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

NAME
     bluetooth -- placeholder for global Bluetooth variables

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

DESCRIPTION
     The 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 interger 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.	Normaly	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 con-
	     nection will stall	in case	when the HCI transport layer is	bro-
	     ken. Be careful when changing this	variable.  Make	sure you
	     understand	what you are doing.

     net.bluetooth.hci.watchdog_timeout
	     A read-write integer variable that	controls the HCI connection
	     watchdog timeout in seconds), i.e.	how long the HCI layer should
	     wait before disconnecting an inactive baseband connection.	 This
	     has not been implemented yet.

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

HISTORY
     The 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 | BLUETOOTH VARIABLES | SEE ALSO | HISTORY | AUTHORS

Want to link to this manual page? Use this URL:
<https://www.freebsd.org/cgi/man.cgi?query=ng_bluetooth&sektion=4&manpath=FreeBSD+5.0-RELEASE>

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