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NG_UBT(4)	       FreeBSD Kernel Interfaces Manual		     NG_UBT(4)

NAME
     ng_ubt -- Netgraph	node type that is also a driver	for Bluetooth USB
     devices

SYNOPSIS
     #include <sys/types.h>
     #include <netgraph/bluetooth/include/ng_ubt.h>

DESCRIPTION
     The ubt node type is both a persistent Netgraph node type and a driver
     for Bluetooth USB devices.	 It implements a Bluetooth USB transport layer
     as	per chapter H2 of the Bluetooth	Specification Book v1.1.  A new	node
     is	created	when a supported USB device is plugged in.

     The node has a single hook	called hook.  Incoming bytes received on the
     device are	re-assembled into HCI frames (according	to the length).	 Full
     HCI frames	are sent out on	the hook.  The node will add a HCI frame indi-
     cator if the device did not send it.  HCI frames received on hook are
     transmitted out.  The node	will drop the HCI frame	indicator unless the
     device requires it	to be present.

HARDWARE
     The ng_ubt	driver supports	all Bluetooth USB devices that conform with
     the Bluetooth specification v1.1, including:

     +o	 3Com 3CREB96
     +o	 AIPTEK	BR0R02
     +o	 EPoX BT-DG02
     +o	 Mitsumi Bluetooth USB adapter
     +o	 MSI MS-6967
     +o	 TDK Bluetooth USB adapter

HOOKS
     This node type supports the following hooks:

     hook    single HCI	frame contained	in a single mbuf structure.

CONTROL	MESSAGES
     This node type supports the generic control messages, plus	the following:

     NGM_UBT_NODE_GET_DEBUG
	     Returns an	integer	containing the current debug level for the
	     node.

     NGM_UBT_NODE_SET_DEBUG
	     This command takes	an integer argument and	sets the current debug
	     level for the node.

     NGM_UBT_NODE_GET_QLEN
	     This command takes	a parameter that specifies the queue number
	     and returns the current maximal length of the queue for the node.

     NGM_UBT_NODE_SET_QLEN
	     This command takes	two parameters that specify the	queue number
	     and the maximum length of the queue and sets the maximal length
	     of	the queue for the node.

     NGM_UBT_NODE_GET_STAT
	     Returns various statistic information for the node, such as: num-
	     ber of bytes (frames) sent, number	of bytes (frames) received and
	     number of input (output) errors.

     NGM_UBT_NODE_RESET_STAT
	     Reset all statistic counters to zero.

SHUTDOWN
     This node shuts down when the corresponding USB device is un-plugged.

SEE ALSO
     netgraph(4), ugen(4), usb(4), ngctl(8)

HISTORY
     The ubt node type was implemented in FreeBSD 5.0.

AUTHORS
     Maksim Yevmenkin <m_evmenkin@yahoo.com>

BUGS
     Isochronous USB transfers are broken.  This means that the	USB device
     will not be able to transfer SCO data (voice).  USB interrupt transfers
     are implemented as	bulk-in	transfers (not really a	bug).

FreeBSD	9.2		      September	13, 2004		   FreeBSD 9.2

NAME | SYNOPSIS | DESCRIPTION | HARDWARE | HOOKS | CONTROL MESSAGES | SHUTDOWN | SEE ALSO | HISTORY | AUTHORS | BUGS

Want to link to this manual page? Use this URL:
<http://www.freebsd.org/cgi/man.cgi?query=ng_ubt&sektion=4&manpath=FreeBSD+8.0-RELEASE>

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