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The hardware VTEP OVSDB schema specifies relations that a VTEP can use
to integrate physical ports into logical switches maintained by a
network virtualization controller such as NVP.
Co-authored-by: Ben Pfaff <blp@nicira.com>
Co-authored-by: Kenneth Duda <kduda@aristanetworks.com>
Co-authored-by: Justin Pettit <jpettit@nicira.com>
Signed-off-by: Bruce Davie <bdavie@vmware.com>
Signed-off-by: Ben Pfaff <blp@nicira.com>
Signed-off-by: Kenneth Duda <kduda@aristanetworks.com>
Signed-off-by: Justin Pettit <jpettit@nicira.com>
Acked-by: Ben Pfaff <blp@nicira.com>
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It is needed for the classifier partitioning optimization. This commit
only reintroduces the parts that are actually needed.
Signed-off-by: Ben Pfaff <blp@nicira.com>
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We already had queues that were suitable for replacement by this data
structure, and I intend to add another one later on.
flow_miss_batch_ofproto_destroyed() did not work well with the guarded-list
structure (it required either adding a lot more functions or breaking the
abstraction) so I changed the caller to just use udpif_revalidate().
Checking reval_seq at the end of handle_miss_upcalls() also didn't work
well with the abstraction, so I decided that since this was a corner case
anyway it would be acceptable to just drop those in flow_miss_batch_next().
Signed-off-by: Ben Pfaff <blp@nicira.com>
Acked-by: Ethan Jackson <ethan@nicira.com>
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With this implementation I get warnings with Clang on GNU/Linux when the
previous patch is not applied. This ought to make it easier to avoid
introducing new problems in the future even without building on FreeBSD.
Signed-off-by: Ben Pfaff <blp@nicira.com>
Acked-by: Jarno Rajahalme <jrajahalme@nicira.com>
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This implementation was derived from FreeBSD:
http://svnweb.freebsd.org/base/head/sys/libkern/crc32.c
Reviewed-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Joe Stringer <joe@wand.net.nz>
Signed-off-by: Ben Pfaff <blp@nicira.com>
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Signed-off-by: Ben Pfaff <blp@nicira.com>
Acked-by: Andy Zhou <azhou@nicira.com>
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Until now, the async append interface has required async_append_enable()
to be called while the process was still single-threaded, with the
rationale being that async_append_enable() could race with
async_append_write() on some existing async_append object. This was a
difficult problem when the async append interface was introduced, because
at the time Open vSwitch did not have any infrastructure for inter-thread
synchronization.
Now it is easy to solve, by introducing synchronization into the
async append module. However, that's more or less wasted, because the
client is already required to serialize access to async append objects.
Moreover, vlog, the only existing client, needs to serialize access for
other reasons, so it wouldn't even be possible to just drop the client's
synchronization.
This commit therefore takes another approach. It drops the
async_append_enable() interface entirely. Now any existing async_append
object is always enabled. The responsibility for "enabling", then, now
rests in whether the client creates and uses an async_append object, and
so vlog now takes care of that by itself. Also, since vlog now has to
deal with sometimes having an async_append and sometimes not having one,
we might as well allow creating an async_append to fail, thereby slightly
simplifying the "no async I/O" implementation from "write synchronously"
to "always fail creating an async_append".
Reported-by: Shih-Hao Li <shihli@nicira.com>
Signed-off-by: Ben Pfaff <blp@nicira.com>
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This patch retires a venerable library whose inception dates before
the first patch of the current repository: tags. They have served us
well, but their time has come for the reasons listed below.
1) They don't actually help much.
In theory, tags had been used to reduce revalidation necessary when
using bonds, mac-learning, and frequently changing flow tables. With
bonds and mac-learning, things change happen so rarely that tagging
isn't worth it. That leaves flow table changes. With the complex flow
tables in my testing, the revalidate_set gets so overwhelmed with
tags, that we end up revalidating every facet every time through the
run loop. In other words, they tags are giving us no benefit.
2) They complicate the code.
This patch simplifies the code and removes a couple of rather ugly
kludges.
3) They complicated locking once threading hits.
Because of the calculate_flow_tag() function, the table_dpif structure
would require locking in a multi-threaded OVS. Though this problem
isn't insurmountable, it's annoying and probably would cause lock
contention.
Of course, we could try to work around these problems with a more
advanced tagging infrastructure, but this moves in the opposite of the
direction we should be. Ideally we'll have a more-or-less stateless
ofproto-dpif supporting a massive number of datapath flows. Tags (or
facets for that matter) aren't going to work in this new world.
Signed-off-by: Ethan Jackson <ethan@nicira.com>
Acked-by: Ben Pfaff <blp@nicira.com>
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This will be hooked into the vlog library in an upcoming commit.
Signed-off-by: Ben Pfaff <blp@nicira.com>
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Signed-off-by: Ben Pfaff <blp@nicira.com>
Acked-by: Ed Maste <emaste@freebsd.org>
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The "stress" library was introduced years ago. We intended at the time to
start using it to provoke errors in testing, to make sure that Open vSwitch
was resilient against those errors. The intention was good, but there were
few actual implementations of stress options, and the testing never
materialized.
Rather than adapt the stress library for thread safety, this seems like a
good opportunity to remove it, so this commit does so.
Signed-off-by: Ben Pfaff <blp@nicira.com>
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It had no remaining users.
Signed-off-by: Ben Pfaff <blp@nicira.com>
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This library should prove useful for the threading changes coming up.
The following commit introduces one (very simple) user.
Signed-off-by: Ben Pfaff <blp@nicira.com>
Acked-by: Ethan Jackson <ethan@nicira.com>
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The only tricky part here is that I'm throwing in annotations to allow
"sparse" to report unbalanced locking.
Signed-off-by: Ben Pfaff <blp@nicira.com>
Acked-by: Ethan Jackson <ethan@nicira.com>
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OpenFlow 1.2 standardized experimenter error codes in a way different from
the Nicira extension. This commit implements the OpenFlow 1.2+ version.
This commit also makes it easy to add error codes for new experimenter IDs
by adding new *_VENDOR_ID definitions to openflow-common.h.
Signed-off-by: Ben Pfaff <blp@nicira.com>
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Signed-off-by: Ben Pfaff <blp@nicira.com>
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The underlying glibc interface is deprecated because the interface itself
is not thread-safe. That means that there's no way for a layer on top of
it to be thread-safe.
Signed-off-by: Ben Pfaff <blp@nicira.com>
Acked-by: Ethan Jackson <ethan@nicira.com>
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This moves generic action execution code out of lib/dpif-netedev.c
and into a new file, lib/odp-execute.c.
This is in preparation for using odp_execute_actions()
in lib/odp-util.c to handle recirculation/
Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Ben Pfaff <blp@nicira.com>
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Traditionally, Open vSwitch has used a variant of 802.1ag "CFM" for
interface liveness detection. This has served us well until now,
but has several serious drawbacks which have steadily become more
inconvenient. First, the 802.1ag standard does not implement
several useful features forcing us to (optionally) break
compatibility. Second, 802.1.ag is not particularly popular
outside of carrier grade networking equipment. Third, 802.1ag is
simply quite awkward.
In an effort to solve the aforementioned problems, this patch
implements BFD which is ubiquitous, well designed, straight
forward, and implements required features in a standard way. The
initial cut of the protocol focuses on getting the basics of the
specification correct, leaving performance optimizations, and
advanced features as future work. The protocol should be
considered experimental pending future testing.
Signed-off-by: Ethan Jackson <ethan@nicira.com>
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lib/pcap.h has a name that conflicts with /usr/include/pcap.h. When one
wants to include pcap.h from libpcap (i.e.: the one from /usr/include), one
may end up with pcap.h from openvswitch.
This change renames this header to pcap-file.h and updates all
references to this file.
This change was tested with `make distcheck`.
Signed-off-by: Stephane A. Sezer <sas@cd80.net>
Signed-off-by: Ben Pfaff <blp@nicira.com>
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The autopath action was attempting to achieve functionality similar
to the bundle action, but was significantly clunkier, more
difficult to understand, more difficult to use, and less reliable.
This patch removes it.
Signed-off-by: Ethan Jackson <ethan@nicira.com>
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This patch removes the final bit of linux specific code which
prevents building netdev-vport everywhere. With this, other
platforms automatically get access to patch ports, and (if their
datapath supports it), flow based tunneling.
Signed-off-by: Ethan Jackson <ethan@nicira.com>
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murmurhash is faster than Jenkins and slightly higher quality, so switch to
it for hashing words.
The best timings I got for hashing for data lengths of the following
numbers of 32-bit words, in seconds per 1,000,000,000 hashes, were:
words murmurhash Jenkins hash
----- ---------- ------------
1 8.4 10.4
2 10.3 10.3
3 11.2 10.7
4 12.6 18.0
5 13.9 18.3
6 15.2 18.7
In other words, murmurhash outperforms Jenkins for all input lengths other
than exactly 3 32-bit words (12 bytes). (It's understandable that Jenkins
would have a best case at 12 bytes, because Jenkins works in 12-byte
chunks.) Even in the case where Jenkins is faster, it's only by 5%. On
average within this data set, murmurhash is 15% faster, and for 4-word
input it is 30% faster.
We retain Jenkins for flow_hash_symmetric_l4() and flow_hash_fields(),
which are cases where the hash value is exposed externally.
This commit appears to improve "ovs-benchmark rate" results slightly by
a few hundred connections per second (under 1%), when used with an NVP
controller.
Signed-off-by: Ben Pfaff <blp@nicira.com>
Acked-by: Ethan Jackson <ethan@nicira.com>
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Signed-off-by: Simon Horman <horms@verge.net.au>
[blp@nicira.com renamed some functions and options and revised
the documentation]
Signed-off-by: Ben Pfaff <blp@nicira.com>
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The ESX userspace looks quite a bit like linux, but has some key
differences which need to be specially handled in the build. To
distinguish between ESX and systems which use the linux datapath
module, this patch adds two new macros "ESX" and "LINUX_DATAPATH".
It uses these macros to disable building code on ESX which only
applies to a true Linux environment. In addition, it adds a new
route-table-stub implementation which is required for the build to
complete successfully on ESX.
Signed-off-by: Ethan Jackson <ethan@nicira.com>
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Before commit e3a880272 (lib: Specify idl location more precisely.), the
files named in VSWITCH_IDL_FILES were relative to the source directory.
That commit made them inconsistent: one remained relative to the source
directory, the other became relative to the build directory. This meant
that if the source and build directories differed, the ovsdb-idlc
invocation had no change of succeeding.
This commit fixes the problem by making the file names consistently
relative to the build directory and then adjusting the ovsdb-idlc
invocation to expect that.
Signed-off-by: Ben Pfaff <blp@nicira.com>
Acked-by: Ethan Jackson <ethan@nicira.com>
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For some reason, the ESX build tools seem to be confused about the
location of 'lib'. This patch specifies it more directly.
Signed-off-by: Ethan Jackson <ethan@nicira.com>
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Signed-off-by: Ben Pfaff <blp@nicira.com>
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The default is unchanged, /etc/openvswitch/conf.db.
This makes it possible to transition each Open vSwitch packaging from
/etc/openvswitch/conf.db to /var/lib/openvswitch/conf.db independently.
Signed-off-by: Ben Pfaff <blp@nicira.com>
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OpenFlow headers are not as uniform as they could be, with size, alignment,
and numbering changes from one version to another and across varieties
(e.g. ordinary messages vs. "stats" messages). Until now the Open vSwitch
internal APIs haven't done a good job of abstracting those differences in
header formats. This commit changes that; from this commit forward very
little code actually needs to understand the header format or numbering.
Instead, it can just encode or decode, or pull or put, the header using
a more abstract API using the ofpraw_, ofptype_, and other APIs in the
new ofp-msgs module.
Signed-off-by: Ben Pfaff <blp@nicira.com>
Tested-by: Simon Horman <horms@verge.net.au>
Reviewed-by: Simon Horman <horms@verge.net.au>
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This patch adds new netdev classes that implement
"system" and "tap" devices on FreeBSD using the
libpcap library. This enables the use of the
"netdev" datapath_type of Open vSwitch on FreeBSD.
Signed-off-by: Gaetano Catalli <gaetano.catalli@gmail.com>
Signed-off-by: Ed Maste <emaste@adaranet.com>
Signed-off-by: Giuseppe Lettieri <g.lettieri@iet.unipi.it>
Signed-off-by: Ben Pfaff <blp@nicira.com>
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ovs-vswitchd is effectively a "soft real-time" process, because flows that
do not get set up quickly lead to packet loss or retransmission. We've
done our best to keep it from blocking unnecessarily, but some operations
unavoidably block. This new library allows a daemon to break itself up
into a main process and a worker process, connected by an RPC channel,
with the idea being that the main process will delegate any possibly
blocking operations to the worker.
This commit also modifies ovs-vswitchd to start a worker process, but it
does not actually introduce any uses for the worker process. Upcoming
commits will add those.
Signed-off-by: Ben Pfaff <blp@nicira.com>
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Suggested-by: Justin Pettit <jpettit@nicira.com>
Signed-off-by: Ben Pfaff <blp@nicira.com>
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OpenFlow actions have always been somewhat awkward to handle.
Moreover, over time we've started creating actions that require more
complicated parsing. When we maintain those actions internally in
their wire format, we end up parsing them multiple times, whenever
we have to look at the set of actions.
When we add support for OpenFlow 1.1 or later protocols, the situation
will get worse, because these newer protocols support many of the same
actions but with different representations. It becomes unrealistic to
handle each protocol in its wire format.
This commit adopts a new strategy, by converting OpenFlow actions into
an internal form from the wire format when they are read, and converting
them back to the wire format when flows are dumped. I believe that this
will be more maintainable over time.
Thanks to Simon Horman and Pravin Shelar for reviews.
Signed-off-by: Ben Pfaff <blp@nicira.com>
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This is a trivial implementation of the route-table functionality for
FreeBSD, as needed by ofproto/ofproto-dpif-sflow.c. It has not yet
been extensively tested.
Signed-off-by: Ed Maste <emaste@freebsd.org>
Signed-off-by: Ben Pfaff <blp@nicira.com>
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This commit converts two rate-limiters in the tree to use the library.
I intend to use the library elsewhere in the future.
Signed-off-by: Ben Pfaff <blp@nicira.com>
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A smap is a string to string hash map. It has a cleaner interface
than shash's which were traditionally used for the same purpose.
This patch implements the data structure, and changes netdev and
its providers to use it.
Signed-off-by: Ethan Jackson <ethan@nicira.com>
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Signed-off-by: Ben Pfaff <blp@nicira.com>
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This commit adapts a couple of existing pieces of code to use the
new data structure. The following commit will add another user
(which is also the first use of the simap_increas() function).
Signed-off-by: Ben Pfaff <blp@nicira.com>
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An upcoming commit will break the ovs.vlog module into an ovs.vlog package
with submodules. This commit makes switching between trees with the old
structure and those with the new structure much easier.
This commit works by setting PYTHONDONTWRITEBYTECODE=yes in Python
invocations from the build system and testing. This keeps Python 2.6+ from
creating .pyc and .pyo files. Creating .py[co] works OK for any given
version of Open vSwitch, but it causes trouble if you switch from a version
with foo/__init__.py into an (older) version with plain foo.py, since
foo/__init__.pyc will cause Python to ignore foo.py.
Signed-off-by: Ben Pfaff <blp@nicira.com>
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Replaced all instances of Nicira Networks(, Inc) to Nicira, Inc.
Feature #10593
Signed-off-by: Raju Subramanian <rsubramanian@nicira.com>
Signed-off-by: Ben Pfaff <blp@nicira.com>
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I've had a few complaints that ovs-vswitchd logs its coverage counters
at WARN level, but this is mainly wrong: ovs-vswitchd only logs coverage
counters at WARN level when the "coverage/log" command is used through
ovs-appctl. This was even documented.
The reason to log at such a high level was to make it fairly certain that
these messages specifically requested by the admin would not be filtered
out before making it to the log. But it's even better if the admin just
gets the coverage counters as a reply to the ovs-appctl command. So that
is what this commit does.
This commit also improves the documentation of the ovs-appctl command.
Signed-off-by: Ben Pfaff <blp@nicira.com>
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This patch fixes a build error when OVS is built inside
"./_debian" directory.
To reproduce this issue run "fakeroot debian/rules binary"
or "debuild binary" inside the git root directory.
Signed-off-by: Ansis Atteka <aatteka@nicira.com>
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This is cleaner then having multiple programs build the idl
independently.
Signed-off-by: Ethan Jackson <ethan@nicira.com>
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Signed-off-by: Ben Pfaff <blp@nicira.com>
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This commit switches from using the actual protocol values of error codes
internally in Open vSwitch, to using abstract values that are translated to
and from protocol values at message parsing and serialization time. I
believe that this makes the code easier to read and to write.
This is also one step along the way toward OpenFlow 1.1 support because
OpenFlow 1.1 renumbered a bunch of error codes.
Signed-off-by: Ben Pfaff <blp@nicira.com>
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An upcoming commit will introduce code outside of ofproto/netflow.c that
works with NetFlow packets, so we need the protocol definitions in a common
location.
Signed-off-by: Ben Pfaff <blp@nicira.com>
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This is less redundant.
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The version of groff on RHEL 5 doesn't include the .SY, .OP, or .YS macros
that ovs-benchmark.1 uses, so the manpage-check target fails on that
platform. This commit adds the groff definitions of those macros to a
file and includes it into ovs-benchmark.1.
I tested that this allows RHEL 5 to pass manpage-check.
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