bluetooth: complete removal of ng_h4

The ng_h4 module was disconnected 13 years ago when the tty later was
locked by Ed. It completely fails to compile, and has a number of false
positives for Giant use. Remove it for lack of interest. Bluetooth has
largely (completely?) moved on from bluetooth over UART transport.

OK'd by:		emax
Sponsored by:		Netflix
Differential Revision:	https://reviews.freebsd.org/D31846

3 files changed, 1 insertions, 126 deletions

diff --git a/share/man/man4/Makefile b/share/man/man4/Makefile
index 4dad9b11ec22..421de8728a05 100644
--- a/share/man/man4/Makefile
+++ b/share/man/man4/Makefile
@@ -353,7 +353,6 @@ MAN=	aac.4 \
 	ng_frame_relay.4 \
 	ng_gif.4 \
 	ng_gif_demux.4 \
-	ng_h4.4 \
 	ng_hci.4 \
 	ng_hole.4 \
 	ng_hub.4 \
diff --git a/share/man/man4/netgraph.4 b/share/man/man4/netgraph.4
index 6b850e27762a..bed412193f6b 100644
--- a/share/man/man4/netgraph.4
+++ b/share/man/man4/netgraph.4
@@ -36,7 +36,7 @@
 .\" $Whistle: netgraph.4,v 1.7 1999/01/28 23:54:52 julian Exp $
 .\" $FreeBSD$
 .\"
-.Dd January 9, 2021
+.Dd September 29, 2021
 .Dt NETGRAPH 4
 .Os
 .Sh NAME
@@ -1433,7 +1433,6 @@ common networking problems, solved using
 .Xr ng_frame_relay 4 ,
 .Xr ng_gif 4 ,
 .Xr ng_gif_demux 4 ,
-.Xr ng_h4 4 ,
 .Xr ng_hci 4 ,
 .Xr ng_hole 4 ,
 .Xr ng_hub 4 ,
diff --git a/share/man/man4/ng_h4.4 b/share/man/man4/ng_h4.4
deleted file mode 100644
index bb539a230eba..000000000000
--- a/share/man/man4/ng_h4.4
+++ /dev/null
@@ -1,123 +0,0 @@
-.\" Copyright (c) 2001-2002 Maksim Yevmenkin <m_evmenkin@yahoo.com>
-.\" All rights reserved.
-.\"
-.\" Redistribution and use in source and binary forms, with or without
-.\" modification, are permitted provided that the following conditions
-.\" are met:
-.\" 1. Redistributions of source code must retain the above copyright
-.\"    notice, this list of conditions and the following disclaimer.
-.\" 2. Redistributions in binary form must reproduce the above copyright
-.\"    notice, this list of conditions and the following disclaimer in the
-.\"    documentation and/or other materials provided with the distribution.
-.\"
-.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
-.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
-.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
-.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
-.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
-.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
-.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
-.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
-.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
-.\" SUCH DAMAGE.
-.\"
-.\" $Id: ng_h4.4,v 1.2 2003/05/21 19:37:35 max Exp $
-.\" $FreeBSD$
-.\"
-.Dd June 14, 2002
-.Dt NG_H4 4
-.Os
-.Sh NAME
-.Nm ng_h4
-.Nd Netgraph node type that is also an H4 line discipline
-.Sh SYNOPSIS
-.In sys/types.h
-.In netgraph/bluetooth/include/ng_h4.h
-.Sh DESCRIPTION
-The
-.Nm h4
-node type is both a persistent Netgraph node type and a H4 line
-discipline.
-It implements a Bluetooth HCI UART transport layer as
-per chapter H4 of the Bluetooth Specification Book v1.1.
-A new node is created when the corresponding line discipline,
-.Dv H4DISC ,
-is registered on a tty device (see
-.Xr tty 4 ) .
-.Pp
-The node has a single hook called
-.Dv hook .
-Incoming bytes received on the tty device are re-assembled into
-HCI frames (according to the length).
-Full HCI frames are sent out on the hook.
-HCI frames received on
-.Dv hook
-are transmitted out on the tty device.
-No modification to the data is performed in either direction.
-While the line discipline is installed on a tty, the normal
-read and write operations are unavailable, returning
-.Er EIO .
-.Pp
-Information about the node is available via the netgraph
-.Xr ioctl 2
-command
-.Dv NGIOCGINFO .
-This command returns a
-.Vt "struct nodeinfo"
-similar to the
-.Dv NGM_NODEINFO
-.Xr netgraph 4
-control message.
-.Sh HOOKS
-This node type supports the following hooks:
-.Bl -tag -width ".Va hook"
-.It Va hook
-single HCI frame contained in single
-.Vt mbuf
-structure.
-.El
-.Sh CONTROL MESSAGES
-This node type supports the generic control messages, plus the following:
-.Bl -tag -width foo
-.It Dv NGM_H4_NODE_RESET
-Reset the node.
-.It Dv NGM_H4_NODE_GET_STATE
-Returns current receiving state for the node.
-.It Dv NGM_H4_NODE_GET_DEBUG
-Returns an integer containing the current debug level for the node.
-.It Dv NGM_H4_NODE_SET_DEBUG
-This command takes an integer argument and sets current debug level
-for the node.
-.It Dv NGM_H4_NODE_GET_QLEN
-Returns current length of outgoing queue for the node.
-.It Dv NGM_H4_NODE_SET_QLEN
-This command takes an integer argument and sets maximum length of
-outgoing queue for the node.
-.It Dv NGM_H4_NODE_GET_STAT
-Returns various statistic information for the node, such as: number of
-bytes (frames) sent, number of bytes (frames) received and number of
-input (output) errors.
-.It Dv NGM_H4_NODE_RESET_STAT
-Reset all statistic counters to zero.
-.El
-.Sh SHUTDOWN
-This node shuts down when the corresponding device is closed
-(or the line discipline is uninstalled on the device).
-.Sh SEE ALSO
-.Xr ioctl 2 ,
-.Xr netgraph 4 ,
-.Xr tty 4 ,
-.Xr ngctl 8
-.Sh HISTORY
-The
-.Nm h4
-node type was implemented in
-.Fx 5.0 .
-.Sh AUTHORS
-.An Maksim Yevmenkin Aq Mt m_evmenkin@yahoo.com
-.Sh BUGS
-This node still uses
-.Xr spltty 9
-to lock tty layer.
-This is wrong.