ofproto: Check for overlapping flows only in the target table.

[mirror_ovs.git] / NEWS

Post-v1.2.0
------------------------
    - OpenFlow:
      - Added an OpenFlow extension which allows the "output" action to accept
        NXM fields.
      - Added an OpenFlow extension for flexible learning.
      - Bumped number of NXM registers from four to five.
    - ovs-appctl:
      - New "version" command to determine version of running daemon.
      - If no argument is provided for "cfm/show", displays detailed
        information about all interfaces with CFM enabled.
      - If no argument is provided for "lacp/show", displays detailed
        information about all ports with LACP enabled.
    - ovs-vswitchd:
      - The software switch now supports 255 OpenFlow tables, instead
        of just one.  By default, only table 0 is consulted, but the
        new NXAST_RESUBMIT_TABLE action can look up in additional
        tables.  Tables 128 and above are reserved for use by the
        switch itself; please use only tables 0 through 127.
      - Add support for 802.1D spanning tree (STP).
    - Fragment handling extensions:
      - New OFPC_FRAG_NX_MATCH fragment handling mode, in which L4
        fields are made available for matching in fragments with
        offset 0.
      - New NXM_NX_IP_FRAG match field for matching IP fragments (usable
        via "ip_frag" in ovs-ofctl).
      - New ovs-ofctl "get-frags" and "set-frags" commands to get and set
        fragment handling policy.
    - CAPWAP tunneling now supports an extension to transport a 64-key.  By
      default it remains compatible with the old version and other
      standards-based implementations.
    - Flow setups are now processed in a round-robin manner across ports
      to prevent any single client from monopolizing the CPU and conducting
      a denial of service attack.
    - Added support for native VLAN tagging.  A new "vlan_mode"
      parameter can be set for "port". Possible values: "access",
      "trunk", "native-tagged" and "native-untagged".

v1.2.0 - 03 Aug 2011
------------------------
    - New "ofproto" abstraction layer to ease porting to hardware
      switching ASICs.
    - Packaging for Red Hat Enterprise Linux 5.6 and 6.0.
    - Datapath support for Linux kernels up to 3.0.
    - OpenFlow:
      - New "bundle" and "bundle_load" action extensions.
    - Database:
      - Implement table unique constraints.
      - Support cooperative locking between callers.
    - ovs-dpctl:
      - New "-s" option for "show" command prints packet and byte
        counters for each port.
    - ovs-ofctl:
      - New "--readd" option for "replace-flows".
    - ovs-vsctl:
      - New "show" command to print an overview of configuration.
      - New "comment" command to add remark that explains intentions.
    - ovs-brcompatd has been rewritten to fix long-standing bugs.
    - ovs-openflowd has been renamed test-openflowd and moved into the
      tests directory.  Its presence confused too many users.  Please
      use ovs-vswitchd instead.
    - New ovs-benchmark utility to test flow setup performance.
    - A new log level "off" has been added.  Configuring a log facility
      "off" prevents any messages from being logged to it.  Previously,
      "emer" was effectively "off" because no messages were ever logged at
      level "emer".  Now, errors that cause a process to exit are logged
      at "emer" level.
    - "configure" option --with-l26 has been renamed --with-linux, and
      --with-l26-source has been renamed --with-linux-source.  The old
      names will be removed after the next release, so please update
      your scripts.
    - The "-2.6" suffix has been dropped from the datapath/linux-2.6 and
      datapath/linux-2.6/compat-2.6 directories.
    - Feature removals:
      - Dropped support for "tun_id_from_cookie" OpenFlow extension.
	    Please use the extensible match extensions instead.
      - Removed the Maintenance_Point and Monitor tables in an effort
        to simplify 802.1ag configuration.
    - Performance and scalability improvements
    - Bug fixes

v1.1.0 - 05 Apr 2011
------------------------
    - Ability to define policies over IPv6
    - LACP
    - 802.1ag CCM
    - Support for extensible match extensions to OpenFlow
    - QoS:
      - Support for HFSC qdisc.
      - Queue used by in-band control can now be configured.
    - Kernel:
      - Kernel<->userspace interface has been reworked and should be
        close to a stable ABI now.
      - "Port group" concept has been dropped.
    - GRE over IPSEC tunnels
    - Bonding:
      - New active backup bonding mode.
      - New L4 hashing support when LACP is enabled.
      - Source MAC hash now includes VLAN field also.
      - miimon support.
    - Greatly improved handling of large flow tables
    - ovs-dpctl:
      - "show" command now prints full vport configuration.
      - "dump-groups" command removed since kernel support for
        port groups was dropped.
    - ovs-vsctl:
      - New commands for working with the new Managers table.
      - "list" command enhanced with new formatting options and --columns
        option.
      - "get" command now accepts new --id option.
      - New "find" command.
    - ovs-ofctl:
      - New "queue-stats" command for printing queue stats.
      - New commands "replace-flows" and "diff-flows".
      - Commands to add and remove flows can now read from files.
      - New --flow-format option to enable or disable NXM.
      - New --more option to increase OpenFlow message verbosity.
      - Removed "tun-cookie" command, which is no longer useful.
    - ovs-controller enhancements for testing various features.
    - New ovs-vlan-test command for testing for Linux kernel driver VLAN
      bugs.  New ovs-vlan-bug-workaround command for enabling and
      disabling a workaround for these driver bugs.
    - OpenFlow support:
      - "Resubmit" actions now update flow statistics.
      - New "register" extension for use in matching and actions, via NXM.
      - New "multipath" experimental action extension.
      - New support for matching multicast Ethernet frames, via NXM.
      - New extension for OpenFlow vendor error codes.
      - New extension to set the QoS output queue without actually
        sending to an output port.
      - Open vSwitch now reports a single flow table, instead of
        separate hash and wildcard tables.  This better models the
        current implementation.
      - New experimental "note" action.
      - New "ofproto/trace" ovs-appctl command and associated utilities
        to ease debugging complex flow tables.
    - Database:
      - Schema documentation now includes an entity-relationship diagram.
      - The database is now garbage collected.  In most tables,
        unreferenced rows will be deleted automatically.
      - Many tables now include statistics updated periodically by
        ovs-vswitchd or ovsdb-server.
      - Every table now has an "external-ids" column for use by OVS
        integrators.
      - There is no default controller anymore.  Each bridge must have its
        controller individually specified.
      - The "fail-mode" is now a property of a Bridge instead of a Controller.
      - New versioning and checksum features.
      - New Managers table and manager_options column in Open_vSwitch table
        for specifying managers.  The old "managers" column in the
        Open_vSwitch table has been removed.
      - Many "name" columns are now immutable.
    - Feature removals:
      - Dropped support for XenServer pre-5.6.100.
      - Dropped support for Linux pre-2.6.18.
      - Dropped controller discovery support.
      - Dropped "ovs-ofctl status" and the OpenFlow extension that it used.
        Statistics reporting in the database is a rough equivalent.
      - Dropped the "corekeeper" package (now separate, at
        http://openvswitch.org/cgi-bin/gitweb.cgi?p=corekeeper).
    - Performance and scalability improvements
    - Bug fixes

v1.1.0pre2 - 13 Sep 2010
------------------------
    - Bug fixes

v1.1.0pre1 - 31 Aug 2010
------------------------
    - OpenFlow 1.0 slicing (QoS) functionality
    - Python bindings for configuration database (no write support)
    - Performance and scalability improvements
    - Bug fixes

v1.0.1 - 31 May 2010
--------------------
    - New "patch" interface type
    - Bug fixes

v1.0.0 - 15 May 2010
--------------------
    - Configuration database with remote management
    - OpenFlow 1.0
    - GRE tunneling
    - Support for XenServer 5.5 and 5.6
    - Performance and scalability improvements
    - Bug fixes

v0.99.2 - 18 Feb 2010
---------------------
    - Bug fixes

v0.99.1 - 25 Jan 2010
---------------------
    - Add support for sFlow(R)
    - Make headers compatible with C++
    - Bug fixes

v0.99.0 - 14 Jan 2010
---------------------
    - User-space forwarding engine
    - Bug fixes

v0.90.7 - 29 Nov 2009
---------------------
    - Add support for NetFlow active timeouts
    - Bug fixes

v0.90.6 - 6 Oct 2009
--------------------
    - Bug fixes

v0.90.5 - 21 Sep 2009
---------------------
    - Generalize in-band control to more diverse network setups
    - Bug fixes