NEWS

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