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NG_BLUETOOTH(4)	       FreeBSD Kernel Interfaces Manual	       NG_BLUETOOTH(4)

NAME
     ng_bluetooth -- placeholder for global Bluetooth variables

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

DESCRIPTION
     The ng_bluetooth module is	a placeholder for global Bluetooth variables.
     All Bluetooth variables can be examined and changed via sysctl(8).

   Bluetooth Variables
     Below is the description of default variables.  Each Bluetooth module
     might add its own variables to the	tree.

     net.bluetooth.version
	     A read-only integer variable that shows the current version of
	     the Bluetooth stack.

     net.bluetooth.hci.command_timeout
	     A read-write integer variable that	controls the Host Controller
	     Interface (HCI) command timeout (in seconds), i.e., how long the
	     HCI layer will wait for the Command_Complete or Command_Status
	     event from	a Bluetooth device.

     net.bluetooth.hci.connection_timeout
	     A read-write integer variable that	controls the HCI connection
	     timeout, i.e. how long the	HCI layer will wait for	the
	     Connection_Complete event.	 Normally this should not be required
	     as	Bluetooth devices have connection timeout of their own and
	     will send event back.  This timeout is required to	ensure that no
	     connection	will stall in case when	the HCI	transport layer	is
	     broken.  Be careful when changing this variable.  Make sure you
	     understand	what you are doing.

     net.bluetooth.hci.max_neighbor_age
	     A read-write integer variable that	controls time-to-live (in sec-
	     onds) for entries in the HCI neighbor cache.  Every time a	Blue-
	     tooth device performs an Inquiry operation, the results will be
	     put in cache.  Later when a Bluetooth device establishes a	base-
	     band connection, it will try to find the matching entry in	the
	     cache and use it.	This might speed up establishment of the base-
	     band connection.

     net.bluetooth.l2cap.rtx_timeout
	     A read-write integer variable that	controls the Link Layer	Con-
	     trol and Adaptation Protocol (L2CAP) Retransmission Timeout (RTX)
	     (in seconds).  Every time the L2CAP layer submits a control com-
	     mand, the RTX timeout is set.  The	value of the RTX timeout
	     should be greater or equal	to the value of	the HCI	connection
	     timeout.  Be careful when changing	this variable.	Make sure you
	     understand	what you are doing.

     net.bluetooth.l2cap.ertx_timeout
	     A read-write integer variable that	controls the L2CAP Extended
	     Retransmission Timeout (ERTX) (in seconds).  In some cases	remote
	     peer may respond with PENDING status to the L2CAP control com-
	     mand.  In this case the L2CAP command timeout is reset to the
	     ERTX timeout value.  The value of the ERTX	timeout	should be
	     greater or	equal to the value of the RTX timeout.	Be careful
	     when changing this	variable.  Make	sure you understand what you
	     are doing.

SEE ALSO
     ng_btsocket(4), ng_hci(4),	ng_l2cap(4), sysctl(8)

HISTORY
     The ng_bluetooth module was implemented in	FreeBSD	5.0.

AUTHORS
     Maksim Yevmenkin <m_evmenkin@yahoo.com>

FreeBSD	10.1		       November	9, 2002			  FreeBSD 10.1

NAME | SYNOPSIS | DESCRIPTION | SEE ALSO | HISTORY | AUTHORS

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<http://www.freebsd.org/cgi/man.cgi?query=ng_bluetooth&sektion=4&manpath=FreeBSD+7.4-RELEASE>

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