the ovs-vsctl manpage for details.
  29     - OpenFlow:
  30       - Experimental support for newer versions of OpenFlow.  See
  31         the "What versions of OpenFlow does Open vSwitch support?"
  32         question in the FAQ for more details.
  33       - The OpenFlow "dp_desc" may now be configured by setting the
  34         value of other-config:dp-desc in the Bridge table.
  35       - It is possible to request the OpenFlow port number with the
  36         "ofport_request" column in the Interface table.
  37     - Tunneling:
  38       - New support for the VXLAN tunnel protocol (see the IETF draft here:
  39         http://tools.ietf.org/html/draft-mahalingam-dutt-dcops-vxlan-03).
  40       - Tunneling requires the version of the kernel module paired with
  41         Open vSwitch 1.9.0 or later.
  42       - Inheritance of the Don't Fragment bit in IP tunnels (df_inherit)
  43         is no longer supported.
  44       - Path MTU discovery is no longer supported.
  45     - ovs-dpctl:
  46       - The "dump-flows" and "del-flows" no longer require an argument
  47         if only one datapath exists.
  48     - ovs-appctl:
  49       - New "vlog/disable-rate-limit" and "vlog/enable-rate-limit"
  50         commands available allow control over logging rate limits.
  51       - New "dpif/dump-dps", "dpif/show", and "dpif/dump-flows" command
  52         that mimic the equivalent ovs-dpctl commands.
  53     - The ofproto library is now responsible for assigning OpenFlow port
  54       numbers.  An ofproto implementation should assign them when
  55       port_construct() is called.
  56     - All dpif-based bridges of a particular type share a common
  57       datapath called "ovs-<type>", e.g. "ovs-system".  The ovs-dpctl
  58       commands will now return information on that shared datapath.  To
  59       get the equivalent bridge-specific information, use the new
  60       "ovs-appctl dpif/*" commands.
  61     - Backward-incompatible changes:
  62       - Earlier Open vSwitch versions treated ANY as a wildcard in flow
  63         syntax.  OpenFlow 1.1 adds a port named ANY, which introduces a
  64         conflict.  ANY was rarely used in flow syntax, so we chose to
  65         retire that meaning of ANY in favor of the OpenFlow 1.1 meaning.
  66     - Patch ports no longer require kernel support, so they now work
  67       with FreeBSD and the kernel module built into Linux 3.3 and later.
  68
  69
  70 v1.9.0 - xx xxx xxxx
  71 --------------------
  72     - Datapath:
  73       - Support for ipv6 set action.
  74       - SKB mark matching and setting.
  75       - support for Linux kernels up to 3.8
  76     - FreeBSD is now a supported platform, thanks to code contributions from
  77       Gaetano Catalli, Ed Maste, and Giuseppe Lettieri.
  78     - ovs-bugtool: New --ovs option to report only OVS related information.
  79     - New %t and %T log escapes to identify the subprogram within a
  80       cooperating group of processes or threads that emitted a log message.
  81       The default log patterns now include this information.
  82     - OpenFlow:
  83       - Allow bitwise masking for SHA and THA fields in ARP, SLL and TLL
  84         fields in IPv6 neighbor discovery messages, and IPv6 flow label.
  85       - Adds support for writing to the metadata field for a flow.
  86     - Tunneling:
  87       - The tunneling code no longer assumes input and output keys are
  88         symmetric.  If they are not, PMTUD needs to be disabled for
  89         tunneling to work. Note this only applies to flow-based keys.
  90       - New support for a nonstandard form of GRE that supports a 64-bit key.
  91       - Tunnel Path MTU Discovery default value was set to 'disabled'.
  92         This feature is deprecated and will be removed soon.
  93       - Tunnel header caching removed.
  94     - ovs-ofctl:
  95       - Commands and actions that accept port numbers now also accept keywords
  96         that represent those ports (such as LOCAL, NONE, and ALL).  This is
  97         also the recommended way to specify these ports, for compatibility
  98         with OpenFlow 1.1 and later (which use the OpenFlow 1.0 numbers
  99         for these ports for different purposes).
 100     - ovs-dpctl:
 101       - Support requesting the port number with the "port_no" option in
 102         the "add-if" command.
 103     - ovs-pki: The "online PKI" features have been removed, along with
 104       the ovs-pki-cgi program that facilitated it, because of some
 105       alarmist insecurity claims.  We do not believe that these claims
 106       are true, but because we do not know of any users for this
 107       feature it seems better on balance to remove it.  (The ovs-pki-cgi
 108       program was not included in distribution packaging.)
 109     - ovsdb-server now enforces the immutability of immutable columns.  This
 110       was not enforced in earlier versions due to an oversight.
 111     - The following features are now deprecated.  They will be removed no
 112       earlier than February 2013.  Please email dev@openvswitch.org with
 113       concerns.
 114         - Bridge compatibility.
 115         - Stable bond mode.
 116         - The autopath action.
 117         - Interface type "null".
 118         - Numeric values for reserved ports (see "ovs-ofctl" note above).
 119         - Tunnel Path MTU Discovery.
 120         - CAPWAP tunnel support.
 121     - The data in the RARP packets can now be matched in the same way as the
 122       data in ARP packets.
 123
 124
 125 v1.8.0 - xx xxx xxxx
 126 ------------------------
 127     - New FAQ.  Please send updates and additions!
 128     - Authors of controllers, please read the new section titled "Action
 129       Reproduction" in DESIGN, which describes an Open vSwitch change in
 130       behavior in corner cases that may affect some controllers.
 131     - ovs-l3ping:
 132         - A new test utility that can create L3 tunnel between two Open
 133           vSwitches and detect connectivity issues.
 134     - ovs-ofctl:
 135         - New --sort and --rsort options for "dump-flows" command.
 136         - "mod-port" command can now control all OpenFlow config flags.
 137     - OpenFlow:
 138       - Allow general bitwise masking for IPv4 and IPv6 addresses in
 139         IPv4, IPv6, and ARP packets.  (Previously, only CIDR masks
 140         were allowed.)
 141       - Allow support for arbitrary Ethernet masks.  (Previously, only
 142         the multicast bit in the destination address could be individually
 143         masked.)
 144       - New field OXM_OF_METADATA, to align with OpenFlow 1.1.
 145       - The OFPST_QUEUE request now reports an error if a specified port or
 146         queue does not exist, or for requests for a specific queue on all
 147         ports, if the specified queue does not exist on any port.  (Previous
 148         versions generally reported an empty set of results.)
 149       - New "flow monitor" feature to allow controllers to be notified of
 150         flow table changes as they happen.
 151     - Additional protocols are not mirrored and dropped when forward-bpdu is
 152       false.  For a full list, see the ovs-vswitchd.conf.db man page.
 153     - Open vSwitch now sends RARP packets in situations where it previously
 154       sent a custom protocol, making it consistent with behavior of QEMU and
 155       VMware.
 156     - All Open vSwitch programs and log files now show timestamps in UTC,
 157       instead the local timezone, by default.
 158
 159
 160 v1.7.0 - 30 Jul 2012
 161 ------------------------
 162     - kernel modules are renamed. openvswitch_mod.ko is now
 163       openvswitch.ko and brcompat_mod.ko is now brcompat.ko.
 164     - Increased the number of NXM registers to 8.
 165     - Added ability to configure DSCP setting for manager and controller
 166       connections.  By default, these connections have a DSCP value of
 167       Internetwork Control (0xc0).
 168     - Added the granular link health statistics, 'cfm_health', to an
 169       interface.
 170     - OpenFlow:
 171         - Added support to mask nd_target for ICMPv6 neighbor discovery flows.
 172         - Added support for OpenFlow 1.3 port description (OFPMP_PORT_DESC)
 173           multipart messages.
 174     - ovs-ofctl:
 175         - Added the "dump-ports-desc" command to retrieve port
 176           information using the new port description multipart messages.
 177     - ovs-test:
 178         - Added support for spawning ovs-test server from the client.
 179         - Now ovs-test is able to automatically create test bridges and ports.
 180     - "ovs-dpctl dump-flows" now prints observed TCP flags in TCP flows.
 181     - Tripled flow setup performance.
 182     - The "coverage/log" command previously available through ovs-appctl
 183       has been replaced by "coverage/show".  The new command replies with
 184       coverage counter values, instead of logging them.
 185
 186
 187 v1.6.1 - 25 Jun 2012
 188 ------------------------
 189     - Allow OFPP_CONTROLLER as the in_port for packet-out messages.
 190
 191
 192 v1.6.0 - 24 Feb 2012
 193 ------------------------
 194     *** Internal only release ***
 195     - bonding
 196         - LACP bonds no longer fall back to balance-slb when negotiations fail.
 197           Instead they drop traffic.
 198         - The default bond_mode changed from SLB to active-backup, to protect
 199           unsuspecting users from the significant risks of SLB bonds (which are
 200           documented in vswitchd/INTERNALS).
 201         - Load balancing can be disabled by setting the bond-rebalance-interval
 202           to zero.
 203     - OpenFlow:
 204         - Added support for bitwise matching on TCP and UDP ports.
 205           See ovs-ofctl(8) for more information.
 206         - NXM flow dumps now include times elapsed toward idle and hard
 207           timeouts.
 208         - Added an OpenFlow extension NXT_SET_ASYNC_CONFIG that allows
 209           controllers more precise control over which OpenFlow messages they
 210           receive asynchronously.
 211         - New "fin_timeout" action.
 212         - Added "fin_timeout" support to "learn" action.
 213         - New Nicira action NXAST_CONTROLLER that offers additional features
 214           over output to OFPP_CONTROLLER.
 215     - When QoS settings for an interface do not configure a default queue
 216       (queue 0), Open vSwitch now uses a default configuration for that
 217       queue, instead of dropping all packets as in previous versions.
 218     - Logging:
 219         - Logging to console and file will have UTC timestamp as a default for
 220           all the daemons. An example of the default format is
 221           2012-01-27T16:35:17Z.  ovs-appctl can be used to change the default
 222           format as before.
 223         - The syntax of commands and options to set log levels was simplified,
 224           to make it easier to remember.
 225     - New support for limiting the number of flows in an OpenFlow flow
 226       table, with configurable policy for evicting flows upon
 227       overflow.  See the Flow_Table table in ovs-vswitch.conf.db(5)
 228       for more information.
 229     - New "enable-async-messages" column in the Controller table.  If set to
 230       false, OpenFlow connections to the controller will initially have all
 231       asynchronous messages disabled, overriding normal OpenFlow behavior.
 232     - ofproto-provider interface:
 233         - "struct rule" has a new member "used" that ofproto implementations
 234           should maintain by updating with ofproto_rule_update_used().
 235     - ovsdb-client:
 236         - The new option --timestamp causes the "monitor" command to print
 237           a timestamp with every update.
 238     - CFM module CCM broadcasts can now be tagged with an 802.1p priority.
 239
 240
 241 v1.5.0 - 01 Jun 2012
 242 ------------------------
 243     - OpenFlow:
 244         - Added support for querying, modifying, and deleting flows
 245           based on flow cookie when using NXM.
 246         - Added new NXM_PACKET_IN format.
 247         - Added new NXAST_DEC_TTL action.
 248     - ovs-ofctl:
 249         - Added daemonization support to the monitor and snoop commands.
 250     - ovs-vsctl:
 251         - The "find" command supports new set relational operators
 252           {=}, {!=}, {<}, {>}, {<=}, and {>=}.
 253     - ovsdb-tool now uses the typical database and schema installation
 254       directories as defaults.
 255     - The default MAC learning timeout has been increased from 60 seconds
 256       to 300 seconds.  The MAC learning timeout is now configurable.
 257
 258
 259 v1.4.0 - 30 Jan 2012
 260 ------------------------
 261     - Compatible with Open vSwitch kernel module included in Linux 3.3.
 262     - New "VLAN splinters" feature to work around buggy device drivers
 263       in old Linux versions.  (This feature is deprecated.  When
 264       broken device drivers are no longer in widespread use, we will
 265       delete this feature.)  See ovs-vswitchd.conf.db(5) for more
 266       information.
 267     - OpenFlow:
 268        - Added ability to match on IPv6 flow label through NXM.
 269        - Added ability to match on ECN bits in IPv4 and IPv6 through NXM.
 270        - Added ability to match on TTL in IPv4 and IPv6 through NXM.
 271        - Added ability to modify ECN bits in IPv4.
 272        - Added ability to modify TTL in IPv4.
 273     - ovs-vswitchd:
 274        - Don't require the "normal" action to use mirrors.  Traffic will
 275          now be properly mirrored for any flows, regardless of their
 276          actions.
 277        - Track packet and byte statistics sent on mirrors.
 278        - The sFlow implementation can now usually infer the correct agent
 279          device instead of having to be told explicitly.
 280     - ovs-appctl:
 281       - New "fdb/flush" command to flush bridge's MAC learning table.
 282     - ovs-test:
 283       - A new distributed testing tool that allows one to diagnose performance
 284         and connectivity issues. This tool currently is not included in RH or
 285         Xen packages.
 286     - RHEL packaging now supports integration with Red Hat network scripts.
 287     - bonding:
 288       - Post 1.4.*, OVS will be changing the default bond mode from balance-slb
 289         to active-backup.  SLB bonds carry significant risks with them
 290         (documented vswitchd/INTERNALS) which we want to prevent unsuspecting
 291         users from running into.  Users are advised to update any scripts or
 292         configuration which may be negatively impacted by explicitly setting
 293         the bond mode which they want to use.
 294
 295
 296 v1.3.0 - 09 Dec 2011
 297 ------------------------
 298     - OpenFlow:
 299       - Added an OpenFlow extension which allows the "output" action to accept
 300         NXM fields.
 301       - Added an OpenFlow extension for flexible learning.
 302       - Bumped number of NXM registers from four to five.
 303     - ovs-appctl:
 304       - New "version" command to determine version of running daemon.
 305       - If no argument is provided for "cfm/show", displays detailed
 306         information about all interfaces with CFM enabled.
 307       - If no argument is provided for "lacp/show", displays detailed
 308         information about all ports with LACP enabled.
 309     - ovs-dpctl:
 310       - New "set-if" command to modify a datapath port's configuration.
 311     - ovs-vswitchd:
 312       - The software switch now supports 255 OpenFlow tables, instead
 313         of just one.  By default, only table 0 is consulted, but the
 314         new NXAST_RESUBMIT_TABLE action can look up in additional
 315         tables.  Tables 128 and above are reserved for use by the
 316         switch itself; please use only tables 0 through 127.
 317       - Add support for 802.1D spanning tree (STP).
 318     - Fragment handling extensions:
 319       - New OFPC_FRAG_NX_MATCH fragment handling mode, in which L4
 320         fields are made available for matching in fragments with
 321         offset 0.
 322       - New NXM_NX_IP_FRAG match field for matching IP fragments (usable
 323         via "ip_frag" in ovs-ofctl).
 324       - New ovs-ofctl "get-frags" and "set-frags" commands to get and set
 325         fragment handling policy.
 326     - CAPWAP tunneling now supports an extension to transport a 64-bit key.
 327       By default it remains compatible with the old version and other
 328       standards-based implementations.
 329     - Flow setups are now processed in a round-robin manner across ports
 330       to prevent any single client from monopolizing the CPU and conducting
 331       a denial of service attack.
 332     - Added support for native VLAN tagging.  A new "vlan_mode"
 333       parameter can be set for "port". Possible values: "access",
 334       "trunk", "native-tagged" and "native-untagged".
 335     - test-openflowd has been removed.  Please use ovs-vswitchd instead.
 336
 337 v1.2.0 - 03 Aug 2011
 338 ------------------------
 339     - New "ofproto" abstraction layer to ease porting to hardware
 340       switching ASICs.
 341     - Packaging for Red Hat Enterprise Linux 5.6 and 6.0.
 342     - Datapath support for Linux kernels up to 3.0.
 343     - OpenFlow:
 344       - New "bundle" and "bundle_load" action extensions.
 345     - Database:
 346       - Implement table unique constraints.
 347       - Support cooperative locking between callers.
 348     - ovs-dpctl:
 349       - New "-s" option for "show" command prints packet and byte
 350         counters for each port.
 351     - ovs-ofctl:
 352       - New "--readd" option for "replace-flows".
 353     - ovs-vsctl:
 354       - New "show" command to print an overview of configuration.
 355       - New "comment" command to add remark that explains intentions.
 356     - ovs-brcompatd has been rewritten to fix long-standing bugs.
 357     - ovs-openflowd has been renamed test-openflowd and moved into the
 358       tests directory.  Its presence confused too many users.  Please
 359       use ovs-vswitchd instead.
 360     - New ovs-benchmark utility to test flow setup performance.
 361     - A new log level "off" has been added.  Configuring a log facility
 362       "off" prevents any messages from being logged to it.  Previously,
 363       "emer" was effectively "off" because no messages were ever logged at
 364       level "emer".  Now, errors that cause a process to exit are logged
 365       at "emer" level.
 366     - "configure" option --with-l26 has been renamed --with-linux, and
 367       --with-l26-source has been renamed --with-linux-source.  The old
 368       names will be removed after the next release, so please update
 369       your scripts.
 370     - The "-2.6" suffix has been dropped from the datapath/linux-2.6 and
 371       datapath/linux-2.6/compat-2.6 directories.
 372     - Feature removals:
 373       - Dropped support for "tun_id_from_cookie" OpenFlow extension.
 374            Please use the extensible match extensions instead.
 375       - Removed the Maintenance_Point and Monitor tables in an effort
 376         to simplify 802.1ag configuration.
 377     - Performance and scalability improvements
 378     - Bug fixes
 379
 380 v1.1.0 - 05 Apr 2011
 381 ------------------------
 382     - Ability to define policies over IPv6
 383     - LACP
 384     - 802.1ag CCM
 385     - Support for extensible match extensions to OpenFlow
 386     - QoS:
 387       - Support for HFSC qdisc.
 388       - Queue used by in-band control can now be configured.
 389     - Kernel:
 390       - Kernel<->userspace interface has been reworked and should be
 391         close to a stable ABI now.
 392       - "Port group" concept has been dropped.
 393     - GRE over IPSEC tunnels
 394     - Bonding:
 395       - New active backup bonding mode.
 396       - New L4 hashing support when LACP is enabled.
 397       - Source MAC hash now includes VLAN field also.
 398       - miimon support.
 399     - Greatly improved handling of large flow tables
 400     - ovs-dpctl:
 401       - "show" command now prints full vport configuration.
 402       - "dump-groups" command removed since kernel support for
 403         port groups was dropped.
 404     - ovs-vsctl:
 405       - New commands for working with the new Managers table.
 406       - "list" command enhanced with new formatting options and --columns
 407         option.
 408       - "get" command now accepts new --id option.
 409       - New "find" command.
 410     - ovs-ofctl:
 411       - New "queue-stats" command for printing queue stats.
 412       - New commands "replace-flows" and "diff-flows".
 413       - Commands to add and remove flows can now read from files.
 414       - New --flow-format option to enable or disable NXM.
 415       - New --more option to increase OpenFlow message verbosity.
 416       - Removed "tun-cookie" command, which is no longer useful.
 417     - ovs-controller enhancements for testing various features.
 418     - New ovs-vlan-test command for testing for Linux kernel driver VLAN
 419       bugs.  New ovs-vlan-bug-workaround command for enabling and
 420       disabling a workaround for these driver bugs.
 421     - OpenFlow support:
 422       - "Resubmit" actions now update flow statistics.
 423       - New "register" extension for use in matching and actions, via NXM.
 424       - New "multipath" experimental action extension.
 425       - New support for matching multicast Ethernet frames, via NXM.
 426       - New extension for OpenFlow vendor error codes.
 427       - New extension to set the QoS output queue without actually
 428         sending to an output port.
 429       - Open vSwitch now reports a single flow table, instead of
 430         separate hash and wildcard tables.  This better models the
 431         current implementation.
 432       - New experimental "note" action.
 433       - New "ofproto/trace" ovs-appctl command and associated utilities
 434         to ease debugging complex flow tables.
 435     - Database:
 436       - Schema documentation now includes an entity-relationship diagram.
 437       - The database is now garbage collected.  In most tables,
 438         unreferenced rows will be deleted automatically.
 439       - Many tables now include statistics updated periodically by
 440         ovs-vswitchd or ovsdb-server.
 441       - Every table now has an "external-ids" column for use by OVS
 442         integrators.
 443       - There is no default controller anymore.  Each bridge must have its
 444         controller individually specified.
 445       - The "fail-mode" is now a property of a Bridge instead of a Controller.
 446       - New versioning and checksum features.
 447       - New Managers table and manager_options column in Open_vSwitch table
 448         for specifying managers.  The old "managers" column in the
 449         Open_vSwitch table has been removed.
 450       - Many "name" columns are now immutable.
 451     - Feature removals:
 452       - Dropped support for XenServer pre-5.6.100.
 453       - Dropped support for Linux pre-2.6.18.
 454       - Dropped controller discovery support.
 455       - Dropped "ovs-ofctl status" and the OpenFlow extension that it used.
 456         Statistics reporting in the database is a rough equivalent.
 457       - Dropped the "corekeeper" package (now separate, at
 458         http://openvswitch.org/cgi-bin/gitweb.cgi?p=corekeeper).
 459     - Performance and scalability improvements
 460     - Bug fixes
 461
 462 v1.1.0pre2 - 13 Sep 2010
 463 ------------------------
 464     - Bug fixes
 465
 466 v1.1.0pre1 - 31 Aug 2010
 467 ------------------------
 468     - OpenFlow 1.0 slicing (QoS) functionality
 469     - Python bindings for configuration database (no write support)
 470     - Performance and scalability improvements
 471     - Bug fixes
 472
 473 v1.0.1 - 31 May 2010
 474 --------------------
 475     - New "patch" interface type
 476     - Bug fixes
 477
 478 v1.0.0 - 15 May 2010
 479 --------------------
 480     - Configuration database with remote management
 481     - OpenFlow 1.0
 482     - GRE tunneling
 483     - Support for XenServer 5.5 and 5.6
 484     - Performance and scalability improvements
 485     - Bug fixes
 486
 487 v0.99.2 - 18 Feb 2010
 488 ---------------------
 489     - Bug fixes
 490
 491 v0.99.1 - 25 Jan 2010
 492 ---------------------
 493     - Add support for sFlow(R)
 494     - Make headers compatible with C++
 495     - Bug fixes
 496
 497 v0.99.0 - 14 Jan 2010
 498 ---------------------
 499     - User-space forwarding engine
 500     - Bug fixes
 501
 502 v0.90.7 - 29 Nov 2009
 503 ---------------------
 504     - Add support for NetFlow active timeouts
 505     - Bug fixes
 506
 507 v0.90.6 - 6 Oct 2009
 508 --------------------
 509     - Bug fixes
 510
 511 v0.90.5 - 21 Sep 2009
 512 ---------------------
 513     - Generalize in-band control to more diverse network setups
 514     - Bug fixes