Copy head@r302406 to stable/11 as part of the 11.0-RELEASE cycle.
Prune svn:mergeinfo from the new branch, as nothing has been merged
here.

Additional commits post-branch will follow.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

[wlanstats] Convert rssi / signal / rate to use float.

* Convert rssi/signal/rate to be a single digit precision float
* rssi is actually in 1/2 dBm units, so divide it by 2

[net80211] teach wlanstats about the ff_encapfail field.

Without this it just displays a blank, short column which is just
plainly not useful.

- Replace N(a)/N(i)/N(T)/LEN(a)/ARRAY_SIZE(a) with nitems()
- Add missing <err.h> for err() and <sys/sysctl.h> for sysctlbyname()
- NULL -> 0 for 5th parameter of sysctlbyname()

Submitted by: Andriy Voskoboinyk <s3erios@gmail com>
Differential Revision: https://reviews.freebsd.org/D3442

Modify wlanstats to now use the copy of libbsdstat in /usr/lib/private.

Teach wlanstats about the new BAR TX statistics.

Add is_beacon_bad.

PR: kern/165517

update for recent mesh additions

Approved by: re (kib)

Implementation of the upcoming Wireless Mesh standard, 802.11s, on the
net80211 wireless stack. This work is based on the March 2009 D3.0 draft
standard. This standard is expected to become final next year.
This includes two main net80211 modules, ieee80211_mesh.c
which deals with peer link management, link metric calculation,
routing table control and mesh configuration and ieee80211_hwmp.c
which deals with the actually routing process on the mesh network.
HWMP is the mandatory routing protocol on by the mesh standard, but
others, such as RA-OLSR, can be implemented.

Authentication and encryption are not implemented.

There are several scripts under tools/tools/net80211/scripts that can be
used to test different mesh network topologies and they also teach you
how to setup a mesh vap (for the impatient: ifconfig wlan0 create
wlandev ... wlanmode mesh).

A new build option is available: IEEE80211_SUPPORT_MESH and it's enabled
by default on GENERIC kernels for i386, amd64, sparc64 and pc98.

Drivers that support mesh networks right now are: ath, ral and mwl.

More information at: http://wiki.freebsd.org/WifiMesh

Please note that this work is experimental. Also, please note that
bridging a mesh vap with another network interface is not yet supported.

Many thanks to the FreeBSD Foundation for sponsoring this project and to
Sam Leffler for his support.
Also, I would like to thank Gateworks Corporation for sending me a
Cambria board which was used during the development of this project.

Reviewed by: sam
Approved by: re (kensmith)
Obtained from: projects/mesh11s

for adhoc and ahdemo modes try to find the "bss node": use the bssid
unless it's not setup or zero's; this may not work as the bssid of
the ibss isn't certain to the "right mac address" but for many cases
it is

o fix identification of ahdemo mode
o split out code to get the bssid for use in the future
o include more information in error diags when unable to collect sta info/stats

o add indirect array for field indices as the # stats is > 127 and doesn't
fit in a signed char
o change default output to something more useful for sta mode
o futz w/ various field names and widths; need to do full pass over this stuff

update for vaps

Supported by: Hobnob

update copyright's

o sync w/ net80211 changes
o redo numbering scheme to simplify changing the table

add 11n stats

checkpoint new version

fix include path

o move programs to separate directories and use stock Makefiles;
this simplifies including them in crunchgen images
o rename 80211* programs to wlan* as was originally intended