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dpctl: Add the option 'pmd' for dump-flows.
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1 Post-v2.14.0
2 ---------------------
3 - OVSDB:
4 * New unixctl command 'ovsdb-server/get-db-storage-status' to show the
5 status of the storage that's backing a database.
6 * New unixctl command 'ovsdb-server/memory-trim-on-compaction on|off'.
7 If turned on, ovsdb-server will try to reclaim all the unused memory
8 after every DB compaction back to OS. Disabled by default.
9 * Maximum backlog on RAFT connections limited to 500 messages or 4GB.
10 Once threshold reached, connection is dropped (and re-established).
11 Use the 'cluster/set-backlog-threshold' command to change limits.
12 - DPDK:
13 * Removed support for vhost-user dequeue zero-copy.
14 - Userspace datapath:
15 * Add the 'pmd' option to "ovs-appctl dpctl/dump-flows", which
16 restricts a flow dump to a single PMD thread if set.
17 - The environment variable OVS_UNBOUND_CONF, if set, is now used
18 as the DNS resolver's (unbound) configuration file.
19 - Linux datapath:
20 * Support for kernel versions up to 5.8.x.
21 - Terminology:
22 * The terms "master" and "slave" have been replaced by "primary" and
23 "secondary", respectively, for OpenFlow connection roles.
24 * The term "slave" has been replaced by "member", for bonds, LACP, and
25 OpenFlow bundle actions.
26
27
28 v2.14.0 - 17 Aug 2020
29 ---------------------
30 - ovs-vswitchd no longer deletes datapath flows on exit by default.
31 - OpenFlow:
32 * The OpenFlow ofp_desc/serial_num may now be configured by setting the
33 value of other-config:dp-sn in the Bridge table.
34 * Added support to watch CONTROLLER port status in fast failover group.
35 * New action "delete_field".
36 - DPDK:
37 * Deprecated DPDK pdump packet capture support removed.
38 * Deprecated DPDK ring ports (dpdkr) are no longer supported.
39 * Add hardware offload support for VLAN Push/Pop actions (experimental).
40 * Add hardware offload support for matching IPv6 protocol (experimental).
41 * Add hardware offload support for set of IPv6 src/dst/ttl
42 and tunnel push-output actions (experimental).
43 * OVS validated with DPDK 19.11.2, due to the inclusion of fixes for
44 CVE-2020-10722, CVE-2020-10723, CVE-2020-10724, CVE-2020-10725 and
45 CVE-2020-10726, this DPDK version is strongly recommended to be used.
46 * New 'ovs-appctl dpdk/log-list' and 'ovs-appctl dpdk/log-set' commands
47 to list and change log levels in DPDK components.
48 * Vhost-user Dequeue zero-copy support is deprecated and will be removed
49 in the next release.
50 - Linux datapath:
51 * Support for kernel versions up to 5.5.x.
52 - AF_XDP:
53 * New netdev class 'afxdp-nonpmd' for netdev-afxdp to save CPU cycles
54 by enabling interrupt mode.
55 - Userspace datapath:
56 * Removed artificial datapath flow limit that was 65536.
57 Now number of datapath flows is fully controlled by revalidators and the
58 'other_config:flow-limit' knob.
59 * Add support for conntrack zone-based timeout policy.
60 * New configuration knob 'other_config:lb-output-action' for bond ports
61 that enables new datapath action 'lb_output' to avoid recirculation
62 in balance-tcp mode. Disabled by default.
63 * Add runtime CPU ISA detection to allow optimized ISA functions
64 * Add support for dynamically changing DPCLS subtable lookup functions
65 * Add ISA optimized DPCLS lookup function using AVX512
66 - New configuration knob 'other_config:bond-primary' for AB bonds
67 that specifies interface will be the preferred port if it is active.
68 - Tunnels: TC Flower offload
69 * Tunnel Local endpoint address masked match are supported.
70 * Tunnel Romte endpoint address masked match are supported.
71 - GTP-U Tunnel Protocol
72 * Add two new fields: tun_gtpu_flags, tun_gtpu_msgtype.
73 * Only support for userspace datapath.
74
75
76 v2.13.0 - 14 Feb 2020
77 ---------------------
78 - OVN:
79 * OVN has been removed from this repository. It now exists as a
80 separate project. You can find it at
81 https://github.com/ovn-org/ovn.git
82 - Userspace datapath:
83 * Add option to enable, disable and query TCP sequence checking in
84 conntrack.
85 * Add support for conntrack zone limits.
86 * Command "ovs-appctl dpctl/dump-flows" refactored to show subtable
87 miniflow bits for userspace datapath.
88 - AF_XDP:
89 * New option 'use-need-wakeup' for netdev-afxdp to control enabling
90 of corresponding 'need_wakeup' flag in AF_XDP rings. Enabled by default
91 if supported by libbpf.
92 * 'xdpmode' option for netdev-afxdp renamed to 'xdp-mode'.
93 Modes also updated. New values:
94 native-with-zerocopy - former DRV
95 native - new one, DRV without zero-copy
96 generic - former SKB
97 best-effort [default] - new one, chooses the best available from
98 3 above modes
99 - DPDK:
100 * DPDK pdump packet capture support disabled by default. New configure
101 option '--enable-dpdk-pdump' to enable it.
102 * DPDK pdump support is deprecated and will be removed in next releases.
103 * DPDK ring ports (dpdkr) are deprecated and will be removed in next
104 releases.
105 * Add support for DPDK 19.11.
106 * Add hardware offload support for output, drop, set of MAC, IPv4 and
107 TCP/UDP ports actions (experimental).
108 * Add experimental support for TSO.
109 - RSTP:
110 * The rstp_statistics column in Port table will only be updated every
111 stats-update-interval configured in Open_vSwitch table.
112 - OVSDB:
113 * When ovsdb-server is running in backup mode, the default value of probe
114 interval is increased to 60 seconds for the connection to the
115 replication server. This value is configurable with the unixctl
116 command - ovsdb-server/set-active-ovsdb-server-probe-interval.
117 * ovsdb-server: New OVSDB extension to allow clients to specify row UUIDs.
118 - 'ovs-appctl dpctl/dump-flows' can now show offloaded=partial for
119 partially offloaded flows, dp:dpdk for fully offloaded by dpdk, and
120 type filter supports new filters: "dpdk" and "partially-offloaded".
121
122 v2.12.0 - 03 Sep 2019
123 ---------------------
124 - DPDK:
125 * New option 'other_config:dpdk-socket-limit' to limit amount of
126 hugepage memory that can be used by DPDK.
127 * Add support for vHost Post-copy Live Migration (experimental).
128 * OVS validated with DPDK 18.11.2 which is the new minimal supported
129 version.
130 * DPDK 18.11.1 and lower is no longer supported.
131 * New option 'tx-retries-max' to set the maximum amount of vhost tx
132 retries that can be made.
133 - OpenFlow:
134 * All features required by OpenFlow 1.5 are now implemented, so
135 ovs-vswitchd now enables OpenFlow 1.5 by default (in addition to
136 OpenFlow 1.0 to 1.4).
137 * Removed support for OpenFlow 1.6 (draft), which ONF abandoned.
138 * New action "check_pkt_larger".
139 * Support for OpenFlow 1.5 "meter" action.
140 - Userspace datapath:
141 * ICMPv6 ND enhancements: support for match and set ND options type
142 and reserved fields.
143 * Add v4/v6 fragmentation support for conntrack.
144 * New ovs-appctl "dpctl/ipf-set-enabled" and "dpctl/ipf-set-disabled"
145 commands for userspace datapath conntrack fragmentation support.
146 * New "ovs-appctl dpctl/ipf-set-min-frag" command for userspace
147 datapath conntrack fragmentation support.
148 * New "ovs-appctl dpctl/ipf-set-max-nfrags" command for userspace datapath
149 conntrack fragmentation support.
150 * New "ovs-appctl dpctl/ipf-get-status" command for userspace datapath
151 conntrack fragmentation support.
152 * New action "check_pkt_len".
153 * Port configuration with "other-config:priority-tags" now has a mode
154 that retains the 802.1Q header even if VLAN and priority are both zero.
155 * 'ovs-appctl exit' now implies cleanup of non-internal ports in userspace
156 datapath regardless of '--cleanup' option. Use '--cleanup' to remove
157 internal ports too.
158 * Removed experimental tag for SMC cache.
159 * Datapath classifer code refactored to enable function pointers to select
160 the lookup implementation at runtime. This enables specialization of
161 specific subtables based on the miniflow attributes, enhancing the
162 performance of the subtable search.
163 * Add Linux AF_XDP support through a new experimental netdev type "afxdp".
164 - OVSDB:
165 * OVSDB clients can now resynchronize with clustered servers much more
166 quickly after a brief disconnection, saving bandwidth and CPU time.
167 See section 4.1.15 of ovsdb-server(7) for details of related OVSDB
168 protocol extension.
169 * Support to convert from cluster database to standalone database is now
170 available when clustered is down and cannot be revived using ovsdb-tool
171 . Check "Database Migration Commands" in ovsdb-tool man section.
172 - OVN:
173 * IPAM/MACAM:
174 - select IPAM mac_prefix in a random manner if not provided by the user
175 - add the capability to specify a static IPv4 and/or IPv6 address and
176 get the L2 one allocated dynamically using the following syntax:
177 ovn-nbctl lsp-set-addresses <port> "dynamic <IPv4 addr> <IPv6 addr>"
178 * Added the HA chassis group support.
179 * Added 'external' logical port support.
180 * Added Policy-based routing(PBR) support to create permit/deny/reroute
181 policies on the logical router. New table(Logical_Router_Policy) added in
182 OVN-NB schema. New "ovn-nbctl" commands to add/delete/list PBR policies.
183 * Support for Transport Zones, a way to separate chassis into
184 logical groups which results in tunnels only been formed between
185 members of the same transport zone(s).
186 * Support for IGMP Snooping and IGMP Querier.
187 - New QoS type "linux-netem" on Linux.
188 - Added support for TLS Server Name Indication (SNI).
189 - Linux datapath:
190 * Support for the kernel versions 4.19.x and 4.20.x.
191 * Support for the kernel version 5.0.x.
192 * Add support for conntrack zone-based timeout policy.
193 - 'ovs-dpctl dump-flows' is no longer suitable for dumping offloaded flows.
194 'ovs-appctl dpctl/dump-flows' should be used instead.
195 - Add new argument '--offload-stats' for command
196 'ovs-appctl bridge/dump-flows',
197 so it can display offloaded packets statistics.
198 - Add L2 GRE tunnel over IPv6 support.
199
200 v2.11.0 - 19 Feb 2019
201 ---------------------
202 - OpenFlow:
203 * OFPMP_TABLE_FEATURES_REQUEST can now modify table features.
204 - ovs-ofctl:
205 * "mod-table" command can now change OpenFlow table names.
206 - ovn:
207 * OVN-SB schema changed: duplicated IP with same Encapsulation type
208 is not allowed any more. Please refer to
209 Documentation/intro/install/ovn-upgrades.rst for the instructions
210 in case there are problems encountered when upgrading from an earlier
211 version.
212 * New support for IPSEC encrypted tunnels between hypervisors.
213 * ovn-ctl: allow passing user:group ids to the OVN daemons.
214 * IPAM/MACAM:
215 - add the capability to dynamically assign just L2 addresses
216 - add the capability to specify a static ip address and get the L2 one
217 allocated dynamically using the following syntax:
218 ovn-nbctl lsp-set-addresses <port> "dynamic <IP>"
219 - DPDK:
220 * Add support for DPDK 18.11
221 * Add support for port representors.
222 - Userspace datapath:
223 * Add option for simple round-robin based Rxq to PMD assignment.
224 It can be set with pmd-rxq-assign.
225 * Add support for Auto load balancing of PMDs (experimental)
226 * Added new per-port configurable option to manage EMC:
227 'other_config:emc-enable'.
228 - Add 'symmetric_l3' hash function.
229 - OVS now honors 'updelay' and 'downdelay' for bonds with LACP configured.
230 - ovs-vswitchd:
231 * New configuration option "offload-rebalance", that enables dynamic
232 rebalancing of offloaded flows.
233 - The environment variable OVS_SYSLOG_METHOD, if set, is now used
234 as the default syslog method.
235 - The environment variable OVS_CTL_TIMEOUT, if set, is now used
236 as the default timeout for control utilities.
237 - The environment variable OVS_RESOLV_CONF, if set, is now used
238 as the DNS server configuration file.
239 - RHEL packaging:
240 * OVN packages are split from OVS packages. A new spec
241 file - ovn-fedora.spec.in is added to generate OVN packages.
242 - Linux datapath:
243 * Support for the kernel versions 4.16.x, 4.17.x, and 4.18.x.
244
245 v2.10.0 - 18 Aug 2018
246 ---------------------
247 - ovs-vswitchd and utilities now support DNS names in OpenFlow and
248 OVSDB remotes.
249 - ovs-vswitchd:
250 * New options --l7 and --l7-len to "ofproto/trace" command.
251 * Previous versions gave OpenFlow tables default names of the form
252 "table#". These are not helpful names for the purpose of accepting
253 and displaying table names, so now tables by default have no names.
254 * The "null" interface type, deprecated since 2013, has been removed.
255 * Add minimum network namespace support for Linux.
256 * New command "lacp/show-stats"
257 - ovs-ofctl:
258 * ovs-ofctl now accepts and display table names in place of numbers. By
259 default it always accepts names and in interactive use it displays them;
260 use --names or --no-names to override. See ovs-ofctl(8) for details.
261 - ovs-vsctl: New commands "add-bond-iface" and "del-bond-iface".
262 - ovs-dpctl:
263 * New commands "ct-set-limits", "ct-del-limits", and "ct-get-limits".
264 - OpenFlow:
265 * OFPT_ROLE_STATUS is now available in OpenFlow 1.3.
266 * OpenFlow 1.5 extensible statistics (OXS) now implemented.
267 * New OpenFlow 1.0 extensions for group support.
268 * Default selection method for select groups is now dp_hash with improved
269 accuracy.
270 - Linux datapath
271 * Add support for compiling OVS with the latest Linux 4.14 kernel.
272 * Added support for meters.
273 * Add support for conntrack zone limit.
274 - ovn:
275 * Implemented icmp4/icmp6/tcp_reset actions in order to drop the packet
276 and reply with a RST for TCP or ICMPv4/ICMPv6 unreachable message for
277 other IPv4/IPv6-based protocols whenever a reject ACL rule is hit.
278 * ACL match conditions can now match on Port_Groups as well as address
279 sets that are automatically generated by Port_Groups. ACLs can be
280 applied directly to Port_Groups as well.
281 * ovn-nbctl can now run as a daemon (long-lived, background process).
282 See ovn-nbctl(8) for details.
283 - DPDK:
284 * New 'check-dpdk' Makefile target to run a new system testsuite.
285 See Testing topic for the details.
286 * Add LSC interrupt support for DPDK physical devices.
287 * Allow init to fail and record DPDK status/version in OVS database.
288 * Add experimental flow hardware offload support
289 * Support both shared and per port mempools for DPDK devices.
290 - Userspace datapath:
291 * Commands ovs-appctl dpif-netdev/pmd-*-show can now work on a single PMD
292 * Detailed PMD performance metrics available with new command
293 ovs-appctl dpif-netdev/pmd-perf-show
294 * Supervision of PMD performance metrics and logging of suspicious
295 iterations
296 * Add signature match cache (SMC) as experimental feature. When turned on,
297 it improves throughput when traffic has many more flows than EMC size.
298 - ERSPAN:
299 * Implemented ERSPAN protocol (draft-foschiano-erspan-00.txt) for
300 both kernel datapath and userspace datapath.
301 * Added port-based and flow-based ERSPAN tunnel port support, added
302 OpenFlow rules matching ERSPAN fields. See ovs-fields(7).
303 - ovs-pki
304 * ovs-pki now generates x.509 version 3 certificate. The new format adds
305 subjectAltName field and sets its value the same as common name (CN).
306
307 v2.9.0 - 19 Feb 2018
308 --------------------
309 - NSH implementation now conforms to latest draft (draft-ietf-sfc-nsh-28).
310 * Add ttl field.
311 * Add a new action dec_nsh_ttl.
312 * Enable NSH support in kernel datapath.
313 - OVSDB has new, experimental support for database clustering:
314 * New high-level documentation in ovsdb(7).
315 * New file format documentation for developers in ovsdb(5).
316 * Protocol documentation moved from ovsdb-server(1) to ovsdb-server(7).
317 * ovsdb-server now supports online schema conversion via
318 "ovsdb-client convert".
319 * ovsdb-server now always hosts a built-in database named _Server. See
320 ovsdb-server(5) for more details.
321 * ovsdb-client: New "get-schema-cksum", "query", "backup", "restore",
322 and "wait" commands. New --timeout option.
323 * ovsdb-tool: New "create-cluster", "join-cluster", "db-cid", "db-sid",
324 "db-local-address", "db-is-clustered", "db-is-standalone", "db-name",
325 "schema-name", "compare-versions", and "check-cluster" commands.
326 * ovsdb-server: New ovs-appctl commands for managing clusters.
327 * ovs-sandbox: New support for clustered databases.
328 - ovs-vsctl and other commands that display data in tables now support a
329 --max-column-width option to limit column width.
330 - No longer slow-path traffic that sends to a controller. Applications,
331 such as OVN ACL logging, want to send a copy of a packet to a
332 controller while leaving the actual packet forwarding in the datapath.
333 - OVN:
334 * The "requested-chassis" option for a logical switch port now accepts a
335 chassis "hostname" in addition to a chassis "name".
336 * IPv6
337 - Added support to send IPv6 Router Advertisement packets in response to
338 the IPv6 Router Solicitation packets from the VIF ports.
339 - Added support to generate Neighbor Solicitation packets using the OVN
340 action 'nd_ns' to resolve unknown next hop MAC addresses for the
341 IPv6 packets.
342 * Add support for QoS bandwidth limit with DPDK.
343 * ovn-ctl: New commands run_nb_ovsdb and run_sb_ovsdb.
344 * ovn-sbctl, ovn-nbctl: New options --leader-only, --no-leader-only.
345 - OpenFlow:
346 * ct_clear action is now backed by kernel datapath. Support is probed for
347 when OVS starts.
348 - Linux kernel 4.13
349 * Add support for compiling OVS with the latest Linux 4.13 kernel
350 - ovs-dpctl and related ovs-appctl commands:
351 * "flush-conntrack" now accept a 5-tuple to delete a specific
352 connection tracking entry.
353 * New "ct-set-maxconns", "ct-get-maxconns", and "ct-get-nconns" commands
354 for userspace datapath.
355 - No longer send packets to the Linux TAP device if it's DOWN unless it is
356 in another networking namespace.
357 - DPDK:
358 * Add support for DPDK v17.11
359 * Add support for vHost IOMMU
360 * New debug appctl command 'netdev-dpdk/get-mempool-info'.
361 * All the netdev-dpdk appctl commands described in ovs-vswitchd man page.
362 * Custom statistics:
363 - DPDK physical ports now return custom set of "dropped", "error" and
364 "management" statistics.
365 - ovs-ofctl dump-ports command now prints new of set custom statistics
366 if available (for OpenFlow 1.4+).
367 * Switch from round-robin allocation of rxq to pmd assignments to a
368 utilization-based allocation.
369 * New appctl command 'dpif-netdev/pmd-rxq-rebalance' to rebalance rxq to
370 pmd assignments.
371 * Add rxq utilization of pmd to appctl 'dpif-netdev/pmd-rxq-show'.
372 * Add support for vHost dequeue zero copy (experimental).
373 - Userspace datapath:
374 * Output packet batching support.
375 - vswitchd:
376 * Datapath IDs may now be specified as 0x1 (etc.) instead of 16 digits.
377 * Configuring a controller, or unconfiguring all controllers, now deletes
378 all groups and meters (as well as all flows).
379 - New --enable-sparse configure option enables "sparse" checking by default.
380 - Added additional information to vhost-user status.
381
382 v2.8.0 - 31 Aug 2017
383 --------------------
384 - ovs-ofctl:
385 * ovs-ofctl can now accept and display port names in place of numbers. By
386 default it always accepts names and in interactive use it displays them;
387 use --names or --no-names to override. See ovs-ofctl(8) for details.
388 * "ovs-ofctl dump-flows" now accepts --no-stats to omit flow statistics.
389 - New ovs-dpctl command "ct-stats-show" to show connection tracking stats.
390 - Tunnels:
391 * Added support to set packet mark for tunnel endpoint using
392 `egress_pkt_mark` OVSDB option.
393 * When using Linux kernel datapath tunnels may be created using rtnetlink.
394 This will allow us to take advantage of new tunnel features without
395 having to make changes to the vport modules.
396 - EMC insertion probability is reduced to 1% and is configurable via
397 the new 'other_config:emc-insert-inv-prob' option.
398 - DPDK:
399 * DPDK log messages redirected to OVS logging subsystem.
400 Log level can be changed in a usual OVS way using
401 'ovs-appctl vlog' commands for 'dpdk' module. Lower bound
402 still can be configured via extra arguments for DPDK EAL.
403 * dpdkvhostuser ports are marked as deprecated. They will be removed
404 in an upcoming release.
405 * Support for DPDK v17.05.1.
406 - IPFIX now provides additional counters:
407 * Total counters since metering process startup.
408 * Per-flow TCP flag counters.
409 * Multicast, broadcast, and unicast counters.
410 - New support for multiple VLANs (802.1ad or "QinQ"), including a new
411 "dot1q-tunnel" port VLAN mode.
412 - In ovn-vsctl and vtep-ctl, record UUIDs in commands may now be
413 abbreviated to 4 hex digits.
414 - Userspace Datapath:
415 * Added NAT support for userspace datapath.
416 * Added FTP and TFTP support with NAT for userspace datapath.
417 * Experimental NSH (Network Service Header) support in userspace datapath.
418 - OVN:
419 * New built-in DNS support.
420 * IPAM for IPv4 can now exclude user-defined addresses from assignment.
421 * IPAM can now assign IPv6 addresses.
422 * Make the DHCPv4 router setting optional.
423 * Gratuitous ARP for NAT addresses on a distributed logical router.
424 * Allow ovn-controller SSL configuration to be obtained from vswitchd
425 database.
426 * ovn-trace now has basic support for tracing distributed firewalls.
427 * In ovn-nbctl and ovn-sbctl, record UUIDs in commands may now be
428 abbreviated to 4 hex digits.
429 * "ovn-sbctl lflow-list" can now print OpenFlow flows that correspond
430 to logical flows.
431 * Now uses OVSDB RBAC support to reduce impact of compromised hypervisors.
432 * Multiple chassis may now be specified for L3 gateways. When more than
433 one chassis is specified, OVN will manage high availability for that
434 gateway.
435 * Add support for ACL logging.
436 * ovn-northd now has native support for active-standby high availability.
437 - Tracing with ofproto/trace now traces through recirculation.
438 - OVSDB:
439 * New support for role-based access control (see ovsdb-server(1)).
440 - New commands 'stp/show' and 'rstp/show' (see ovs-vswitchd(8)).
441 - OpenFlow:
442 * All features required by OpenFlow 1.4 are now implemented, so
443 ovs-vswitchd now enables OpenFlow 1.4 by default (in addition to
444 OpenFlow 1.0 to 1.3).
445 * Increased support for OpenFlow 1.6 (draft).
446 * Bundles now support hashing by just nw_src or nw_dst.
447 * The "learn" action now supports a "limit" option (see ovs-ofctl(8)).
448 * The port status bit OFPPS_LIVE now reflects link aliveness.
449 * OpenFlow 1.5 packet-out is now supported.
450 * Support for OpenFlow 1.5 field packet_type and packet-type-aware
451 pipeline (PTAP).
452 * Added generic encap and decap actions (EXT-382).
453 First supported use case is encap/decap for Ethernet.
454 * Added NSH (Network Service Header) support in userspace
455 Used generic encap and decap actions to implement encapsulation and
456 decapsulation of NSH header.
457 IETF NSH draft - https://datatracker.ietf.org/doc/draft-ietf-sfc-nsh/
458 * Conntrack state is only available to the processing path that
459 follows the "recirc_table" argument of the ct() action. Starting
460 in OVS 2.8, this state is now cleared for the current processing
461 path whenever ct() is called.
462 - Fedora Packaging:
463 * OVN services are no longer restarted automatically after upgrade.
464 * ovs-vswitchd and ovsdb-server run as non-root users by default.
465 - Add --cleanup option to command 'ovs-appctl exit' (see ovs-vswitchd(8)).
466 - L3 tunneling:
467 * Use new tunnel port option "packet_type" to configure L2 vs. L3.
468 * In conjunction with PTAP tunnel ports can handle a mix of L2 and L3
469 payload.
470 * New vxlan tunnel extension "gpe" to support VXLAN-GPE tunnels.
471 * New support for non-Ethernet (L3) payloads in GRE and VXLAN-GPE.
472 - The BFD detection multiplier is now user-configurable.
473 - Add experimental support for hardware offloading
474 * HW offloading is disabled by default.
475 * HW offloading is done through the TC interface.
476 - IPv6 link local addresses are now supported on Linux. Use % to designate
477 the scope device.
478
479 v2.7.0 - 21 Feb 2017
480 ---------------------
481 - Utilities and daemons that support SSL now allow protocols and
482 ciphers to be configured with --ssl-protocols and --ssl-ciphers.
483 - OVN:
484 * QoS is now implemented via egress shaping rather than ingress policing.
485 * DSCP marking is now supported, via the new northbound QoS table.
486 * IPAM now supports fixed MAC addresses.
487 * Support for source IP address based routing.
488 * ovn-trace:
489 - New --ovs option to also print OpenFlow flows.
490 - put_dhcp_opts and put_dhcp_optsv6 actions may now be traced.
491 * Support for managing SSL and remote connection configuration in
492 northbound and southbound databases.
493 * TCP connections to northbound and southbound databases are no
494 longer enabled by default and must be explicitly configured.
495 See documentation for ovn-sbctl/ovn-nbctl "set-connection"
496 command or the ovn-ctl "--db-sb-create-insecure-remote" and
497 "--db-nb-create-insecure-remote" command-line options for
498 information regarding remote connection configuration.
499 * New appctl "inject-pkt" command in ovn-controller that allows
500 packets to be injected into the connected OVS instance.
501 * Distributed logical routers may now be connected directly to
502 logical switches with localnet ports, by specifying a
503 "redirect-chassis" on the distributed gateway port of the
504 logical router. NAT rules may be specified directly on the
505 distributed logical router, and are handled either centrally on
506 the "redirect-chassis", or in many cases are handled locally on
507 the hypervisor where the corresponding logical port resides.
508 Gratuitous ARP for NAT addresses on a distributed logical
509 router is not yet supported, but will be added in a future
510 version.
511 - Fixed regression in table stats maintenance introduced in OVS
512 2.3.0, wherein the number of OpenFlow table hits and misses was
513 not accurate.
514 - OpenFlow:
515 * OFPT_PACKET_OUT messages are now supported in bundles.
516 * A new "selection_method=dp_hash" type for OpenFlow select group
517 bucket selection that uses the datapath computed 5-tuple hash
518 without making datapath flows match the 5-tuple fields, which
519 is useful for more efficient load balancing, for example. This
520 uses the Netronome extension to OpenFlow 1.5+ that allows
521 control over the OpenFlow select groups selection method. See
522 "selection_method" and related options in ovs-ofctl(8) for
523 details.
524 * The "sample" action now supports "ingress" and "egress" options.
525 * The "ct" action now supports the TFTP ALG where support is available.
526 * New actions "clone" and "ct_clear".
527 * The "meter" action is now supported in the userspace datapath.
528 - ovs-ofctl:
529 * 'bundle' command now supports packet-out messages.
530 * New syntax for 'ovs-ofctl packet-out' command, which uses the
531 same string parser as the 'bundle' command. The old 'packet-out'
532 syntax is deprecated and will be removed in a later OVS
533 release.
534 * New unixctl "ofctl/packet-out" command, which can be used to
535 instruct a flow monitor to issue OpenFlow packet-out messages.
536 - ovsdb-server:
537 * Remote connections can now be made read-only (see ovsdb-server(1)).
538 - Tunnels:
539 * TLV mappings for protocols such as Geneve are now segregated on
540 a per-OpenFlow bridge basis rather than globally. (The interface
541 has not changed.)
542 * Removed support for IPsec tunnels.
543 - DPDK:
544 * New option 'n_rxq_desc' and 'n_txq_desc' fields for DPDK interfaces
545 which set the number of rx and tx descriptors to use for the given port.
546 * Support for DPDK v16.11.
547 * Support for rx checksum offload. Refer DPDK HOWTO for details.
548 * Port Hotplug is now supported.
549 * DPDK physical ports can now have arbitrary names. The PCI address of
550 the device must be set using the 'dpdk-devargs' option. Compatibility
551 with the old dpdk<portid> naming scheme is broken, and as such a
552 device will not be available for use until a valid dpdk-devargs is
553 specified.
554 * Virtual DPDK Poll Mode Driver (vdev PMD) support.
555 * Removed experimental tag.
556 - Fedora packaging:
557 * A package upgrade does not automatically restart OVS service.
558 - ovs-vswitchd/ovs-vsctl:
559 * Ports now have a "protected" flag. Protected ports can not forward
560 frames to other protected ports. Unprotected ports can receive and
561 forward frames to protected and other unprotected ports.
562 - ovs-vsctl, ovn-nbctl, ovn-sbctl, vtep-ctl:
563 * Database commands now accept integer ranges, e.g. "set port
564 eth0 trunks=1-10" to enable trunking VLANs 1 to 10.
565
566 v2.6.0 - 27 Sep 2016
567 ---------------------
568 - First supported release of OVN. See ovn-architecture(7) for more
569 details.
570 - ovsdb-server:
571 * New "monitor_cond" "monitor_cond_update" and "update2" extensions to
572 RFC 7047.
573 - OpenFlow:
574 * OpenFlow 1.3+ bundles now expire after 10 seconds since the
575 last time the bundle was either opened, modified, or closed.
576 * OpenFlow 1.3 Extension 230, adding OpenFlow Bundles support, is
577 now implemented.
578 * OpenFlow 1.3+ bundles are now supported for group mods as well as
579 flow mods and port mods. Both 'atomic' and 'ordered' bundle
580 flags are supported for group mods as well as flow mods.
581 * Internal OpenFlow rule representation for load and set-field
582 actions is now much more memory efficient. For a complex flow
583 table this can reduce rule memory consumption by 40%.
584 * Bundles are now much more memory efficient than in OVS 2.5.
585 Together with memory efficiency improvements in OpenFlow rule
586 representation, the peak OVS resident memory use during a
587 bundle commit for large complex set of flow mods can be only
588 25% of that in OVS 2.5 (4x lower).
589 * OpenFlow 1.1+ OFPT_QUEUE_GET_CONFIG_REQUEST now supports OFPP_ANY.
590 * OpenFlow 1.4+ OFPMP_QUEUE_DESC is now supported.
591 * OpenFlow 1.4+ OFPT_TABLE_STATUS is now supported.
592 * New property-based packet-in message format NXT_PACKET_IN2 with support
593 for arbitrary user-provided data and for serializing flow table
594 traversal into a continuation for later resumption.
595 * New extension message NXT_SET_ASYNC_CONFIG2 to allow OpenFlow 1.4-like
596 control over asynchronous messages in earlier versions of OpenFlow.
597 * New OpenFlow extension NXM_NX_MPLS_TTL to provide access to MPLS TTL.
598 * New output option, output(port=N,max_len=M), to allow truncating a
599 packet to size M bytes when outputting to port N.
600 * New command OFPGC_ADD_OR_MOD for OFPT_GROUP_MOD message that adds a
601 new group or modifies an existing groups
602 * The optional OpenFlow packet buffering feature is deprecated in
603 this release, and will be removed in the next OVS release
604 (2.7). After the change OVS always sends the 'buffer_id' as
605 0xffffffff in packet-in messages and will send an error
606 response if any other value of this field is included in
607 packet-out and flow mod sent by a controller. Controllers are
608 already expected to work properly in cases where the switch can
609 not buffer packets, so this change should not affect existing
610 users.
611 * New OpenFlow extension NXT_CT_FLUSH_ZONE to flush conntrack zones.
612 - Improved OpenFlow version compatibility for actions:
613 * New OpenFlow extension to support the "group" action in OpenFlow 1.0.
614 * OpenFlow 1.0 "enqueue" action now properly translated to OpenFlow 1.1+.
615 * OpenFlow 1.1 "mod_nw_ecn" and OpenFlow 1.1+ "mod_nw_ttl" actions now
616 properly translated to OpenFlow 1.0.
617 - ovs-ofctl:
618 * queue-get-config command now allows a queue ID to be specified.
619 * '--bundle' option can now be used with OpenFlow 1.3 and with group mods.
620 * New "bundle" command allows executing a mixture of flow and group mods
621 as a single atomic transaction.
622 * New option "--color" to produce colorized output for some commands.
623 * New option '--may-create' to use OFPGC_ADD_OR_MOD in mod-group command.
624 - IPFIX:
625 * New "sampling_port" option for "sample" action to allow sampling
626 ingress and egress tunnel metadata with IPFIX.
627 * New ovs-ofctl commands "dump-ipfix-bridge" and "dump-ipfix-flow" to
628 dump bridge IPFIX statistics and flow based IPFIX statistics.
629 * New setting other-config:virtual_obs_id to add an arbitrary string
630 to IPFIX records.
631 - Linux:
632 * OVS Linux datapath now implements Conntrack NAT action with all
633 supported Linux kernels.
634 * Support for truncate action.
635 * New QoS type "linux-noop" that prevents Open vSwitch from trying to
636 manage QoS for a given port (useful when other software manages QoS).
637 - DPDK:
638 * New option "n_rxq" for PMD interfaces.
639 Old 'other_config:n-dpdk-rxqs' is no longer supported.
640 Not supported by vHost interfaces. For them number of rx and tx queues
641 is applied from connected virtio device.
642 * New 'other_config:pmd-rxq-affinity' field for PMD interfaces, that
643 allows to pin port's rx queues to desired cores.
644 * New appctl command 'dpif-netdev/pmd-rxq-show' to check the port/rxq
645 assignment.
646 * Type of log messages from PMD threads changed from INFO to DBG.
647 * QoS functionality with sample egress-policer implementation.
648 * The mechanism for configuring DPDK has changed to use database
649 * Sensible defaults have been introduced for many of the required
650 configuration options
651 * DB entries have been added for many of the DPDK EAL command line
652 arguments. Additional arguments can be passed via the dpdk-extra
653 entry.
654 * Add ingress policing functionality.
655 * PMD threads servicing vHost User ports can now come from the NUMA
656 node that device memory is located on if CONFIG_RTE_LIBRTE_VHOST_NUMA
657 is enabled in DPDK.
658 * Basic connection tracking for the userspace datapath (no ALG,
659 fragmentation or NAT support yet)
660 * Support for DPDK 16.07
661 * Optional support for DPDK pdump enabled.
662 * Jumbo frame support
663 * Remove dpdkvhostcuse port type.
664 * OVS client mode for vHost and vHost reconnect (Requires QEMU 2.7)
665 * 'dpdkvhostuserclient' port type.
666 - Increase number of registers to 16.
667 - ovs-benchmark: This utility has been removed due to lack of use and
668 bitrot.
669 - ovs-appctl:
670 * New "vlog/close" command.
671 - ovs-ctl:
672 * Added the ability to selectively start the forwarding and database
673 functions (ovs-vswitchd and ovsdb-server, respectively).
674 - ovsdb-server:
675 * Remove max number of sessions limit, to enable connection scaling
676 testing.
677 - python:
678 * Added support for Python 3.4+ in addition to existing support
679 for 2.7+.
680 - SELinux:
681 * Introduced SELinux policy package.
682 - Datapath Linux kernel compatibility.
683 * Dropped support for kernel older than 3.10.
684 * Removed VLAN splinters feature.
685 * Datapath supports kernel upto 4.7.
686 - Tunnels:
687 * Flow based tunnel match and action can be used for IPv6 address using
688 tun_ipv6_src, tun_ipv6_dst fields.
689 * Added support for IPv6 tunnels, for details checkout FAQ.
690 * Deprecated support for IPsec tunnels ports.
691 - A wrapper script, 'ovs-tcpdump', to easily port-mirror an OVS port and
692 watch with tcpdump
693 - Introduce --no-self-confinement flag that allows daemons to work with
694 sockets outside their run directory.
695 - ovs-pki: Changed message digest algorithm from SHA-1 to SHA-512 because
696 SHA-1 is no longer secure and some operating systems have started to
697 disable it in OpenSSL.
698 - Add 'mtu_request' column to the Interface table. It can be used to
699 configure the MTU of the ports.
700
701 Known issues:
702 - Using openvswitch module in conjunction with upstream Linux tunnels:
703 * When using the openvswitch module distributed with OVS against kernel
704 versions 4.4 to 4.6, the openvswitch module cannot be loaded or used at
705 the same time as "ip_gre".
706 - Conntrack FTP ALGs: When using the openvswitch module distributed with
707 OVS, particular Linux distribution kernels versions may provide diminished
708 functionality. This typically affects active FTP data connections when
709 using "actions=ct(alg=ftp),..." in flow tables. Specifically:
710 * Centos 7.1 kernels (3.10.0-2xx) kernels are unable to correctly set
711 up expectations for FTP data connections in multiple zones,
712 eg "actions=ct(zone=1,alg=ftp),ct(zone=2,alg=ftp),...". Executing the
713 "ct" action for subsequent data connections may fail to determine that
714 the data connection is "related" to an existing connection.
715 * Centos 7.2 kernels (3.10.0-3xx) kernels may not establish FTP ALG state
716 correctly for NATed connections. As a result, flows that perform NAT,
717 eg "actions=ct(nat,ftp=alg,table=1),..." may fail to NAT the packet,
718 and will populate the "ct_state=inv" bit in the flow.
719
720
721 v2.5.0 - 26 Feb 2016
722 ---------------------
723 - Dropped support for Python older than version 2.7. As a consequence,
724 using Open vSwitch 2.5 or later on XenServer 6.5 or earlier (which
725 have Python 2.4) requires first installing Python 2.7.
726 - OpenFlow:
727 * Group chaining (where one OpenFlow group triggers another) is
728 now supported.
729 * OpenFlow 1.4+ "importance" is now considered for flow eviction.
730 * OpenFlow 1.4+ OFPTC_EVICTION is now implemented.
731 * OpenFlow 1.4+ OFPTC_VACANCY_EVENTS is now implemented.
732 * OpenFlow 1.4+ OFPMP_TABLE_DESC is now implemented.
733 * Allow modifying the ICMPv4/ICMPv6 type and code fields.
734 * OpenFlow 1.4+ OFPT_SET_ASYNC_CONFIG and OFPT_GET_ASYNC_CONFIG are
735 now implemented.
736 - ovs-ofctl:
737 * New "out_group" keyword for OpenFlow 1.1+ matching on output group.
738 - Tunnels:
739 * Geneve tunnels can now match and set options and the OAM bit.
740 * The nonstandard GRE64 tunnel extension has been dropped.
741 - Support Multicast Listener Discovery (MLDv1 and MLDv2).
742 - Add 'symmetric_l3l4' and 'symmetric_l3l4+udp' hash functions.
743 - sFlow agent now reports tunnel and MPLS structures.
744 - New 'check-system-userspace', 'check-kmod' and 'check-kernel' Makefile
745 targets to run a new system testsuite. These tests can be run inside
746 a Vagrant box. See INSTALL.md for details
747 - Mark --syslog-target argument as deprecated. It will be removed in
748 the next OVS release.
749 - Added --user option to all daemons
750 - Add support for connection tracking through the new "ct" action
751 and "ct_state"/"ct_zone"/"ct_mark"/"ct_label" match fields. Only
752 available on Linux kernels with the connection tracking module loaded.
753 - Add experimental version of OVN. OVN, the Open Virtual Network, is a
754 system to support virtual network abstraction. OVN complements the
755 existing capabilities of OVS to add native support for virtual network
756 abstractions, such as virtual L2 and L3 overlays and security groups.
757 - RHEL packaging:
758 * DPDK ports may now be created via network scripts (see README.RHEL).
759 - DPDK:
760 * Requires DPDK 2.2
761 * Added multiqueue support to vhost-user
762 * Note: QEMU 2.5+ required for multiqueue support
763
764 v2.4.0 - 20 Aug 2015
765 ---------------------
766 - Flow table modifications are now atomic, meaning that each packet
767 now sees a coherent version of the OpenFlow pipeline. For
768 example, if a controller removes all flows with a single OpenFlow
769 "flow_mod", no packet sees an intermediate version of the OpenFlow
770 pipeline where only some of the flows have been deleted.
771 - Added support for SFQ, FQ_CoDel and CoDel qdiscs.
772 - Add bash command-line completion support for ovs-vsctl Please check
773 utilities/ovs-command-compgen.INSTALL.md for how to use.
774 - The MAC learning feature now includes per-port fairness to mitigate
775 MAC flooding attacks.
776 - New support for a "conjunctive match" OpenFlow extension, which
777 allows constructing OpenFlow matches of the form "field1 in
778 {a,b,c...} AND field2 in {d,e,f...}" and generalizations. For details,
779 see documentation for the "conjunction" action in ovs-ofctl(8).
780 - Add bash command-line completion support for ovs-appctl/ovs-dpctl/
781 ovs-ofctl/ovsdb-tool commands. Please check
782 utilities/ovs-command-compgen.INSTALL.md for how to use.
783 - The "learn" action supports a new flag "delete_learned" that causes
784 the learned flows to be deleted when the flow with the "learn" action
785 is deleted.
786 - Basic support for the Geneve tunneling protocol. It is not yet
787 possible to generate or match options. This is planned for a future
788 release. The protocol is documented at
789 http://tools.ietf.org/html/draft-gross-geneve-00
790 - The OVS database now reports controller rate limiting statistics.
791 - sflow now exports information about LACP-based bonds, port names, and
792 OpenFlow port numbers, as well as datapath performance counters.
793 - ovs-dpctl functionality is now available for datapaths integrated
794 into ovs-vswitchd, via ovs-appctl. Some existing ovs-appctl
795 commands are now redundant and will be removed in a future
796 release. See ovs-vswitchd(8) for details.
797 - OpenFlow:
798 * OpenFlow 1.4 bundles are now supported for flow mods and port
799 mods. For flow mods, both 'atomic' and 'ordered' bundle flags
800 are trivially supported, as all bundled messages are executed
801 in the order they were added and all flow table modifications
802 are now atomic to the datapath. Port mods may not appear in
803 atomic bundles, as port status modifications are not atomic.
804 * IPv6 flow label and neighbor discovery fields are now modifiable.
805 * OpenFlow 1.5 extended registers are now supported.
806 * The OpenFlow 1.5 actset_output field is now supported.
807 * OpenFlow 1.5 Copy-Field action is now supported.
808 * OpenFlow 1.5 masked Set-Field action is now supported.
809 * OpenFlow 1.3+ table features requests are now supported (read-only).
810 * Nicira extension "move" actions may now be included in action sets.
811 * "resubmit" actions may now be included in action sets. The resubmit
812 is executed last, and only if the action set has no "output" or "group"
813 action.
814 * OpenFlow 1.4+ flow "importance" is now maintained in the flow table.
815 * A new Netronome extension to OpenFlow 1.5+ allows control over the
816 fields hashed for OpenFlow select groups. See "selection_method" and
817 related options in ovs-ofctl(8) for details.
818 - ovs-ofctl has a new '--bundle' option that makes the flow mod commands
819 ('add-flow', 'add-flows', 'mod-flows', 'del-flows', and 'replace-flows')
820 use an OpenFlow 1.4 bundle to operate the modifications as a single
821 atomic transaction. If any of the flow mods in a transaction fail, none
822 of them are executed. All flow mods in a bundle appear to datapath
823 lookups simultaneously.
824 - ovs-ofctl 'add-flow' and 'add-flows' commands now accept arbitrary flow
825 mods as an input by allowing the flow specification to start with an
826 explicit 'add', 'modify', 'modify_strict', 'delete', or 'delete_strict'
827 keyword. A missing keyword is treated as 'add', so this is fully
828 backwards compatible. With the new '--bundle' option all the flow mods
829 are executed as a single atomic transaction using an OpenFlow 1.4 bundle.
830 - ovs-pki: Changed message digest algorithm from MD5 to SHA-1 because
831 MD5 is no longer secure and some operating systems have started to disable
832 it in OpenSSL.
833 - ovsdb-server: New OVSDB protocol extension allows inequality tests on
834 "optional scalar" columns. See ovsdb-server(1) for details.
835 - ovs-vsctl now permits immutable columns in a new row to be modified in
836 the same transaction that creates the row.
837 - test-controller has been renamed ovs-testcontroller at request of users
838 who find it useful for testing basic OpenFlow setups. It is still not
839 a necessary or desirable part of most Open vSwitch deployments.
840 - Support for travis-ci.org based continuous integration builds has been
841 added. Build failures are reported to build@openvswitch.org. See INSTALL.md
842 file for additional details.
843 - Support for the Rapid Spanning Tree Protocol (IEEE 802.1D-2004).
844 The implementation has been tested successfully against the Ixia Automated
845 Network Validation Library (ANVL).
846 - Stats are no longer updated on fake bond interface.
847 - Keep active bond interface selection across OVS restart.
848 - A simple wrapper script, 'ovs-docker', to integrate OVS with Docker
849 containers. If and when there is a native integration of Open vSwitch
850 with Docker, the wrapper script will be retired.
851 - Added support for DPDK Tunneling. VXLAN, GRE, and Geneve are supported
852 protocols. This is generic tunneling mechanism for userspace datapath.
853 - Support for multicast snooping (IGMPv1, IGMPv2 and IGMPv3)
854 - Support for Linux kernels up to 4.0.x
855 - The documentation now use the term 'destination' to mean one of syslog,
856 console or file for vlog logging instead of the previously used term
857 'facility'.
858 - Support for VXLAN Group Policy extension
859 - Initial support for the IETF Auto-Attach SPBM draft standard. This
860 contains rudimentary support for the LLDP protocol as needed for
861 Auto-Attach.
862 - The default OpenFlow and OVSDB ports are now the IANA-assigned
863 numbers. OpenFlow is 6653 and OVSDB is 6640.
864 - Support for DPDK vHost.
865 - Support for outer UDP checksums in Geneve and VXLAN.
866 - The kernel vports with dependencies are no longer part of the overall
867 openvswitch.ko but built and loaded automatically as individual kernel
868 modules (vport-*.ko).
869 - Support for STT tunneling.
870 - ovs-sim: New developer tool for simulating multiple OVS instances.
871 See ovs-sim(1) for more information.
872 - Support to configure method (--syslog-method argument) that determines
873 how daemons will talk with syslog.
874 - Support for "ovs-appctl vlog/list-pattern" command that lets to query
875 logging message format for each destination.
876
877
878 v2.3.0 - 14 Aug 2014
879 ---------------------
880 - OpenFlow 1.1, 1.2, and 1.3 are now enabled by default in
881 ovs-vswitchd.
882 - Linux kernel datapath now has an exact match cache optimizing the
883 flow matching process.
884 - Datapath flows now have partially wildcarded tranport port field
885 matches. This reduces userspace upcalls, but increases the
886 number of different masks in the datapath. The kernel datapath
887 exact match cache removes the overhead of matching the incoming
888 packets with the larger number of masks, but when paired with an
889 older kernel module, some workloads may perform worse with the
890 new userspace.
891 - Compatibility with autoconf 2.63 (previously >=2.64)
892
893 v2.2.0 - Internal Release
894 ---------------------
895 - Internal ports are no longer brought up by default, because it
896 should be an administrator task to bring up devices as they are
897 configured properly.
898 - ovs-vsctl now reports when ovs-vswitchd fails to create a new port or
899 bridge.
900 - Port creation and configuration errors are now stored in a new error
901 column of the Interface table and included in 'ovs-vsctl show'.
902 - The "ovsdbmonitor" graphical tool has been removed, because it was
903 poorly maintained and not widely used.
904 - New "check-ryu" Makefile target for running Ryu tests for OpenFlow
905 controllers against Open vSwitch. See INSTALL.md for details.
906 - Added IPFIX support for SCTP flows and templates for ICMPv4/v6 flows.
907 - Upon the receipt of a SIGHUP signal, ovs-vswitchd no longer reopens its
908 log file (it will terminate instead). Please use 'ovs-appctl vlog/reopen'
909 instead.
910 - Support for Linux kernels up to 3.14. From Kernel 3.12 onwards OVS uses
911 tunnel API for GRE and VXLAN.
912 - Added DPDK support.
913 - Added support for custom vlog patterns in Python
914
915
916 v2.1.0 - 19 Mar 2014
917 ---------------------
918 - Address prefix tracking support for flow tables. New columns
919 "prefixes" in OVS-DB table "Flow_Table" controls which packet
920 header fields are used for address prefix tracking. Prefix
921 tracking allows the classifier to skip rules with longer than
922 necessary prefixes, resulting in better wildcarding for datapath
923 flows. Default configuration is to not use any fields for prefix
924 tracking. However, if any flow tables contain both exact matches
925 and masked matches for IP address fields, OVS performance may be
926 increased by using this feature.
927 * As of now, the fields for which prefix lookup can be enabled
928 are: 'tun_id', 'tun_src', 'tun_dst', 'nw_src', 'nw_dst' (or
929 aliases 'ip_src' and 'ip_dst'), 'ipv6_src', and 'ipv6_dst'.
930 (Using this feature for 'tun_id' would only make sense if the
931 tunnel IDs have prefix structure similar to IP addresses.)
932 * There is a maximum number of fields that can be enabled for any
933 one flow table. Currently this limit is 3.
934 * Examples:
935 $ ovs-vsctl set Bridge br0 flow_tables:0=@N1 -- \
936 --id=@N1 create Flow_Table name=table0
937 $ ovs-vsctl set Bridge br0 flow_tables:1=@N1 -- \
938 --id=@N1 create Flow_Table name=table1
939 $ ovs-vsctl set Flow_Table table0 prefixes=ip_dst,ip_src
940 $ ovs-vsctl set Flow_Table table1 prefixes=[]
941 - TCP flags matching: OVS now supports matching of TCP flags. This
942 has an adverse performance impact when using OVS userspace 1.10
943 or older (no megaflows support) together with the new OVS kernel
944 module. It is recommended that the kernel and userspace modules
945 both are upgraded at the same time.
946 - The default OpenFlow and OVSDB ports will change to
947 IANA-assigned numbers in a future release. Consider updating
948 your installations to specify port numbers instead of using the
949 defaults.
950 - OpenFlow:
951 * The OpenFlow 1.1+ "Write-Actions" instruction is now supported.
952 * OVS limits the OpenFlow port numbers it assigns to port 32767 and
953 below, leaving port numbers above that range free for assignment
954 by the controller.
955 * ovs-vswitchd now honors changes to the "ofport_request" column
956 in the Interface table by changing the port's OpenFlow port
957 number.
958 * The Open vSwitch software switch now supports OpenFlow groups.
959 - ovs-vswitchd.conf.db.5 man page will contain graphviz/dot
960 diagram only if graphviz package was installed at the build time.
961 - Support for Linux kernels up to 3.11
962 - ovs-dpctl:
963 The "show" command also displays mega flow mask stats.
964 - ovs-ofctl:
965 * New command "ofp-parse-pcap" to dump OpenFlow from PCAP files.
966 - ovs-controller has been renamed test-controller. It is no longer
967 packaged or installed by default, because too many users assumed
968 incorrectly that ovs-controller was a necessary or desirable part
969 of an Open vSwitch deployment.
970 - Added vlog option to export to a UDP syslog sink.
971 - ovsdb-client:
972 * The "monitor" command can now monitor all tables in a database,
973 instead of being limited to a single table.
974 - The flow-eviction-threshold has been replaced by the flow-limit which is a
975 hard limit on the number of flows in the datapath. It defaults to 200,000
976 flows. OVS automatically adjusts this number depending on network
977 conditions.
978 - Added IPv6 support for active and passive socket communications.
979
980
981 v2.0.0 - 15 Oct 2013
982 ---------------------
983 - The ovs-vswitchd process is no longer single-threaded. Multiple
984 threads are now used to handle flow set up and asynchronous
985 logging.
986 - OpenFlow:
987 * Experimental support for OpenFlow 1.1 (in addition to 1.2 and
988 1.3, which had experimental support in 1.10).
989 * Experimental protocol support for OpenFlow 1.1+ groups. This
990 does not yet include an implementation in the Open vSwitch
991 software switch.
992 * Experimental protocol support for OpenFlow 1.2+ meters. This
993 does not yet include an implementation in the Open vSwitch
994 software switch.
995 * New support for matching outer source and destination IP address
996 of tunneled packets, for tunnel ports configured with the newly
997 added "remote_ip=flow" and "local_ip=flow" options.
998 * Support for matching on metadata 'pkt_mark' for interacting with
999 other system components. On Linux this corresponds to the skb
1000 mark.
1001 * Support matching, rewriting SCTP ports
1002 - The Interface table in the database has a new "ifindex" column to
1003 report the interface's OS-assigned ifindex.
1004 - New "check-oftest" Makefile target for running OFTest against Open
1005 vSwitch. See README-OFTest for details.
1006 - The flow eviction threshold has been moved to the Open_vSwitch table.
1007 - Database names are now mandatory when specifying ovsdb-server options
1008 through database paths (e.g. Private key option with the database name
1009 should look like "--private-key=db:Open_vSwitch,SSL,private_key").
1010 - Added ovs-dev.py, a utility script helpful for Open vSwitch developers.
1011 - Support for Linux kernels up to 3.10
1012 - ovs-ofctl:
1013 * New "ofp-parse" for printing OpenFlow messages read from a file.
1014 * New commands for OpenFlow 1.1+ groups.
1015 - Added configurable flow caching support to IPFIX exporter.
1016 - Dropped support for Linux pre-2.6.32.
1017 - Log file timestamps and ovsdb commit timestamps are now reported
1018 with millisecond resolution. (Previous versions only reported
1019 whole seconds.)
1020
1021
1022 v1.11.0 - 28 Aug 2013
1023 ---------------------
1024 - Support for megaflows, which allows wildcarding in the kernel (and
1025 any dpif implementation that supports wildcards). Depending on
1026 the flow table and switch configuration, flow set up rates are
1027 close to the Linux bridge.
1028 - The "tutorial" directory contains a new tutorial for some advanced
1029 Open vSwitch features.
1030 - Stable bond mode has been removed.
1031 - The autopath action has been removed.
1032 - New support for the data encapsulation format of the LISP tunnel
1033 protocol (RFC 6830). An external control plane or manual flow
1034 setup is required for EID-to-RLOC mapping.
1035 - OpenFlow:
1036 * The "dec_mpls_ttl" and "set_mpls_ttl" actions from OpenFlow
1037 1.1 and later are now implemented.
1038 * New "stack" extension for use in actions, to push and pop from
1039 NXM fields.
1040 * The "load" and "set_field" actions can now modify the "in_port". (This
1041 allows one to enable output to a flow's input port by setting the
1042 in_port to some unused value, such as OFPP_NONE.)
1043 - ovs-dpctl:
1044 * New debugging commands "add-flow", "mod-flow", "del-flow".
1045 * "dump-flows" now has a -m option to increase output verbosity.
1046 - In dpif-based bridges, cache action translations, which can improve
1047 flow set up performance by 80% with a complicated flow table.
1048 - New syslog format, prefixed with "ovs|", to be easier to filter.
1049 - RHEL: Removes the default firewall rule that allowed GRE traffic to
1050 pass through. Any users that relied on this automatic firewall hole
1051 will have to manually configure it. The ovs-ctl(8) manpage documents
1052 the "enable-protocol" command that can be used as an alternative.
1053 - New CFM demand mode which uses data traffic to indicate interface
1054 liveness.
1055
1056 v1.10.0 - 01 May 2013
1057 ---------------------
1058 - Bridge compatibility support has been removed. Any uses that
1059 rely on ovs-brcompatd will have to stick with Open vSwitch 1.9.x
1060 or adapt to native Open vSwitch support (e.g. use ovs-vsctl instead
1061 of brctl).
1062 - The maximum size of the MAC learning table is now configurable.
1063 - With the Linux datapath, packets for new flows are now queued
1064 separately on a per-port basis, so it should no longer be
1065 possible for a large number of new flows arriving on one port to
1066 prevent new flows from being processed on other ports.
1067 - ovs-vsctl:
1068 * Previously ovs-vsctl would retry connecting to the database forever,
1069 causing it to hang if ovsdb-server was not running. Now, ovs-vsctl
1070 only tries once by default (use --retry to try forever). This change
1071 means that you may want to remove uses of --timeout to avoid hangs
1072 in ovs-vsctl calls.
1073 * Many "ovs-vsctl" database commands now accept an --if-exists option.
1074 Please refer to the ovs-vsctl manpage for details.
1075 - OpenFlow:
1076 - Experimental support for newer versions of OpenFlow. See
1077 the "What versions of OpenFlow does Open vSwitch support?"
1078 question in the FAQ for more details.
1079 - The OpenFlow "dp_desc" may now be configured by setting the
1080 value of other-config:dp-desc in the Bridge table.
1081 - It is possible to request the OpenFlow port number with the
1082 "ofport_request" column in the Interface table.
1083 - The NXM flow_removed message now reports the OpenFlow table ID
1084 from which the flow was removed.
1085 - Tunneling:
1086 - New support for the VXLAN tunnel protocol (see the IETF draft here:
1087 http://tools.ietf.org/html/draft-mahalingam-dutt-dcops-vxlan-03).
1088 - Tunneling requires the version of the kernel module paired with
1089 Open vSwitch 1.9.0 or later.
1090 - Inheritance of the Don't Fragment bit in IP tunnels (df_inherit)
1091 is no longer supported.
1092 - Path MTU discovery is no longer supported.
1093 - CAPWAP tunneling support removed.
1094 - Tunnels with multicast destination ports are no longer supported.
1095 - ovs-dpctl:
1096 - The "dump-flows" and "del-flows" no longer require an argument
1097 if only one datapath exists.
1098 - ovs-appctl:
1099 - New "vlog/disable-rate-limit" and "vlog/enable-rate-limit"
1100 commands available allow control over logging rate limits.
1101 - New "dpif/dump-dps", "dpif/show", and "dpif/dump-flows" command
1102 that mimic the equivalent ovs-dpctl commands.
1103 - The ofproto library is now responsible for assigning OpenFlow port
1104 numbers. An ofproto implementation should assign them when
1105 port_construct() is called.
1106 - All dpif-based bridges of a particular type share a common
1107 datapath called "ovs-<type>", e.g. "ovs-system". The ovs-dpctl
1108 commands will now return information on that shared datapath. To
1109 get the equivalent bridge-specific information, use the new
1110 "ovs-appctl dpif/*" commands.
1111 - Backward-incompatible changes:
1112 - Earlier Open vSwitch versions treated ANY as a wildcard in flow
1113 syntax. OpenFlow 1.1 adds a port named ANY, which introduces a
1114 conflict. ANY was rarely used in flow syntax, so we chose to
1115 retire that meaning of ANY in favor of the OpenFlow 1.1 meaning.
1116 - Patch ports no longer require kernel support, so they now work
1117 with FreeBSD and the kernel module built into Linux 3.3 and later.
1118 - New "sample" action.
1119
1120
1121 v1.9.0 - 26 Feb 2013
1122 ------------------------
1123 - Datapath:
1124 - Support for ipv6 set action.
1125 - SKB mark matching and setting.
1126 - support for Linux kernels up to 3.8
1127 - FreeBSD is now a supported platform, thanks to code contributions from
1128 Gaetano Catalli, Ed Maste, and Giuseppe Lettieri.
1129 - ovs-bugtool: New --ovs option to report only OVS related information.
1130 - New %t and %T log escapes to identify the subprogram within a
1131 cooperating group of processes or threads that emitted a log message.
1132 The default log patterns now include this information.
1133 - OpenFlow:
1134 - Allow bitwise masking for SHA and THA fields in ARP, SLL and TLL
1135 fields in IPv6 neighbor discovery messages, and IPv6 flow label.
1136 - Adds support for writing to the metadata field for a flow.
1137 - Tunneling:
1138 - The tunneling code no longer assumes input and output keys are
1139 symmetric. If they are not, PMTUD needs to be disabled for
1140 tunneling to work. Note this only applies to flow-based keys.
1141 - New support for a nonstandard form of GRE that supports a 64-bit key.
1142 - Tunnel Path MTU Discovery default value was set to 'disabled'.
1143 This feature is deprecated and will be removed soon.
1144 - Tunnel header caching removed.
1145 - ovs-ofctl:
1146 - Commands and actions that accept port numbers now also accept keywords
1147 that represent those ports (such as LOCAL, NONE, and ALL). This is
1148 also the recommended way to specify these ports, for compatibility
1149 with OpenFlow 1.1 and later (which use the OpenFlow 1.0 numbers
1150 for these ports for different purposes).
1151 - ovs-dpctl:
1152 - Support requesting the port number with the "port_no" option in
1153 the "add-if" command.
1154 - ovs-pki: The "online PKI" features have been removed, along with
1155 the ovs-pki-cgi program that facilitated it, because of some
1156 alarmist insecurity claims. We do not believe that these claims
1157 are true, but because we do not know of any users for this
1158 feature it seems better on balance to remove it. (The ovs-pki-cgi
1159 program was not included in distribution packaging.)
1160 - ovsdb-server now enforces the immutability of immutable columns. This
1161 was not enforced in earlier versions due to an oversight.
1162 - The following features are now deprecated. They will be removed no
1163 earlier than February 2013. Please email dev@openvswitch.org with
1164 concerns.
1165 - Bridge compatibility.
1166 - Stable bond mode.
1167 - The autopath action.
1168 - Interface type "null".
1169 - Numeric values for reserved ports (see "ovs-ofctl" note above).
1170 - Tunnel Path MTU Discovery.
1171 - CAPWAP tunnel support.
1172 - The data in the RARP packets can now be matched in the same way as the
1173 data in ARP packets.
1174
1175
1176 v1.8.0 - 26 Feb 2013
1177 ------------------------
1178 *** Internal only release ***
1179 - New FAQ. Please send updates and additions!
1180 - Authors of controllers, please read the new section titled "Action
1181 Reproduction" in DESIGN, which describes an Open vSwitch change in
1182 behavior in corner cases that may affect some controllers.
1183 - ovs-l3ping:
1184 - A new test utility that can create L3 tunnel between two Open
1185 vSwitches and detect connectivity issues.
1186 - ovs-ofctl:
1187 - New --sort and --rsort options for "dump-flows" command.
1188 - "mod-port" command can now control all OpenFlow config flags.
1189 - OpenFlow:
1190 - Allow general bitwise masking for IPv4 and IPv6 addresses in
1191 IPv4, IPv6, and ARP packets. (Previously, only CIDR masks
1192 were allowed.)
1193 - Allow support for arbitrary Ethernet masks. (Previously, only
1194 the multicast bit in the destination address could be individually
1195 masked.)
1196 - New field OXM_OF_METADATA, to align with OpenFlow 1.1.
1197 - The OFPST_QUEUE request now reports an error if a specified port or
1198 queue does not exist, or for requests for a specific queue on all
1199 ports, if the specified queue does not exist on any port. (Previous
1200 versions generally reported an empty set of results.)
1201 - New "flow monitor" feature to allow controllers to be notified of
1202 flow table changes as they happen.
1203 - Additional protocols are not mirrored and dropped when forward-bpdu is
1204 false. For a full list, see the ovs-vswitchd.conf.db man page.
1205 - Open vSwitch now sends RARP packets in situations where it previously
1206 sent a custom protocol, making it consistent with behavior of QEMU and
1207 VMware.
1208 - All Open vSwitch programs and log files now show timestamps in UTC,
1209 instead the local timezone, by default.
1210
1211
1212 v1.7.0 - 30 Jul 2012
1213 ------------------------
1214 - kernel modules are renamed. openvswitch_mod.ko is now
1215 openvswitch.ko and brcompat_mod.ko is now brcompat.ko.
1216 - Increased the number of NXM registers to 8.
1217 - Added ability to configure DSCP setting for manager and controller
1218 connections. By default, these connections have a DSCP value of
1219 Internetwork Control (0xc0).
1220 - Added the granular link health statistics, 'cfm_health', to an
1221 interface.
1222 - OpenFlow:
1223 - Added support to mask nd_target for ICMPv6 neighbor discovery flows.
1224 - Added support for OpenFlow 1.3 port description (OFPMP_PORT_DESC)
1225 multipart messages.
1226 - ovs-ofctl:
1227 - Added the "dump-ports-desc" command to retrieve port
1228 information using the new port description multipart messages.
1229 - ovs-test:
1230 - Added support for spawning ovs-test server from the client.
1231 - Now ovs-test is able to automatically create test bridges and ports.
1232 - "ovs-dpctl dump-flows" now prints observed TCP flags in TCP flows.
1233 - Tripled flow setup performance.
1234 - The "coverage/log" command previously available through ovs-appctl
1235 has been replaced by "coverage/show". The new command replies with
1236 coverage counter values, instead of logging them.
1237
1238
1239 v1.6.1 - 25 Jun 2012
1240 ------------------------
1241 - Allow OFPP_CONTROLLER as the in_port for packet-out messages.
1242
1243
1244 v1.6.0 - 24 Feb 2012
1245 ------------------------
1246 *** Internal only release ***
1247 - bonding
1248 - LACP bonds no longer fall back to balance-slb when negotiations fail.
1249 Instead they drop traffic.
1250 - The default bond_mode changed from SLB to active-backup, to protect
1251 unsuspecting users from the significant risks of SLB bonds (which are
1252 documented in vswitchd/INTERNALS).
1253 - Load balancing can be disabled by setting the bond-rebalance-interval
1254 to zero.
1255 - OpenFlow:
1256 - Added support for bitwise matching on TCP and UDP ports.
1257 See ovs-ofctl(8) for more information.
1258 - NXM flow dumps now include times elapsed toward idle and hard
1259 timeouts.
1260 - Added an OpenFlow extension NXT_SET_ASYNC_CONFIG that allows
1261 controllers more precise control over which OpenFlow messages they
1262 receive asynchronously.
1263 - New "fin_timeout" action.
1264 - Added "fin_timeout" support to "learn" action.
1265 - New Nicira action NXAST_CONTROLLER that offers additional features
1266 over output to OFPP_CONTROLLER.
1267 - When QoS settings for an interface do not configure a default queue
1268 (queue 0), Open vSwitch now uses a default configuration for that
1269 queue, instead of dropping all packets as in previous versions.
1270 - Logging:
1271 - Logging to console and file will have UTC timestamp as a default for
1272 all the daemons. An example of the default format is
1273 2012-01-27T16:35:17Z. ovs-appctl can be used to change the default
1274 format as before.
1275 - The syntax of commands and options to set log levels was simplified,
1276 to make it easier to remember.
1277 - New support for limiting the number of flows in an OpenFlow flow
1278 table, with configurable policy for evicting flows upon
1279 overflow. See the Flow_Table table in ovs-vswitch.conf.db(5)
1280 for more information.
1281 - New "enable-async-messages" column in the Controller table. If set to
1282 false, OpenFlow connections to the controller will initially have all
1283 asynchronous messages disabled, overriding normal OpenFlow behavior.
1284 - ofproto-provider interface:
1285 - "struct rule" has a new member "used" that ofproto implementations
1286 should maintain by updating with ofproto_rule_update_used().
1287 - ovsdb-client:
1288 - The new option --timestamp causes the "monitor" command to print
1289 a timestamp with every update.
1290 - CFM module CCM broadcasts can now be tagged with an 802.1p priority.
1291
1292
1293 v1.5.0 - 01 Jun 2012
1294 ------------------------
1295 - OpenFlow:
1296 - Added support for querying, modifying, and deleting flows
1297 based on flow cookie when using NXM.
1298 - Added new NXM_PACKET_IN format.
1299 - Added new NXAST_DEC_TTL action.
1300 - ovs-ofctl:
1301 - Added daemonization support to the monitor and snoop commands.
1302 - ovs-vsctl:
1303 - The "find" command supports new set relational operators
1304 {=}, {!=}, {<}, {>}, {<=}, and {>=}.
1305 - ovsdb-tool now uses the typical database and schema installation
1306 directories as defaults.
1307 - The default MAC learning timeout has been increased from 60 seconds
1308 to 300 seconds. The MAC learning timeout is now configurable.
1309
1310
1311 v1.4.0 - 30 Jan 2012
1312 ------------------------
1313 - Compatible with Open vSwitch kernel module included in Linux 3.3.
1314 - New "VLAN splinters" feature to work around buggy device drivers
1315 in old Linux versions. (This feature is deprecated. When
1316 broken device drivers are no longer in widespread use, we will
1317 delete this feature.) See ovs-vswitchd.conf.db(5) for more
1318 information.
1319 - OpenFlow:
1320 - Added ability to match on IPv6 flow label through NXM.
1321 - Added ability to match on ECN bits in IPv4 and IPv6 through NXM.
1322 - Added ability to match on TTL in IPv4 and IPv6 through NXM.
1323 - Added ability to modify ECN bits in IPv4.
1324 - Added ability to modify TTL in IPv4.
1325 - ovs-vswitchd:
1326 - Don't require the "normal" action to use mirrors. Traffic will
1327 now be properly mirrored for any flows, regardless of their
1328 actions.
1329 - Track packet and byte statistics sent on mirrors.
1330 - The sFlow implementation can now usually infer the correct agent
1331 device instead of having to be told explicitly.
1332 - ovs-appctl:
1333 - New "fdb/flush" command to flush bridge's MAC learning table.
1334 - ovs-test:
1335 - A new distributed testing tool that allows one to diagnose performance
1336 and connectivity issues. This tool currently is not included in RH or
1337 Xen packages.
1338 - RHEL packaging now supports integration with Red Hat network scripts.
1339 - bonding:
1340 - Post 1.4.*, OVS will be changing the default bond mode from balance-slb
1341 to active-backup. SLB bonds carry significant risks with them
1342 (documented vswitchd/INTERNALS) which we want to prevent unsuspecting
1343 users from running into. Users are advised to update any scripts or
1344 configuration which may be negatively impacted by explicitly setting
1345 the bond mode which they want to use.
1346
1347
1348 v1.3.0 - 09 Dec 2011
1349 ------------------------
1350 - OpenFlow:
1351 - Added an OpenFlow extension which allows the "output" action to accept
1352 NXM fields.
1353 - Added an OpenFlow extension for flexible learning.
1354 - Bumped number of NXM registers from four to five.
1355 - ovs-appctl:
1356 - New "version" command to determine version of running daemon.
1357 - If no argument is provided for "cfm/show", displays detailed
1358 information about all interfaces with CFM enabled.
1359 - If no argument is provided for "lacp/show", displays detailed
1360 information about all ports with LACP enabled.
1361 - ovs-dpctl:
1362 - New "set-if" command to modify a datapath port's configuration.
1363 - ovs-vswitchd:
1364 - The software switch now supports 255 OpenFlow tables, instead
1365 of just one. By default, only table 0 is consulted, but the
1366 new NXAST_RESUBMIT_TABLE action can look up in additional
1367 tables. Tables 128 and above are reserved for use by the
1368 switch itself; please use only tables 0 through 127.
1369 - Add support for 802.1D spanning tree (STP).
1370 - Fragment handling extensions:
1371 - New OFPC_FRAG_NX_MATCH fragment handling mode, in which L4
1372 fields are made available for matching in fragments with
1373 offset 0.
1374 - New NXM_NX_IP_FRAG match field for matching IP fragments (usable
1375 via "ip_frag" in ovs-ofctl).
1376 - New ovs-ofctl "get-frags" and "set-frags" commands to get and set
1377 fragment handling policy.
1378 - CAPWAP tunneling now supports an extension to transport a 64-bit key.
1379 By default it remains compatible with the old version and other
1380 standards-based implementations.
1381 - Flow setups are now processed in a round-robin manner across ports
1382 to prevent any single client from monopolizing the CPU and conducting
1383 a denial of service attack.
1384 - Added support for native VLAN tagging. A new "vlan_mode"
1385 parameter can be set for "port". Possible values: "access",
1386 "trunk", "native-tagged" and "native-untagged".
1387 - test-openflowd has been removed. Please use ovs-vswitchd instead.
1388
1389 v1.2.0 - 03 Aug 2011
1390 ------------------------
1391 - New "ofproto" abstraction layer to ease porting to hardware
1392 switching ASICs.
1393 - Packaging for Red Hat Enterprise Linux 5.6 and 6.0.
1394 - Datapath support for Linux kernels up to 3.0.
1395 - OpenFlow:
1396 - New "bundle" and "bundle_load" action extensions.
1397 - Database:
1398 - Implement table unique constraints.
1399 - Support cooperative locking between callers.
1400 - ovs-dpctl:
1401 - New "-s" option for "show" command prints packet and byte
1402 counters for each port.
1403 - ovs-ofctl:
1404 - New "--readd" option for "replace-flows".
1405 - ovs-vsctl:
1406 - New "show" command to print an overview of configuration.
1407 - New "comment" command to add remark that explains intentions.
1408 - ovs-brcompatd has been rewritten to fix long-standing bugs.
1409 - ovs-openflowd has been renamed test-openflowd and moved into the
1410 tests directory. Its presence confused too many users. Please
1411 use ovs-vswitchd instead.
1412 - New ovs-benchmark utility to test flow setup performance.
1413 - A new log level "off" has been added. Configuring a log facility
1414 "off" prevents any messages from being logged to it. Previously,
1415 "emer" was effectively "off" because no messages were ever logged at
1416 level "emer". Now, errors that cause a process to exit are logged
1417 at "emer" level.
1418 - "configure" option --with-l26 has been renamed --with-linux, and
1419 --with-l26-source has been renamed --with-linux-source. The old
1420 names will be removed after the next release, so please update
1421 your scripts.
1422 - The "-2.6" suffix has been dropped from the datapath/linux-2.6 and
1423 datapath/linux-2.6/compat-2.6 directories.
1424 - Feature removals:
1425 - Dropped support for "tun_id_from_cookie" OpenFlow extension.
1426 Please use the extensible match extensions instead.
1427 - Removed the Maintenance_Point and Monitor tables in an effort
1428 to simplify 802.1ag configuration.
1429 - Performance and scalability improvements
1430 - Bug fixes
1431
1432 v1.1.0 - 05 Apr 2011
1433 ------------------------
1434 - Ability to define policies over IPv6
1435 - LACP
1436 - 802.1ag CCM
1437 - Support for extensible match extensions to OpenFlow
1438 - QoS:
1439 - Support for HFSC qdisc.
1440 - Queue used by in-band control can now be configured.
1441 - Kernel:
1442 - Kernel<->userspace interface has been reworked and should be
1443 close to a stable ABI now.
1444 - "Port group" concept has been dropped.
1445 - GRE over IPSEC tunnels
1446 - Bonding:
1447 - New active backup bonding mode.
1448 - New L4 hashing support when LACP is enabled.
1449 - Source MAC hash now includes VLAN field also.
1450 - miimon support.
1451 - Greatly improved handling of large flow tables
1452 - ovs-dpctl:
1453 - "show" command now prints full vport configuration.
1454 - "dump-groups" command removed since kernel support for
1455 port groups was dropped.
1456 - ovs-vsctl:
1457 - New commands for working with the new Managers table.
1458 - "list" command enhanced with new formatting options and --columns
1459 option.
1460 - "get" command now accepts new --id option.
1461 - New "find" command.
1462 - ovs-ofctl:
1463 - New "queue-stats" command for printing queue stats.
1464 - New commands "replace-flows" and "diff-flows".
1465 - Commands to add and remove flows can now read from files.
1466 - New --flow-format option to enable or disable NXM.
1467 - New --more option to increase OpenFlow message verbosity.
1468 - Removed "tun-cookie" command, which is no longer useful.
1469 - ovs-controller enhancements for testing various features.
1470 - New ovs-vlan-test command for testing for Linux kernel driver VLAN
1471 bugs. New ovs-vlan-bug-workaround command for enabling and
1472 disabling a workaround for these driver bugs.
1473 - OpenFlow support:
1474 - "Resubmit" actions now update flow statistics.
1475 - New "register" extension for use in matching and actions, via NXM.
1476 - New "multipath" experimental action extension.
1477 - New support for matching multicast Ethernet frames, via NXM.
1478 - New extension for OpenFlow vendor error codes.
1479 - New extension to set the QoS output queue without actually
1480 sending to an output port.
1481 - Open vSwitch now reports a single flow table, instead of
1482 separate hash and wildcard tables. This better models the
1483 current implementation.
1484 - New experimental "note" action.
1485 - New "ofproto/trace" ovs-appctl command and associated utilities
1486 to ease debugging complex flow tables.
1487 - Database:
1488 - Schema documentation now includes an entity-relationship diagram.
1489 - The database is now garbage collected. In most tables,
1490 unreferenced rows will be deleted automatically.
1491 - Many tables now include statistics updated periodically by
1492 ovs-vswitchd or ovsdb-server.
1493 - Every table now has an "external-ids" column for use by OVS
1494 integrators.
1495 - There is no default controller anymore. Each bridge must have its
1496 controller individually specified.
1497 - The "fail-mode" is now a property of a Bridge instead of a Controller.
1498 - New versioning and checksum features.
1499 - New Managers table and manager_options column in Open_vSwitch table
1500 for specifying managers. The old "managers" column in the
1501 Open_vSwitch table has been removed.
1502 - Many "name" columns are now immutable.
1503 - Feature removals:
1504 - Dropped support for XenServer pre-5.6.100.
1505 - Dropped support for Linux pre-2.6.18.
1506 - Dropped controller discovery support.
1507 - Dropped "ovs-ofctl status" and the OpenFlow extension that it used.
1508 Statistics reporting in the database is a rough equivalent.
1509 - Dropped the "corekeeper" package (now separate, at
1510 http://openvswitch.org/cgi-bin/gitweb.cgi?p=corekeeper).
1511 - Performance and scalability improvements
1512 - Bug fixes
1513
1514 v1.1.0pre2 - 13 Sep 2010
1515 ------------------------
1516 - Bug fixes
1517
1518 v1.1.0pre1 - 31 Aug 2010
1519 ------------------------
1520 - OpenFlow 1.0 slicing (QoS) functionality
1521 - Python bindings for configuration database (no write support)
1522 - Performance and scalability improvements
1523 - Bug fixes
1524
1525 v1.0.1 - 31 May 2010
1526 --------------------
1527 - New "patch" interface type
1528 - Bug fixes
1529
1530 v1.0.0 - 15 May 2010
1531 --------------------
1532 - Configuration database with remote management
1533 - OpenFlow 1.0
1534 - GRE tunneling
1535 - Support for XenServer 5.5 and 5.6
1536 - Performance and scalability improvements
1537 - Bug fixes
1538
1539 v0.99.2 - 18 Feb 2010
1540 ---------------------
1541 - Bug fixes
1542
1543 v0.99.1 - 25 Jan 2010
1544 ---------------------
1545 - Add support for sFlow(R)
1546 - Make headers compatible with C++
1547 - Bug fixes
1548
1549 v0.99.0 - 14 Jan 2010
1550 ---------------------
1551 - User-space forwarding engine
1552 - Bug fixes
1553
1554 v0.90.7 - 29 Nov 2009
1555 ---------------------
1556 - Add support for NetFlow active timeouts
1557 - Bug fixes
1558
1559 v0.90.6 - 6 Oct 2009
1560 --------------------
1561 - Bug fixes
1562
1563 v0.90.5 - 21 Sep 2009
1564 ---------------------
1565 - Generalize in-band control to more diverse network setups
1566 - Bug fixes