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