103 lines
3.8 KiB
Groff
103 lines
3.8 KiB
Groff
.\" Copyright (c) 2001-2002 Maksim Yevmenkin <m_evmenkin@yahoo.com>
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.\" All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" $FreeBSD$
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.\"
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.Dd June 14, 2002
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.Dt NG_UBT 4
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.Os
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.Sh NAME
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.Nm ng_ubt
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.Nd Netgraph node type that is also a driver for Bluetooth USB devices
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.Sh SYNOPSIS
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.In sys/types.h
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.In ng_ubt.h
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.Sh DESCRIPTION
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The
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.Nm ubt
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node type is both a persistent Netgraph node type and a driver for
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Bluetooth USB devices.
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It implements a Bluetooth USB transport layer
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as per chapter H2 of the Bluetooth Specification Book v1.1.
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A new node is created when supported USB device is plugged.
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.Pp
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The node has a single hook called
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.Dv hook .
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Incoming bytes received on the device are re-assembled into HCI frames
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(according to the length).
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Full HCI frames are sent out on the hook.
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The node will add HCI frame indicator if device did not send it.
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HCI frames received on
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.Dv hook
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are transmitted out.
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The node will drop HCI frame indicator unless device
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requires it to be present.
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.Sh HOOKS
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This node type supports the following hooks:
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.Bl -tag -width indent
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.It Dv hook
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single HCI frame contained in single
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.Vt mbuf
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structure.
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.El
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.Sh CONTROL MESSAGES
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This node type supports the generic control messages, plus the following:
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.Bl -tag -width indent
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.It Dv NGM_UBT_NODE_GET_DEBUG
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Returns an integer containing the current debug level for the node.
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.It Dv NGM_UBT_NODE_SET_DEBUG
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This command takes an integer argument and sets current debug level
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for the node.
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.It Dv NGM_UBT_NODE_GET_QLEN
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This command takes a parameter that specifies queue number and returns
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current maximal length of the queue for the node.
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.It Dv NGM_UBT_NODE_SET_QLEN
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This command takes two parameters that specify queue number and maximum
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length of the queue and sets maximal length of the queue for the node.
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.It Dv NGM_UBT_NODE_GET_STAT
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Returns various statistic information for the node, such as: number of
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bytes (frames) sent, number of bytes (frames) received and number of
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input (output) errors.
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.It Dv NGM_UBT_NODE_RESET_STAT
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Reset all statistic counters to zero.
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.El
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.Sh SHUTDOWN
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This node shuts down when the corresponding USB device is un-plugged.
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.Sh BUGS
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Isochronous USB transfers are probably broken.
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It means that USB device probably will not be able to transfer SCO data (voice).
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Driver does not support firmware upgrade procedure.
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USB interrupt transfers are implemented as bulk-in transfers (not really a bug).
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.Sh SEE ALSO
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.Xr netgraph 4 ,
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.Xr usb 4 ,
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.Xr ngctl 8
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.Sh HISTORY
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The
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.Nm ubt
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node type was implemented in
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.Fx 5.0 .
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.Sh AUTHORS
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.An Maksim Yevmenkin Aq m_evmenkin@yahoo.com
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