The list of remaining work items for OpenFlow 1.1 is below. It is
probably incomplete.
- * Implement Write-Actions instruction.
-
* The new in_phy_port field in OFPT_PACKET_IN needs some kind of
implementation. It has a sensible interpretation for tunnels
but in general the physical port is not in the datapath for OVS
so the value is not necessarily meaningful. We might have to
just fix it as the same as in_port.
+ [required for OF1.1; optional for OF1.2+]
- * On OF1.1+ flow_mods, updates by MODIFY are now much better
- specified. Check that OVS implements the new behavior, fix it
- if not.
-
- * OFPT_TABLE_MOD stats. This is new in OF1.1, so we need to
+ * OFPT_TABLE_MOD message. This is new in OF1.1, so we need to
implement it. It should be implemented so that the default OVS
behavior does not change.
+ [required for OF1.1 and OF1.2]
* MPLS. Simon Horman maintains a patch series that adds this
feature. This is partially merged.
-
- * SCTP. Joe Stringer maintains a patch series that adds this
- feature. It has received review comments that need to be
- addressed before it is merged.
+ [optional for OF1.1+]
* Match and set double-tagged VLANs (QinQ). This requires kernel
work for reasonable performance.
+ [optional for OF1.1+]
* VLANs tagged with 88a8 Ethertype. This requires kernel work for
reasonable performance.
-
- * Groups.
+ [required for OF1.1+]
OpenFlow 1.2
------------
-OpenFlow 1.2 support requires OpenFlow 1.1 as a prerequisite, plus the
-following additional work. (This is based on the change log at the
-end of the OF1.2 spec. I didn't compare the specs carefully yet.)
-
- * OFPT_FLOW_MOD:
-
- * MODIFY and MODIFY_STRICT commands now never insert new flows
- in the table. We will still need variations that do,
- though, both to support older OpenFlow protocols and to get
- sensible behavior for the internal implementation of the
- NXAST_LEARN action.
-
- * New flag OFPFF_RESET_COUNTS.
-
- * New cookie field behavior.
-
- * Add ability to delete flow in all tables.
+OpenFlow 1.2 support requires OpenFlow 1.1 as a prerequisite. All the
+additional work specific to Openflow 1.2 are complete. (This is based
+on the change log at the end of the OF1.2 spec. I didn't compare the
+specs carefully yet.)
- * Update DESIGN to describe OF1.2 behavior also.
+ * Action translation needs some work to transform OpenFlow 1.1
+ field modification actions into OpenFlow 1.2+ "set-field"
+ actions, because OpenFlow 1.2 dropped support for the OF1.1
+ actions.
OpenFlow 1.3
------------
didn't compare the specs carefully yet.)
* Add support for multipart requests.
+ Currently we always report OFPBRC_MULTIPART_BUFFER_OVERFLOW.
+ [optional for OF1.3+]
* Add OFPMP_TABLE_FEATURES statistics.
+ [optional for OF1.3+]
* More flexible table miss support.
+ This requires the following.
+ - Change the default table-miss action (in the absense of table-miss
+ entry) from packet_in to drop for OF1.3+. Decide what to do if
+ a switch is configured to support multiple OF versions.
+ [required for OF1.3+]
* IPv6 extension header handling support. Fully implementing this
requires kernel support. This likely will take some careful and
probably time-consuming design work. The actual coding, once
that is all done, is probably 2 or 3 days work.
+ [optional for OF1.3+]
- * Per-flow meters. Similar to IPv6 extension headers in kernel
- and design requirements. Might be politically difficult to add
- directly to the kernel module, since its functionality overlaps
- with tc. Ideally, therefore, we could implement these somehow
- with tc, but I haven't investigated whether that makes sense.
+ * Per-flow meters. OpenFlow protocol support is now implemented.
+ Support for the special OFPM_SLOWPATH and OFPM_CONTROLLER meters
+ is missing. Support for the software switch is under review.
+ [optional for OF1.3+]
* Per-connection event filtering. OF1.3 adopted Open vSwitch's
existing design for this feature so implementation should be
easy.
+ [required for OF1.3+]
- * Auxiliary connections. These are optional, so a minimal
- implementation would not need them. An implementation in
- generic code might be a week's worth of work. The value of an
- implementation in generic code is questionable, though, since
- much of the benefit of axuiliary connections is supposed to be
- to take advantage of hardware support. (We could make the
- kernel module somehow send packets across the auxiliary
- connections directly, for some kind of "hardware" support, if we
- judged it useful enough.)
+ * Auxiliary connections. An implementation in generic code might
+ be a week's worth of work. The value of an implementation in
+ generic code is questionable, though, since much of the benefit
+ of axuiliary connections is supposed to be to take advantage of
+ hardware support. (We could make the kernel module somehow
+ send packets across the auxiliary connections directly, for
+ some kind of "hardware" support, if we judged it useful enough.)
+ [optional for OF1.3+]
- * MPLS BoS matching. (Included in Simon's MPLS series?)
+ * MPLS BoS matching.
+ Part of MPLS patchset by Simon Horman.
+ [optional for OF1.3+]
* Provider Backbone Bridge tagging. I don't plan to implement
this (but we'd accept an implementation).
+ [optional for OF1.3+]
- * Rework tag order. I'm not sure whether we need to do anything
- for this.
-
- * Duration for queue stats. (Duration for port stats is already
- implemented.)
+ * Rework tag order.
+ Part of MPLS patchset by Simon Horman.
+ [required for v1.3+]
* On-demand flow counters. I think this might be a real
optimization in some cases for the software switch.
+ [optional for OF1.3+]
+
+ONF OpenFlow Exensions for 1.3.X Pack1
+--------------------------------------
+
+OpenFlow 1.3 has a bunch of ONF extentions.
+Many of them are necessary for OpenFlow 1.4 as well.
+
+ * Flow entry notifications
+ This seems to be modelled after OVS's NXST_FLOW_MONITOR.
+ [EXT-187]
+ [required for OF1.4+]
+
+ * Role Status
+ [EXT-191]
+ [required for OF1.4+]
+
+ * Flow entry eviction
+ OVS has flow eviction functionality.
+ table_mod OFPTC_EVICTION, flow_mod 'importance', and
+ table_desc ofp_table_mod_prop_eviction need to be implemented.
+ [EXT-192-e]
+ [optional for OF1.4+]
+
+ * Vacancy events
+ [EXT-192-v]
+ [optional for OF1.4+]
+
+ * Bundle
+ Transactional modification. OpenFlow 1.4 requires to support
+ flow_mods and port_mods in a bundle.
+ (Not related to OVS's 'ofbundle' stuff.)
+ [EXT-230]
+ [required for OF1.4+]
+
+ * Table synchronisation
+ [EXT-232]
+ [optional for OF1.4+]
+
+ * Group notifications
+ [EXT-235]
+ [optional for OF1.4+]
+
+ * Bad flow entry priority error
+ Probably not so useful to the software switch.
+ [EXT-236]
+ [optional for OF1.4+]
+
+ * Set async config error
+ [EXT-237]
+ [optional for OF1.4+]
+
+ * PBB UCA header field
+ [EXT-256]
+ [optional for OF1.4+]
+
+ * Duplicate instruction error
+ We already have ONFBIC_DUP_INSTRUCTION.
+ [EXT-260]
+ [required for OF1.4+]
+
+ * Multipart timeout error
+ [EXT-264]
+ [required for OF1.4+]
+
+OpenFlow 1.4
+------------
+
+ * More extensible wire protocol
+ Many on-wire structures got TLVs.
+ [EXT-262]
+ [required for OF1.4+]
+
+ * More descriptive reasons for packet-in
+ Distinguish OFPR_APPLY_ACTION, OFPR_ACTION_SET, OFPR_GROUP,
+ OFPR_PACKET_OUT. NO_MATCH was renamed to OFPR_TABLE_MISS.
+ [EXT-136]
+ [required for OF1.4+]
+
+ * Optical port properties
+ [EXT-154]
+ [optional for OF1.4+]
+
+ * Flow-removed reason for meter delete
+ Report flow removal due to meter deletion with OFPRR_METER_DELETE.
+ [EXT-261]
+ [optional for OF1.4+]
+
+ * Meter notifications
+ [EXT-235]
+ [optional for OF1.4+]
+
+General
+-----
+
+ * ovs-ofctl(8) often lists as Nicira extensions features that
+ later OpenFlow versions support in standard ways.
How to contribute
-----------------
git://git.onelab.eu / sliver-openvswitch.git / blobdiff