Ben Pfaff [Tue, 13 Apr 2010 17:30:28 +0000 (10:30 -0700)]
ovs-ofctl: Fix write before beginning of string in "add-flow".
If "action" is the first word in a flow specification, then we were writing
one byte before the beginning of the string. So overwrite the 'a' in
"action" instead; we know it's really there.
Ben Pfaff [Tue, 13 Apr 2010 22:08:37 +0000 (15:08 -0700)]
configure: Convert --with-l26=<dir> argument to absolute path.
If the argument to --with-l26 is given as a relative pathname, then if
configuration succeeds, the build will fail, because the current directory
during the kernel build is different from that at configuration time.
Avoid the problem by converting the argument to an absolute path if
necessary.
Ben Pfaff [Tue, 13 Apr 2010 23:49:22 +0000 (16:49 -0700)]
dpif: Make dpif_flow_get() results predictable on error.
If dpif_flow_get()'s caller is less cautious than it should be, then it
will get surprising results when it looks at the returned flow on error.
This commit at least gives it plausible results.
Ben Pfaff [Tue, 13 Apr 2010 23:48:10 +0000 (16:48 -0700)]
ovs-dpctl: In "dump-flows", only print flows that can be retrieved.
If dpif_flow_get() returns an error then we'd better not try to print
the flow (especially not the actions since check_rw_odp_flow() clears
the first action to 0xcc).
Ben Pfaff [Fri, 9 Apr 2010 21:04:10 +0000 (14:04 -0700)]
ofproto: Maximum value of "int" is INT_MAX, not UINT32_MAX.
This bug seems to be dormant at the moment, since the -1 gets passed
through unchanged to do_send_packet_in() and then to make_packet_in()
and then gets converted to SIZE_MAX as part of the MIN invocation in that
function. It is still better to fix it.
Ben Pfaff [Tue, 13 Apr 2010 17:12:25 +0000 (10:12 -0700)]
ofproto: Make NXAST_RESUBMIT take header modifications into account.
Until now, the NXAST_RESUBMIT action has always looked up the original
flow except for the updated in_port. This commit changes the semantics to
instead look up the flow as modified by any preceding actions that affect
it, e.g. if OFPAT_SET_VLAN_VID precedes NXAST_RESUBMIT, then NXAST_RESUBMIT
now looks up the flow with the modified VLAN, not the original (as well as
the modified in_port).
Also, document how NXAST_RESUBMIT is supposed to work.
Ben Pfaff [Fri, 9 Apr 2010 22:19:12 +0000 (15:19 -0700)]
ofproto: Copy the flow being translated in xlate_actions().
This change should have no user-visible effect, but it paves the way for
the following commit, which requires the action_xlate_ctx's flow to be
modifiable.
Ben Pfaff [Tue, 13 Apr 2010 16:28:13 +0000 (09:28 -0700)]
Make fatal signals cause an exit more promptly in special cases.
The fatal-signal library notices and records fatal signals (e.g. SIGTERM)
and terminates the process on the next trip through poll_block(). But
some special utilities do not always invoke poll_block() promptly, e.g.
"ovs-ofctl monitor" does not call poll_block() as long as OpenFlow messages
are available. But these special cases seem like they are all likely to
call into functions that themselves block (those with "_block" in their
names). So make a new rule that such functions should always call
fatal_signal_run(), either directly or through poll_block(). This commit
implements and documents that rule.
xenserver: Fix ip_gre_mod modprobe issue in init script
The OVS kernel modules were moved to kernel/extra/openvswitch, but the
init script wasn't updated to look for the ip_gre_mod kernel module
there. This commit fixes that.
xenserver: Allow use first class datamodel field for controller IP
Starting in XenServer 5.6.0, a "vswitch_controller" key is available to
store the controller's IP address in the "pool" table of XAPI. Older
versions must still use the "vSwitchController" key in "other_config".
Based on commits 37fee7 and 0ebd737 from the xs5.7 branch written by
Ian Campbell.
xenserver: Only register xsconsole plugin if OVS is running
The 5.6.0 XenServer release will include OVS but not have it enabled by
default. By only registering the xsconsole plugin on systems running OVS,
this plugin can be included in the main distribution.
Based on commit 0ebd737 from the xs5.7 branch written by Ian Campbell.
Ben Pfaff [Thu, 18 Mar 2010 19:59:32 +0000 (12:59 -0700)]
stream: Generalize stream_open_block().
This change makes it possible to separate opening a stream from blocking on
connection completion. This avoids some code redundancy in an upcoming
commit.
Ben Pfaff [Wed, 24 Mar 2010 00:19:36 +0000 (17:19 -0700)]
stream-ssl: Make it possible to avoid checking peer SSL certificate.
In Citrix XenServer, the hosts have SSL private keys and certificates, but
those certificates are not signed by any certificate authority. So we
must provide a way to avoid checking certificates against a CA if we want
other OVS tools to be able to talk to XenServer hosts over SSL. This
commit makes that possible.
Ben Pfaff [Tue, 23 Mar 2010 22:29:10 +0000 (15:29 -0700)]
ovs-vsctl: Add SSL support.
Normally ovs-vsctl is run locally, with a Unix domain socket as target, but
it can be useful over SSL as well from a remote host, so this commit
enables that use.
Ben Pfaff [Fri, 9 Apr 2010 23:01:02 +0000 (16:01 -0700)]
stream-ssl: Read existing CA certificate more eagerly during bootstrap.
When do_ca_cert_bootstrap() attempts to bootstrap a CA certificate from a
remote host, it gives up if the CA certificate file already exists. It
knows that this file did not exist some time earlier (because it checked),
so it logged a warning and just returns. The next time that
stream_ssl_set_ca_cert_file() gets called, it will read the new CA
certificate file and all will be well.
That works OK in ovsdb-server, which calls stream_ssl_set_ca_cert_file()
every time through its main loop. It does not work well for ovs-vswitchd,
which only calls that function when it needs to reconfigure. But it
should work fine to call it directly from do_ca_cert_bootstrap(), so this
commit changes it to do that.
In a flow description, the VLAN VID was printed in hex, but an VLAN VID
modification would print the value in decimal. This commit consistently
prints the value in decimal.
ovs-ofctl: Allow setting cookie as a decimal or hex value
Clean-up a few items related to flow cookies:
- Allow setting the flow cookie as a hex or decimal string
- Consistently print the cookie in hex
- Document the ability to set the flow cookie in ovs-ofctl.
vswitch: Mark bridge_update_desc argument as unused
The implementation of bridge_update_desc() is empty, which causes a
compiler warning for the argument. Mark the argument unused until we
get a chance to fix the function's implementation.
xenserver: Put kernel modules in "extra" directory
This change cleans up a couple of items. First, it makes sure that our
newly installed kernel modules are picked up instead of any ones that
shipped with XenServer. Second, it prevents having to do the install
with "--nodeps".
xenserver: Don't install xsconsole plugin as symlink
The OVS xsconsole plugin used to be installed in
/usr/share/openvswitch/scripts directory and then a symlink was created
to the /usr/lib/xsconsole/plugins-base directory. The Citrix packaging of
OVS just placed it directly into the xsconsole plugin directory. This
worked fine until we renamed our package "openvswitch", which is the
same as Citrix uses.
On an upgrade, the default package handler would attempt to clean up files
that were in the Cirix packaging, but not in the upgraded package. Since
it didn't know that we had replaced their plugin with our symlink, it would
destroy our symlink.
This commit just places the plugin directly into the
/usr/lib/xsconsole/plugins-base directory, which allows us to seamlessly
upgrade to newer Open vSwitch versions.
Ben Pfaff [Fri, 2 Apr 2010 22:12:42 +0000 (15:12 -0700)]
ofproto: Make OFPFC_MODIFY and OFPFC_MODIFY_STRICT add a flow if no match.
OpenFlow 1.0 says that OFPFC_MODIFY and OFPFC_MODIFY_STRICT are supposed
to add the specified flow to the flow table if it does not already contain
one that matches.
Lintian was complaining about empty binary packages for nicira-switch
and openvswitch-pki. By clarifying that they are a "meta-package" or
"dependency package", it shuts Lintian up.
debian: Add $remote_fs to Required-Start/-Stop field in init scripts
Init scripts that depend on items in /usr must have $remote_fs defined
in their Required-Start and Required-Stop fields. This will ensure that
/usr is mounted before a start or stop call is made.
The ssl.man page uses the IQ macro, but doesn't define it. Usually this
doesn't matter since its already been defined by man page that's
including it. However, in a couple of cases it doesn't, so this cleans
that up.
Justin Pettit [Tue, 30 Mar 2010 00:06:19 +0000 (17:06 -0700)]
debian: Fix references to OpenFlow in ovs-switch-config template
The ovs-switch-config template had clearly not been updated since the
project switched from OpenFlow to Open vSwitch. This updates the
dialog's so they're consistent with the project's real name.
Ian Campbell [Thu, 1 Apr 2010 09:45:22 +0000 (10:45 +0100)]
xenserver: strip all alpha-suffixes from the xenserver build number.
The letter at the end of the build number indicates the site where the build
was done. All publicly released builds come from "p" but within Citrix we have
other suffixes (i.e. in Cambridge we get c).
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Justin Pettit [Tue, 30 Mar 2010 23:58:12 +0000 (16:58 -0700)]
xenserver: Add emergency_reset hook to XAPI plugin
There's a requirement that OVS can be put back into a known good state
remotely. This will be implemented as a function through the OVS XAPI
plugin. This commit only provides a hook for testing purposes. The
functionality will be added later.
Ben Pfaff [Tue, 30 Mar 2010 16:45:48 +0000 (09:45 -0700)]
xenserver: updated xen-bugtool to XenServer trunk version.
The version of xen-bugtool include in openvswitch.git was forked long
ago from the xenserver version. Pull up to the version taken from
XenServer's trunk branch just after the integration of 22c75d593 from
openvswitch.git.
I tested that core and log files as well as ovs-dpctl {show,dump-flows}
and ovs-ofctl {show,dump-flows,status} are picked up correctly after the
big vswitch->openvswitch renaming.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Ian Campbell [Tue, 30 Mar 2010 08:34:29 +0000 (09:34 +0100)]
xenserver: gate all logrotate reopens on presence of a pid file
This probably only makes a difference in the case where you have vswitch
installed but (deliberately) not running _and_ you happen to have ovs-* logs big
enough to be worth rotating. Very much an edge case.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Justin Pettit [Sat, 27 Mar 2010 02:03:52 +0000 (19:03 -0700)]
xenserver: Correct renaming issue in openvswitch-xapi-update
A recent commit changed references from "vswitch" to "openvswitch".
This included changing the name of "vswitch-xapi-update" to
"openvswitch-xapi-update". Unfortunately, the contents of the file
did not get similarly updated, so the script had issues. This commit
fixes that.
Ian Campbell [Thu, 1 Oct 2009 16:26:22 +0000 (09:26 -0700)]
xenserver: Fix init script typos that prevented turning brcompatd back on.
Commit 723a8c3ca "xenserver: Disable brcompatd" turned off brcompatd by
default but allowed it to be enabled using an option, but the option
didn't work. This commit fixes that problem.
This command was returning success when vswitchd was not running.
Our automated test relies on this command to decide if the host uses
vswitch or not.
If vswitchd is not OK then brcompatd is not checked at all. Since the
return codes apparently have specific meanings I couldn't see a sensible
way to combine multiple failure results.
(Cherry-picked from xs5.7 branch by Ben Pfaff but merge conflicts meant
that the whole thing had to be redone.)
Ian Campbell [Fri, 2 Oct 2009 10:32:10 +0000 (11:32 +0100)]
xenserver: Correct "service vswitch status" when brcompatd is disabled
I don't think it makes sense to report brcompatd's status when it is
explicitly disabled. Doing so causes service status to return an error
when brcompatd is deliberately disabled.
Justin Pettit [Fri, 26 Mar 2010 05:38:13 +0000 (22:38 -0700)]
Cleanup default file locations and XenServer packaging
This commit cleans up the locations of a number of files and directories
used. These include:
- Config file lives in /etc/openvswitch/conf.db
- Logs go into /var/log/openvswitch
- ovsdb-server socket is /var/run/openvswitch/db.sock
- Schema goes into /usr/share/openvswitch/vswitch.ovsschema
- PID files go in /var/run/openvswitch
For XenServer, these additional changes are made:
- Cores go in /var/xen/openvswitch
- OVS binaries run in /var/xen/openvswitch
In addition, it attempts to cleanup the XenServer packaging. This
includes referring to the project as "openvswitch" as opposed to the
somewhat presumptuous "vswitch".
Note: Changes to the Debian packaging will be forthcoming.
Ben Pfaff [Thu, 25 Mar 2010 18:34:01 +0000 (11:34 -0700)]
timeval: Always log true poll interval instead of rounding off.
This code triggers when a trip through the process's main loop takes much
longer than expected. The code for calculating the expected time rounds
down to a maximum of 10000 ms to avoid overflow. But there is no reason
that the correct time should not be displayed in the log message, and
furthermore displaying the correct time may help tracking down the
underlying issue, since it lets the administrator find out exactly when
the trip through the main loop started. So this commit displays the exact
time without rounding down.
Ben Pfaff [Thu, 25 Mar 2010 16:46:31 +0000 (09:46 -0700)]
INSTALL.bridge: Update.
The instructions did not assume the default /usr/local install location,
which is confusing.
Also, the instructions partially replicated those in INSTALL.Linux, but it
seems better to only give the additional steps that are necessary, so do
that too.
Ben Pfaff [Fri, 19 Mar 2010 18:44:31 +0000 (11:44 -0700)]
ofproto: Don't optimize out updating flow cookie.
The OFPFC_MODIFY and OFPFC_MODIFY_STRICT optimizes out modifying the
actions if the actions didn't change, but it also skipped updating the
flow cookie in that case, which seems wrong. This commit fixes the
problem.
Ben Pfaff [Wed, 24 Mar 2010 00:20:42 +0000 (17:20 -0700)]
jsonrpc: Fix potential memory leak.
This is unlikely to occur very often in practice, because s->stream
usually gets stuffed into s->rpc before long, but it is still a good idea
to fix it.
Ben Pfaff [Tue, 23 Mar 2010 22:27:44 +0000 (15:27 -0700)]
fatal-signal: Initialize library upon any call to public function.
Not calling fatal_signal_init() means that the signal handlers don't get
registered, so the process won't clean up on fatal signals. Furthermore,
signal_fds[0] is then 0, which means that fatal-signal_wait() waits on
stdin, so if you are testing a program interactively and accidentally type
something on stdin then that program's CPU usage jumps to 100%.
Since poll_block() calls fatal_signal_wait() this seems like the most
reliable solution.
Ben Pfaff [Wed, 24 Mar 2010 20:15:41 +0000 (13:15 -0700)]
stream-ssl: Only re-read certificates and keys if they change.
Commit 415f6c0b1 "stream-ssl: Make no-op reconfiguration cheap" caused
ovsdb-server to re-read its certificates and keys every 60 seconds just
in case they changed. However, doing this causes OpenSSL to drop its
connections. This commit solves the problem by making stream-ssl re-read
certificates and keys only if the files changed.
Ben Pfaff [Thu, 18 Mar 2010 16:37:31 +0000 (09:37 -0700)]
vswitchd: Make names of Bridge external_ids generic.
Until now the names of the external_ids keys used for Bridge records have
implied that they are specific to XenServer, because they begin with "xs-".
They are more generic in intent, however, so this commit removes the "xs-"
prefix and explains them more generically.
This finishes the renaming process started in commit c0f9490 "vswitchd:
Make names of Interface external_ids generic."
CC: Ian Campbell <ian.campbell@citrix.com> Signed-off-by: Ben Pfaff <blp@nicira.com>
Ben Pfaff [Tue, 23 Mar 2010 16:40:26 +0000 (09:40 -0700)]
xenserver: Fix "ovs-vsctl get" call in vswitch-cfg-update.
The ovs-vsctl arguments were being passed as a single string instead of
broken up as if the shell had performed word splitting. This fixes the
problem.
Without this commit, "unknown command 'get Open_vSwitch . managers';
use --help for help" appears in the system log. Adding the commit
suppresses that message.
NIC-72. Reported-by: Andy Southgate <andy.southgate@citrix.com> Signed-off-by: Ben Pfaff <blp@nicira.com>
Ben Pfaff [Fri, 19 Mar 2010 00:09:42 +0000 (17:09 -0700)]
vswitch: Limit SSL table to a single row.
Only a single row in the SSL can be useful currently. This should help to
prevent confusion since ovsdb-server will choose an SSL configuration
randomly if there is more than one.
Ben Pfaff [Fri, 19 Mar 2010 00:12:02 +0000 (17:12 -0700)]
ovsdb-server: Obtain SSL configuration from database.
ovsdb-server should be able to obtain its SSL configuration from the
database that it is serving out, instead of having to specify it on the
command line. This commit makes it so.
Ben Pfaff [Fri, 19 Mar 2010 00:00:02 +0000 (17:00 -0700)]
docs: Fix ovsdb-server manpage.
The description of --remote=db:table,column got accidentally dropped a
number of commits back, so restore it. Also, document that ovsdb-server
supports SSL bootstrapping.
Ben Pfaff [Thu, 18 Mar 2010 23:40:35 +0000 (16:40 -0700)]
stream-ssl: Make no-op reconfiguration cheap.
Until now, the stream_ssl functions for configuring private keys,
certificates, and CA certificates have always called into OpenSSL to read
a file. This commit instead makes them do that only if the file name
changed (or it has been 60 seconds since we last tried, in case someone
installed the file behind our backs).
This allows us to factor some code out of vswitchd. In an upcoming commit
we will want to do essentially the same thing from ovsdb-server, so this
avoid code redundancy.
Ben Pfaff [Thu, 18 Mar 2010 23:08:32 +0000 (16:08 -0700)]
stream-ssl: Permit race in bootstrapping CA certificate.
If two processes were both configured to bootstrap the CA certificate, then
one of them would succeed in writing it to a file and use it, and the other
one would fail to use it because the file was created behind its back.
This commit fixes the problem by making the bootstrap code accept a CA
certificate file that exists at the time that bootstrapping tries to create
it.
Jesse Gross [Fri, 19 Mar 2010 17:54:36 +0000 (13:54 -0400)]
classifer: Fix test classifier to match real classifier.
The trivial test classifier had the same bug as the real classifier
when replacing matching flows. This caused it to not find the
original bug and then break when the bug was fixed.
Jesse Gross [Fri, 19 Mar 2010 16:08:16 +0000 (12:08 -0400)]
classifier: Check all rules of equal priority when inserting.
When adding a new classifier rule we check if there is a rule
of the same priority first and overwrite it before inserting a
new rule. Previously we would stop looking if we found one rule
in the correct bucket with the same priority, even if it didn't
match. This keeps going until we either find a matching rule or
we run out of equal priority rules.
Justin Pettit [Sat, 13 Mar 2010 14:11:47 +0000 (06:11 -0800)]
xenserver: Make OVS xsconsole plugin configure management channel
Previously, the xsconsole plugin configured a single OpenFlow controller
configuration across all bridges. With the management channel, we can
now have the manager configure the bridges' controllers individually.
This changes the plugin to only set that management IP.
Justin Pettit [Sat, 13 Mar 2010 12:41:20 +0000 (04:41 -0800)]
xenserver: Remove support for setting different controllers for datapaths
A hack was put in a while back to support setting different controllers for
different datapaths by defining a "for-bridges" value in the
"vSwitchController" key. It is no longer necessary to do that with the
management protocol, since the manager can directly set controllers for
each datapath.