util: New function set_program_name_version().

With this function, users of the Open vSwitch libraries which
should not have the same version as Open vSwitch will have their
version displayed in unixctl and at the command line.

Signed-off-by: Ethan Jackson <ethan@nicira.com>
datapath: Do not send notification if ovs_vport_set_options() failed

There is no need to send a notification if ovs_vport_set_options() failed
and ovs_vport_cmd_set() did not change anything.

Issue#10285

Signed-off-by: Ansis Atteka <aatteka@nicira.com>
vswitchd: Remove port from datapath if it becomes non-operational

If kernel module rejects config changes then vswitchd sets the ofport
column to -1, but does not remove the non-operational port from the
datapath. This patch fixes this problem.

ovs-vsctl add-br ovsbr
ovs-vsctl add-port ovsbr p1
ovs-vsctl add-port ovsbr p2
ovs-vsctl set Interface p1 options:remote_ip=2.1.1.1 options:key=123 type=gre
ovs-vsctl set Interface p2 options:remote_ip=1.1.1.1 options:key=123 type=gre
ovs-vsctl set Interface p2 options:remote_ip=2.1.1.1 options:key=123 type=gre
ovs-dpctl show #observe that p2 does not appear here anymore

Signed-off-by: Ansis Atteka <aatteka@nicira.com>
Python binaries to write comment in db show-log while updating database

This is an improvement in python script ovs-xapi-sync to call add_comment()
method while updating database. This will help developer to debug binaries
and database from ovsdb-tool show-log command output and understand which
python binary is updating db.

Feature #10543
Signed-off-by: Arun Sharma <arun.sharma@calsoftinc.com>
Signed-off-by: Ben Pfaff <blp@nicira.com>
ovs-monitor-ipsec: Use same pattern as ovs-xapi-sync.

This does not fix an actual bug in ovs-monitor-ipsec because it does not
ever commit any changes to the database.

Signed-off-by: Ben Pfaff <blp@nicira.com>
ovsdb-idl: Simplify transaction retry.

Originally the IDL transaction state machine had a return value
TXN_TRY_AGAIN to signal the client to wait for a change in the database and
then retry its transaction.  However, this logic was incomplete, because
it was possible for the database to change before the reply to the
transaction RPC was received, in which case the client would wait for a
further change.  Commit 4fdfe5ccf84c (ovsdb-idl: Prevent occasional hang
when multiple database clients race.) fixed the problem by breaking
TXN_TRY_AGAIN into two status codes, TXN_AGAIN_WAIT that meant to wait for
a further change and TXN_AGAIN_NOW that meant that a change had already
occurred so try again immediately.

This is correct enough, but it is more complicated than necessary.  It is
simpler and just as correct to use a single "try again" status that
requires the client to wait for a change relative to the database contents
*before* the transaction was committed.  This commit makes that change.
It also changes ovsdb_idl_run()'s return type from bool to void because
its return type is hardly useful anymore.

Signed-off-by: Ben Pfaff <blp@nicira.com>
ovsdb-idl: Improve ovsdb_idl_txn_increment() interface.

The previous interface was just bizarre.

Signed-off-by: Ben Pfaff <blp@nicira.com>
ovsdb-idl: Improve documentation.

Signed-off-by: Ben Pfaff <blp@nicira.com>
bridge: Rate limit default address warnings.

This information is typically not more useful if displayed more
often.

Signed-off-by: Ethan Jackson <ethan@nicira.com>
bridge: Rate limit port creations and deletions.

In some datapaths, adding or deleting OpenFlow ports can take quite
a bit of time.  If there are lots of OpenFlow ports which needed to
be added in a run loop, this can cause Open vSwitch to lock up and
stop setting up flows while trying to catch up.  This patch lessons
the severity of the problem by only doing a few OpenFlow port adds
or deletions per run loop allowing other work to be done in
between.

Bug #10672.
Signed-off-by: Ethan Jackson <ethan@nicira.com>
util: New function bitwise_one().

It's the obvious counterpart to bitwise_zero().

Signed-off-by: Ben Pfaff <blp@nicira.com>
util: New function bitwise_is_all_zeros().

Signed-off-by: Ben Pfaff <blp@nicira.com>
meta-flow: New functions for reading and writing generalized subfields.

The existing functions for reading and writing the values of subfields only
handle subfields up to 64 bits wide.  These new functions handle subfields
of any width.

Also update some existing comments.

Signed-off-by: Ben Pfaff <blp@nicira.com>
learn: Fix bugs when learn actions use subfields wider than 64 bits.

Bug #10576.
Reported-by: James Schmidt <jschmidt@nicira.com>
Signed-off-by: Ben Pfaff <blp@nicira.com>
learn: Make it possible to parse "load" actions wider than 64 bits.

The implementation of the "learn" action now properly implements
specifications such as 0x20010db885a308d313198a2e03707348->NXM_NX_IPV6_DST
but the parser used in ovs-ofctl and elsewhere could not generate such
specifications.  This commit adds that support.

Signed-off-by: Ben Pfaff <blp@nicira.com>
python: Honor zero probe interval in reconnect.py

The python reconnect library attempted to send a probe every 0
milliseconds instead of disabling probing when the probe_interval
was zero.

Signed-off-by: Ethan Jackson <ethan@nicira.com>
stream: By default disable probing on unix sockets.

There isn't a lot of value in sending inactivity probes on unix
sockets.  This patch changes the default to disable them.

Signed-off-by: Ethan Jackson <ethan@nicira.com>
ovs-save: Add "dev" keyword before interface names in the ip commands

The "service force-reload-kmod" command did not work properly, if there
was a bridge, which name was a prefix of string "broadcast" (e.g. "br").

To reproduce:
ovs-vsctl add-br br
service openvswitch-switch force-reload-kmod

This patch will make sure that the generated ip commands are clearly
interpretable by the ip utility.

Issue #9841
Signed-off-by: Ansis Atteka <aatteka@nicira.com>
documentation: Add INSTALL.Libvirt file

Add documentation on how to use OVS integration
with the upcoming Libvirt 0.9.11 release.

Signed-off-by: Ansis Atteka <aatteka@nicira.com>
socket-util: Close socket on failed dscp modification.

If socket-util failed to modify the dscp bits of an active
connection, it would fail to close the file descriptor potentially
causing a leak. Found by inspection.

Signed-off-by: Ethan Jackson <ethan@nicira.com>