The linux-2.6 and compat-2.6 directories apply equally to the upcoming
Linux 3.0 release, so this drops the 2.6 suffix and updates Makefiles.
Signed-off-by: Jesse Gross <jesse@nicira.com>
Acked-by: Ben Pfaff <blp@nicira.com>
Some Linux network drivers support a feature called "VLAN acceleration",
associated with a data structure called a "vlan_group". A vlan_group is,
abstractly, a dictionary that maps from a VLAN ID (in the range 0...4095)
to a VLAN device, that is, a Linux network device associated with a
particular VLAN, e.g. "eth0.9" for VLAN 9 on eth0.
Some drivers that support VLAN acceleration have bugs that fall roughly
into the following categories:
* Some NICs strip VLAN tags on receive if no vlan_group is registered,
so that the tag is completely lost.
* Some drivers size their receive buffers based on whether a vlan_group
is enabled, meaning that a maximum size packet with a VLAN tag will
not fit if a vlan_group is not configured.
* On transmit some drivers expect that VLAN acceleration will be used
if it is available (which can only be done if a vlan_group is
configured). In these cases, the driver may fail to parse the packet
and correctly setup checksum offloading and/or TSO.
The correct long term solution is to fix these driver bugs. To cope until
then, we have prepared a patch to the Linux kernel network stack that works
around these problems. This commit adds support for the workaround
implemented by that patch.
Signed-off-by: Ben Pfaff <blp@nicira.com>
Acked-by: Jesse Gross <jesse@nicira.com>
We had retained but deprecated the use of the older 'managers' column in the
'Open vSwitch' table for compatibility with applications that might still use
it, but that created more problems than it solved. This commit removes the
'managers' column from the schema, and removes all references to it from the
code, init scripts, documentation, and tests.
Citrix have made modifications to the various interface configuration scripts
that OVS replaces, so at present those modifications are lost when OVS is
installed on e.g. XenServer 5.6.100. This commit applies those changes while
preserving OVS-specific modifications that have been made in the interim.
One major change introduced by these updates is the removal of support for
XenServer releases prior to 5.6.100.
This commit also updates the OVS-supplied xen-bugtool in similar fashion. We
will soon remove xen-bugtool from OVS altogether and move the added OVS
functionality to an XML extension as described in the Supplemental Pack DDK
guide.
Our Debian and XenServer packages use /etc/openvswitch/conf.db as the
location for the database but some of the docs suggested
/etc/ovs-vswitchd.conf.db. This settles on the former consistently.
The manpage is still ovs-vswitchd.conf.db but I don't know what to do
about that.
We currently perform GSO on packets before adding a vlan tag,
which is reliable but hurts performance. Even NICs that support
TSO on vlan tagged packets typically expect vlan acceleration to
be used. Before 2.6.37 we can't use vlan acceleration and must
place the tag in the packet itself, which is risky when used with
TSO. However, if the driver is known to work with internally
tagged packets and TSO this exposes a module parameter to enable it.
Signed-off-by: Jesse Gross <jesse@nicira.com>
Acked-by: Ben Pfaff <blp@nicira.com>
pkg-config is needed to detect the presence of libssl, so it is needed even
if the build system doesn't need to be rebuilt.
In theory we'd only need pkg-config if OpenSSL is to be used, but I don't
see much point in being that explicit.
Reported-by: Bryan Osoro <bosoro@nicira.com>
For a while the Debian packages were not well maintained or regularly used,
but we at Nicira use them all the time now. We now aim to have them
accepted into Debian downstream, so we should at least not discourage
users from trying them out.
Signed-off-by: Ben Pfaff <blp@nicira.com>
Years ago some users had broken OpenSSL libraries that didn't actually
work, so we disabled OpenSSL by default. By now, I hope that those users
have fixed their systems.
ovsdb-server should ordinarily connect to managers specified in the
database itself, as well as use the SSL configuration specified in the
database, but the suggested ovsdb-server command line didn't do that.
This commit adds all the relevant arguments that the XenServer integration
passes by default.
Reported-by: Hao Zheng <hzheng@nicira.com>
DarkBls <darkbls@yahoo.com> had the idea that a single ovsdb-server could
be used to serve configuration details across the network to multiple
remote ovs-vswitchd instances. This doesn't work, but the documentation
didn't spell it out. This commit should help.
Add guards to check whether IPv6 is supported by the kernel instead
of causing the module to fail to load. If IPv6 is not supported
these packets can still be encapsulated but they will not receive any
special treatment such as path MTU discovery.
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.
The documentation was inconsistent about assuming whether the installation
was to / or to /usr/local. Since the default is /usr/local, use that.
Reported-by: Jeongkeun Lee <jklee@hp.com>
Our configure scripts were actually using Autoconf features introduced in
version 2.64 (e.g. AT_SKIP_IF, AT_CHECK_UNQUOTED), so we should not
claim 2.63 as prerequisite.
Reported-by: Andy Southgate <andy.southgate@citrix.com>
The Xen DDK VM does not include Python, so it's best if we don't have to
require it for the build.
The built sources are still regenerated if necessary.
It is inconvenient to type the whole path to the Unix daemon socket when
using ovs-appctl. Allow the name of the daemon to be used instead when
a pidfile exists in the default location, and contact ovs-vswitchd by
default.
Also, the various options for manipulating vlog were invented before the
general-purpose command mechanism existed. Get rid of all of the action
options in favor of just specifying the command to be executed as
non-option arguments.
Finally, there simply wasn't much value in allowing multiple targets or
options to be specified; these variations were never used in practice. So
simplify the interface by making it one target, one action per invocation.
Also, make ovs-vsctl use the same syntax for its --target option.
Based on work by Justin Pettit.
When the sources are pulled directly from Git, it is necessary to run
"./boot.sh" before "./configure" can be run. This commit documents that
useful bit of information.
We've gone through a couple of iterations for names of these mailing
lists. Currently, there are three: announce, discuss, and git. There
are aliases that point "bugs" and "dev" to the "discuss" mailing list.
This commit drops the "ovs-" prefix to mailing lists, since we're not
using them.
