Add initial support for RTL8152 USB Fast Ethernet. RTL8152 supports

IPv4/IPv6 checksum offloading and VLAN tag insertion/stripping.

Since uether doesn't provide a way to announce driver specific offload
capabilities to upper stack, checksum offloading support needs more work
and will be done in the future.

Special thanks to Hayes Wang from RealTek who gave input.

3 files changed, 127 insertions, 1 deletions

diff --git a/share/man/man4/Makefile b/share/man/man4/Makefile
index 3b75018..1807876 100644
--- a/share/man/man4/Makefile
+++ b/share/man/man4/Makefile
@@ -521,6 +521,7 @@ MAN=	aac.4 \
 	tws.4 \
 	tx.4 \
 	txp.4 \
+	ure.4 \
 	vale.4 \
 	vga.4 \
 	vge.4 \
@@ -710,6 +711,7 @@ MLINKS+=tl.4 if_tl.4
 MLINKS+=tun.4 if_tun.4
 MLINKS+=tx.4 if_tx.4
 MLINKS+=txp.4 if_txp.4
+MLINKS+=ure.4 if_ure.4
 MLINKS+=vge.4 if_vge.4
 MLINKS+=vlan.4 if_vlan.4
 MLINKS+=vxlan.4 if_vxlan.4
diff --git a/share/man/man4/miibus.4 b/share/man/man4/miibus.4
index b0f5204..667addf 100644
--- a/share/man/man4/miibus.4
+++ b/share/man/man4/miibus.4
@@ -8,7 +8,7 @@
 .\"
 .\" $FreeBSD$
 .\"
-.Dd January 5, 2015
+.Dd December 1, 2015
 .Dt MIIBUS 4
 .Os
 .Sh NAME
@@ -117,6 +117,8 @@ Texas Instruments ThunderLAN
 SMC EtherPower II (83c170)
 .It Xr udav 4
 Davicom DM9601 USB Ethernet
+.It Xr ure 4
+RealTek RTL8152 USB To Fast Ethernet
 .It Xr vge 4
 VIA VT612x PCI Gigabit Ethernet
 .It Xr vr 4
@@ -177,6 +179,7 @@ but as a result are not well behaved newbus device drivers.
 .Xr tl 4 ,
 .Xr tx 4 ,
 .Xr udav 4 ,
+.Xr ure 4 ,
 .Xr vge 4 ,
 .Xr vr 4 ,
 .Xr vte 4 ,
diff --git a/share/man/man4/ure.4 b/share/man/man4/ure.4
new file mode 100644
index 0000000..1b2ebb8
--- /dev/null
+++ b/share/man/man4/ure.4
@@ -0,0 +1,121 @@
+.\"
+.\" Copyright (c) 2015 Kevin Lo <kevlo@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 December 1, 2015
+.Dt URE 4
+.Os
+.Sh NAME
+.Nm ure
+.Nd "RealTek RTL8152 USB to Fast Ethernet controller driver"
+.Sh SYNOPSIS
+To compile this driver into the kernel,
+place the following lines in your
+kernel configuration file:
+.Bd -ragged -offset indent
+.Cd "device uhci"
+.Cd "device ohci"
+.Cd "device usb"
+.Cd "device miibus"
+.Cd "device uether"
+.Cd "device ure"
+.Ed
+.Pp
+Alternatively, to load the driver as a
+module at boot time, place the following line in
+.Xr loader.conf 5 :
+.Bd -literal -offset indent
+if_ure_load="YES"
+.Ed
+.Sh DESCRIPTION
+The
+.Nm
+driver provides support for USB Ethernet adapters based on the RealTek
+RTL8152 USB to Fast Ethernet controller chip.
+.Pp
+The RTL8152 contains an integrated Fast Ethernet MAC, which supports
+both 10 and 100Mbps speeds in either full or half duplex.
+.Pp
+The
+.Nm
+driver supports the following media types:
+.Bl -tag -width ".Cm 10baseT/UTP"
+.It Cm autoselect
+Enable auto selection of the media type and options.
+The user can manually override
+the auto selected mode by adding media options to the
+.Pa /etc/rc.conf
+file.
+.It Cm 10baseT/UTP
+Set 10Mbps operation.
+The
+.Cm mediaopt
+option can also be used to select either
+.Cm full-duplex
+or
+.Cm half-duplex
+modes.
+.It Cm 100baseTX
+Set 100Mbps (Fast Ethernet) operation.
+The
+.Cm mediaopt
+option can also be used to select either
+.Cm full-duplex
+or
+.Cm half-duplex
+modes.
+.El
+.Pp
+The
+.Nm
+driver supports the following media options:
+.Bl -tag -width ".Cm 10baseT/UTP"
+.It Cm full-duplex
+Force full duplex operation.
+.It Cm half-duplex
+Force half duplex operation.
+.El
+.Pp
+For more information on configuring this device, see
+.Xr ifconfig 8 .
+.Sh DIAGNOSTICS
+.Bl -diag
+.It "ure%d: watchdog timeout"
+A packet was queued for transmission and a transmit command was
+issued, however the device failed to acknowledge the transmission
+before a timeout expired.
+.El
+.Sh SEE ALSO
+.Xr arp 4 ,
+.Xr miibus 4 ,
+.Xr netintro 4 ,
+.Xr ng_ether 4 ,
+.Xr ifconfig 8
+.Sh AUTHORS
+The
+.Nm
+driver was written by
+.An Kevin Lo Aq Mt kevlo@FreeBSD.org .