tests: Make test for Linux /proc/self/fd more straightforward.

Presumably we can test for this Linux feature just by seeing whether the
directory is there.

Another goal is to shorten the code because I intend to make another copy
of it in an upcoming commit, to add a similar test for Python.

Signed-off-by: Ben Pfaff <blp@nicira.com>
Acked-by: Ethan Jackson <ethan@nicira.com>
tests: Make long name more readable by introducing a shell variable.

Signed-off-by: Ben Pfaff <blp@nicira.com>
Acked-by: Ethan Jackson <ethan@nicira.com>
tests: Add test for Python version of long socket name workaround.

Signed-off-by: Ben Pfaff <blp@nicira.com>
Acked-by: Ethan Jackson <ethan@nicira.com>
ofproto-dpif: Move 'orig_flow' from action_xlate_ctx to local variable.

A comment said that this was necessary to silence a false-positive warning
from GCC 4.4.  However, it no longer triggers a warning for me, so enough
must have changed in the meantime to make GCC happy.

Signed-off-by: Ben Pfaff <blp@nicira.com>
FAQ: Add troubleshooting procedure and example.

Signed-off-by: Ben Pfaff <blp@nicira.com>
OPENFLOW-1.1+: Update.

This drops items that are done and fixes some screwed-up encoding.

Signed-off-by: Ben Pfaff <blp@nicira.com>
OPENFLOW-1.1+: Fix character encoding issues.

Signed-off-by: Ben Pfaff <blp@nicira.com>
vxlan: Add utility functions to the simap data structure.

Add utility functions to the simap structure. These are
used by future patches in this seris. The functions added are.

Signed-off-by: Kyle Mestery <kmestery@cisco.com>
Acked-by: Ethan Jackson <ethan@nicira.com>
Signed-off-by: Ben Pfaff <blp@nicira.com>
vxlan: Update netdev_vport_get_dpif_port() to support VXLAN port names

Modify netdev_vport_get_dpif_port() to return a name for
VXLAN ports which includes the destination UDP port number as a part of the
name.

Signed-off-by: Kyle Mestery <kmestery@cisco.com>
Acked-by: Ethan Jackson <ethan@nicira.com>
Signed-off-by: Ben Pfaff <blp@nicira.com>
Modify dpif_linux_port_add() to set the destination port for VXLAN ports.

Signed-off-by: Kyle Mestery <kmestery@cisco.com>
Acked-by: Ethan Jackson <ethan@nicira.com>
Signed-off-by: Ben Pfaff <blp@nicira.com>
vxlan: Change dpif_backer->tnl backer to a "struct simap"

Move dpif_backer->tnl_backers from a "struct sset" to a
"struct simap". Store odp_port in the new map.  This will make it easier to
access the odp_port for future patches.

Signed-off-by: Kyle Mestery <kmestery@cisco.com>
Acked-by: Ethan Jackson <ethan@nicira.com>
Signed-off-by: Ben Pfaff <blp@nicira.com>
rhel, xenserver: Make logrotate daily and compress old logs.

The default values can be different and usually comes from /etc/logrotate.conf.

For xenserver6.0.2, the values in /etc/logrotate.conf is daily and compress.
So this patch does not make any difference. But it does future proof against
any changes in xenserver in the future.

For rhel6.1, the values are weekly and un-compress.

Signed-off-by: Gurucharan Shetty <gshetty@nicira.com>
ovs-bugtool: Provide a separate capability to openvswitch logs.

Currently we have a 50 MB size limitation for all logs. This looks
quite less because a single uncompressed log can be 50 MB which
will result in ovs-bugtool picking a single log.

While debugging issues related to openvswitch, it is important that
we have all logs related to openvswitch atleast. This patch provides
a new capability for openvswitch logs with no size limitation. This
should not be a problem since compression reduces the size of the logs
quite a bit.

Also increase the size limitation for the regular system logs to 200 MB.

A future commit adds an option '--log-days' to control the number of logs
that we collect.

Signed-off-by: Gurucharan Shetty <gshetty@nicira.com>
ovs-bugtool: Ability to collect the number of rotated logs.

A big reason for a large debug bundle size is the size of log
files. By default we collect 20 rotated logs for each logfile.
Most of the times we collect the debug bundle as soon as we
hit a bug. In such cases, we know that we need only one day's
worth of logs.

This patch adds an option, '--log-days' to ovs-bugtool wherein
we can specify how many days worth of rotated logs do we need
as part of the debug bundle.

Signed-off-by: Gurucharan Shetty <gshetty@nicira.com>
ovs-bugtool: Don't run a few ethtool commands on virtual devices.

There can be a few hundred virtual interfaces in a hypervisor.
Some of the ethtool commands that we currently run on these devices
probably does not provide any extra information. So remove them
for tap and vif interfaces.

Also bump up the size limitation for CAP_NETWORK_STATUS. The
current value is quite low and a 50 MB limit pre-compression
does not add much to the overall size.

Signed-off-by: Gurucharan Shetty <gshetty@nicira.com>
ovs-bugtool: Change the default output type.

In my tests, I see that creating a tar.gz takes a lot less
time than creating a tar.bz2. The difference in compressed
size of the debug bundle is not much different when either
of the above is used. So, use tar.gz as the default debug
bundle type.

Test results in my setup:
For an uncompressed debug bundle size of 250MB(95% of it is log files),
bz2 takes 50 seconds whereas gz takes 8 seconds. xz took 90 seconds.
gz, bz2 and xz compressed the debug bundle into 144M, 139M and 131M
respectively.

Signed-off-by: Gurucharan Shetty <gshetty@nicira.com>
ovs-bugtool: Remove unused code and nonrequired commands.

There is some code that is unused and some commands whose
output we probably don't need to debug openvswitch issues.

Signed-off-by: Gurucharan Shetty <gshetty@nicira.com>
xenserver: Include ovs-bugtool in xenserver rpm.

Currently we do not include ovs-bugtool in xenserver rpms.
This is because xen-bugtool provides the information required
to debug openvswitch. But xen-bugtool also provides a lot more
data that is not required for openvswitch debugging. This makes
the debug bundle quite huge.

Also, xen-bugtool takes a lot of time to collect the required
information.  For example, in my xenserver6.0.2 with 100 OVS
interfaces, 'xen-bugtool -y -s' takes 180 seconds to finish
creating a debug bundle with a size of 124M.

On the other hand, if we run a ovs-bugtool command of the form
'ovs-bugtool -y -s --log-days=10 --outfile bundle.tar.gz', it
takes 5 seconds to finish with a debug bundle size of 28M.

Signed-off-by: Gurucharan Shetty <gshetty@nicira.com>
datapath: Call genlmsg_end in queue_userspace_packet

Without genlmsg_end the upcall message ends (according to nlmsg_len) after the
struct ovs_header.

Signed-off-by: Rich Lane <rlane@bigswitch.com>
Signed-off-by: Jesse Gross <jesse@nicira.com>
dpif-linux: Fix byte-swapping direction in nl_msg_put_u16() call.

OVS_TUNNEL_ATTR_DST_PORT expects a u16, tnl_cfg->dst_port is a be16, so
we want ntohs() instead of htons().

In practice htons() and ntohs() perform the same operation, so this does
not fix a real bug.

Found by sparse.

Signed-off-by: Ben Pfaff <blp@nicira.com>