UDBP(4FREEBSD) - Linux man page online | Special files

USB Double Bulk Pipe driver.

November 22, 2006
UDBP(4) BSD Kernel Interfaces Manual UDBP(4)


udbp — USB Double Bulk Pipe driver


To compile this driver into the kernel, place the following line in your kernel configura‐ tion file: device udbp Alternatively, to load the driver as a module at boot time, place the following line in loader.conf(5): udbp_load="YES"


The udbp driver provides support for host-to-host cables that contain at least two bulk pipes (one for each direction), for example the EzLink cable and the NetChip 1080 chip. It requires netgraph(4) to be available. This can be done either by adding options NETGRAPH to your kernel configuration file, or alternatively loading netgraph(4) as a module, either from /boot/loader.conf or from the command line, before the udbp module.


options NETGRAPH device udbp Add the udbp driver to the kernel. kldload netgraph kldload udbp Load the netgraph(4) module and then the udbp driver. ngctl mkpeer udbp0: iface data inet ifconfig ng0 Create a new network interface node and connect its inet hook to the data hook of the udbp node. ifconfig(8) configures the resulting network interface ng0 with a local IP address of and a remote IP address of On the remote host, the two IP addresses should of course be reversed.


netgraph(4), ng_iface(4), ohci(4), uhci(4), usb(4), ngctl(8)


The udbp driver first appeared in FreeBSD 5.0.


The udbp driver was written by Doug Ambrisko <>, Julian Elischer <> and Nick Hibma <>. This manual page was written by Nick Hibma <>.
BSD November 22, 2006 BSD
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udbp(4freebsd) referred by
refer to ifconfig(8) | netgraph(4freebsd) | ng_iface(4freebsd) | ohci(4freebsd) | uhci(4freebsd) | usb(4freebsd)
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