1.\" $NetBSD: btpand.8,v 1.3 2008/08/17 14:43:07 plunky Exp $ 2.\" $FreeBSD$ 3.\" 4.\" Copyright (c) 2008 Iain Hibbert 5.\" All rights reserved. 6.\" 7.\" Redistribution and use in source and binary forms, with or without 8.\" modification, are permitted provided that the following conditions 9.\" are met: 10.\" 1. Redistributions of source code must retain the above copyright 11.\" notice, this list of conditions and the following disclaimer. 12.\" 2. Redistributions in binary form must reproduce the above copyright 13.\" notice, this list of conditions and the following disclaimer in the 14.\" documentation and/or other materials provided with the distribution. 15.\" 16.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19.\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26.\" 27.Dd August 17, 2008 28.Dt BTPAND 8 29.Os 30.Sh NAME 31.Nm btpand 32.Nd Bluetooth PAN daemon 33.Sh SYNOPSIS 34.Nm 35.Op Fl i Ar ifname 36.Op Fl m Ar mode 37.Fl a Ar addr 38.Fl d Ar device 39.Brq Fl s Ar service | Fl S Ar service Op Fl p Ar psm 40.Nm 41.Op Fl c Ar path 42.Op Fl i Ar ifname 43.Op Fl l Ar limit 44.Op Fl m Ar mode 45.Op Fl p Ar psm 46.Fl d Ar device 47.Brq Fl s Ar service | Fl S Ar service 48.Sh DESCRIPTION 49The 50.Nm 51daemon handles Bluetooth Personal Area Networking services 52in the system. 53It can operate in client mode as a Personal Area Networking User 54.Pq PANU 55or in server mode as Network Access Point 56.Pq NAP , 57Group ad-hoc Network 58.Pq GN 59or PANU host. 60.Nm 61connects to the system via a 62.Xr tap 4 63virtual Ethernet device and forwards Ethernet packets to 64remote Bluetooth devices using the Bluetooth Network Encapsulation 65Protocol 66.Pq BNEP . 67.Pp 68The PANU client is the device that uses either the NAP or GN 69service, or can talk directly to a PANU host in a crossover 70cable fashion. 71.Pp 72A GN host forwards Ethernet packets to each of the connected PAN 73users as needed but does not provide access to any additional networks. 74.Pp 75The NAP service provides some of the features of an Ethernet bridge, 76with the NAP host forwarding Ethernet packets between each of the 77connected PAN users, and a different network 78media. 79.Pp 80Note, the only differences between NAP and GN services as implemented by 81.Nm 82are in the SDP service record. 83The bridging of packets by the NAP must be configured separately. 84.Pp 85The options are as follows: 86.Bl -tag -width ".Fl a Ar address" 87.It Fl a Ar address 88In client mode, address of remote server. 89May be given as BDADDR or name, in which case 90.Nm 91will attempt to resolve the address via the 92.Xr bt_gethostbyname 3 93call. 94.It Fl c Ar path 95In server mode, specify 96.Ar path 97to the 98.Xr sdpd 8 99control socket. 100The default path is 101.Pa /var/run/sdp . 102.It Fl d Ar device 103Restrict connections to the local 104.Ar device . 105May be given as BDADDR or name, in which case 106.Nm 107will attempt to resolve the address via the 108.Xr bt_devaddr 3 109call. 110.Nm 111will set the 112.Xr tap 4 113interface physical address to the BDADDR 114of the Bluetooth radio. 115.It Fl i Ar ifname 116.Nm 117uses the 118.Xr tap 4 119driver to create a new network interface for use. 120Use this option to select a specific 121.Xr tap 4 122device interface which must already be created. 123.It Fl l Ar limit 124In server mode, limit the number of simultaneous connections. 125The default limit is 7 for NAP and GN servers, 126and 1 for a PANU server. 127.It Fl m Ar mode 128Set L2CAP connection link mode. 129Supported modes are: 130.Pp 131.Bl -tag -width 8n -compact 132.It auth 133require devices to be paired. 134.It encrypt 135auth, plus enable encryption. 136.It secure 137encryption, plus change of link key. 138.El 139.Pp 140NOT YET SUPPORTED. 141Use global device settings to set authentication and encryption. 142.It Fl p Ar psm 143Use an alternative L2CAP Protocol/Service Multiplexer 144.Pq PSM 145for server mode or client mode 146.Pq when not using Service Discovery . 147The default PSM for BNEP is 15 148.Pq 0x000f . 149.It Fl s Ar service 150Name of 151.Ar service 152to provide or connect to, the following services are recognised: 153.Pp 154.Bl -tag -width 8n -compact 155.It GN 156Group ad-hoc Network. 157.It NAP 158Network Access Point. 159.It PANU 160Personal Area Networking User. 161.El 162.Pp 163.It Fl S Ar service 164As per 165.Fl s 166except that 167.Nm 168will not use SDP services for connection setup. 169.El 170.Pp 171When providing networking services, the Bluetooth PAN profile says that the 172.Sq Class of Device 173property of the bluetooth controller SHALL include Networking capability 174.Pq set bit 0x020000 . 175See 176.Xr hccontrol 8 177for details. 178.Pp 179After 180.Nm 181has set up the client or server connection and opened the 182.Xr tap 4 183interface, it will create a pid file and detach. 184.Sh FILES 185.Bl -tag -width "Pa /etc/bluetooth/hosts" -compact 186.It Pa /dev/tap 187.It Pa /etc/bluetooth/hosts 188.It Pa /var/run/sdp 189.It Pa /var/run/tap Ns Em N Ns No .pid 190.El 191.Sh EXIT STATUS 192.Ex -std 193.Sh EXAMPLES 194.Dl ifconfig tap1 create 195.Dl btpand -a host -d mydevice -s NAP -i tap1 196.Dl dhclient tap1 197.Pp 198Will create a connection to the NAP on 199.Ar host , 200and link that to the 201.Ar tap1 202interface. 203.Pp 204.Dl btpand -d mydevice -s GN 205.Pp 206Will create a Group Network and register the GN service with the local 207SDP server. 208.Sh SEE ALSO 209.Xr bluetooth 3 , 210.Xr tap 4 , 211.Xr bridge 4 , 212.Xr hccontrol 8 , 213.Xr dhclient 8 , 214.Xr ifconfig 8 , 215.Xr sdpd 8 216.Pp 217The 218.Qq Personal Area Networking Profile 219and 220.Qq Bluetooth Network Encapsulation Protocol 221specifications are available at 222.Dl http://www.bluetooth.com/ 223.Sh AUTHORS 224.An Iain Hibbert 225.Sh BUGS 226There is no way to supply alternative values for the SDP record. 227.Pp 228There is no way to set net type or multicast address filters. 229.Pp 230.Nm 231does not do any address routing except to directly connected 232unicast addresses. 233All other packets are multicast. 234.Pp 235As 236.Nm 237uses the BDADDR of the Bluetooth radio as the physical address 238of the tap, only one instance can be run per radio. 239.Pp 240.Nm 241can only provide a single service. 242