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+.\"
+.\" Copyright (c) 2016 Alexander Motin <mav@FreeBSD.org>
+.\" All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 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
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" 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.
+.\"
+.\" $FreeBSD$
+.\"
+.Dd July 29, 2016
+.Dt NTB_TRANSPORT 4
+.Os
+.Sh NAME
+.Nm ntb_transport
+.Nd Packet-oriented transport for Non-Transparent Bridges
+.Sh SYNOPSIS
+To load the driver as a module at boot, place the following line in
+.Xr loader.conf 5 :
+.Bd -literal -offset indent
+ntb_transport_load="YES"
+.Ed
+.Pp
+The following tunables are settable from the
+.Xr loader 8 :
+.Bl -ohang
+.It Va hw.ntb_transport.debug_level
+Driver debug level.
+The default value is 0, higher means more verbose.
+.It Va hint.ntb_transport. Ns Ar X Ns Va .config
+Configures queues allocation for consumer devices, separated by commas.
+Each device can be configured as: "<name>[:<queues>]", where:
+.Va name
+is a name of the driver which should attach the device (empty means any),
+.Va queues
+is a number of queues to allocate (empty means automatic),
+The default configuration is empty string, which means single device
+with one queue per memory window allowing any driver attachment.
+.El
+.Sh DESCRIPTION
+The
+.Nm
+driver attaches on top of the
+.Nm ntb
+driver to utilize its resources to create set of bidirectional queues,
+delivering packets between the systems.
+The primary purpose of this is to be used by
+.Nm if_ntb
+network interface, but other consumers may also be developed using KPI.
+.Sh SEE ALSO
+.Xr if_ntb 4 ,
+.Xr ntb_hw 4
+.Sh AUTHORS
+.An -nosplit
+The
+.Nm
+driver was developed by Intel and originally written by
+.An Carl Delsey Aq Mt carl@FreeBSD.org .
+Later improvements were done by
+.An Conrad E. Meyer Aq Mt cem@FreeBSD.org
+and
+.An Alexander Motin Aq Mt mav@FreeBSD.org .