Remove $FreeBSD$: two-line nroff pattern

Remove /^\.\\"\n\.\\"\s*\$FreeBSD\$$\n/

etherswitch: Add a new striptagingress port flag

Felix switch found in LS1028A supports stripping VLAN tag on
ingress, instead of egress. The striptag flag excepts the latter
behaviour.
Add a new flag to support the feature.

Obtained from: Semihalf
Sponsored by: Alstom Group
Differential Revision: https://reviews.freebsd.org/D30922

Add the 'drop tagged' flag support for ethernet switch ports.

This is intended to drop all 802.1q tagged packets on a port.

Sponsored by: Rubicon Communications, LLC (Netgate)

Igor suggested moving sentence to new line.
Zap traililng whitespace.

PR: 212447
Approved by: bcr (mentor)
MFC after: 3 days
Differential Revision: https://reviews.freebsd.org/D8116

[etherswitch] add LED API to the documentation and command line tool.

Submitted by: Dan Nelson <dnelson_1901@yahoo.com>

Add a license (1) and do some cleanup.

Approved by: Stefan Bethke (original author, by private mail) (1)
MFC after: 1 week

Improve grammar and readability.

Reviewed by: sbruno, loos
Approved by: re (gjb)

Typo in strtol(3).

Noticed by: bde

mdoc: new sentence, new line.

Add vlan configuration support to etherswitchcfg.

This adds the support to the config keyword (vlan operation mode), ports
flags, prints the vlan mode and vlan capabilities. It also adds some basic
information to usage() and support the keyword 'help' as a shortcut to
usage(). The manual page is also updated with the new options.

Submitted by: Luiz Otavio O Souza <loos.br@gmail.com>
Reviewed by: ray

Convert over the etherswitch framework to use VLAN IDs per port, rather
than VLAN groups.

Some chips (eg this rtl8366rb) has a VLAN group per port - you first
define a set of VLANs in a vlan group, then you assign a VLAN group
to a port.

Other chips (eg the AR8xxx switch chips) have a VLAN ID array per
port - there's no group per se, just a list of vlans that can be
configured.

So for now, the switch API will use the latter and rely on drivers
doing the heavy lifting if one wishes to use the VLAN group method.
Maybe later on both can be supported.

PR: kern/177878
PR: kern/177873
Submitted by: Luiz Otavio O Souza <loos.br@gmail.com>
Reviewed by: ray

Fixes to man8 groff mandoc style, usage mistakes, or typos.

PR: 168016
Submitted by: Nobuyuki Koganemaru
Approved by: gjb
MFC after: 3 days

Remove end of line whitespace.

Add etherswitchcfg.

Submitted by: Stefan Bethke <stb@lassitu.de>