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111
share/man/man4/ng_bluetooth.4
View File

@ -1,8 +1,6 @@
.\" ng_bluetooth.4
.\"
.\" 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:
@ -11,7 +9,7 @@
.\" 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
@ -23,86 +21,97 @@
.\" 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_bluetooth.4,v 1.2 2002/11/12 22:14:10 max Exp $
.\"
.\" $FreeBSD$
.\"
.Dd November 9, 2002
.Dt NG_BLUETOOTH 4
.Os
.Sh NAME
.Nm bluetooth
.Nm ng_bluetooth
.Nd placeholder for global Bluetooth variables
.Sh SYNOPSIS
.In sys/types.h
.In ng_bluetooth.h
.Sh DESCRIPTION
The
.Nm
module is a placeholder for global Bluetooth variables. All Bluetooth
variables can be examined and changed via
.Nm
module is a placeholder for global Bluetooth variables.
All Bluetooth variables can be examined and changed via
.Xr sysctl 8 .
.Sh BLUETOOTH VARIABLES
Below is the description of default variables. Each Bluetooth module
might add its own variables to the tree.
.Bl -tag -width foobar
.It net.bluetooth.version
A read only integer variable that shows the current version of the
.Ss Bluetooth Variables
Below is the description of default variables.
Each Bluetooth module might add its own variables to the tree.
.Bl -tag -width indent
.It Va net.bluetooth.version
A read-only integer variable that shows the current version of the
Bluetooth stack.
.It net.bluetooth.hci.command_timeout
.It Va 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
(HCI) command timeout (in seconds), i.e. how long the HCI layer will wait
for the
.Dv Command_Complete
or
.Dv Command_Status
event from a Bluetooth device.
.It 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
.It Va 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
.Dv 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 connection will stall in case when the HCI
transport layer is broken. Be careful when changing this variable.
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 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.
.It net.bluetooth.hci.watchdog_timeout
.It Va 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
timeout in seconds), i.e. how long the HCI layer should wait before
disconnecting an inactive baseband connection.
.Em This has not been implemented yet .
.It net.bluetooth.hci.max_neighbor_age
.Bf -emphasis
This has not been implemented yet.
.Ef
.It Va net.bluetooth.hci.max_neighbor_age
A read-write integer variable that controls time-to-live (in seconds) for
entries in the HCI neighbor cache. Every time a Bluetooth device performs
an
entries in the HCI neighbor cache.
Every time a Bluetooth device performs an
.Dv Inquiry
operation, the results will be put in cache. Later when a Bluetooth device
establishes a baseband connection, it will try to find the matching entry in
the cache and use it. This might speed up establishment of the baseband
operation, the results will be put in cache.
Later when a Bluetooth device
establishes a baseband connection, it will try to find the matching entry in
the cache and use it.
This might speed up establishment of the baseband
connection.
.It net.bluetooth.l2cap.rtx_timeout
A read-write integer variable that controls the Link Layer Control and
Adaptation Protocol (L2CAP) Retransmission Timeout (RTX) (in seconds).
Every time the L2CAP layer submits a control command, 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.
.It 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
.It Va net.bluetooth.l2cap.rtx_timeout
A read-write integer variable that controls the Link Layer Control and
Adaptation Protocol (L2CAP) Retransmission Timeout (RTX) (in seconds).
Every time the L2CAP layer submits a control command, 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.
.It Va 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
.Dv PENDING
status to the L2CAP control command. 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.
status to the L2CAP control command.
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.
.El
.Sh SEE ALSO
.Xr sysctl 8 ,
.Xr ng_btsocket 4 ,
.Xr ng_hci 4 ,
.Xr ng_l2cap 4 ,
.Xr ng_btsocket 4
.Xr sysctl 8
.Sh HISTORY
The
.Nm
.Nm
module was implemented in
.Fx 5.0 .
.Sh AUTHORS

88
share/man/man4/ng_bt3c.4
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@ -1,8 +1,6 @@
.\" ng_bt3c.4
.\"
.\" 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:
@ -11,7 +9,7 @@
.\" 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
@ -23,40 +21,46 @@
.\" 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_bt3c.4,v 1.3 2002/11/12 17:03:58 max Exp $
.\"
.\" $FreeBSD$
.\"
.Dd June 14, 2002
.Dt NG_BT3C 4
.Os
.Sh NAME
.Nm BTCCC
.Nm ng_bt3c
.Nd Netgraph node type that is also a 3Com Bluetooth PC card driver
.Sh SYNOPSIS
.In sys/types.h
.In ng_bt3c.h
.Sh DESCRIPTION
The
.Nm BTCCC
.Nm btccc
node type is both a persistent Netgraph node type and a driver for
3Com Bluetooth PC card (3CRWB6096-HP). It implements a Bluetooth HCI
3Com Bluetooth PC card (3CRWB6096-HP).
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 card is plugged.
Book v1.1.
A new node is created when the card is plugged.
.Pp
In order to use the card one
.Em MUST
download firmware first. Due to copyright issues I will no longer
provide firmware with the driver. The firmware can be obtained
from the Windows driver package that can be downloaded from the 3COM web
site at no charge. The firmware name is BT3CPCC.BIN. To load firmware
info the card use
download firmware first.
Due to copyright issues I will no longer provide firmware with the driver.
The firmware can be obtained
from the Windows driver package that can be downloaded from the 3COM web
site at no charge.
The firmware name is
.Pa BT3CPCC.BIN .
To load firmware into the card, use
.Xr bt3cfw 8 .
I'm using original firmware that came with the card on CD-ROM.
.Bd -literal -offset indent
MD5 (BT3CPCC.BIN) = 36170fda56ea9fdbf1702c966f8a97f1
.Ed
I am using original firmware that came with the card on CD-ROM.
.Pp
For OLDCARD systems the entry in
.Dl "MD5 (BT3CPCC.BIN) = 36170fda56ea9fdbf1702c966f8a97f1"
.Pp
For
.Pa OLDCARD
systems the entry in
.Xr pccard.conf 5
might look like this
.Bd -literal -offset indent
@ -66,29 +70,30 @@ card "3COM" "3CRWB60-A" "Bluetooth PC Card"
insert /usr/sbin/bt3cfw -n $device -f /etc/BT3CPCC.bin
.Ed
.Pp
Do not forget to load module and SIGHUP
Do not forget to load module and
.Dv SIGHUP
.Xr pccardd 8 .
.Pp
The node has a single hook called
.Dv 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. HCI
frames received on
(according to the length).
Full HCI frames are sent out on the hook.
HCI frames received on
.Dv hook
are transmitted out. No modification to the data is performed in
either direction.
are transmitted out.
No modification to the data is performed in either direction.
.Sh HOOKS
This node type supports the following hooks:
.Pp
.Bl -tag -width foobar
.Bl -tag -width indent
.It Dv hook
single HCI frame contained in single
.Dv mbuf
.Vt mbuf
structure.
.El
.Sh CONTROL MESSAGES
This node type supports the generic control messages, plus the following:
.Bl -tag -width foo
.Bl -tag -width indent
.It Dv NGM_BT3C_NODE_GET_STATE
Returns current receiving state for the node.
.It Dv NGM_BT3C_NODE_GET_DEBUG
@ -97,15 +102,15 @@ Returns an integer containing the current debug level for the node.
This command takes an integer argument and sets current debug level
for the node.
.It Dv NGM_BT3C_NODE_GET_QLEN
This command takes a parameter that specifies queue number and returns
This command takes a parameter that specifies queue number and returns
current length of the queue for the node.
.It Dv NGM_BT3C_NODE_SET_QLEN
This command takes two parameters that specify queue number and and
maximum length of the queue and sets maximum length of the queue for
This command takes two parameters that specify queue number and and
maximum length of the queue and sets maximum length of the queue for
the node.
.It Dv NGM_BT3C_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
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_BT3C_NODE_RESET_STAT
Reset all statistic counters to zero.
@ -115,21 +120,22 @@ Download card firmware.
.Sh SHUTDOWN
This node shuts down when the corresponding card is un-plugged.
.Sh BUGS
The driver is based on information obrained from Jose Orlando Pereira
<jop@di.uminho.pt> and disassembled W2K driver.
The driver is based on information obtained from
.An Jose Orlando Pereira Aq jop@di.uminho.pt
and disassembled W2K driver.
.Sh SEE ALSO
.Xr cardbus 4 ,
.Xr netgraph 4 ,
.Xr pccbb 4 ,
.Xr pcic 4 ,
.Xr pccardc 8 ,
.Xr pccardd 8 ,
.Xr pccard.conf 5 ,
.Xr netgraph 4 ,
.Xr bt3cfw 8 ,
.Xr ngctl 8 ,
.Xr bt3cfw 8
.Xr pccardc 8 ,
.Xr pccardd 8
.Sh HISTORY
The
.Nm BTCCC
.Nm btccc
node type was implemented in
.Fx 5.0 .
.Sh AUTHORS

166
share/man/man4/ng_btsocket.4
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@ -1,5 +1,3 @@
.\" ng_btsocket.4
.\"
.\" Copyright (c) 2001-2002 Maksim Yevmenkin <m_evmenkin@yahoo.com>
.\" All rights reserved.
.\"
@ -24,13 +22,13 @@
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
.\" $Id: ng_btsocket.4,v 1.4 2002/11/12 22:31:39 max Exp $
.\" $FreeBSD$
.\"
.Dd July 8, 2002
.Dt NG_BTSOCKET 4
.Os
.Sh NAME
.Nm btsocket
.Nm ng_btsocket
.Nd Bluetooth sockets layer
.Sh SYNOPSIS
.In sys/types.h
@ -43,23 +41,23 @@
.Sh DESCRIPTION
The
.Nm
module implements three Netgraph node types. Each type in its turn implements
one protocol within
module implements three Netgraph node types.
Each type in its turn implements one protocol within
.Dv PF_BLUETOOTH
domain.
.Pp
.Sh BLUETOOTH_PROTO_HCI protocol
.Ss SOCK_RAW HCI sockets
.Sh Dv BLUETOOTH_PROTO_HCI Sh protocol
.Ss Dv SOCK_RAW Ss HCI sockets
Implemented by
.Cm btsock_hci_raw
Netgraph type. Raw HCI sockets allow sending of raw HCI command datagrams
.Nm btsock_hci_raw
Netgraph type.
Raw HCI sockets allow sending of raw HCI command datagrams
only to correspondents named in
.Xr send 2
calls. Raw HCI datagrams (HCI commands, events and data) are generally
received with
calls.
Raw HCI datagrams (HCI commands, events and data) are generally received with
.Xr recvfrom 2 ,
which returns the next datagram with its return address. Also raw HCI
sockets can be used to control HCI nodes.
which returns the next datagram with its return address.
Raw HCI sockets can also be used to control HCI nodes.
.Pp
The Bluetooth raw HCI socket address is defined as follows:
.Bd -literal -offset indent
@ -71,14 +69,14 @@ struct sockaddr_hci {
};
.Ed
.Pp
Raw HCI sockets support number of
.Xr ioctl 2
Raw HCI sockets support number of
.Xr ioctl 2
requests such as:
.Bl -tag -width foo
.Bl -tag -width indent
.It Dv SIOC_HCI_RAW_NODE_GET_STATE
Returns current state for the HCI node.
.It Dv SIOC_HCI_RAW_NODE_INIT
Turn on
Turn on
.Dq inited
bit for the HCI node.
.It Dv SIOC_HCI_RAW_NODE_GET_DEBUG
@ -112,9 +110,10 @@ Returns current packet mask for the HCI node.
Sets current packet mask for the HCI node.
.El
.Pp
Raw HCI sockets support filters. The application can filter certain
HCI datagram types. For HCI event datagrams the application can set
additional filter. The raw HCI socket filter defined as follows:
Raw HCI sockets support filters.
The application can filter certain HCI datagram types.
For HCI event datagrams the application can set additional filter.
The raw HCI socket filter defined as follows:
.Bd -literal -offset indent
/*
* Raw HCI socket filter.
@ -129,17 +128,16 @@ struct ng_btsocket_hci_raw_filter {
};
.Ed
.Pp
The
The
.Dv SO_HCI_RAW_FILTER
option defined at
.Dv SOL_HCI_RAW
.Dv SOL_HCI_RAW
level can be used to obtain via
.Xr getsockopt 2
or change via
.Xr setsockopt 2
or change via
.Xr setsockopt 2
raw HCI socket's filter.
.Pp
.Sh BLUETOOTH_PROTO_L2CAP protocol
.Sh Dv BLUETOOTH_PROTO_L2CAP Sh protocol
The Bluetooth L2CAP socket address is defined as follows:
.Bd -literal -offset indent
/* Bluetooth version of struct sockaddr for L2CAP sockets */
@ -150,19 +148,23 @@ struct sockaddr_l2cap {
bdaddr_t l2cap_bdaddr; /* address */
};
.Ed
.Pp
.Ss SOCK_RAW L2CAP sockets
.Ss Dv SOCK_RAW Ss L2CAP sockets
Implemented by
.Cm btsock_l2c_raw
.Nm btsock_l2c_raw
Netgraph type.
Raw L2CAP sockets do not provide access to raw L2CAP datagrams. These
sockets used to control L2CAP nodes and to issue special L2CAP requests
such as ECHO_REQUEST and GET_INFO request.
Raw L2CAP sockets do not provide access to raw L2CAP datagrams.
These
sockets used to control L2CAP nodes and to issue special L2CAP requests
such as
.Dv ECHO_REQUEST
and
.Dv GET_INFO
request.
.Pp
Raw L2CAP sockets support number of
.Xr ioctl 2
Raw L2CAP sockets support number of
.Xr ioctl 2
requests such as:
.Bl -tag -width foo
.Bl -tag -width indent
.It Dv SIOC_L2CAP_NODE_GET_FLAGS
Returns current state for the L2CAP node.
.It Dv SIOC_L2CAP_NODE_GET_DEBUG
@ -175,81 +177,97 @@ node.
.It Dv SIOC_L2CAP_NODE_GET_CHAN_LIST
Returns list of active channels for the L2CAP node.
.It Dv SIOC_L2CAP_L2CA_PING
Issues L2CAP ECHO_REQUEST.
Issues L2CAP
.Dv ECHO_REQUEST .
.It Dv SIOC_L2CAP_L2CA_GET_INFO
Issues L2CAP GET_INFO request.
Issues L2CAP
.Dv GET_INFO
request.
.El
.Pp
.Ss SOCK_SEQPACKET L2CAP sockets
.Ss Dv SOCK_SEQPACKET Ss L2CAP sockets
Implemented by
.Cm btsock_l2c
.Nm btsock_l2c
Netgraph type.
L2CAP sockets are either
L2CAP sockets are either
.Dq active
or
.Dq passive .
Active sockets initiate connections to passive sockets. By default L2CAP
sockets are created active; to create a passive socket the
Active sockets initiate connections to passive sockets.
By default L2CAP sockets are created active; to create a passive socket the
.Xr listen 2
system call must be used after binding the socket with the
system call must be used after binding the socket with the
.Xr bind 2
system call. Only passive sockets may use the
.Xr accept 2
call to accept incoming connections. Only active sockets may use the
.Xr connect 2
call to initiate connections.
system call.
Only passive sockets may use the
.Xr accept 2
call to accept incoming connections.
Only active sockets may use the
.Xr connect 2
call to initiate connections.
.Pp
L2CAP sockets supports
.Dq wildcard addressing .
In this case socket must be bound to
.Dv NG_HCI_BDADDR_ANY
address. Note that PSM (Protocol/Service Multiplexor) filed is always
required. Once a connection has been established the socket's address is
fixed by the peer entity's location. The address assigned the socket is
the address associated with the Bluetooth device through which packets are
L2CAP sockets support
.Dq "wildcard addressing" .
In this case, socket must be bound to
.Dv NG_HCI_BDADDR_ANY
address.
Note that PSM (Protocol/Service Multiplexor) filed is always
required.
Once a connection has been established the socket's address is
fixed by the peer entity's location.
The address assigned the socket is
the address associated with the Bluetooth device through which packets are
being transmitted and received, and PSM (Protocol/Service Multiplexor).
.Pp
L2CAP sockets support number of options defined at
.Dv SOL_L2CAP
level which can be set with
.Xr setsockopt 2
and tested with
.Dv SOL_L2CAP
level which can be set with
.Xr setsockopt 2
and tested with
.Xr getsockopt 2 :
.Bl -tag -width foo
.Bl -tag -width indent
.It Dv SO_L2CAP_IMTU
Get (set) maximum payload size the local socket is capable of accepting.
.It Dv SO_L2CAP_OMTU
Get maximum payload size the remote socket is capable of accepting.
.It Dv SO_L2CAP_IFLOW
Get incoming flow specification for the socket.
.Em Not implemented .
Get incoming flow specification for the socket.
.Bf -emphasis
Not implemented.
.Ef
.It Dv SO_L2CAP_OFLOW
Get (set) outgoing flow specification for the socket.
.Em Not implemented .
.Bf -emphasis
Not implemented.
.Ef
.It Dv SO_L2CAP_FLUSH
Get (set) value of the flush timeout.
.Em Not implemeted .
.Bf -emphasis
Not implemeted.
.Ef
.El
.Sh HOOKS
This node type supports hooks with arbitrary names (as long as they are
This node type supports hooks with arbitrary names (as long as they are
unique) and always accepts hook connection requests.
.Sh NETGRAPH CONTROL MESSAGES
This node type supports the generic control messages.
.Sh SHUTDOWN
These nodes are persistent and cannot be shut down.
.Sh BUGS
Most likely. Please report if found.
Most likely.
Please report if found.
.Sh SEE ALSO
.Xr btsockstat 1 ,
.Xr socket 2 ,
.Xr netgraph 4 ,
.Xr ngctl 8 ,
.Xr ng_hci 4 ,
.Xr ng_l2cap 4 ,
.Xr btsockstat 1
.Xr ngctl 8
.Sh HISTORY
The
.Nm
node type was implemented in
.Nm btsock_hci_raw , btsock_l2c_raw ,
and
.Nm btsock_l2c
node types were implemented in
.Fx 5.0 .
.Sh AUTHORS
.An Maksim Yevmenkin Aq m_evmenkin@yahoo.com

55
share/man/man4/ng_h4.4
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@ -1,8 +1,6 @@
.\" ng_h4.4
.\"
.\" 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:
@ -11,7 +9,7 @@
.\" 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
@ -23,15 +21,15 @@
.\" 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 1.3 2002/11/12 17:10:13 max Exp $
.\"
.\" $FreeBSD$
.\"
.Dd June 14, 2002
.Dt NG_H4 4
.Os
.Sh NAME
.Nm h4
.Nd Netgraph node type that is also a H4 line discipline
.Nm ng_h4
.Nd Netgraph node type that is also an H4 line discipline
.Sh SYNOPSIS
.In sys/types.h
.In sys/ttycom.h
@ -39,20 +37,22 @@
.In netgraph/ng_h4.h
.Sh DESCRIPTION
The
.Nm
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,
.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
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.
@ -65,22 +65,22 @@ Information about the node is available via the netgraph
command
.Dv NGIOCGINFO .
This command returns a
.Dv "struct nodeinfo"
.Vt "struct nodeinfo"
similar to the
.Dv NGM_NODEINFO
netgraph control message.
.Xr netgraph 4
control message.
.Sh HOOKS
This node type supports the following hooks:
.Pp
.Bl -tag -width foobar
.Bl -tag -width indent
.It Dv hook
single HCI frame contained in single
.Dv mbuf
.Vt mbuf
structure.
.El
.Sh CONTROL MESSAGES
This node type supports the generic control messages, plus the following:
.Bl -tag -width foo
.Bl -tag -width indent
.It Dv NGM_H4_NODE_RESET
Reset the node.
.It Dv NGM_H4_NODE_GET_STATE
@ -96,8 +96,8 @@ Returns current length of outgoing queue for the node.
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
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.
@ -106,7 +106,10 @@ Reset all statistic counters to zero.
This node shuts down when the corresponding device is closed
(or the line discipline is uninstalled on the device).
.Sh BUGS
This node still uses spltty() to lock tty layer. This is wrong.
This node still uses
.Xr spltty 9
to lock tty layer.
This is wrong.
.Sh SEE ALSO
.Xr ioctl 2 ,
.Xr netgraph 4 ,
@ -114,7 +117,7 @@ This node still uses spltty() to lock tty layer. This is wrong.
.Xr ngctl 8
.Sh HISTORY
The
.Nm
.Nm h4
node type was implemented in
.Fx 5.0 .
.Sh AUTHORS

305
share/man/man4/ng_hci.4
View File

@ -1,8 +1,6 @@
.\" ng_hci.4
.\"
.\" 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:
@ -11,7 +9,7 @@
.\" 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
@ -23,15 +21,15 @@
.\" 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_hci.4,v 1.8 2002/11/12 22:35:39 max Exp $
.\"
.\" $FreeBSD$
.\"
.Dd June 25, 2002
.Dt NG_HCI 4
.Os
.Sh NAME
.Nm hci
.Nd Netgraph node type that is also a Bluetooth Host Controller Interface
.Nm ng_hci
.Nd Netgraph node type that is also a Bluetooth Host Controller Interface
(HCI) layer
.Sh SYNOPSIS
.In sys/types.h
@ -40,78 +38,100 @@
.In netgraph/ng_hci.h
.Sh DESCRIPTION
The
.Nm
.Nm hci
node type is a Netgraph node type that implements Bluetooth Host Controller
Interface (HCI) layer as per chapter H1 of the Bluetooth Specification Book
Interface (HCI) layer as per chapter H1 of the Bluetooth Specification Book
v1.1.
.Sh INTRODUCTION TO BLUETOOTH
Bluetooth is a short-range radio link intended to replace the cable(s)
connecting portable and/or fixed electronic devices. Bluetooth operates
in the unlicensed ISM band at 2.4 GHz. The Bluetooth protocol uses a
combination of circuit and packet switching. Bluetooth can support an
Bluetooth is a short-range radio link intended to replace the cable(s)
connecting portable and/or fixed electronic devices.
Bluetooth operates in the unlicensed ISM band at 2.4 GHz.
The Bluetooth protocol uses a
combination of circuit and packet switching.
Bluetooth can support an
asynchronous data channel, up to three simultaneous synchronous voice
channels, or a channel which simultaneously supports asynchronous data
and synchronous voice. Each voice channel supports a 64 kb/s synchronous
(voice) channel in each direction. The asynchronous channel can support
maximal 723.2 kb/s asymmetric (and still up to 57.6 kb/s in the return
channels, or a channel which simultaneously supports asynchronous data
and synchronous voice.
Each voice channel supports a 64 kb/s synchronous
(voice) channel in each direction.
The asynchronous channel can support
maximal 723.2 kb/s asymmetric (and still up to 57.6 kb/s in the return
direction), or 433.9 kb/s symmetric.
.Pp
The Bluetooth system provides a point-to-point connection (only two
Bluetooth units involved), or a point-to-multipoint connection. In the
point-to-multipoint connection, the channel is shared among several
Bluetooth units. Two or more units sharing the same channel form a
.Em piconet .
One Bluetooth unit acts as the master of the piconet, whereas the other
unit(s) acts as slave(s). Up to seven slaves can be active in the piconet.
The Bluetooth system provides a point-to-point connection (only two
Bluetooth units involved), or a point-to-multipoint connection.
In the point-to-multipoint connection,
the channel is shared among several Bluetooth units.
Two or more units sharing the same channel form a
.Dq piconet .
One Bluetooth unit acts as the master of the piconet, whereas the other
unit(s) acts as slave(s).
Up to seven slaves can be active in the piconet.
In addition, many more slaves can remain locked to the master in a so-called
parked state. These parked slaves cannot be active on the channel, but remain
synchronized to the master. Both for active and parked slaves, the channel
parked state.
These parked slaves cannot be active on the channel, but remain
synchronized to the master.
Both for active and parked slaves, the channel
access is controlled by the master.
.Pp
Multiple piconets with overlapping coverage areas form a
.Em scatternet .
Each piconet can only have a single master. However, slaves can participate
in different piconets on a time-division multiplex basis. In addition, a
master in one piconet can be a slave in another piconet. The piconets shall
not be frequency-synchronized. Each piconet has its own hopping channel.
.Ss Time slots
The channel is divided into time slots, each 625 usec in length. The time
slots are numbered according to the Bluetooth clock of the piconet master.
The slot numbering ranges from 0 to 2^27 -1 and is cyclic with a cycle length
of 2^27. In the time slots, master and slave can transmit packets.
.Ss SCO link
The SCO link is a symmetric, point-to-point link between the master and a
specific slave. The SCO link reserves slots and can therefore be considered
as a circuit-switched connection between the master and the slave. The SCO
link typically supports time-bounded information like voice. The master can
support up to three SCO links to the same slave or to different slaves. A
slave can support up to three SCO links from the same master, or two SCO
links if the links originate from different masters. SCO packets are never
retransmitted.
.Ss ACL link
In the slots not reserved for SCO links, the master can exchange packets
with any slave on a per-slot basis. The ACL link provides a packet-switched
connection between the master and all active slaves participating in the
piconet. Both asynchronous and isochronous services are supported. Between
a master and a slave only a single ACL link can exist. For most ACL packets,
.Pp
Multiple piconets with overlapping coverage areas form a
.Dq scatternet .
Each piconet can only have a single master.
However, slaves can participate
in different piconets on a time-division multiplex basis.
In addition, a master in one piconet can be a slave in another piconet.
The piconets shall not be frequency-synchronized.
Each piconet has its own hopping channel.
.Ss Time Slots
The channel is divided into time slots, each 625 usec in length.
The time
slots are numbered according to the Bluetooth clock of the piconet master.
The slot numbering ranges from 0 to 2^27 -1 and is cyclic with a cycle length
of 2^27.
In the time slots, master and slave can transmit packets.
.Ss SCO Link
The SCO link is a symmetric, point-to-point link between the master and a
specific slave.
The SCO link reserves slots and can therefore be considered
as a circuit-switched connection between the master and the slave.
The SCO link typically supports time-bounded information like voice.
The master can
support up to three SCO links to the same slave or to different slaves.
A
slave can support up to three SCO links from the same master, or two SCO
links if the links originate from different masters.
SCO packets are never retransmitted.
.Ss ACL Link
In the slots not reserved for SCO links, the master can exchange packets
with any slave on a per-slot basis.
The ACL link provides a packet-switched
connection between the master and all active slaves participating in the
piconet.
Both asynchronous and isochronous services are supported.
Between a master and a slave only a single ACL link can exist.
For most ACL packets,
packet retransmission is applied to assure data integrity.
.Sh HOST CONTROLLER INTERFACE (HCI)
The HCI provides a command interface to the baseband controller and link
manager, and access to hardware status and control registers. This interface
The HCI provides a command interface to the baseband controller and link
manager, and access to hardware status and control registers.
This interface
provides a uniform method of accessing the Bluetooth baseband capabilities.
.Pp
The HCI layer on the Host exchanges data and commands with the HCI firmware
on the Bluetooth hardware. The Host Controller Transport Layer (i.e. physical
on the Bluetooth hardware.
The Host Controller Transport Layer (i.e. physical
bus) driver provides both HCI layers with the ability to exchange information
with each other.
.Pp
The Host will receive asynchronous notifications of HCI events independent
of which Host Controller Transport Layer is used. HCI events are used for
notifying the Host when something occurs. When the Host discovers that an
event has occurred it will then parse the received event packet to determine
The Host will receive asynchronous notifications of HCI events independent
of which Host Controller Transport Layer is used.
HCI events are used for
notifying the Host when something occurs.
When the Host discovers that an
event has occurred it will then parse the received event packet to determine
which event occurred.
The next sections specify the HCI packet formats.
.Ss HCI command packet
.Ss HCI Command Packet
.Bd -literal -offset indent
#define NG_HCI_CMD_PKT 0x01
typedef struct {
@ -122,15 +142,19 @@ typedef struct {
.Ed
.Pp
The HCI command packet is used to send commands to the Host Controller
from the Host. When the Host Controller completes most of the commands,
a Command Complete event is sent to the Host. Some commands do not receive
a Command Complete event when they have been completed. Instead, when the
Host Controller receives one of these commands the Host Controller sends
a Command Status event back to the Host when it has begun to execute the
command. Later on, when the actions associated with the command have finished,
an event that is associated with the sent command will be sent by the Host
from the Host.
When the Host Controller completes most of the commands,
a Command Complete event is sent to the Host.
Some commands do not receive
a Command Complete event when they have been completed.
Instead, when the
Host Controller receives one of these commands the Host Controller sends
a Command Status event back to the Host when it has begun to execute the
command.
Later on, when the actions associated with the command have finished,
an event that is associated with the sent command will be sent by the Host
Controller to the Host.
.Ss HCI event packet
.Ss HCI Event Packet
.Bd -literal -offset indent
#define NG_HCI_EVENT_PKT 0x04
typedef struct {
@ -140,9 +164,9 @@ typedef struct {
} __attribute__ ((packed)) ng_hci_event_pkt_t;
.Ed
.Pp
The HCI event packet is used by the Host Controller to notify the Host
The HCI event packet is used by the Host Controller to notify the Host
when events occur.
.Ss HCI ACL data packet
.Ss HCI ACL Data Packet
.Bd -literal -offset indent
#define NG_HCI_ACL_DATA_PKT 0x02
typedef struct {
@ -152,9 +176,9 @@ typedef struct {
} __attribute__ ((packed)) ng_hci_acldata_pkt_t;
.Ed
.Pp
HCI ACL data packets are used to exchange ACL data between the Host and
HCI ACL data packets are used to exchange ACL data between the Host and
Host Controller.
.Ss HCI SCO data packet
.Ss HCI SCO Data Packet
.Bd -literal -offset indent
#define NG_HCI_SCO_DATA_PKT 0x03
typedef struct {
@ -164,29 +188,31 @@ typedef struct {
} __attribute__ ((packed)) ng_hci_scodata_pkt_t;
.Ed
.Pp
HCI SCO data packets are used to exchange SCO data between the Host and
HCI SCO data packets are used to exchange SCO data between the Host and
Host Controller.
.Sh HCI INITIALIZATION
On initialization, HCI control application must issue the following HCI
commands (in any order).
.Bl -tag -width foobar
.Bl -tag -width indent
.It Dv Read_BD_ADDR
To obtain BD_ADDR of the Bluetooth unit.
.It Dv Read_Local_Supported_Features
To obtain the list of features supported by Bluetooth unit.
.It Dv Read_Buffer_Size
To determine the maximum size of HCI ACL and SCO HCI data packets (excluding
header) that can be sent from the Host to the Host Controller. There are also
two additional return parameters that specify the total number of HCI ACL and
SCO data packets that the Host Controller can have waiting for transmission in
its buffers.
To determine the maximum size of HCI ACL and SCO HCI data packets (excluding
header) that can be sent from the Host to the Host Controller.
There are also
two additional return parameters that specify the total number of HCI ACL and
SCO data packets that the Host Controller can have waiting for transmission in
its buffers.
.El
.Pp
As soon as HCI initialization has been successfuly performed, HCI control
As soon as HCI initialization has been successfuly performed, HCI control
application must turn on
.Dq inited
bit for the node. Once HCI node has been initialized all upsteam hooks
will receive a
bit for the node.
Once HCI node has been initialized all upsteam hooks
will receive a
.Dv NGM_HCI_NODE_UP
Netgraph message defined as follows.
.Bd -literal -offset indent
@ -200,17 +226,22 @@ typedef struct {
.Ed
.Sh HCI FLOW CONTROL
HCI layer performs flow control on baseband connection basis (i.e. ACL and
SCO link). Each baseband connection has
.Em connection handle
and queue of outgoing data packets. Upper layers protocols are allowed to
send up to (
.Dv num_pkts -
SCO link).
Each baseband connection has
.Dq "connection handle"
and queue of outgoing data packets.
Upper layers protocols are allowed to
send up to
.Dv ( num_pkts
\-
.Dv pending )
packets at one time. HCI layer will send
.Dv NGM_HCI_SYNC_CON_QUEUE
Netgraph messages to inform upper layers about current queue state for each
connection handle. The
.Dv NGM_HCI_SYNC_CON_QUEUE
packets at one time.
HCI layer will send
.Dv NGM_HCI_SYNC_CON_QUEUE
Netgraph messages to inform upper layers about current queue state for each
connection handle.
The
.Dv NGM_HCI_SYNC_CON_QUEUE
Netgraph message is defined as follows.
.Bd -literal -offset indent
#define NGM_HCI_SYNC_CON_QUEUE 113 /* HCI -> Upper */
@ -221,71 +252,73 @@ typedef struct {
.Ed
.Sh HOOKS
This node type supports the following hooks:
.Pp
.Bl -tag -width foobar
.Bl -tag -width indent
.It Dv drv
Bluetooth Host Controller Transport Layer hook. Single HCI packet contained in
single
.Dv mbuf
Bluetooth Host Controller Transport Layer hook.
Single HCI packet contained in single
.Vt mbuf
structure.
.It Dv acl
Upper layer protocol/node is connected to the hook. Single HCI ACL
data packet contained in single
.Dv mbuf
Upper layer protocol/node is connected to the hook.
Single HCI ACL data packet contained in single
.Vt mbuf
structure.
.It Dv sco
Upper layer protocol/node is connected to the hook. Single HCI SCO
data packet contained in single
.Dv mbuf
Upper layer protocol/node is connected to the hook.
Single HCI SCO data packet contained in single
.Vt mbuf
structure.
.It Dv raw
Raw hook. Every HCI frame (including HCI command frame) that goes in
or out will be delivired to the hook. Usually Bluetooth raw HCI sockets
layer is connected to the hook. Single HCI frame contained in single
. Dv mbuf
Raw hook.
Every HCI frame (including HCI command frame) that goes in
or out will be delivired to the hook.
Usually Bluetooth raw HCI sockets layer is connected to the hook.
Single HCI frame contained in single
.Vt mbuf
structure.
.El
.Sh BLUETOOTH UPPER LAYER PROTOCOLS INTERFACE (LP CONTROL MESSAGES)
.Bl -tag -width foo
.Bl -tag -width indent
.It Dv NGM_HCI_LP_CON_REQ
Requests the lower protocol to create a connection. If a physical link
Requests the lower protocol to create a connection.
If a physical link
to the remote device does not exist, this message must be sent to the lower
protocol (baseband) to establish the physical connection.
.It Dv NGM_HCI_LP_DISCON_REQ
Requests the lower protocol (baseband) to terminate a connection.
Requests the lower protocol (baseband) to terminate a connection.
.It Dv NGM_HCI_LP_CON_CFM
Confirms success or failure of the
.Dv
NGM_HCI_LP_CON_REQ request to establish a lower layer (baseband) connection.
This includes passing the authentication challenge if authentication is
.Dv NGM_HCI_LP_CON_REQ
request to establish a lower layer (baseband) connection.
This includes passing the authentication challenge if authentication is
required to establish the physical link.
.It Dv NGM_HCI_LP_CON_IND
Indicates the lower protocol (baseband) has successfully established
incoming connection.
Indicates the lower protocol (baseband) has successfully established
incoming connection.
.It Dv NGM_HCI_LP_CON_RSP
A response accepting or rejecting the previous connection indication request.
.It Dv NGM_HCI_LP_DISCON_IND
Indicates the lower protocol (baseband) has terminated connection. This
could be a response to
Indicates the lower protocol (baseband) has terminated connection.
This could be a response to
.Dv NGM_HCI_LP_DISCON_REQ
or a timeout event.
.It Dv NGM_HCI_LP_QOS_REQ
Requests the lower protocol (baseband) to accommodate a particular QoS
Requests the lower protocol (baseband) to accommodate a particular QoS
parameter set.
.It Dv NGM_HCI_LP_QOS_CFM
Confirms success or failure of the request for a given quality of service.
.It Dv NGM_HCI_LP_QOS_IND
Indicates the lower protocol (baseband) has detected a violation of the QoS
Indicates the lower protocol (baseband) has detected a violation of the QoS
agreement.
.El
.Sh NETGRAPH CONTROL MESSAGES
This node type supports the generic control messages, plus the following:
.Bl -tag -width foo
.Bl -tag -width indent
.It Dv NGM_HCI_NODE_GET_STATE
Returns current state for the node.
.It Dv NGM_HCI_NODE_INIT
Turn on
.Dq inited
.Dq inited
bit for the node.
.It Dv NGM_HCI_NODE_GET_DEBUG
Returns an integer containing the current debug level for the node.
@ -309,15 +342,18 @@ Returns various statistic counters.
.It Dv NGM_HCI_NODE_RESET_STAT
Resets all statistic counters to zero.
.It NGM_HCI_NODE_SET_LINK_POLICY_SETTINGS_MASK
Sets current link policy settings mask. After the new ACL connection is
created the HCI node will try set link policy for the ACL connection. By
default every supported Link Manager (LM) mode will be enabled. User can
override this by setting link policy settings mask which specifies LM
Sets current link policy settings mask.
After the new ACL connection is
created the HCI node will try set link policy for the ACL connection.
By default, every supported Link Manager (LM) mode will be enabled.
User can
override this by setting link policy settings mask which specifies LM
modes to be enabled.
.It NGM_HCI_NODE_GET_LINK_POLICY_SETTINGS_MASK
Returns current link policy settings mask.
.It NGM_HCI_NODE_SET_PACKET_MASK
Sets current packet mask. When new baseband (ACL or SCO) connection is
Sets current packet mask.
When new baseband (ACL or SCO) connection is
created the HCI node will specify every packet type supported by the device.
User can override this by setting packet mask which specifies packet types
to be used for new baseband connections.
@ -325,17 +361,20 @@ to be used for new baseband connections.
Returns current packet mask.
.El
.Sh SHUTDOWN
This node shuts down upon receipt of a NGM_SHUTDOWN control message, or
This node shuts down upon receipt of a
.Dv NGM_SHUTDOWN
control message, or
when all hooks have been disconnected.
.Sh BUGS
Most likely. Please report if found.
Most likely.
Please report if found.
.Sh SEE ALSO
.Xr netgraph 4 ,
.Xr ngctl 8 ,
.Xr hccontrol 8
.Xr hccontrol 8 ,
.Xr ngctl 8
.Sh HISTORY
The
.Nm
.Nm hci
node type was implemented in
.Fx 5.0 .
.Sh AUTHORS

389
share/man/man4/ng_l2cap.4
View File

@ -1,8 +1,6 @@
.\" ng_l2cap.4
.\"
.\" 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:
@ -11,7 +9,7 @@
.\" 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
@ -23,14 +21,14 @@
.\" 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_l2cap.4,v 1.4 2002/11/12 17:16:19 max Exp $
.\"
.\" $FreeBSD$
.\"
.Dd July 4, 2002
.Dt NG_L2CAP 4
.Os
.Sh NAME
.Nm l2cap
.Nm ng_l2cap
.Nd Netgraph node type that implements Bluetooth Logical Link Control and
Adaptation Protocol (L2CAP)
.Sh SYNOPSIS
@ -41,123 +39,164 @@ Adaptation Protocol (L2CAP)
.In netgraph/ng_l2cap.h
.Sh DESCRIPTION
The
.Nm
node type is a Netgraph node type that implements Bluetooth Logical Link
.Nm l2cap
node type is a Netgraph node type that implements Bluetooth Logical Link
Control and Adaptation Protocol as per chapter D of the Bluetooth Specification
Book v1.1.
.Pp
L2CAP provides connection-oriented and connectionless data services to upper
L2CAP provides connection-oriented and connectionless data services to upper
layer protocols with protocol multiplexing capability, segmentation and
reassembly operation, and group abstractions. L2CAP permits higher level
reassembly operation, and group abstractions.
L2CAP permits higher level
protocols and applications to transmit and receive L2CAP data packets up to
64 kilobytes in length.
.Ss L2CAP assumptions
.Bl -enum -offset indent
.Ss L2CAP Assumptions
.Bl -enum -offset indent
.It
The ACL link between two units is set up. The Baseband provides orderly
delivery of data packets, although there might be individual packet corruption
and duplicates. No more than 1 ACL link exists between any two devices.
The ACL link between two units is set up.
The Baseband provides orderly
delivery of data packets, although there might be individual packet corruption
and duplicates.
No more than 1 ACL link exists between any two devices.
.It
The Baseband always provides the impression of full-duplex communication
channels. This does not imply that all L2CAP communications are bi-directional.
channels.
This does not imply that all L2CAP communications are bi-directional.
Multicasts and unidirectional traffic (e.g., video) do not require duplex
channels.
.It
L2CAP provides a reliable channel using the mechanisms available at the
Baseband layer. The Baseband always performs data integrity checks when
Baseband layer.
The Baseband always performs data integrity checks when
requested and resends data until it has been successfully acknowledged or
a timeout occurs. Because acknowledgements may be lost, timeouts may
a timeout occurs.
Because acknowledgements may be lost, timeouts may
occur even after the data has been successfully sent.
.El
.Sh L2CAP GENERAL OPERATION
The Logical Link Control and Adaptation Protocol (L2CAP) is based around the
concept of
.Em channels .
Each channel is bound to a single protocol in a many-to-one fashion. Multiple
channels can be bound to the same protocol, but a channel cannot be bound to
multiple protocols. Each L2CAP packet received on a channel is directed to
.Dq channels .
Each channel is bound to a single protocol in a many-to-one fashion.
Multiple
channels can be bound to the same protocol, but a channel cannot be bound to
multiple protocols.
Each L2CAP packet received on a channel is directed to
the appropriate higher level protocol.
.Pp
Each one of the end-points of an L2CAP channel is referred to by a channel
identifier. Channel identifiers (CIDs) are local names representing a logical
channel end-point on the device. Identifiers from 0x0001 to 0x003F are reserved
for specific L2CAP functions. The null identifier (0x0000) is defined as an
illegal identifier and must never be used as a destination end-point.
All L2CAP signalling commands are sent to CID 0x0001. CID 0x0002 is reserved
for group-oriented channel. The same CID must not be reused as a local L2CAP
channel endpoint for multiple simultaneous L2CAP channels between a local
Each one of the end-points of an L2CAP channel is referred to by a channel
identifier.
Channel identifiers (CIDs) are local names representing a logical
channel end-point on the device.
Identifiers from 0x0001 to 0x003F are reserved
for specific L2CAP functions.
The null identifier (0x0000) is defined as an
illegal identifier and must never be used as a destination end-point.
All L2CAP signalling commands are sent to CID 0x0001.
CID 0x0002 is reserved for group-oriented channel.
The same CID must not be reused as a local L2CAP
channel endpoint for multiple simultaneous L2CAP channels between a local
device and some remote device.
.Pp
CID assignment is relative to a particular device and a device can assign CIDs
independently from other devices. Thus, even if the same CID value has been
independently from other devices.
Thus, even if the same CID value has been
assigned to (remote) channel endpoints by several remote devices connected
to a single local device, the local device can still uniquely associate each
remote CID with a different device.
.Ss Channel operational states
.Bl -tag -width foobar
.Ss Channel Operational States
.Bl -tag -width indent
.It Dv NG_L2CAP_CLOSED
In this state, there is no channel associated with this CID. This is the only
state when a link level connection (Baseband) may not exist. Link disconnection
forces all other states into the NG_L2CAP_CLOSED state.
In this state, there is no channel associated with this CID.
This is the only
state when a link level connection (Baseband) may not exist.
Link disconnection
forces all other states into the
.Dv NG_L2CAP_CLOSED
state.
.It Dv NG_L2CAP_W4_L2CAP_CON_RSP
In this state, the CID represents a local end-point and an L2CAP Connect
Request message has been sent referencing this endpoint and it is now waiting
In this state, the CID represents a local end-point and an L2CAP Connect
Request message has been sent referencing this endpoint and it is now waiting
for the corresponding L2CAP Connect Response message.
.It Dv NG_L2CAP_W4_L2CA_CON_RSP
In this state, the remote end-point exists and an L2CAP Connect Request has
been received by the local L2CAP entity. An L2CA Connect Indication has been
been received by the local L2CAP entity.
An L2CA Connect Indication has been
sent to the upper layer and the part of the local L2CAP entity processing the
received L2CAP Connect Request waits for the corresponding response. The
response may require a security check to be performed.
received L2CAP Connect Request waits for the corresponding response.
The response may require a security check to be performed.
.It Dv NG_L2CAP_CONFIG
In this state, the connection has been established but both sides are still
negotiating the channel parameters. The Configuration state may also be
entered when the channel parameters are being renegotiated. Prior to entering
the NG_L2CAP_CONFIG state, all outgoing data traffic is suspended since
the traffic parameters of the data traffic are to be renegotiated. Incoming
negotiating the channel parameters.
The Configuration state may also be
entered when the channel parameters are being renegotiated.
Prior to entering
the
.Dv NG_L2CAP_CONFIG
state, all outgoing data traffic is suspended since
the traffic parameters of the data traffic are to be renegotiated.
Incoming
data traffic is accepted until the remote channel endpoint has entered
the NG_L2CAP_CONFIG state. In the NG_L2CAP_CONFIG state, both sides will issue
L2CAP Configuration Request messages if only defaults are being used, a null
message will be sent. If a large amount of parameters need to be negotiated,
the
.Dv NG_L2CAP_CONFIG
state.
In the
.Dv NG_L2CAP_CONFIG
state, both sides will issue
L2CAP Configuration Request messages if only defaults are being used, a null
message will be sent.
If a large amount of parameters need to be negotiated,
multiple messages will be sent to avoid any MTU limitations and negotiate
incrementally. Moving from the NG_L2CAP_CONFIG state to the NG_L2CAP_OPEN state
requires both sides to be ready. An L2CAP entity is ready when it has received
a positive response to its final request and it has positively responded to
incrementally.
Moving from the
.Dv NG_L2CAP_CONFIG
state to the
.Dv NG_L2CAP_OPEN
state
requires both sides to be ready.
An L2CAP entity is ready when it has received
a positive response to its final request and it has positively responded to
the final request from the remote device.
.It Dv NG_L2CAP_OPEN
In this state, the connection has been established and configured, and data
flow may proceed.
.It Dv NG_L2CAP_W4_L2CAP_DISCON_RSP
In this state, the connection is shutting down and an L2CAP Disconnect Request
message has been sent. This state is now waiting for the corresponding response.
message has been sent.
This state is now waiting for the corresponding response.
.It Dv NG_L2CAP_W4_L2CA_DISCON_RSP
In this state, the connection on the remote endpoint is shutting down and an
L2CAP Disconnect Request message has been received. An L2CA Disconnect
Indication has been sent to the upper layer to notify the owner of the CID
that the remote endpoint is being closed. This state is now waiting for the
corresponding response from the upper layer before responding to the remote
L2CAP Disconnect Request message has been received.
An L2CA Disconnect
Indication has been sent to the upper layer to notify the owner of the CID
that the remote endpoint is being closed.
This state is now waiting for the
corresponding response from the upper layer before responding to the remote
endpoint.
.El
.Ss Protocol Multiplexing
L2CAP supports protocol multiplexing because the Baseband Protocol does not
support any
.Dq type
field identifying the higher layer protocol being multiplexed above it.
L2CAP is able to distinguish between upper layer protocols such as the Service
L2CAP supports protocol multiplexing because the Baseband Protocol does not
support any
.Dq type
field identifying the higher layer protocol being multiplexed above it.
L2CAP is able to distinguish between upper layer protocols such as the Service
Discovery Protocol, RFCOMM and Telephony Control.
.Ss Segmentation and Reassembly
The data packets defined by the Baseband Protocol are limited in size. Large
L2CAP packets must be segmented into multiple smaller Baseband packets prior
to their transmission over the air. Similarly, multiple received Baseband
packets may be reassembled into a single larger L2CAP packet.
The data packets defined by the Baseband Protocol are limited in size.
Large
L2CAP packets must be segmented into multiple smaller Baseband packets prior
to their transmission over the air.
Similarly, multiple received Baseband
packets may be reassembled into a single larger L2CAP packet.
.Ss Quality of Service
The L2CAP connection establishment process allows the exchange of information
regarding the quality of service (QoS) expected between two Bluetooth units.
regarding the quality of service (QoS) expected between two Bluetooth units.
.Ss Groups
The Baseband Protocol supports the concept of a piconet, a group of devices
synchronously hopping together using the same clock. The L2CAP group
The Baseband Protocol supports the concept of a piconet, a group of devices
synchronously hopping together using the same clock.
The L2CAP group
abstraction permits implementations to efficiently map protocol groups on to
piconets.
piconets.
.Pp
The following features are outside the scope of L2CAP responsibilities:
.Bl -dash -offset indent
@ -178,84 +217,101 @@ This node type supports the following hooks:
.It Dv hci
Bluetooth Host Controller Interface downstream hook.
.It Dv l2c
Upper layer protocol upstream hook. Usually Bluetooth L2CAP sockets layer
Upper layer protocol upstream hook.
Usually Bluetooth L2CAP sockets layer
is connected to the hook.
.It Dv ctl
Control hook. Usually Bluetooth raw L2CAP sockets layer is connected
to the hook.
Control hook.
Usually Bluetooth raw L2CAP sockets layer is connected to the hook.
.El
.Sh INTERFACE TO THE UPPER LAYER PROTOCOLS (L2CA CONTROL MESSAGES)
Bluetooth specification says that L2CA request must block until response
is ready. L2CAP node uses
.Dq token
field from Netgraph message header to match L2CA request and response. The
upper layer protocol must populate
.Dq token .
L2CAP node will queue request and start processing. Later, when response is
ready or timeout has occur L2CAP node will create new Netgraph message, set
.Dq token
and
.Dv NFG_RESP
flag and send message to the upper layer. Note that L2CA indication messages
will not populate
.Dq token
and will not set
.Dv NGF_RESP
flag. There is no reason for this, because they are just notifications and do
Bluetooth specification says that L2CA request must block until response
is ready.
L2CAP node uses
.Va token
field from Netgraph message header to match L2CA request and response.
The upper layer protocol must populate
.Va token .
L2CAP node will queue request and start processing.
Later, when response is
ready or timeout has occured, L2CAP node will create new Netgraph message, set
.Va token
and
.Dv NFG_RESP
flag and send message to the upper layer.
Note that L2CA indication messages
will not populate
.Va token
and will not set
.Dv NGF_RESP
flag.
There is no reason for this, because they are just notifications and do
not require acknowledgment.
.Pp
.Bl -tag -width foo
.Bl -tag -width indent
.It Dv NGM_L2CAP_L2CA_CON
Requests the creation of a channel representing a logical connection to a
physical address. Input parameters are the target protocol (PSM) and remote
device's 48-bit address (BD_ADDR). Output parameters are the local CID (LCID)
allocated by the local L2CAP entity, and Result of the request. If Result
Requests the creation of a channel representing a logical connection to a
physical address.
Input parameters are the target protocol (PSM) and remote
device's 48-bit address (BD_ADDR).
Output parameters are the local CID (LCID)
allocated by the local L2CAP entity, and Result of the request.
If Result
indicates a pending notification, the Status value may contain more information
of what processing is delaying the establishment of the connection.
.It Dv NGM_L2CAP_L2CA_CON_IND
This message includes the parameters for the address of the remote device that
issued the connection request, the local CID representing the channel being
requested, the Identifier contained in the request, and the PSM value the
This message includes the parameters for the address of the remote device that
issued the connection request, the local CID representing the channel being
requested, the Identifier contained in the request, and the PSM value the
request is targeting.
.It Dv NGM_L2CAP_L2CA_CON_RSP
Issues a response to a connection request event indication. Input parameters
are the remote device's 48-bit address, Identifier sent in the request, local
CID, the Response code, and the Status attached to the Response code. The
output parameter is the Result of the service request. This primitive must be
called no more than once after receiving the indication.
Issues a response to a connection request event indication.
Input parameters
are the remote device's 48-bit address, Identifier sent in the request, local
CID, the Response code, and the Status attached to the Response code.
The output parameter is the Result of the service request.
This primitive must be
called no more than once after receiving the indication.
.It Dv NGM_L2CAP_L2CA_CFG
Requests the initial configuration (or reconfiguration) of a channel to a new
set of channel parameters. Input parameters are the local CID endpoint, new
incoming receivable MTU (InMTU), new outgoing flow spec-ification, and flush
and link timeouts. Output parameters are the Result, accepted incoming MTU
Requests the initial configuration (or reconfiguration) of a channel to a new
set of channel parameters.
Input parameters are the local CID endpoint, new
incoming receivable MTU (InMTU), new outgoing flow spec-ification, and flush
and link timeouts.
Output parameters are the Result, accepted incoming MTU
(InMTU), the remote side's flow requests, and flush and link timeouts.
.It Dv NGM_L2CAP_L2CA_CFG_IND
This message includes the parameters indicating the local CID of the channel
the request has been sent to, the outgoing MTU size (maximum packet that can
be sent across the channel) and the flowspec describing the characteristics of
the incoming data. All other channel parameters are set to their default values if not provided by the remote device.
This message includes the parameters indicating the local CID of the channel
the request has been sent to, the outgoing MTU size (maximum packet that can
be sent across the channel) and the flowspec describing the characteristics of
the incoming data.
All other channel parameters are set to their default values
if not provided by the remote device.
.It Dv NGM_L2CAP_L2CA_CFG_RSP
Issues a response to a configuration request event indication. Input parameters
include the local CID of the endpoint being configured, outgoing transmit MTU
(which may be equal or less to the OutMTU parameter in the configuration
indication event) and the accepted flowspec for incoming traffic. The output
parameter is the Result value.
Issues a response to a configuration request event indication.
Input parameters
include the local CID of the endpoint being configured, outgoing transmit MTU
(which may be equal or less to the OutMTU parameter in the configuration
indication event) and the accepted flowspec for incoming traffic.
The output parameter is the Result value.
.It Dv NGM_L2CAP_L2CA_QOS_IND
This message includes the parameter indicating the address of the remote
This message includes the parameter indicating the address of the remote
Bluetooth device where the QoS contract has been violated.
.It Dv NGM_L2CAP_L2CA_DISCON
Requests the disconnection of the channel. Input parameter is the CID
representing the local channel endpoint. Output parameter is Result. Result
is zero if a L2CAP Disconnect Response is received, otherwise a non-zero value
is returned. Once disconnection has been requested, no process will be able to
successfully read or write from the CID.
Requests the disconnection of the channel.
Input parameter is the CID representing the local channel endpoint.
Output parameter is Result.
Result
is zero if a L2CAP Disconnect Response is received, otherwise a non-zero value
is returned.
Once disconnection has been requested, no process will be able to
successfully read or write from the CID.
.It Dv NGM_L2CAP_L2CA_DISCON_IND
This message includes the parameter indicating the local CID the request has
This message includes the parameter indicating the local CID the request has
been sent to.
.It Dv NGM_L2CAP_L2CA_WRITE
Response to transfer of data request. Actual data must be received from
Response to transfer of data request.
Actual data must be received from
appropriate upstream hook and must be prepended with header defined as follows.
.Pp
.Bd -literal -offset indent
/* L2CA data packet header */
typedef struct {
@ -267,49 +323,69 @@ typedef struct {
.Pp
The output parameters are Result and Length of data written.
.It Dv NGM_L2CAP_L2CA_GRP_CREATE
Requests the creation of a CID to represent a logical connection to multiple
devices. Input parameter is the PSM value that the outgoing connectionless
traffic is labelled with, and the filter used for incoming traffic. Output
parameter is the CID representing the local endpoint. On creation, the group
Requests the creation of a CID to represent a logical connection to multiple
devices.
Input parameter is the PSM value that the outgoing connectionless
traffic is labelled with, and the filter used for incoming traffic.
Output parameter is the CID representing the local endpoint.
On creation, the group
is empty but incoming traffic destined for the PSM value is readable.
.Em This request has not been implemented .
.Bf -emphasis
This request has not been implemented.
.Ef
.It Dv NGM_L2CAP_L2CA_GRP_CLOSE
The use of this message closes down a Group.
.Em This request has not been implemented .
.Bf -emphasis
This request has not been implemented.
.Ef
.It Dv NGM_L2CAP_L2CA_GRP_ADD_MEMBER
Requests the addition of a member to a group. The input parameter includes the
CID representing the group and the BD_ADDR of the group member to be added.
Requests the addition of a member to a group.
The input parameter includes the
CID representing the group and the BD_ADDR of the group member to be added.
The output parameter Result confirms the success or failure of the request.
.Em This request has not been implemented .
.Bf -emphasis
This request has not been implemented.
.Ef
.It Dv NGM_L2CAP_L2CA_GRP_REM_MEMBER
Requests the removal of a member from a group. The input parameters include
the CID representing the group and BD_ADDR of the group member to be removed.
Requests the removal of a member from a group.
The input parameters include
the CID representing the group and BD_ADDR of the group member to be removed.
The output parameter Result confirms the success or failure of the request.
.Em This request has not been implemented .
.Bf -emphasis
This request has not been implemented.
.Ef
.It Dv NGM_L2CAP_L2CA_GRP_MEMBERSHIP
Requests a report of the members of a group. The input parameter CID represents
the group being queried. The output parameter Result confirms the success or
failure of the operation. If the Result is successful, BD_ADDR_Lst is a list
Requests a report of the members of a group.
The input parameter CID represents the group being queried.
The output parameter Result confirms the success or
failure of the operation.
If the Result is successful, BD_ADDR_Lst is a list
of the Bluetooth addresses of the N members of the group.
.Em This request has not been implemented .
.Bf -emphasis
This request has not been implemented.
.Ef
.It Dv NGM_L2CAP_L2CA_PING
Initiates a L2CA Echo Request message and the reception of the corresponding
L2CAP Echo Response message. The input parameters are remote Bluetooth device
BD_ADDR, Echo Data and Length of the echo data. The output parameters are
L2CAP Echo Response message.
The input parameters are remote Bluetooth device
BD_ADDR, Echo Data and Length of the echo data.
The output parameters are
Result, Echo Data and Length of the echo data.
.It Dv NGM_L2CAP_L2CA_GET_INFO
Initiates a L2CA Information Request message and the reception of the
corresponding L2CAP Info Response message. The input parameters are remote
Bluetooth device BD_ADDR and Information Type. The output parameters are
Initiates a L2CA Information Request message and the reception of the
corresponding L2CAP Info Response message.
The input parameters are remote Bluetooth device BD_ADDR and Information Type.
The output parameters are
Result, Information Data and Size of the information data.
.It Dv NGM_L2CAP_L2CA_ENABLE_CLT
Request to disable (enable) the reception of connectionless packets. The input
Request to disable (enable) the reception of connectionless packets.
The input
parameter is the PSM value indicating service that should be blocked
(unblocked) and Enable flag.
(unblocked) and Enable flag.
.El
.Sh NETGRAPH CONTROL MESSAGES
This node type supports the generic control messages, plus the following:
.Bl -tag -width foo
.Bl -tag -width indent
.It Dv NGM_L2CAP_NODE_GET_FLAGS
Returns current state for the node.
.It Dv NGM_L2CAP_NODE_GET_DEBUG
@ -323,18 +399,21 @@ Returns list of active baseband connections (i.e. ACL links).
Returns list of active L2CAP channels.
.El
.Sh SHUTDOWN
This node shuts down upon receipt of a NGM_SHUTDOWN control message, or
This node shuts down upon receipt of an
.Dv NGM_SHUTDOWN
control message, or
when all hooks have been disconnected.
.Sh BUGS
Most likely. Please report if found.
Most likely.
Please report if found.
.Sh SEE ALSO
.Xr netgraph 4 ,
.Xr ngctl 8 ,
.Xr l2control 8 ,
.Xr l2ping 8
.Xr l2ping 8 ,
.Xr ngctl 8
.Sh HISTORY
The
.Nm
.Nm l2cap
node type was implemented in
.Fx 5.0 .
.Sh AUTHORS

58
share/man/man4/ng_ubt.4
View File

@ -1,8 +1,6 @@
.\" ng_ubt.4
.\"
.\" 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:
@ -11,7 +9,7 @@
.\" 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
@ -23,47 +21,49 @@
.\" 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_ubt.4,v 1.2 2002/11/12 17:20:16 max Exp $
.\"
.\" $FreeBSD$
.\"
.Dd June 14, 2002
.Dt NG_UBT 4
.Os
.Sh NAME
.Nm ubt
.Nm ng_ubt
.Nd Netgraph node type that is also a driver for Bluetooth USB devices
.Sh SYNOPSIS
.In sys/types.h
.In ng_ubt.h
.Sh DESCRIPTION
The
.Nm
.Nm 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 supported USB device is plugged.
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 supported USB device is plugged.
.Pp
The node has a single hook called
.Dv 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 HCI frame indicator if device did not send it. HCI frames received
on
(according to the length).
Full HCI frames are sent out on the hook.
The node will add HCI frame indicator if device did not send it.
HCI frames received on
.Dv hook
are transmitted out. The node will drop HCI frame indicator unless device
requires it to be present.
are transmitted out.
The node will drop HCI frame indicator unless device
requires it to be present.
.Sh HOOKS
This node type supports the following hooks:
.Pp
.Bl -tag -width foobar
.Bl -tag -width indent
.It Dv hook
single HCI frame contained in single
.Dv mbuf
.Vt mbuf
structure.
.El
.Sh CONTROL MESSAGES
This node type supports the generic control messages, plus the following:
.Bl -tag -width foo
.Bl -tag -width indent
.It Dv NGM_UBT_NODE_GET_DEBUG
Returns an integer containing the current debug level for the node.
.It Dv NGM_UBT_NODE_SET_DEBUG
@ -73,11 +73,11 @@ for the node.
This command takes a parameter that specifies queue number and returns
current maximal length of the queue for the node.
.It Dv NGM_UBT_NODE_SET_QLEN
This command takes two parameters that specify queue number and maximum
This command takes two parameters that specify queue number and maximum
length of the queue and sets maximal length of the queue for the node.
.It Dv NGM_UBT_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
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_UBT_NODE_RESET_STAT
Reset all statistic counters to zero.
@ -85,17 +85,17 @@ Reset all statistic counters to zero.
.Sh SHUTDOWN
This node shuts down when the corresponding USB device is un-plugged.
.Sh BUGS
Isochronous USB transfers are probably broken. It means that USB device
probably will not be able to transfer SCO data (voice). Driver does not
support firmware upgrade procedure. USB interrupt transfers are
implemented as bulk-in transfers (not really a bug).
Isochronous USB transfers are probably broken.
It means that USB device probably will not be able to transfer SCO data (voice).
Driver does not support firmware upgrade procedure.
USB interrupt transfers are implemented as bulk-in transfers (not really a bug).
.Sh SEE ALSO
.Xr usb 4 ,
.Xr netgraph 4 ,
.Xr usb 4 ,
.Xr ngctl 8
.Sh HISTORY
The
.Nm
.Nm ubt
node type was implemented in
.Fx 5.0 .
.Sh AUTHORS