sliver-openvswitch.git
13 years agowdp-xflow: Remove wx structure from global list when closing. wdp
Ben Pfaff [Thu, 3 Mar 2011 17:54:33 +0000 (09:54 -0800)]
wdp-xflow: Remove wx structure from global list when closing.

Fixes a use-after-free error in wx_run().

Reported-by: Hao Zheng <hzheng@nicira.com>
13 years agovswitchd: Use wdp instead of xfif interface from bridge code.
Ben Pfaff [Sun, 6 Feb 2011 04:58:12 +0000 (20:58 -0800)]
vswitchd: Use wdp instead of xfif interface from bridge code.

Part of the point of the wdp branch is to use the high-level wdp interface
where it makes sense.  But until now this hasn't been extended to the
bridge code.  This commit fixes that.

There are still some references to xflow inside this file that need to be
looked at.

13 years agowdp-xflow: Always report an up-to-date port list in wx_port_list().
Ben Pfaff [Thu, 3 Feb 2011 00:28:51 +0000 (16:28 -0800)]
wdp-xflow: Always report an up-to-date port list in wx_port_list().

Until now wx_port_list() has reported the cached list of ports kept in
wx->ports.  This won't work, however, in a followup patch when bridge.c
switches from using an xfif to using a wdp, because the bridge
reconfiguration code expects to add and delete ports and have the list
of ports returned by wx_port_list() updated immediately.

13 years agovswitchd: Use wdp functions instead of xfif ones for enumerating bridges.
Ben Pfaff [Thu, 27 Jan 2011 18:06:20 +0000 (10:06 -0800)]
vswitchd: Use wdp functions instead of xfif ones for enumerating bridges.

13 years agoofp-util: Use our usual variable naming convention in make_ofp_error_msg().
Ben Pfaff [Thu, 4 Nov 2010 17:33:28 +0000 (10:33 -0700)]
ofp-util: Use our usual variable naming convention in make_ofp_error_msg().

13 years agoofp-util: Actually map vendor codes to IDs correctly.
Ben Pfaff [Thu, 4 Nov 2010 17:33:08 +0000 (10:33 -0700)]
ofp-util: Actually map vendor codes to IDs correctly.

Reported-by: Justin Pettit <jpettit@nicira.com>
13 years agoofp-util.h: Use NX_VENDOR_ID instead of literal numeric constant.
Ben Pfaff [Thu, 4 Nov 2010 17:32:46 +0000 (10:32 -0700)]
ofp-util.h: Use NX_VENDOR_ID instead of literal numeric constant.

13 years agoFix typos in comments.
Ben Pfaff [Thu, 4 Nov 2010 17:32:13 +0000 (10:32 -0700)]
Fix typos in comments.

13 years agoMerge remote branch 'origin/master' into HEAD
Ben Pfaff [Wed, 6 Oct 2010 19:24:16 +0000 (12:24 -0700)]
Merge remote branch 'origin/master' into HEAD

13 years agoMerge "master" into "wdp".
Ben Pfaff [Wed, 6 Oct 2010 18:37:03 +0000 (11:37 -0700)]
Merge "master" into "wdp".

13 years agodatapath: Force our include directory to be first.
Jesse Gross [Wed, 6 Oct 2010 01:09:00 +0000 (18:09 -0700)]
datapath: Force our include directory to be first.

XenServer puts our header files in the standard system search path
by default.  This is normally OK, except when we introduce new things
which aren't in those headers.  Since the system picks up the older files
first this leads to undefined sysmbols.

Signed-off-by: Jesse Gross <jesse@nicira.com>
13 years agoxenserver: ovs-external-ids log to file instead of syslog
Ethan Jackson [Fri, 1 Oct 2010 02:29:27 +0000 (02:29 +0000)]
xenserver: ovs-external-ids log to file instead of syslog

ovs-external-ids was crashing on startup because it was brought up
before /dev/log exists.  The simplest solution to this problem is
to have it log to /var/log/openvswitch/ovs-external-ids.log .  This
is consistent with vswitchd and ovsdb-server.

Signed-off-by: Ethan Jackson <ethan@nicira.com>
13 years agotunnel: Correctly check for internal device.
Jesse Gross [Sat, 2 Oct 2010 02:21:08 +0000 (19:21 -0700)]
tunnel: Correctly check for internal device.

With header caching we check to see if the next device in the stack
is an OVS device and, if so, cache that flow as well.  However, the
test for this called internal_dev_get_vport() assuming that it would
return NULL if the device is not an internal device.  It doesn't,
however, it just returns the offset from the device where the vport
data structure would be if it were an internal device.  This changes
it to explicitly check for an internal device first to avoid a panic.

Bug #3470

Reported-by: Ram Jothikumar <rjothikumar@nicira.com>
Signed-off-by: Jesse Gross <jesse@nicira.com>
Reviewed-by: Justin Pettit <jpettit@nicira.com>
13 years agoAdd Nicira extension for modifying queue without transmitting
Justin Pettit [Sat, 2 Oct 2010 07:27:23 +0000 (00:27 -0700)]
Add Nicira extension for modifying queue without transmitting

The OpenFlow OFPAT_ENQUEUE action sets a queue id and outputs the packet
in one shot.  There are times in which the queue should be set, but the
output port is not yet known.  This commit adds the NXAST_SET_QUEUE and
NXAST_POP_QUEUE Nicira extension actions to modify the queue
configuration without requiring a port argument.

CC: Jeremy Stribling <strib@nicira.com>
CC: Keith Amidon <keith@nicira.com>
13 years agonetflow: Avoid (theoretically) looping 2**32 times.
Ben Pfaff [Wed, 1 Sep 2010 19:45:24 +0000 (12:45 -0700)]
netflow: Avoid (theoretically) looping 2**32 times.

If the netflow byte counter is UINT64_MAX, or at any rate much larger than
UINT32_MAX, netflow_expire() could loop for a very long time.  This commit
avoids that case.

This is only a theoretical bug fix.  I don't know of any actual bug that
would cause a counter to be that high.

13 years agonetflow: Do 64-bit division less often.
Ben Pfaff [Wed, 1 Sep 2010 19:43:11 +0000 (12:43 -0700)]
netflow: Do 64-bit division less often.

64-bit division is expensive.  Usually we can avoid it entirely, as done by
this patch.

13 years agoINSTALL.Linux: Describe how to upgrade the Open vSwitch database.
Ben Pfaff [Thu, 26 Aug 2010 21:53:04 +0000 (14:53 -0700)]
INSTALL.Linux: Describe how to upgrade the Open vSwitch database.

Suggested-by: Parham Kiani <pkiani@essex.ac.uk>
13 years agoovs-controller: Improve QoS abilities.
Ben Pfaff [Fri, 1 Oct 2010 20:41:40 +0000 (13:41 -0700)]
ovs-controller: Improve QoS abilities.

This makes it a little easier to test Open vSwitch QoS features using
ovs-controller, by making it possible to assign queues on the basis of
input port, instead of just allowing a single queue for a whole switch.

CC: Michael Mao <mmao@nicira.com>
13 years agolearning-switch: Introduce struct for configuration.
Ben Pfaff [Thu, 23 Sep 2010 21:12:09 +0000 (14:12 -0700)]
learning-switch: Introduce struct for configuration.

This should make extensions easier.

13 years agoovs-controller: Make --with-flows read the file only once, at startup.
Ben Pfaff [Thu, 23 Sep 2010 21:08:13 +0000 (14:08 -0700)]
ovs-controller: Make --with-flows read the file only once, at startup.

A couple of people have reported that ovs-controller --with-flows is
confusing.  This seems to be because it doesn't read the file with the
flows until the first connection from a switch.  Then, if the file has a
syntax error, it exits.

This commit changes the behavior so that it reads the file immediately at
startup instead.

13 years agoofp-parse: Add test.
Ben Pfaff [Fri, 1 Oct 2010 20:08:14 +0000 (13:08 -0700)]
ofp-parse: Add test.

13 years agoofp-print: Make output easier to read.
Ben Pfaff [Fri, 1 Oct 2010 20:05:59 +0000 (13:05 -0700)]
ofp-print: Make output easier to read.

13 years agoofp-parse: Factor out duplicated code into new functions.
Ben Pfaff [Thu, 23 Sep 2010 20:19:49 +0000 (13:19 -0700)]
ofp-parse: Factor out duplicated code into new functions.

13 years agoofp-parse: Properly byteswap in_port.
Ben Pfaff [Fri, 1 Oct 2010 20:05:23 +0000 (13:05 -0700)]
ofp-parse: Properly byteswap in_port.

13 years agoofproto: Only dump queue statistics if the queue really exists.
Ben Pfaff [Thu, 16 Sep 2010 22:41:14 +0000 (15:41 -0700)]
ofproto: Only dump queue statistics if the queue really exists.

Without this commit, "ovs-ofctl queue-stats br0 ALL 1" will print something
like the following if port 3 has queue 1 but none of the other ports do:

    stats_reply (xid=0x7b378): flags=none type=5(queue)
     4 queues
      port 0 queue 1: bytes=?, pkts=?, errors=?
      port 1 queue 1: bytes=?, pkts=?, errors=?
      port 2 queue 1: bytes=?, pkts=?, errors=?
      port 3 queue 1: bytes=0, pkts=0, errors=0

With this commit, it will print the following instead, which seems more
useful:

   stats_reply (xid=0x3ada1): flags=none type=5(queue)
    1 queues
     port 3 queue 1: bytes=0, pkts=0, errors=0

13 years agonetdev-linux: Fix off-by-one error dumping queue stats.
Ben Pfaff [Thu, 16 Sep 2010 22:38:10 +0000 (15:38 -0700)]
netdev-linux: Fix off-by-one error dumping queue stats.

Linux kernel queue numbers are one greater than OpenFlow queue numbers, for
HTB anyhow.  The code to dump queues wasn't compensating for this, so this
commit fixes it up.

13 years agoovs-ofctl: Add "queue-stats" command to print queue stats.
Ben Pfaff [Thu, 16 Sep 2010 22:36:57 +0000 (15:36 -0700)]
ovs-ofctl: Add "queue-stats" command to print queue stats.

13 years agoSwitch many macros from using CONTAINER_OF to using OBJECT_CONTAINING.
Ben Pfaff [Fri, 17 Sep 2010 17:33:10 +0000 (10:33 -0700)]
Switch many macros from using CONTAINER_OF to using OBJECT_CONTAINING.

These macros require one fewer argument by switching, which makes code
that uses them shorter and more readable.

13 years agoutil: New macro OBJECT_CONTAINING.
Ben Pfaff [Mon, 19 Jul 2010 20:46:52 +0000 (13:46 -0700)]
util: New macro OBJECT_CONTAINING.

This macro is a variant on CONTAINER_OF that takes an object pointer
instead of a type name as its second argument.  In the following commit
this will simplify many users of CONTAINER_OF.

13 years agoofproto: Use hash table instead of sparse array for ofports.
Ben Pfaff [Mon, 19 Jul 2010 19:57:22 +0000 (12:57 -0700)]
ofproto: Use hash table instead of sparse array for ofports.

The main advantage of a sparse array over a hash table is that it can be
iterated in numerical order.  But the OVS implementation of sparse arrays
is quite expensive in terms of memory: on a 32-bit system, a sparse array
with exactly 1 nonnull element has 512 bytes of overhead.  In this case,
the sparse array's property of iteration in numerical order is not
important, so this commit converts it to a hash table to save memory.

13 years agosflow: Use hash table instead of sparse array for sflow ports.
Ben Pfaff [Mon, 19 Jul 2010 18:43:05 +0000 (11:43 -0700)]
sflow: Use hash table instead of sparse array for sflow ports.

The main advantage of a sparse array over a hash table is that it can be
iterated in numerical order.  But the OVS implementation of sparse arrays
is quite expensive in terms of memory: on a 32-bit system, a sparse array
with exactly 1 nonnull element has 512 bytes of overhead.  In this case,
the sparse array's property of iteration in numerical order is not
important, so this commit converts it to a hash table to save memory.

13 years agobridge: Use hash table instead of sparse array for bridge ports.
Ben Pfaff [Mon, 19 Jul 2010 18:23:05 +0000 (11:23 -0700)]
bridge: Use hash table instead of sparse array for bridge ports.

The main advantage of a sparse array over a hash table is that it can be
iterated in numerical order.  But the OVS implementation of sparse arrays
is quite expensive in terms of memory: on a 32-bit system, a sparse array
with exactly 1 nonnull element has 512 bytes of overhead.  In this case,
the sparse array's property of iteration in numerical order is not
important, so this commit converts it to a hash table to save memory.

13 years agohmap: New function hmap_clear().
Ben Pfaff [Mon, 19 Jul 2010 18:22:10 +0000 (11:22 -0700)]
hmap: New function hmap_clear().

13 years agonetdev-linux: Use hash table instead of sparse array for QoS classes.
Ben Pfaff [Mon, 19 Jul 2010 18:21:59 +0000 (11:21 -0700)]
netdev-linux: Use hash table instead of sparse array for QoS classes.

The main advantage of a sparse array over a hash table is that it can be
iterated in numerical order.  But the OVS implementation of sparse arrays
is quite expensive in terms of memory: on a 32-bit system, a sparse array
with exactly 1 nonnull element has 512 bytes of overhead.  In this case,
the sparse array's property of iteration in numerical order is not
important, so this commit converts it to a hash table to save memory.

13 years agoovs-vsctl: Reduce log level for "Called as..." for read-only invocations.
Ben Pfaff [Wed, 1 Sep 2010 20:42:33 +0000 (13:42 -0700)]
ovs-vsctl: Reduce log level for "Called as..." for read-only invocations.

When ovs-vsctl is not actually going to modify the database, it is less
interesting in the log, so we might as well only log it at "debug" level.

Suggested-by: Neil McKee <neil.mckee@inmon.com>
13 years agoovs-vsctl: Factor out and optimize searching for a command by name.
Ben Pfaff [Wed, 1 Sep 2010 20:41:09 +0000 (13:41 -0700)]
ovs-vsctl: Factor out and optimize searching for a command by name.

The following commit will introduce a new function that wants to do this
a lot, so we might as well do it efficiently.

13 years agodebian: openvswitch-common ethtool should not be required
Ethan Jackson [Tue, 28 Sep 2010 18:58:00 +0000 (11:58 -0700)]
debian: openvswitch-common ethtool should not be required

The ethtool package is only used to help ovs-bugtool create bug
reports and does not prevent the script from running if it's
missing. Making it a requirement for installation is a bit
draconian.

13 years agodebian: Restart ovs-monitor-ipsec when --monitor specified
Justin Pettit [Tue, 28 Sep 2010 01:48:25 +0000 (18:48 -0700)]
debian: Restart ovs-monitor-ipsec when --monitor specified

The OVS Python daemon library will restart a process when started with
"--monitor" that exits with RESTART_EXIT_CODE.  Have ovs-monitor-ipsec
exit with this code when an uncaught exception occurs.

13 years agodebian: Create ovs-monitor-ipsec rundir if it doesn't exist
Justin Pettit [Tue, 28 Sep 2010 01:33:56 +0000 (18:33 -0700)]
debian: Create ovs-monitor-ipsec rundir if it doesn't exist

Reported-by: Sajjad Lateef <slateef@nicira.com>
13 years agodebian: Added a manpage for ovs-bugtool
Ethan Jackson [Thu, 23 Sep 2010 06:45:58 +0000 (23:45 -0700)]
debian: Added a manpage for ovs-bugtool

Added a manpage for the ovs-bugtool script.

13 years agotests: Test that children restart with special exit code
Ethan Jackson [Thu, 23 Sep 2010 04:59:02 +0000 (21:59 -0700)]
tests: Test that children restart with special exit code

Added a test which checks that the python daemon code properly
restarts child processes which exit with RESTART_EXIT_CODE.

13 years agotests: Remove trailing whitespace from python daemon tests
Ethan Jackson [Thu, 23 Sep 2010 05:48:42 +0000 (22:48 -0700)]
tests: Remove trailing whitespace from python daemon tests

Removes the trailing whitespace from the testing code related to
daemonizing in Python.

13 years agoxenserver: monitor-external-ids should run with --monitor
Ethan Jackson [Wed, 22 Sep 2010 19:40:39 +0000 (12:40 -0700)]
xenserver: monitor-external-ids should run with --monitor

The init script starts monitor-external-ids with --monitor when
configured to do so.  Also made changes to guarantee that --monitor
actually restarts ovs-external-ids.

Signed-off-by: Ethan Jackson <ethan@nicira.com>
13 years agoxenserver: Added additional logging to ovs-external-ids
Ethan Jackson [Wed, 22 Sep 2010 22:38:17 +0000 (15:38 -0700)]
xenserver: Added additional logging to ovs-external-ids

Added additional logging for debug-ability and migrated to python
logging module.

Signed-off-by: Ethan Jackson <ethan@nicira.com>
13 years agovswitch: Consistently use spaces instead of tabs in vswitch.xml
Justin Pettit [Thu, 23 Sep 2010 23:32:13 +0000 (16:32 -0700)]
vswitch: Consistently use spaces instead of tabs in vswitch.xml

13 years agonetdev: Cleanup minor comment formatting issues.
Justin Pettit [Thu, 23 Sep 2010 22:11:39 +0000 (15:11 -0700)]
netdev: Cleanup minor comment formatting issues.

13 years agovswitch: Disable header-caching when IPsec is enabled
Justin Pettit [Thu, 23 Sep 2010 23:25:25 +0000 (16:25 -0700)]
vswitch: Disable header-caching when IPsec is enabled

Header caching speeds up sending tunneled traffic by bypassing the Linux
IP stack.  This also causes it to bypass IPsec processing, which will
break connectivity.  This commit disables header caching when IPsec is
enabled.

13 years agodebian: Use DODTIME instead of DIETIME in init scripts
Justin Pettit [Thu, 23 Sep 2010 20:37:58 +0000 (13:37 -0700)]
debian: Use DODTIME instead of DIETIME in init scripts

Brad pointed out that openvswitch-ipsec init script defined the variable
DIETIME but attempted to use it as DODTIME.  This commit uses DODTIME,
since it's the name used by the openvswitch-switch init script.  The
openvswitch-controller init script had the same issue.

As suggested by Ben, the "s" suffixes are removed from sleep commands,
since they are a GNU extension.

Reported-by: Brad Hall <brad@nicira.com>
13 years agoxenserver: Rename monitor-external-ids -> ovs-external-ids
Ethan Jackson [Wed, 22 Sep 2010 01:03:07 +0000 (18:03 -0700)]
xenserver: Rename monitor-external-ids -> ovs-external-ids

Renamed the monitor-external-ids script ovs-external-ids.
Hopefully this will make it clearer who owns it when someone does
ps xa.

Also removed trailing whitespace from ovs-external-ids.

Signed-off-by: Ethan Jackson <ethan@nicira.com>
13 years agodebian: Support two locations for ethtool
Ethan Jackson [Thu, 23 Sep 2010 00:29:12 +0000 (17:29 -0700)]
debian: Support two locations for ethtool

The ethtool binary recently moved from /usr/sbin to /sbin.  This
change falls back to /usr/sbin/ethtool if /sbin/ethtool does not
exist.

13 years agoAdd missing file to distribution.
Ben Pfaff [Thu, 23 Sep 2010 18:56:36 +0000 (11:56 -0700)]
Add missing file to distribution.

13 years agovswitchd: Rename IFACE_STATS_INTERVAL, iface_stats_timer.
Ben Pfaff [Thu, 23 Sep 2010 17:21:40 +0000 (10:21 -0700)]
vswitchd: Rename IFACE_STATS_INTERVAL, iface_stats_timer.

These are more than interface stats now so the names should be more
generic.

Suggested-by: Justin Pettit <jpettit@nicira.com>
13 years agoovs-vswitchd: Export system stats through Open_vSwitch table.
Ben Pfaff [Wed, 22 Sep 2010 23:45:30 +0000 (16:45 -0700)]
ovs-vswitchd: Export system stats through Open_vSwitch table.

This is intended to provide controllers enough information to determine
whether a switch is overloaded or busted, to enable them to spread load
fairly across a group of switches.

Feature #2421.

CC: Peter Balland <peter@nicira.com>
13 years agoovsdb-doc: Implement new <option>, <ol> tags.
Ben Pfaff [Wed, 22 Sep 2010 23:34:05 +0000 (16:34 -0700)]
ovsdb-doc: Implement new <option>, <ol> tags.

13 years agoovsdb-data: New function ovsdb_datum_from_shash().
Ben Pfaff [Thu, 23 Sep 2010 16:43:46 +0000 (09:43 -0700)]
ovsdb-data: New function ovsdb_datum_from_shash().

13 years agoshash: New function shash_steal().
Ben Pfaff [Thu, 23 Sep 2010 16:42:30 +0000 (09:42 -0700)]
shash: New function shash_steal().

13 years agodaemon: Fix behavior of read_pidfile() for our own pidfile.
Ben Pfaff [Thu, 23 Sep 2010 16:39:47 +0000 (09:39 -0700)]
daemon: Fix behavior of read_pidfile() for our own pidfile.

Opening a file descriptor and then closing it always discards any locks
held on the underlying file, even if the file is still open as another file
descriptor.  This meant that calling read_pidfile() on the process's own
pidfile would discard the lock and make other OVS processes think that the
process had died.  This commit fixes the problem.

13 years agodaemon: Report number of crashes on monitor process command line.
Ben Pfaff [Tue, 21 Sep 2010 21:27:02 +0000 (14:27 -0700)]
daemon: Report number of crashes on monitor process command line.

13 years agovlog: Add VLOG_WARN_ONCE() and similar macros.
Ben Pfaff [Mon, 13 Sep 2010 20:29:57 +0000 (13:29 -0700)]
vlog: Add VLOG_WARN_ONCE() and similar macros.

13 years agodebian: additional copyright update for xenserver/
Ben Pfaff [Thu, 23 Sep 2010 18:20:10 +0000 (11:20 -0700)]
debian: additional copyright update for xenserver/

Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Ben Pfaff <blp@nicira.com>
13 years agodebian: update copyright for xenserver/
Simon Horman [Thu, 23 Sep 2010 01:55:15 +0000 (10:55 +0900)]
debian: update copyright for xenserver/

Further to the recent work done by Ben Pfaff and Ian Campbell to
clarify the license of all the files in xenserver/ the debian/copyright.in
file seems to need updating.

Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Ben Pfaff <blp@nicira.com>
13 years agoxenserver: Only put the primary XenServer UUID in default bridge-id
Ethan Jackson [Wed, 22 Sep 2010 06:57:13 +0000 (23:57 -0700)]
xenserver: Only put the primary XenServer UUID in default bridge-id

This patch defensively guarantees that the first id in
xs-network-uuids will belong to the primary network (as opposed to
a vlan).  Given that the primary network id comes first, it parses
xs-network-ids and only copies the primary id to bridge-id when
monitor-external-ids is run.

Feature #3647

Signed-off-by: Ethan Jackson <ethan@nicira.com>
Reviewed-by: Ben Pfaff <blp@nicira.com>
13 years agovswitch: Reference ipsec_local_ip and ipsec_psk with underscores
Justin Pettit [Thu, 23 Sep 2010 05:52:04 +0000 (22:52 -0700)]
vswitch: Reference ipsec_local_ip and ipsec_psk with underscores

The GRE-over-IPsec the documentation describes "ipsec-local-ip" and
"ipsec-psk" when they actually use underscores.

13 years agodebian: Add support for GRE-over-IPsec
Justin Pettit [Fri, 17 Sep 2010 02:19:11 +0000 (19:19 -0700)]
debian: Add support for GRE-over-IPsec

The ovs-monitor-ipsec daemon monitors the Interface table for GRE
entries.  If an entry specifies other-config parameters "ipsec-local-ip"
and ("ipsec-psk" or "ipsec-cert"), it will create the appropriate
security associations so that all GRE traffic to the remote host will be
encrypted.  In order for the two GRE tunnels to communicate, both sides
need to be configured for IPsec with appropriate authentication.

Currently, ovs-monitor-ipsec does not support certificate authentication
or ensure that an interface is actually attached to a bridge.  Both of
these issues will be addressed in a forthcoming patch.

NB: While GRE-over-IPsec should work on any system with a relatively
recent racoon and setkey, it has only been tested on Debian.  As such,
only Debian packaging has been provided.

13 years agodebian: Allow automake versions greater than or equal to 1.10
Justin Pettit [Thu, 16 Sep 2010 22:37:16 +0000 (15:37 -0700)]
debian: Allow automake versions greater than or equal to 1.10

13 years agotunneling: Allow disabling tunnel header caching.
Jesse Gross [Mon, 30 Aug 2010 22:34:04 +0000 (15:34 -0700)]
tunneling: Allow disabling tunnel header caching.

Tunnel header caching significantly improves performance by bypassing
much of the transmit path.  However, in some special cases or for
debugging it may be desirable to traverse the entire IP stack.  This
exposes that as an option (default is to enable header caching).

Signed-off-by: Jesse Gross <jesse@nicira.com>
Reviewed-by: Ben Pfaff <blp@nicira.com>
13 years agodatapath: Add tunnel header caching.
Jesse Gross [Fri, 27 Aug 2010 20:55:02 +0000 (13:55 -0700)]
datapath: Add tunnel header caching.

On the transmit path we generate essentially the same tunnel header
for every packet to a given destination.  However, each packet must
have the headers assembled in pieces, lookup the destination in the
routing table, and lookup the flow in OVS.  This avoids that extra
work by caching all of the header and output path information and
only rebuilding it when something actually changes.

This optimization reduces CPU load on transmit by approximately 13%.

Signed-off-by: Jesse Gross <jesse@nicira.com>
Reviewed-by: Ben Pfaff <blp@nicira.com>
13 years agodatapath: Backport workqueue functions.
Jesse Gross [Tue, 31 Aug 2010 22:38:25 +0000 (15:38 -0700)]
datapath: Backport workqueue functions.

An upcoming commit will use some workqueue functions that weren't
available on earlier kernels, so this backports those functions.
The backporting uses timers instead of delayed work queues because
the earlier versions of work queues have some unsafe corner cases.
In addition, this removes some unused work queue backporting code
that is no longer used because it is potentially unsafe.

Note that this commit changes the behavior of work queues: normally
they run in process context but the backported version runs in
softirq context.

Signed-off-by: Jesse Gross <jesse@nicira.com>
Reviewed-by: Ben Pfaff <blp@nicira.com>
13 years agodatapath: Move is_frag out of struct ovs_skb_cb.
Jesse Gross [Sun, 29 Aug 2010 21:28:58 +0000 (14:28 -0700)]
datapath: Move is_frag out of struct ovs_skb_cb.

is_frag is only used for communication between two functions, which
means that it doesn't really need to be in the SKB CB.  This wouldn't
necessarily be a problem except that there are also a number of other
paths that lead to this being uninitialized.  This isn't a problem
now but uninitialized memory seems dangerous and there isn't much
upside.

Signed-off-by: Jesse Gross <jesse@nicira.com>
Reviewed-by: Ben Pfaff <blp@nicira.com>
13 years agodatapath: Enable usage of cached flows.
Jesse Gross [Sun, 29 Aug 2010 17:49:11 +0000 (10:49 -0700)]
datapath: Enable usage of cached flows.

An upcoming commit will add support for supplying cached flows for
packets entering the datapath.  This adds the code in the datapath
itself to recognize these cached flows and use them instead of
extracting the flow fields and doing a lookup.

Signed-off-by: Jesse Gross <jesse@nicira.com>
Reviewed-by: Ben Pfaff <blp@nicira.com>
13 years agodatapath: Add ref counting for flows.
Jesse Gross [Sun, 29 Aug 2010 16:49:51 +0000 (09:49 -0700)]
datapath: Add ref counting for flows.

Currently flows are only used within the confines of one
rcu_read_lock()/rcu_read_unlock() session.  However, with the
addition of header caching we will need to hold references to flows
for longer periods of time.  This adds support for that by adding
refcounts to flows.  RCU is still used for normal packet handling
to avoid a performance impact from constantly updating the refcount.
However, instead of directly freeing the flow after a grace period
we simply decrement the refcount.

Signed-off-by: Jesse Gross <jesse@nicira.com>
Reviewed-by: Ben Pfaff <blp@nicira.com>
13 years agodatapath: Move flow allocation into a function.
Jesse Gross [Tue, 27 Jul 2010 01:46:27 +0000 (18:46 -0700)]
datapath: Move flow allocation into a function.

As the process to allocate a flow becomes more involved it becomes
more cumbersome for the code to be mixed in with the general
datapath so split it out into a new function.

Signed-off-by: Jesse Gross <jesse@nicira.com>
Reviewed-by: Ben Pfaff <blp@nicira.com>
13 years agoxenserver: Now everything is free.
Ben Pfaff [Wed, 22 Sep 2010 20:16:07 +0000 (13:16 -0700)]
xenserver: Now everything is free.

Signed-off-by: Ben Pfaff <blp@nicira.com>
13 years agoxenserver: Add license to uuid.py.
Ben Pfaff [Wed, 22 Sep 2010 17:03:31 +0000 (10:03 -0700)]
xenserver: Add license to uuid.py.

There seemed to be some confusion regarding this file's provenance, so it
is best to clarify.

Signed-off-by: Ben Pfaff <blp@nicira.com>
13 years agoxenserver: Add explicit license to refresh-xs-network-uuids.
Ben Pfaff [Wed, 22 Sep 2010 17:05:29 +0000 (10:05 -0700)]
xenserver: Add explicit license to refresh-xs-network-uuids.

I had assumed that a trivial one-line shell script didn't need an explicit
license, but it seems that I was wrong.

Signed-off-by: Ben Pfaff <blp@nicira.com>
13 years agoxenserver: Change license of xsconsole plugin to GPLv2.
Ben Pfaff [Wed, 22 Sep 2010 16:32:58 +0000 (09:32 -0700)]
xenserver: Change license of xsconsole plugin to GPLv2.

This file was under a proprietary license because it was derived from
proprietary XenServer code.  That upstream code is now under GPLv2, so
change the downstream code to GPLv2 also.

Acked-by: Ian Campbell <Ian.Campbell@citrix.com>
Signed-off-by: Ben Pfaff <blp@nicira.com>
13 years agoxenserver: Add GPLv2 license text.
Ben Pfaff [Wed, 22 Sep 2010 20:14:37 +0000 (13:14 -0700)]
xenserver: Add GPLv2 license text.

xsconsole is being relicensed under GPLv2 so we need to include the text.

It would be more usual to name this file COPYING and to name the LGPLv2.1
that is already named LICENSE as COPYING.LIB, but some of the files pulled
in from XenServer say that their license is in a file named LICENSE.  I
don't expect that Citrix would be willing to change that, so it seems
better to keep LGPLv2.1 named LICENSE.

Signed-off-by: Ben Pfaff <blp@nicira.com>
13 years agoxenserver: Remove LICENSE header that is difficult to keep up to date.
Ben Pfaff [Wed, 22 Sep 2010 16:52:27 +0000 (09:52 -0700)]
xenserver: Remove LICENSE header that is difficult to keep up to date.

I had forgotten that I had added this header.  Let's keep all the
information about licensing in individual files instead.

Signed-off-by: Ben Pfaff <blp@nicira.com>
13 years agoovs-vsctl: Add many more usage examples.
Ben Pfaff [Mon, 20 Sep 2010 18:57:13 +0000 (11:57 -0700)]
ovs-vsctl: Add many more usage examples.

13 years agoovs-vsctl: Allow "get" commands to create @names also.
Ben Pfaff [Mon, 20 Sep 2010 17:56:15 +0000 (10:56 -0700)]
ovs-vsctl: Allow "get" commands to create @names also.

This is useful for adding records that refer to other records by UUID, e.g.
   ovs-vsctl \
     -- set bridge br0 mirrors=@m \
     -- --id=@eth0 get port eth0 \
     -- --id=@eth0 get port eth1 \
     -- --id=@m create mirror name=mymirror select-dst-port=@eth0 \
                              select-src-port=@eth0 output-port=@eth1

13 years agotests: Add 5-second timeout to ovs-vsctl tests.
Ben Pfaff [Tue, 21 Sep 2010 21:27:51 +0000 (14:27 -0700)]
tests: Add 5-second timeout to ovs-vsctl tests.

Otherwise some of the tests may not terminate if something goes wrong.
(Formerly, ovs-vsctl had a default timeout of 5 seconds, so this was not
necessary before.)

13 years agoxenserver: reload sends SIGHUP to monitor-external-ids
Ethan Jackson [Fri, 17 Sep 2010 23:05:04 +0000 (16:05 -0700)]
xenserver: reload sends SIGHUP to monitor-external-ids

When the init script's reload function is called it will send a
SIGHUP to monitor-external-ids.  This will cause
monitor-external-ids to re-generate everything.

Feature #3668.

13 years agoxenserver: monitor-external-ids responds to SIGHUP
Ethan Jackson [Fri, 17 Sep 2010 22:07:02 +0000 (15:07 -0700)]
xenserver: monitor-external-ids responds to SIGHUP

When monitor-external-ids receives a SIGHUP it will forget
everything and run as if it was newly started.

Feature #3668.

13 years agoIndicate that OVS only works with kernels 2.6.18 and greater
Justin Pettit [Tue, 21 Sep 2010 18:58:11 +0000 (11:58 -0700)]
Indicate that OVS only works with kernels 2.6.18 and greater

At one time, we tested against 2.6.15.  This hasn't been done for a long
time, and it almost certainly no longer works.

13 years agodebian: Rename openvswitch-python to python-openvswitch
Sajjad Lateef [Tue, 21 Sep 2010 18:18:26 +0000 (11:18 -0700)]
debian: Rename openvswitch-python to python-openvswitch

Package name changed to be consistent with
Debian Python policy.

The python files are installed in
/usr/share/python-support/python-openvswitch/ovs and
/usr/share/python-support/python-openvswitch/ovs/db

Changed Section to python, per lintian

13 years agodebian: The second argument to m-a should be openvswitch-datapath
Simon Horman [Tue, 21 Sep 2010 03:06:14 +0000 (12:06 +0900)]
debian: The second argument to m-a should be openvswitch-datapath

Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Ben Pfaff <blp@nicira.com>
13 years agodebian: Dont fail init if module cant be inserted
Simon Horman [Tue, 21 Sep 2010 03:06:13 +0000 (12:06 +0900)]
debian: Dont fail init if module cant be inserted

The problem here is that the daemon is started/restarted on
package installation, but the module may not be present at that
time and (as far as I know) its bad form to fail the package installation
in that circumstance.

In keeping with the way ipvsadm handles a similar problem,
exit with a non-error exit status if the module can't be inserted.
The loud error message is still displayed.

Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Ben Pfaff <blp@nicira.com>
13 years agodebian: Add override of non-standard-dir-perm to corekeeper
Simon Horman [Tue, 21 Sep 2010 03:06:12 +0000 (12:06 +0900)]
debian: Add override of non-standard-dir-perm to corekeeper

Remove code to restart openvswitch-switch from its postinst script
as this is automatically added by dh_installinit

Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Ben Pfaff <blp@nicira.com>
13 years agopython: timer_wait_until calculated current time incorrectly
Ethan Jackson [Fri, 17 Sep 2010 22:06:17 +0000 (15:06 -0700)]
python: timer_wait_until calculated current time incorrectly

The timer_wait_until function in poller.py was using Time.msec to
figure out the current time.  Unfortunately, Time.msec does not in
exist. Changed to use ovs.timeval.msec .

13 years agodebian: Add openvswitch-python package
Sajjad Lateef [Fri, 17 Sep 2010 21:53:42 +0000 (14:53 -0700)]
debian: Add openvswitch-python package

This installs the Python runtime bindings for
Open vSwitch database into
/usr/share/python-support/openvswitch-python/ovs and
/usr/share/python-support/openvswitch-python/ovs/db

Updated FSF address in copyright file

Minor Whitespace re-formatting

Removed prerm, preinst, postinst files for openvswitch-python

13 years agovswitchd: Document policing implementation and caveats.
Ben Pfaff [Mon, 20 Sep 2010 17:22:19 +0000 (10:22 -0700)]
vswitchd: Document policing implementation and caveats.

With some text from Dan Wendlandt <dan@nicira.com> adapted from
http://openvswitch.org/?page_id=267

CC: Keith Amidon <keith@nicira.com>
13 years agoAvoid shadowing local variable names.
Ben Pfaff [Thu, 2 Sep 2010 17:09:09 +0000 (10:09 -0700)]
Avoid shadowing local variable names.

All of these changes avoid using the same name for two local variables
within a same function.  None of them are actual bugs as far as I can tell,
but any of them could be confusing to the casual reader.

The one in lib/ovsdb-idl.c is particularly brilliant: inner and outer
loops both using (different) variables named 'i'.

Found with GCC -Wshadow.

13 years agoovsdb: Fix bug in "wait" command implementation.
Ben Pfaff [Thu, 2 Sep 2010 17:06:42 +0000 (10:06 -0700)]
ovsdb: Fix bug in "wait" command implementation.

The declaration of "error" that this commit removes shadowed an outer local
declaration of "error", which caused errors detected by this code not to be
propagated up to the outer level.

Found with GCC -Wshadow.

13 years agoxenserver: monitor-external-ids remove redundant ovs-vsctl calls
Ethan Jackson [Fri, 17 Sep 2010 15:23:32 +0000 (08:23 -0700)]
xenserver: monitor-external-ids remove redundant ovs-vsctl calls

The number of ovs-vsctl calls required to add a new vif in
monitor-external-ids grew linearly with the number of vifs in the
system.  Changed to only do O(1) ovs-vsctl calls per vif addition.

13 years agoovs-vsctl: Remove default timeout.
Ben Pfaff [Fri, 17 Sep 2010 21:37:51 +0000 (14:37 -0700)]
ovs-vsctl: Remove default timeout.

On overloaded XenServers the current default timeout of 5 seconds can
occasionally be reached, which causes VM startup to fail.  This commit
fixes the problem by removing the default timeout and changing each
invocation of ovs-vsctl within the tree to specify its own timeout,
if appropriate.

Bug #3573.

13 years agoAUTHORS: Add Alexey I. Froloff as reporter.
Jesse Gross [Fri, 17 Sep 2010 18:47:49 +0000 (11:47 -0700)]
AUTHORS: Add Alexey I. Froloff as reporter.

13 years agodatapath: Remove backported random32().
Jesse Gross [Fri, 17 Sep 2010 18:23:19 +0000 (11:23 -0700)]
datapath: Remove backported random32().

Nothing uses it anymore and it causes problems when backported on
some distributions.  Kernels we support have net_random(), which
is the same thing so there is no reason to have an entire copy of
the random number generator in our source tree.

Reported-by: Alexey I. Froloff <raorn@altlinux.org>
Signed-off-by: Jesse Gross <jesse@nicira.com>
Acked-by: Ben Pfaff <blp@nicira.com>
13 years agodebian: Created a debian equivalent to xen-bugtool
Ethan Jackson [Wed, 15 Sep 2010 08:51:40 +0000 (01:51 -0700)]
debian: Created a debian equivalent to xen-bugtool

ovs-bugtool creates a tarball of useful information which people
can submit with bug reports.  The source is copied from xen-bugtool
with the xen specific removed or changed.

13 years agodebian: Init script should put core dumps in an appropriate place
Ethan Jackson [Wed, 15 Sep 2010 08:51:15 +0000 (01:51 -0700)]
debian: Init script should put core dumps in an appropriate place

Before this commit the init script did not change the cwd of
openvswitch processes it started.  Thus, core files were created in
root directory.  This patch changes the cwd of openvswitch to
a more reasonable location.

13 years agoovsdb-doc: Be less explicit in ovs-vswitchd.conf.db(5).
Ben Pfaff [Wed, 1 Sep 2010 22:12:23 +0000 (15:12 -0700)]
ovsdb-doc: Be less explicit in ovs-vswitchd.conf.db(5).

The documentation doesn't really need to say that a field may be "between
0 and 4294967295 characters long".

This regression was introduced by commit 991559357 "Implement initial
Python bindings for Open vSwitch database."