ovs-vswitchd: Correct the documentation on the limits for bridges and ports.

Signed-off-by: Gurucharan Shetty <gshetty@nicira.com>
ovs-ctl.in: Increase the limit on file descriptors.

Testing shows that creation of 5000 internal ports and using it
to do some meaningful tasks works fine on a 12 cpu hardware.
Since a single port needs one file descriptor and a bridge
needs 3 file descriptors, we will have to increase the file
descriptor limit to a higher number from the current limit of 5000.
7500 feels like a decent increase with enough room for further
scale testing.

Bug #18383.
Signed-off-by: Gurucharan Shetty <gshetty@nicira.com>
Acked-by: Ben Pfaff <blp@nicira.com>
FAQ: Add supported kernel versions for newer OVS releases.

Reported-by: Kris zhang <zhang.kris@gmail.com>
Signed-off-by: Jesse Gross <jesse@nicira.com>
Acked-by: Pravin B Shelar <pshelar@nicira.com>
fatal-signal: Remove write-only variable fatal_signal_set.

Signed-off-by: Ben Pfaff <blp@nicira.com>
Acked-by: Ed Maste <emaste@freebsd.org>
timeval: New function xclock_gettime().

Signed-off-by: Ben Pfaff <blp@nicira.com>
Acked-by: Ed Maste <emaste@freebsd.org>
timeval: Remove backtrace feature.

The backtrace feature of timeval is useful because it provides a "poor
man's profile" view of Open vSwitch.  But it is not likely to be useful in
a multithreaded process, because signal delivery doesn't necessarily follow
the profile when there is more than one thread.  (A signal in a
multithreaded process are delivered to an arbitrary thread.)

Another problem with the backtrace feature is that it is difficult for
format_backtraces() to synchronize properly with the signal handler in a
multithreaded process.  In a single-threaded process, it can just block
the signal handler, but in a multithreaded process this does not prevent
signal delivery to threads other than the one running format_backtrace().

Signed-off-by: Ben Pfaff <blp@nicira.com>
Acked-by: Ed Maste <emaste@freebsd.org>
timeval: Fix typo in comment.

Signed-off-by: Ben Pfaff <blp@nicira.com>
Acked-by: Ed Maste <emaste@freebsd.org>
poll-loop: Fix typo in comment.

Signed-off-by: Ben Pfaff <blp@nicira.com>
Acked-by: Ed Maste <emaste@freebsd.org>
vlog: Remove support for worker process.

The worker process implementation isn't thread-safe and, once OVS
itself is threaded, it doesn't make much sense to have a worker
process anyway.

Signed-off-by: Ben Pfaff <blp@nicira.com>
Acked-by: Ed Maste <emaste@freebsd.org>
tests: Add ofproto-dpif push_vlan test

Signed-off-by: Joe Stringer <joe@wand.net.nz>
Signed-off-by: Ben Pfaff <blp@nicira.com>