Update to 1.7.0.

Big thanks to Ed Maste for making this happen.

7 files changed, 3189 insertions, 1981 deletions

diff --git a/net/openvswitch/files/ovsdb-server.in b/net/openvswitch/files/ovsdb-server.in
index 4191a93e912b..fecbdc12abc2 100644
--- a/net/openvswitch/files/ovsdb-server.in
+++ b/net/openvswitch/files/ovsdb-server.in
@@ -31,7 +31,7 @@ ovsdb_server_precmd() {
 
 command_args="--detach --pidfile=$pidfile \
 	--remote=punix:$ovsdb_server_sock \
-	--remote=db:Open_vSwitch,managers \
+	--remote=db:Open_vSwitch,manager_options \
 	--private-key=db:SSL,private_key \
 	--certificate=db:SSL,certificate \
 	--bootstrap-ca-cert=db:SSL,ca_cert \
diff --git a/net/openvswitch/files/patch-acinclude.m4 b/net/openvswitch/files/patch-acinclude.m4
deleted file mode 100644
index 87c7938e899b..000000000000
--- a/net/openvswitch/files/patch-acinclude.m4
+++ /dev/null
@@ -1,21 +0,0 @@
---- acinclude.m4.orig	2010-09-10 23:36:43.000000000 +0200
-+++ acinclude.m4	2011-11-02 07:09:19.000000000 +0100
-@@ -220,6 +220,18 @@
-                 [Define to 1 if net/if_packet.h is available.])
-    fi])
- 
-+dnl Checks for net/if_dl.h.
-+AC_DEFUN([OVS_CHECK_IF_DL],
-+  [AC_CHECK_HEADER([net/if_dl.h],
-+                   [HAVE_IF_DL=yes],
-+                   [HAVE_IF_DL=no])
-+   AM_CONDITIONAL([HAVE_IF_DL], [test "$HAVE_IF_DL" = yes])
-+   if test "$HAVE_IF_DL" = yes; then
-+      AC_SEARCH_LIBS([pcap_create], [pcap])
-+      AC_DEFINE([HAVE_IF_DL], [1],
-+                [Define to 1 if net/if_dl.h is available.])
-+   fi])
-+
- dnl Checks for buggy strtok_r.
- dnl
- dnl Some versions of glibc 2.7 has a bug in strtok_r when compiling
diff --git a/net/openvswitch/files/patch-bsd-netdev.diff b/net/openvswitch/files/patch-bsd-netdev.diff
new file mode 100644
index 000000000000..f8ca7428a277
--- /dev/null
+++ b/net/openvswitch/files/patch-bsd-netdev.diff
@@ -0,0 +1,3188 @@
+diff --git INSTALL INSTALL
+new file mode 100644
+index 0000000..671c4a4
+--- /dev/null
++++ INSTALL
+@@ -0,0 +1,341 @@
++           How to Install Open vSwitch on Linux and FreeBSD
++           ================================================
++
++This document describes how to build and install Open vSwitch on a
++generic Linux or FreeBSD host.  If you want to install Open vSwitch on
++a Citrix XenServer, see INSTALL.XenServer instead.
++
++This version of Open vSwitch may be built manually with "configure"
++and "make", as described below.  You may also build Debian packages by
++running "dpkg-buildpackage".
++
++Build Requirements
++------------------
++
++To compile the userspace programs in the Open vSwitch distribution,
++you will need the following software:
++
++    - A make program, e.g. GNU make.  BSD make should also work.
++
++    - The GNU C compiler.  We generally test with version 4.1, 4.2, or
++      4.3.
++
++    - pkg-config.  We test with version 0.22.
++
++    - libssl, from OpenSSL, is optional but recommended if you plan to
++      connect the Open vSwitch to an OpenFlow controller.  libssl is
++      required to establish confidentiality and authenticity in the
++      connections from an Open vSwitch to an OpenFlow controller.  If
++      libssl is installed, then Open vSwitch will automatically build
++      with support for it.
++
++To compile the kernel module on Linux, you must also install the
++following.  If you cannot build or install the kernel module, you may
++use the userspace-only implementation, at a cost in performance.  The
++userspace implementation may also lack some features.  Refer to
++INSTALL.userspace for more information.
++
++    - A supported Linux kernel version.  Please refer to README for a
++      list of supported versions.
++
++      The Open vSwitch datapath requires bridging support
++      (CONFIG_BRIDGE) to be built as a kernel module.  (This is common
++      in kernels provided by Linux distributions.)  The bridge module
++      must not be loaded or in use.  If the bridge module is running
++      (check with "lsmod | grep bridge"), you must remove it ("rmmod
++      bridge") before starting the datapath.
++
++      For optional support of ingress policing, you must enable kernel
++      configuration options NET_CLS_BASIC, NET_SCH_INGRESS, and
++      NET_ACT_POLICE, either built-in or as modules.  (NET_CLS_POLICE is
++      obsolete and not needed.)
++
++      If GRE tunneling is being used it is recommended that the kernel
++      be compiled with IPv6 support (CONFIG_IPV6).  This allows for
++      special handling (such as path MTU discovery) of IPv6 packets.
++
++      To configure HTB or HFSC quality of service with Open vSwitch,
++      you must enable the respective configuration options.
++
++      To use Open vSwitch support for TAP devices, you must enable
++      CONFIG_TUN.
++
++    - To build a kernel module, you need the same version of GCC that
++      was used to build that kernel.
++
++    - A kernel build directory corresponding to the Linux kernel image
++      the module is to run on.  Under Debian and Ubuntu, for example,
++      each linux-image package containing a kernel binary has a
++      corresponding linux-headers package with the required build
++      infrastructure.
++
++If you are working from a Git tree or snapshot (instead of from a
++distribution tarball), or if you modify the Open vSwitch build system
++or the database schema, you will also need the following software:
++
++    - Autoconf version 2.64 or later.
++
++    - Automake version 1.10 or later.
++
++    - Python 2.x, for x >= 4.
++
++If you modify the ovsdbmonitor tool, then you will also need the
++following:
++
++    - pyuic4 from PyQt4 (http://www.riverbankcomputing.co.uk).
++
++To run the unit tests, you also need:
++
++    - Perl.  Version 5.10.1 is known to work.  Earlier versions should
++      also work.
++
++If you modify the vswitchd database schema, then the E-R diagram in
++the ovs-vswitchd.conf.db(5) manpage will be updated properly only if
++you have the following:
++
++    - "dot" from graphviz (http://www.graphviz.org/).
++
++    - Perl.  Version 5.10.1 is known to work.  Earlier versions should
++      also work.
++
++    - Python 2.x, for x >= 4.
++
++If you are going to extensively modify Open vSwitch, please consider
++installing the following to obtain better warnings:
++
++    - "sparse" version 0.4.4 or later
++      (http://www.kernel.org/pub/software/devel/sparse/dist/).
++
++    - GNU make.
++
++Installation Requirements
++-------------------------
++
++The machine on which Open vSwitch is to be installed must have the
++following software:
++
++    - libc compatible with the libc used for build.
++
++    - libssl compatible with the libssl used for build, if OpenSSL was
++      used for the build.
++
++    - On Linux, the same kernel version configured as part of the build.
++
++    - For optional support of ingress policing on Linux, the "tc" program
++      from iproute2 (part of all major distributions and available at
++      http://www.linux-foundation.org/en/Net:Iproute2).
++
++On Linux you should ensure that /dev/urandom exists.  To support TAP
++devices, you must also ensure that /dev/net/tun exists.
++
++To run the ovsdbmonitor tool, the machine must also have the following
++software:
++
++    - Python 2.x, for x >= 4.
++
++    - Python Twisted Conch.
++
++    - Python JSON.
++
++    - PySide or PyQt4.
++
++    - Python Zope interface module.
++
++(On Debian "lenny" the above can be installed with "apt-get install
++python-json python-qt4 python-zopeinterface python-twisted-conch".)
++
++Building and Installing Open vSwitch for Linux or FreeBSD
++=========================================================
++
++Once you have installed all the prerequisites listed above in the Base
++Prerequisites section, follow the procedure below to build.
++
++1. If you pulled the sources directly from an Open vSwitch Git tree,
++   run boot.sh in the top source directory:
++
++      % ./boot.sh
++
++2. In the top source directory, configure the package by running the
++   configure script.  You can usually invoke configure without any
++   arguments:
++
++      % ./configure
++
++   By default all files are installed under /usr/local.  If you want
++   to install into, e.g., /usr and /var instead of /usr/local and
++   /usr/local/var, add options as shown here:
++
++      % ./configure --prefix=/usr --localstatedir=/var
++
++   To use a specific C compiler for compiling Open vSwitch user
++   programs, also specify it on the configure command line, like so:
++
++      % ./configure CC=gcc-4.2
++
++   To build the Linux kernel module, so that you can run the
++   kernel-based switch, pass the location of the kernel build
++   directory on --with-linux.  For example, to build for a running
++   instance of Linux:
++
++      % ./configure --with-linux=/lib/modules/`uname -r`/build
++
++   If you wish to build the kernel module for an architecture other
++   than the architecture of the machine used for the build, you may
++   specify the kernel architecture string using the KARCH variable
++   when invoking the configure script.  For example, to build for MIPS
++   with Linux:
++
++      % ./configure --with-linux=/path/to/linux KARCH=mips
++
++   The configure script accepts a number of other options and honors
++   additional environment variables.  For a full list, invoke
++   configure with the --help option.
++
++3. Run make in the top source directory:
++
++      % make
++
++   On FreeBSD you may need to use GNU make (gmake) or NetBSD make
++   (bmake) instead of the native make.
++
++   For improved warnings if you installed "sparse" (see
++   "Prerequisites"), add C=1 to the "make" command line.
++
++4. Become root by running "su" or another program.
++
++5. Run "make install" to install the executables and manpages into the
++   running system, by default under /usr/local.
++
++6. If you built kernel modules, you may load them with "insmod", e.g.:
++
++      % insmod datapath/linux/openvswitch.ko
++
++   You may need to specify a full path to insmod, e.g. /sbin/insmod.
++   To verify that the modules have been loaded, run "/sbin/lsmod" and
++   check that openvswitch is listed.
++
++   If the "insmod" operation fails, look at the last few kernel log
++   messages (e.g. with "dmesg | tail"):
++
++      - The message "openvswitch: exports duplicate symbol
++        br_should_route_hook (owned by bridge)" means that the bridge
++        module is loaded.  Run "/sbin/rmmod bridge" to remove it.
++
++        If "/sbin/rmmod bridge" fails with "ERROR: Module bridge does
++        not exist in /proc/modules", then the bridge is compiled into
++        the kernel, rather than as a module.  Open vSwitch does not
++        support this configuration (see "Build Requirements", above).
++
++      - The message "openvswitch: exports duplicate symbol
++        dp_ioctl_hook (owned by ofdatapath)" means that the ofdatapath
++        module from the OpenFlow reference implementation is loaded.
++        Run "/sbin/rmmod ofdatapath" to remove it.  (You might have to
++        delete any existing datapaths beforehand, using the "dpctl"
++        program included with the OpenFlow reference implementation.
++        "ovs-dpctl" will not work.)
++
++      - Otherwise, the most likely problem is that Open vSwitch was
++        built for a kernel different from the one into which you are
++        trying to load it.  Run "modinfo" on openvswitch.ko and on
++        a module built for the running kernel, e.g.:
++
++           % /sbin/modinfo openvswitch.ko
++           % /sbin/modinfo /lib/modules/`uname -r`/kernel/net/bridge/bridge.ko
++
++        Compare the "vermagic" lines output by the two commands.  If
++        they differ, then Open vSwitch was built for the wrong kernel.
++
++      - If you decide to report a bug or ask a question related to
++        module loading, please include the output from the "dmesg" and
++        "modinfo" commands mentioned above.
++
++   There is an optional module parameter to openvswitch.ko called
++   vlan_tso that enables TCP segmentation offload over VLANs on NICs
++   that support it. Many drivers do not expose support for TSO on VLANs
++   in a way that Open vSwitch can use but there is no way to detect
++   whether this is the case. If you know that your particular driver can
++   handle it (for example by testing sending large TCP packets over VLANs)
++   then passing in a value of 1 may improve performance. Modules built for
++   Linux kernels 2.6.37 and later, as well as specially patched versions
++   of earlier kernels, do not need this and do not have this parameter. If
++   you do not understand what this means or do not know if your driver
++   will work, do not set this.
++
++7. Initialize the configuration database using ovsdb-tool, e.g.:
++
++      % mkdir -p /usr/local/etc/openvswitch
++      % ovsdb-tool create /usr/local/etc/openvswitch/conf.db vswitchd/vswitch.ovsschema
++
++Startup
++=======
++
++Before starting ovs-vswitchd itself, you need to start its
++configuration database, ovsdb-server.  Each machine on which Open
++vSwitch is installed should run its own copy of ovsdb-server.
++Configure it to use the database you created during step 7 of
++installation, above, to listen on a Unix domain socket, to connect to
++any managers specified in the database itself, and to use the SSL
++configuration in the database:
++
++      % ovsdb-server --remote=punix:/usr/local/var/run/openvswitch/db.sock \
++                     --remote=db:Open_vSwitch,manager_options \
++                     --private-key=db:SSL,private_key \
++                     --certificate=db:SSL,certificate \
++                     --bootstrap-ca-cert=db:SSL,ca_cert \
++                     --pidfile --detach
++
++(If you built Open vSwitch without SSL support, then omit
++--private-key, --certificate, and --bootstrap-ca-cert.)
++
++Then initialize the database using ovs-vsctl.  This is only
++necessary the first time after you create the database with
++ovsdb-tool (but running it at any time is harmless):
++
++      % ovs-vsctl --no-wait init
++
++Then start the main Open vSwitch daemon, telling it to connect to the
++same Unix domain socket:
++
++      % ovs-vswitchd --pidfile --detach
++
++Now you may use ovs-vsctl to set up bridges and other Open vSwitch
++features.  For example, to create a bridge named br0 and add ports
++eth0 and vif1.0 to it:
++
++      % ovs-vsctl add-br br0
++      % ovs-vsctl add-port br0 eth0
++      % ovs-vsctl add-port br0 vif1.0
++
++Please refer to ovs-vsctl(8) for more details.
++
++Upgrading
++=========
++
++When you upgrade Open vSwitch from one version to another, you should
++also upgrade the database schema:
++
++1. Stop the Open vSwitch daemons, e.g.:
++
++      % kill `cd /usr/local/var/run/openvswitch && cat ovsdb-server.pid ovs-vswitchd.pid`
++
++2. Install the new Open vSwitch release.
++
++3. Upgrade the database, in one of the following two ways:
++
++      - If there is no important data in your database, then you may
++        delete the database file and recreate it with ovsdb-tool,
++        following the instructions under "Building and Installing Open
++        vSwitch for Linux or FreeBSD".
++
++      - If you want to preserve the contents of your database, back it
++        up first, then use "ovsdb-tool convert" to upgrade it, e.g.:
++
++        % ovsdb-tool convert /usr/local/etc/openvswitch/conf.db vswitchd/vswitch.ovsschema
++
++4. Start the Open vSwitch daemons as described under "Building and
++   Installing Open vSwitch for Linux or FreeBSD" above.
++
++Bug Reporting
++-------------
++
++Please report problems to bugs@openvswitch.org.
+diff --git INSTALL.KVM INSTALL.KVM
+index 61620e5..18a7bd4 100644
+--- INSTALL.KVM
++++ INSTALL.KVM
+@@ -3,12 +3,12 @@
+ 
+ This document describes how to use Open vSwitch with the Kernel-based
+ Virtual Machine (KVM). This document assumes that you have read and
+-followed INSTALL.Linux to get Open vSwitch setup on your Linux system.
++followed INSTALL to get Open vSwitch setup on your Linux system.
+ 
+ Setup
+ -----
+ 
+-First, follow the setup instructions in INSTALL.Linux to get a working
++First, follow the setup instructions in INSTALL to get a working
+ Open vSwitch installation.
+ 
+ KVM uses tunctl to handle various bridging modes, which you can 
+@@ -43,7 +43,7 @@ switch='br0'
+ ovs-vsctl del-port ${switch} $1
+ --------------------------------------------------------------------
+ 
+-At the end of INSTALL.Linux, it describes basic usage of creating 
++At the end of INSTALL, it describes basic usage of creating
+ bridges and ports. If you haven't already, create a bridge named
+ br0 with the following command:
+ 
+diff --git INSTALL.Libvirt INSTALL.Libvirt
+index 4f31831..1bc45d5 100644
+--- INSTALL.Libvirt
++++ INSTALL.Libvirt
+@@ -4,7 +4,7 @@
+ This document describes how to use Open vSwitch with Libvirt 0.9.11 or
+ later. The Open vSwitch support in Libvirt 0.9.11 eliminates the need to
+ use OVS Linux Bridge compatibility layer (brcompatd) and interface up/down
+-scripts. This document assumes that you followed INSTALL.Linux or installed
++scripts. This document assumes that you followed INSTALL or installed
+ Open vSwitch from distribution packaging such as a .deb or .rpm. The Open
+ vSwitch support is included by default in Libvirt 0.9.11. Consult
+ www.libvirt.org for instructions on how to build the latest Libvirt, if your
+diff --git INSTALL.Linux INSTALL.Linux
+deleted file mode 100644
+index 78152b6..0000000
+--- INSTALL.Linux
++++ /dev/null
+@@ -1,338 +0,0 @@
+-                 How to Install Open vSwitch on Linux
+-                 ====================================
+-
+-This document describes how to build and install Open vSwitch on a
+-generic Linux host.  If you want to install Open vSwitch on a Citrix
+-XenServer, see INSTALL.XenServer instead.
+-
+-This version of Open vSwitch may be built manually with "configure"
+-and "make", as described below.  You may also build Debian packages by
+-running "dpkg-buildpackage".
+-
+-Build Requirements
+-------------------
+-
+-To compile the userspace programs in the Open vSwitch distribution,
+-you will need the following software:
+-
+-    - A make program, e.g. GNU make.  BSD make should also work.
+-
+-    - The GNU C compiler.  We generally test with version 4.1, 4.2, or
+-      4.3.
+-
+-    - pkg-config.  We test with version 0.22.
+-
+-    - libssl, from OpenSSL, is optional but recommended if you plan to
+-      connect the Open vSwitch to an OpenFlow controller.  libssl is
+-      required to establish confidentiality and authenticity in the
+-      connections from an Open vSwitch to an OpenFlow controller.  If
+-      libssl is installed, then Open vSwitch will automatically build
+-      with support for it.
+-
+-To compile the kernel module, you must also install the following.  If
+-you cannot build or install the kernel module, you may use the
+-userspace-only implementation, at a cost in performance.  The
+-userspace implementation may also lack some features.  Refer to
+-INSTALL.userspace for more information.
+-
+-    - A supported Linux kernel version.  Please refer to README for a
+-      list of supported versions.
+-
+-      The Open vSwitch datapath requires bridging support
+-      (CONFIG_BRIDGE) to be built as a kernel module.  (This is common
+-      in kernels provided by Linux distributions.)  The bridge module
+-      must not be loaded or in use.  If the bridge module is running
+-      (check with "lsmod | grep bridge"), you must remove it ("rmmod
+-      bridge") before starting the datapath.
+-
+-      For optional support of ingress policing, you must enable kernel
+-      configuration options NET_CLS_BASIC, NET_SCH_INGRESS, and
+-      NET_ACT_POLICE, either built-in or as modules.  (NET_CLS_POLICE is
+-      obsolete and not needed.)
+-
+-      If GRE tunneling is being used it is recommended that the kernel
+-      be compiled with IPv6 support (CONFIG_IPV6).  This allows for
+-      special handling (such as path MTU discovery) of IPv6 packets.
+-
+-      To configure HTB or HFSC quality of service with Open vSwitch,
+-      you must enable the respective configuration options.
+-
+-      To use Open vSwitch support for TAP devices, you must enable
+-      CONFIG_TUN.
+-
+-    - To build a kernel module, you need the same version of GCC that
+-      was used to build that kernel.
+-
+-    - A kernel build directory corresponding to the Linux kernel image
+-      the module is to run on.  Under Debian and Ubuntu, for example,
+-      each linux-image package containing a kernel binary has a
+-      corresponding linux-headers package with the required build
+-      infrastructure.
+-
+-If you are working from a Git tree or snapshot (instead of from a
+-distribution tarball), or if you modify the Open vSwitch build system
+-or the database schema, you will also need the following software:
+-
+-    - Autoconf version 2.64 or later.
+-
+-    - Automake version 1.10 or later.
+-
+-    - Python 2.x, for x >= 4.
+-
+-If you modify the ovsdbmonitor tool, then you will also need the
+-following:
+-
+-    - pyuic4 from PyQt4 (http://www.riverbankcomputing.co.uk).
+-
+-To run the unit tests, you also need:
+-
+-    - Perl.  Version 5.10.1 is known to work.  Earlier versions should
+-      also work.
+-
+-If you modify the vswitchd database schema, then the E-R diagram in
+-the ovs-vswitchd.conf.db(5) manpage will be updated properly only if
+-you have the following:
+-
+-    - "dot" from graphviz (http://www.graphviz.org/).
+-
+-    - Perl.  Version 5.10.1 is known to work.  Earlier versions should
+-      also work.
+-
+-    - Python 2.x, for x >= 4.
+-
+-If you are going to extensively modify Open vSwitch, please consider
+-installing the following to obtain better warnings:
+-
+-    - "sparse" version 0.4.4 or later
+-      (http://www.kernel.org/pub/software/devel/sparse/dist/).
+-
+-    - GNU make.
+-
+-Installation Requirements
+--------------------------
+-
+-The machine on which Open vSwitch is to be installed must have the
+-following software:
+-
+-    - libc compatible with the libc used for build.
+-
+-    - libssl compatible with the libssl used for build, if OpenSSL was
+-      used for the build.
+-
+-    - The Linux kernel version configured as part of the build.
+-
+-    - For optional support of ingress policing, the "tc" program from
+-      iproute2 (part of all major distributions and available at
+-      http://www.linux-foundation.org/en/Net:Iproute2).
+-
+-You should ensure that /dev/urandom exists.  To support TAP devices,
+-you must also ensure that /dev/net/tun exists.
+-
+-To run the ovsdbmonitor tool, the machine must also have the following
+-software:
+-
+-    - Python 2.x, for x >= 4.
+-
+-    - Python Twisted Conch.
+-
+-    - Python JSON.
+-
+-    - PySide or PyQt4.
+-
+-    - Python Zope interface module.
+-
+-(On Debian "lenny" the above can be installed with "apt-get install
+-python-json python-qt4 python-zopeinterface python-twisted-conch".)
+-
+-Building and Installing Open vSwitch for Linux
+-==============================================
+-
+-Once you have installed all the prerequisites listed above in the Base
+-Prerequisites section, follow the procedure below to build.
+-
+-1. If you pulled the sources directly from an Open vSwitch Git tree, 
+-   run boot.sh in the top source directory:
+-
+-      % ./boot.sh
+-
+-2. In the top source directory, configure the package by running the
+-   configure script.  You can usually invoke configure without any
+-   arguments:
+-
+-      % ./configure
+-
+-   By default all files are installed under /usr/local.  If you want
+-   to install into, e.g., /usr and /var instead of /usr/local and
+-   /usr/local/var, add options as shown here:
+-
+-      % ./configure --prefix=/usr --localstatedir=/var
+-
+-   To use a specific C compiler for compiling Open vSwitch user
+-   programs, also specify it on the configure command line, like so:
+-
+-      % ./configure CC=gcc-4.2
+-
+-   To build the Linux kernel module, so that you can run the
+-   kernel-based switch, pass the location of the kernel build
+-   directory on --with-linux.  For example, to build for a running
+-   instance of Linux:
+-
+-      % ./configure --with-linux=/lib/modules/`uname -r`/build
+-
+-   If you wish to build the kernel module for an architecture other
+-   than the architecture of the machine used for the build, you may
+-   specify the kernel architecture string using the KARCH variable
+-   when invoking the configure script.  For example, to build for MIPS
+-   with Linux:
+-
+-      % ./configure --with-linux=/path/to/linux KARCH=mips
+-
+-   The configure script accepts a number of other options and honors
+-   additional environment variables.  For a full list, invoke
+-   configure with the --help option.
+-
+-3. Run make in the top source directory: 
+-
+-      % make
+-
+-   For improved warnings if you installed "sparse" (see
+-   "Prerequisites"), add C=1 to the "make" command line.
+-
+-4. Become root by running "su" or another program.
+-
+-5. Run "make install" to install the executables and manpages into the
+-   running system, by default under /usr/local.
+-
+-6. If you built kernel modules, you may load them with "insmod", e.g.:
+-
+-      % insmod datapath/linux/openvswitch.ko
+-
+-   You may need to specify a full path to insmod, e.g. /sbin/insmod.
+-   To verify that the modules have been loaded, run "/sbin/lsmod" and
+-   check that openvswitch is listed.
+-
+-   If the "insmod" operation fails, look at the last few kernel log
+-   messages (e.g. with "dmesg | tail"):
+-
+-      - The message "openvswitch: exports duplicate symbol
+-        br_should_route_hook (owned by bridge)" means that the bridge
+-        module is loaded.  Run "/sbin/rmmod bridge" to remove it.
+-
+-        If "/sbin/rmmod bridge" fails with "ERROR: Module bridge does
+-        not exist in /proc/modules", then the bridge is compiled into
+-        the kernel, rather than as a module.  Open vSwitch does not
+-        support this configuration (see "Build Requirements", above).
+-
+-      - The message "openvswitch: exports duplicate symbol
+-        dp_ioctl_hook (owned by ofdatapath)" means that the ofdatapath
+-        module from the OpenFlow reference implementation is loaded.
+-        Run "/sbin/rmmod ofdatapath" to remove it.  (You might have to
+-        delete any existing datapaths beforehand, using the "dpctl"
+-        program included with the OpenFlow reference implementation.
+-        "ovs-dpctl" will not work.)
+-
+-      - Otherwise, the most likely problem is that Open vSwitch was
+-        built for a kernel different from the one into which you are
+-        trying to load it.  Run "modinfo" on openvswitch.ko and on
+-        a module built for the running kernel, e.g.:
+-
+-           % /sbin/modinfo openvswitch.ko
+-           % /sbin/modinfo /lib/modules/`uname -r`/kernel/net/bridge/bridge.ko
+-
+-        Compare the "vermagic" lines output by the two commands.  If
+-        they differ, then Open vSwitch was built for the wrong kernel.
+-
+-      - If you decide to report a bug or ask a question related to
+-        module loading, please include the output from the "dmesg" and
+-        "modinfo" commands mentioned above.
+-
+-   There is an optional module parameter to openvswitch.ko called
+-   vlan_tso that enables TCP segmentation offload over VLANs on NICs
+-   that support it. Many drivers do not expose support for TSO on VLANs
+-   in a way that Open vSwitch can use but there is no way to detect
+-   whether this is the case. If you know that your particular driver can
+-   handle it (for example by testing sending large TCP packets over VLANs)
+-   then passing in a value of 1 may improve performance. Modules built for
+-   Linux kernels 2.6.37 and later, as well as specially patched versions
+-   of earlier kernels, do not need this and do not have this parameter. If
+-   you do not understand what this means or do not know if your driver
+-   will work, do not set this.
+-
+-7. Initialize the configuration database using ovsdb-tool, e.g.:
+-
+-      % mkdir -p /usr/local/etc/openvswitch
+-      % ovsdb-tool create /usr/local/etc/openvswitch/conf.db vswitchd/vswitch.ovsschema
+-
+-Startup
+-=======
+-
+-Before starting ovs-vswitchd itself, you need to start its
+-configuration database, ovsdb-server.  Each machine on which Open
+-vSwitch is installed should run its own copy of ovsdb-server.
+-Configure it to use the database you created during step 7 of
+-installation, above, to listen on a Unix domain socket, to connect to
+-any managers specified in the database itself, and to use the SSL
+-configuration in the database:
+-
+-      % ovsdb-server --remote=punix:/usr/local/var/run/openvswitch/db.sock \
+-                     --remote=db:Open_vSwitch,manager_options \
+-                     --private-key=db:SSL,private_key \
+-                     --certificate=db:SSL,certificate \
+-                     --bootstrap-ca-cert=db:SSL,ca_cert \
+-                     --pidfile --detach
+-
+-(If you built Open vSwitch without SSL support, then omit
+---private-key, --certificate, and --bootstrap-ca-cert.)
+-
+-Then initialize the database using ovs-vsctl.  This is only
+-necessary the first time after you create the database with
+-ovsdb-tool (but running it at any time is harmless):
+-
+-      % ovs-vsctl --no-wait init
+-
+-Then start the main Open vSwitch daemon, telling it to connect to the
+-same Unix domain socket:
+-
+-      % ovs-vswitchd --pidfile --detach
+-
+-Now you may use ovs-vsctl to set up bridges and other Open vSwitch
+-features.  For example, to create a bridge named br0 and add ports
+-eth0 and vif1.0 to it:
+-
+-      % ovs-vsctl add-br br0
+-      % ovs-vsctl add-port br0 eth0
+-      % ovs-vsctl add-port br0 vif1.0
+-
+-Please refer to ovs-vsctl(8) for more details.
+-
+-Upgrading
+-=========
+-
+-When you upgrade Open vSwitch from one version to another, you should
+-also upgrade the database schema:
+-
+-1. Stop the Open vSwitch daemons, e.g.:
+-
+-      % kill `cd /usr/local/var/run/openvswitch && cat ovsdb-server.pid ovs-vswitchd.pid`
+-
+-2. Install the new Open vSwitch release.
+-
+-3. Upgrade the database, in one of the following two ways:
+-
+-      - If there is no important data in your database, then you may
+-        delete the database file and recreate it with ovsdb-tool,
+-        following the instructions under "Building and Installing Open
+-        vSwitch for Linux".
+-
+-      - If you want to preserve the contents of your database, back it
+-        up first, then use "ovsdb-tool convert" to upgrade it, e.g.:
+-
+-        % ovsdb-tool convert /usr/local/etc/openvswitch/conf.db vswitchd/vswitch.ovsschema
+-
+-4. Start the Open vSwitch daemons as described under "Building and
+-   Installing Open vSwitch for Linux" above.
+-
+-Bug Reporting
+--------------
+-
+-Please report problems to bugs@openvswitch.org.
+diff --git INSTALL.RHEL INSTALL.RHEL
+index 039a857..ff79c89 100644
+--- INSTALL.RHEL
++++ INSTALL.RHEL
+@@ -3,7 +3,7 @@
+ 
+ This document describes how to build and install Open vSwitch on a Red
+ Hat Enterprise Linux (RHEL) host.  If you want to install Open vSwitch
+-on a generic Linux host, see INSTALL.Linux instead.
++on a generic Linux host, see INSTALL instead.
+ 
+ We have tested these instructions with RHEL 5.6 and RHEL 6.0.
+ 
+diff --git INSTALL.SSL INSTALL.SSL
+index f322b41..8511b69 100644
+--- INSTALL.SSL
++++ INSTALL.SSL
+@@ -7,8 +7,8 @@ with OpenSSL.  SSL support ensures integrity and confidentiality of
+ the OpenFlow connections, increasing network security.
+ 
+ This file explains how to configure an Open vSwitch to connect to an
+-OpenFlow controller over SSL.  Refer to INSTALL.Linux for instructions
+-on building Open vSwitch with SSL support.
++OpenFlow controller over SSL.  Refer to INSTALL for instructions on
++building Open vSwitch with SSL support.
+ 
+ Open vSwitch uses TLS version 1.0 or later (TLSv1), as specified by
+ RFC 2246, which is very similar to SSL version 3.0.  TLSv1 was
+diff --git INSTALL.XenServer INSTALL.XenServer
+index e45d5bc..7a4dd76 100644
+--- INSTALL.XenServer
++++ INSTALL.XenServer
+@@ -3,7 +3,7 @@
+ 
+ This document describes how to build and install Open vSwitch on a
+ Citrix XenServer host.  If you want to install Open vSwitch on a
+-generic Linux host, see INSTALL.Linux instead.
++generic Linux or BSD host, see INSTALL instead.
+ 
+ These instructions have been tested with XenServer 5.6 FP1.
+ 
+@@ -19,8 +19,8 @@ RPMs for Citrix XenServer is the DDK VM available from Citrix.
+    ./configure; make dist" in the Git tree.  You cannot run this in
+    the DDK VM, because it lacks tools that are necessary to bootstrap
+    the Open vSwitch distribution.  Instead, you must run this on a
+-   machine that has the tools listed in INSTALL.Linux as prerequisites
+-   for building from a Git tree.
++   machine that has the tools listed in INSTALL as prerequisites for
++   building from a Git tree.
+ 
+ 2. Copy the distribution tarball into /usr/src/redhat/SOURCES inside
+    the DDK VM.
+diff --git INSTALL.bridge INSTALL.bridge
+index dec09d8..af20bff 100644
+--- INSTALL.bridge
++++ INSTALL.bridge
+@@ -25,7 +25,7 @@ that the Open vSwitch kernel modules are loaded before the Linux
+ kernel bridge module.
+ 
+ 1. Build, install, and start up the Open vSwitch kernel modules and
+-   userspace programs as described in INSTALL.Linux.
++   userspace programs as described in INSTALL.
+ 
+    It is important to run "make install", because some Open vSwitch
+    programs expect to find files in locations selected at installation
+diff --git INSTALL.userspace INSTALL.userspace
+index 6e6fcd4..feb108c 100644
+--- INSTALL.userspace
++++ INSTALL.userspace
+@@ -17,7 +17,7 @@ Building and Installing
+ -----------------------
+ 
+ The requirements and procedure for building, installing, and
+-configuring Open vSwitch are the same as those given in INSTALL.Linux.
++configuring Open vSwitch are the same as those given in INSTALL.
+ You may omit configuring, building, and installing the kernel module,
+ and the related requirements.
+ 
+@@ -31,6 +31,10 @@ The tun device must also exist as /dev/net/tun.  If it does not exist,
+ then create /dev/net (if necessary) with "mkdir /dev/net", then create
+ /dev/net/tun with "mknod /dev/net/tun c 10 200".
+ 
++On FreeBSD, the userspace switch additionally requires the kernel
++tap(4) driver to be available, either built into the kernel or loaded
++as a module.
++
+ Using the Userspace Datapath with ovs-vswitchd
+ ----------------------------------------------
+ 
+diff --git Makefile.am Makefile.am
+index 91adf05..cbe94a6 100644
+--- Makefile.am
++++ Makefile.am
+@@ -33,9 +33,9 @@ PYCOV_CLEAN_FILES = build-aux/check-structs,cover
+ EXTRA_DIST = \
+ 	CodingStyle \
+ 	DESIGN \
++	INSTALL \
+ 	INSTALL.KVM \
+ 	INSTALL.Libvirt \
+-	INSTALL.Linux \
+ 	INSTALL.RHEL \
+ 	INSTALL.SSL \
+ 	INSTALL.XenServer \
+diff --git NOTICE NOTICE
+index 912d7b8..dafd25f 100644
+--- NOTICE
++++ NOTICE
+@@ -4,6 +4,9 @@ available at http://www.apache.org/licenses/LICENSE-2.0.html
+ Open vSwitch
+ Copyright (c) 2007, 2008, 2009, 2010, 2011 Nicira, Inc.
+ 
++Open vSwitch BSD port
++Copyright (c) 2011 Gaetano Catalli
++
+ Apache Portable Runtime
+ Copyright 2008 The Apache Software Foundation.
+ 
+diff --git README README
+index 251a92e..3ce45b7 100644
+--- README
++++ README
+@@ -88,7 +88,7 @@ Open vSwitch also provides some tools:
+ What other documentation is available?
+ --------------------------------------
+ 
+-To install Open vSwitch on a regular Linux machine, read INSTALL.Linux.
++To install Open vSwitch on a regular Linux machine, read INSTALL.
+ 
+ To use Open vSwitch as a drop-in replacement for the Linux bridge,
+ read INSTALL.bridge.
+@@ -99,7 +99,7 @@ or resource pool, read INSTALL.XenServer.
+ To build RPMs for installing Open vSwitch on a Red Hat Enterprise
+ Linux host, read INSTALL.RHEL.
+ 
+-To use Open vSwitch with KVM on Linux, read INSTALL.Linux, then
++To use Open vSwitch with KVM on Linux, read INSTALL, then
+ INSTALL.KVM.
+ 
+ To use Open vSwitch with Libvirt, read INSTALL.Libvirt.
+diff --git acinclude.m4 acinclude.m4
+index d33653d..51e784b 100644
+--- acinclude.m4
++++ acinclude.m4
+@@ -287,6 +287,17 @@ AC_DEFUN([OVS_CHECK_IF_PACKET],
+                 [Define to 1 if net/if_packet.h is available.])
+    fi])
+ 
++dnl Checks for net/if_dl.h.
++AC_DEFUN([OVS_CHECK_IF_DL],
++  [AC_CHECK_HEADER([net/if_dl.h],
++                   [HAVE_IF_DL=yes],
++                   [HAVE_IF_DL=no])
++   AM_CONDITIONAL([HAVE_IF_DL], [test "$HAVE_IF_DL" = yes])
++   if test "$HAVE_IF_DL" = yes; then
++      AC_DEFINE([HAVE_IF_DL], [1],
++                [Define to 1 if net/if_dl.h is available.])
++   fi])
++
+ dnl Checks for buggy strtok_r.
+ dnl
+ dnl Some versions of glibc 2.7 has a bug in strtok_r when compiling
+diff --git configure.ac configure.ac
+index 1160cdb..5692b86 100644
+--- configure.ac
++++ configure.ac
+@@ -41,6 +41,7 @@ AC_SYS_LARGEFILE
+ AC_SEARCH_LIBS([pow], [m])
+ AC_SEARCH_LIBS([clock_gettime], [rt])
+ AC_SEARCH_LIBS([timer_create], [rt])
++AC_SEARCH_LIBS([pcap_open_live], [pcap])
+ 
+ OVS_CHECK_COVERAGE
+ OVS_CHECK_NDEBUG
+@@ -52,6 +53,7 @@ OVS_CHECK_PYUIC4
+ OVS_CHECK_OVSDBMONITOR
+ OVS_CHECK_DOT
+ OVS_CHECK_IF_PACKET
++OVS_CHECK_IF_DL
+ OVS_CHECK_STRTOK_R
+ AC_CHECK_MEMBERS([struct stat.st_mtim.tv_nsec, struct stat.st_mtimensec],
+   [], [], [[#include <sys/stat.h>]])
+diff --git debian/copyright.in debian/copyright.in
+index 71aa680..16e5559 100644
+--- debian/copyright.in
++++ debian/copyright.in
+@@ -12,6 +12,7 @@ Upstream Copyright Holders:
+ 	Copyright (c) 2010 Jean Tourrilhes - HP-Labs.
+ 	Copyright (c) 2008,2009,2010 Citrix Systems, Inc.
+ 	and authors listed above.
++	Copyright (c) 2011 Gaetano Catalli
+ 
+ License:
+ 
+diff --git lib/automake.mk lib/automake.mk
+index 6217526..13622b3 100644
+--- lib/automake.mk
++++ lib/automake.mk
+@@ -230,6 +230,14 @@ lib_libopenvswitch_a_SOURCES += \
+ 	lib/route-table.h
+ endif
+ 
++if HAVE_IF_DL
++lib_libopenvswitch_a_SOURCES += \
++	lib/netdev-bsd.c \
++	lib/rtbsd.c \
++	lib/rtbsd.h \
++	lib/route-table-bsd.c
++endif
++
+ if HAVE_OPENSSL
+ lib_libopenvswitch_a_SOURCES += lib/stream-ssl.c
+ nodist_lib_libopenvswitch_a_SOURCES += lib/dhparams.c
+diff --git lib/netdev-bsd.c lib/netdev-bsd.c
+new file mode 100644
+index 0000000..0b1a37c
+--- /dev/null
++++ lib/netdev-bsd.c
+@@ -0,0 +1,1485 @@
++/*
++ * Copyright (c) 2011 Gaetano Catalli.
++ *
++ * Licensed under the Apache License, Version 2.0 (the "License");
++ * you may not use this file except in compliance with the License.
++ * You may obtain a copy of the License at:
++ *
++ *     http://www.apache.org/licenses/LICENSE-2.0
++ *
++ * Unless required by applicable law or agreed to in writing, software
++ * distributed under the License is distributed on an "AS IS" BASIS,
++ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
++ * See the License for the specific language governing permissions and
++ * limitations under the License.
++ */
++
++#include <config.h>
++
++#include <stdlib.h>
++#include <config.h>
++#include <assert.h>
++#include <errno.h>
++#include <fcntl.h>
++#include <sys/types.h>
++#include <sys/time.h>
++#include <sys/ioctl.h>
++#include <sys/socket.h>
++#include <sys/sockio.h>
++#include <ifaddrs.h>
++#include <pcap/pcap.h>
++#include <net/if.h>
++#include <net/if_dl.h>
++#include <net/if_media.h>
++#include <net/if_tap.h>
++#include <netinet/in.h>
++#include <net/if_mib.h>
++#include <poll.h>
++#include <string.h>
++#include <unistd.h>
++#include <sys/sysctl.h>
++
++#include "rtbsd.h"
++#include "coverage.h"
++#include "dynamic-string.h"
++#include "fatal-signal.h"
++#include "netdev-provider.h"
++#include "ofpbuf.h"
++#include "openflow/openflow.h"
++#include "packets.h"
++#include "poll-loop.h"
++#include "socket-util.h"
++#include "shash.h"
++#include "svec.h"
++#include "vlog.h"
++
++VLOG_DEFINE_THIS_MODULE(netdev_bsd);
++
++
++/*
++ * This file implements objects to access interfaces.
++ * Externally, interfaces are represented by two structures:
++ *   + struct netdev_dev, representing a network device,
++ *     containing e.g. name and a refcount;
++ *     We can have private variables by embedding the
++ *     struct netdev_dev into our own structure
++ *     (e.g. netdev_dev_bsd)
++ *
++ *   + struct netdev, representing an instance of an open netdev_dev.
++ *     The structure contains a pointer to the 'struct netdev'
++ *     representing the device. Again, private information
++ *     such as file descriptor etc. are stored in our
++ *     own struct netdev_bsd which includes a struct netdev.
++ *
++ * Both 'struct netdev' and 'struct netdev_dev' are referenced
++ * in containers which hold pointers to the data structures.
++ * We can reach our own struct netdev_XXX_bsd by putting a
++ * struct netdev_XXX within our own struct, and using CONTAINER_OF
++ * to access the parent structure.
++ */
++struct netdev_bsd {
++    struct netdev netdev;
++
++    int netdev_fd;   /* Selectable file descriptor for the network device.
++                        This descriptor will be used for polling operations */
++
++    pcap_t *pcap_handle;  /* Packet capture descriptor for a system network
++                             device */
++};
++
++struct netdev_dev_bsd {
++    struct netdev_dev netdev_dev;
++    unsigned int cache_valid;
++    unsigned int change_seq;
++
++    int ifindex;
++    uint8_t etheraddr[ETH_ADDR_LEN];
++    struct in_addr in4;
++    struct in6_addr in6;
++    int mtu;
++    int carrier;
++
++    bool tap_opened;
++    int tap_fd;         /* TAP character device, if any */
++};
++
++
++enum {
++    VALID_IFINDEX = 1 << 0,
++    VALID_ETHERADDR = 1 << 1,
++    VALID_IN4 = 1 << 2,
++    VALID_IN6 = 1 << 3,
++    VALID_MTU = 1 << 4,
++    VALID_CARRIER = 1 << 5
++};
++
++/* An AF_INET socket (used for ioctl operations). */
++static int af_inet_sock = -1;
++
++#define PCAP_SNAPLEN 2048
++
++
++/*
++ * Notifier used to invalidate device informations in case of status change.
++ *
++ * It will be registered with a 'rtbsd_notifier_register()' when the first
++ * device will be created with the call of either 'netdev_bsd_tap_create()' or
++ * 'netdev_bsd_system_create()'.
++ *
++ * The callback associated with this notifier ('netdev_bsd_cache_cb()') will
++ * invalidate cached information about the device.
++ */
++static struct rtbsd_notifier netdev_bsd_cache_notifier;
++static int cache_notifier_refcount;
++
++static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(5, 20);
++
++static int netdev_bsd_do_ioctl(const struct netdev *, struct ifreq *,
++                                 unsigned long cmd, const char *cmd_name);
++static void destroy_tap(int fd, const char *name);
++static int get_flags(const struct netdev *, int *flagsp);
++static int set_flags(struct netdev *, int flags);
++static int do_set_addr(struct netdev *netdev,
++                       int ioctl_nr, const char *ioctl_name,
++                       struct in_addr addr);
++static int get_etheraddr(const char *netdev_name, uint8_t ea[ETH_ADDR_LEN]);
++static int set_etheraddr(const char *netdev_name, int hwaddr_family,
++                         int hwaddr_len, const uint8_t[ETH_ADDR_LEN]);
++static int get_ifindex(const struct netdev *, int *ifindexp);
++
++static int netdev_bsd_init(void);
++
++static bool
++is_netdev_bsd_class(const struct netdev_class *netdev_class)
++{
++    return netdev_class->init == netdev_bsd_init;
++}
++
++static struct netdev_bsd *
++netdev_bsd_cast(const struct netdev *netdev)
++{
++    assert(is_netdev_bsd_class(netdev_dev_get_class(netdev_get_dev(netdev))));
++    return CONTAINER_OF(netdev, struct netdev_bsd, netdev);
++}
++
++static struct netdev_dev_bsd *
++netdev_dev_bsd_cast(const struct netdev_dev *netdev_dev)
++{
++    assert(is_netdev_bsd_class(netdev_dev_get_class(netdev_dev)));
++    return CONTAINER_OF(netdev_dev, struct netdev_dev_bsd, netdev_dev);
++}
++
++/* Initialize the AF_INET socket used for ioctl operations */
++static int
++netdev_bsd_init(void)
++{
++    static int status = -1;
++
++    if (status >= 0) {  /* already initialized */
++        return status;
++    }
++
++    af_inet_sock = socket(AF_INET, SOCK_DGRAM, 0);
++    status = af_inet_sock >= 0 ? 0 : errno;
++
++    if (status) {
++        VLOG_ERR("failed to create inet socket: %s", strerror(status));
++    }
++
++    return status;
++}
++
++/*
++ * Perform periodic work needed by netdev. In BSD netdevs it checks for any
++ * interface status changes, and eventually calls all the user callbacks.
++ */
++static void
++netdev_bsd_run(void)
++{
++    rtbsd_notifier_run();
++}
++
++/*
++ * Arranges for poll_block() to wake up if the "run" member function needs to
++ * be called.
++ */
++static void
++netdev_bsd_wait(void)
++{
++    rtbsd_notifier_wait();
++}
++
++static void
++netdev_dev_bsd_changed(struct netdev_dev_bsd *dev)
++{
++    dev->change_seq++;
++    if (!dev->change_seq) {
++        dev->change_seq++;
++    }
++}
++
++/* Invalidate cache in case of interface status change. */
++static void
++netdev_bsd_cache_cb(const struct rtbsd_change *change,
++                      void *aux OVS_UNUSED)
++{
++    struct netdev_dev_bsd *dev;
++
++    if (change) {
++        struct netdev_dev *base_dev = netdev_dev_from_name(change->if_name);
++
++        if (base_dev) {
++            const struct netdev_class *netdev_class =
++                                                netdev_dev_get_class(base_dev);
++
++            if (is_netdev_bsd_class(netdev_class)) {
++                dev = netdev_dev_bsd_cast(base_dev);
++                dev->cache_valid = 0;
++                netdev_dev_bsd_changed(dev);
++            }
++        }
++    } else {
++        /*
++         * XXX the API is lacking, we should be able to iterate on the list of
++         * netdevs without having to store the info in a temp shash.
++         */
++        struct shash device_shash;
++        struct shash_node *node;
++
++        shash_init(&device_shash);
++        netdev_dev_get_devices(&netdev_bsd_class, &device_shash);
++        SHASH_FOR_EACH (node, &device_shash) {
++            dev = node->data;
++            dev->cache_valid = 0;
++            netdev_dev_bsd_changed(dev);
++        }
++        shash_destroy(&device_shash);
++    }
++}
++
++static int
++cache_notifier_ref(void)
++{
++    int ret = 0;
++
++    if (!cache_notifier_refcount) {
++        ret = rtbsd_notifier_register(&netdev_bsd_cache_notifier,
++                                                netdev_bsd_cache_cb, NULL);
++        if (ret) {
++            return ret;
++        }
++    }
++    cache_notifier_refcount++;
++    return 0;
++}
++
++static int
++cache_notifier_unref(void)
++{
++    cache_notifier_refcount--;
++    if (cache_notifier_refcount == 0) {
++        rtbsd_notifier_unregister(&netdev_bsd_cache_notifier);
++    }
++    return 0;
++}
++
++/* Allocate a netdev_dev_bsd structure */
++static int
++netdev_bsd_create_system(const struct netdev_class *class, const char *name,
++                  struct netdev_dev **netdev_devp)
++{
++    struct netdev_dev_bsd *netdev_dev;
++    int error;
++
++    error = cache_notifier_ref();
++    if (error) {
++        return error;
++    }
++
++    netdev_dev = xzalloc(sizeof *netdev_dev);
++    netdev_dev->change_seq = 1;
++    netdev_dev_init(&netdev_dev->netdev_dev, name, class);
++    *netdev_devp = &netdev_dev->netdev_dev;
++
++    return 0;
++}
++
++/*
++ * Allocate a netdev_dev_bsd structure with 'tap' class.
++ */
++static int
++netdev_bsd_create_tap(const struct netdev_class *class, const char *name,
++                  struct netdev_dev **netdev_devp)
++{
++    struct netdev_dev_bsd *netdev_dev = NULL;
++    int error = 0;
++    struct ifreq ifr;
++
++    error = cache_notifier_ref();
++    if (error) {
++        goto error;
++    }
++
++    /* allocate the device structure and set the internal flag */
++    netdev_dev = xzalloc(sizeof *netdev_dev);
++
++    memset(&ifr, 0, sizeof(ifr));
++
++    /* Create a tap device by opening /dev/tap.  The TAPGIFNAME ioctl is used
++     * to retrieve the name of the tap device. */
++    netdev_dev->tap_fd = open("/dev/tap", O_RDWR);
++    netdev_dev->change_seq = 1;
++    if (netdev_dev->tap_fd < 0) {
++        error = errno;
++        VLOG_WARN("opening \"/dev/tap\" failed: %s", strerror(error));
++        goto error_undef_notifier;
++    }
++
++    /* Retrieve tap name (e.g. tap0) */
++    if (ioctl(netdev_dev->tap_fd, TAPGIFNAME, &ifr) == -1) {
++        /* XXX Need to destroy the device? */
++        error = errno;
++        goto error_undef_notifier;
++    }
++
++    /* Change the name of the tap device */
++    ifr.ifr_data = (void *)name;
++    if (ioctl(af_inet_sock, SIOCSIFNAME, &ifr) == -1) {
++        error = errno;
++        destroy_tap(netdev_dev->tap_fd, ifr.ifr_name);
++        goto error_undef_notifier;
++    }
++
++    /* set non-blocking. */
++    error = set_nonblocking(netdev_dev->tap_fd);
++    if (error) {
++        destroy_tap(netdev_dev->tap_fd, name);
++        goto error_undef_notifier;
++    }
++
++    /* Turn device UP */
++    ifr.ifr_flags = (uint16_t)IFF_UP;
++    ifr.ifr_flagshigh = 0;
++    strncpy(ifr.ifr_name, name, sizeof ifr.ifr_name);
++    if (ioctl(af_inet_sock, SIOCSIFFLAGS, &ifr) == -1) {
++        error = errno;
++        destroy_tap(netdev_dev->tap_fd, name);
++        goto error_undef_notifier;
++    }
++
++    /* initialize the device structure and
++     * link the structure to its netdev */
++    netdev_dev_init(&netdev_dev->netdev_dev, name, class);
++    *netdev_devp = &netdev_dev->netdev_dev;
++
++    return 0;
++
++error_undef_notifier:
++    cache_notifier_unref();
++error:
++    free(netdev_dev);
++    return error;
++}
++
++static void
++netdev_bsd_destroy(struct netdev_dev *netdev_dev_)
++{
++    struct netdev_dev_bsd *netdev_dev = netdev_dev_bsd_cast(netdev_dev_);
++
++    cache_notifier_unref();
++
++    if (netdev_dev->tap_fd >= 0 &&
++            !strcmp(netdev_dev_get_type(netdev_dev_), "tap")) {
++        destroy_tap(netdev_dev->tap_fd, netdev_dev_get_name(netdev_dev_));
++    }
++    free(netdev_dev);
++}
++
++
++static int
++netdev_bsd_open_system(struct netdev_dev *netdev_dev_, struct netdev **netdevp)
++{
++    struct netdev_dev_bsd *netdev_dev = netdev_dev_bsd_cast(netdev_dev_);
++    struct netdev_bsd *netdev;
++    int error;
++    enum netdev_flags flags;
++
++    /* Allocate network device. */
++    netdev = xcalloc(1, sizeof *netdev);
++    netdev->netdev_fd = -1;
++    netdev_init(&netdev->netdev, netdev_dev_);
++
++    /* Verify that the netdev really exists by attempting to read its flags */
++    error = netdev_get_flags(&netdev->netdev, &flags);
++    if (error == ENXIO) {
++        goto error;
++    }
++
++    /* The first user that opens a tap port(from dpif_create_and_open()) will
++     * receive the file descriptor associated with the tap device. Instead, the
++     * following users will open the tap device as a normal 'system' device. */
++    if (!strcmp(netdev_dev_get_type(netdev_dev_), "tap") &&
++            !netdev_dev->tap_opened) {
++        netdev_dev->tap_opened = true;
++        netdev->netdev_fd = netdev_dev->tap_fd;
++    }
++
++    *netdevp = &netdev->netdev;
++    return 0;
++
++error:
++    netdev_uninit(&netdev->netdev, true);
++    return error;
++}
++
++
++
++/* Close a 'netdev'. */
++static void
++netdev_bsd_close(struct netdev *netdev_)
++{
++    struct netdev_bsd *netdev = netdev_bsd_cast(netdev_);
++
++    if (netdev->netdev_fd >= 0 && strcmp(netdev_get_type(netdev_), "tap")) {
++        pcap_close(netdev->pcap_handle);
++    }
++
++    free(netdev);
++}
++
++static int
++netdev_bsd_listen(struct netdev *netdev_)
++{
++    struct netdev_bsd *netdev = netdev_bsd_cast(netdev_);
++    char errbuf[PCAP_ERRBUF_SIZE];
++    int error;
++    int fd;
++    int one = 1;
++
++    if (netdev->netdev_fd >= 0) {
++        return 0;
++    }
++
++    /* open the pcap device. The device is opened in non-promiscuous mode
++     * because the interface flags are manually set by the caller. */
++    errbuf[0] = '\0';
++    netdev->pcap_handle = pcap_open_live(netdev_get_name(netdev_), PCAP_SNAPLEN,
++				     0, 1000, errbuf);
++    if (netdev->pcap_handle == NULL) {
++        VLOG_ERR("%s: pcap_open_live failed: %s",
++		netdev_get_name(netdev_), errbuf);
++        error = EIO;
++        goto error;
++    } else if (errbuf[0] !=  '\0') {
++        VLOG_WARN("%s: pcap_open_live: %s",
++		netdev_get_name(netdev_), errbuf);
++    }
++
++    netdev_dev_bsd_changed(netdev_dev_bsd_cast(netdev_get_dev(netdev_)));
++
++    /* initialize netdev->netdev_fd */
++    fd = pcap_get_selectable_fd(netdev->pcap_handle);
++    if (fd == -1) {
++        error = errno;
++        goto error;
++    }
++
++    /* Set non-blocking mode. Also the BIOCIMMEDIATE ioctl must be called
++     * on the file descriptor returned by pcap_get_selectable_fd to achieve
++     * a real non-blocking behaviour.*/
++    error = pcap_setnonblock(netdev->pcap_handle, 1, errbuf);
++    if (error == -1) {
++        error = errno;
++        goto error;
++    }
++
++    /* This call assure that reads return immediately upon packet reception.
++     * Otherwise, a read will block until either the kernel buffer becomes
++     * full or a timeout occurs. */
++    if(ioctl(fd, BIOCIMMEDIATE, &one) < 0 ) {
++        VLOG_ERR("ioctl(BIOCIMMEDIATE) on %s device failed: %s",
++		netdev_get_name(netdev_), strerror(errno));
++        error = errno;
++        goto error;
++    }
++
++    /* Capture only incoming packets */
++    error = pcap_setdirection(netdev->pcap_handle, PCAP_D_IN);
++    if (error == -1) {
++        error = errno;
++        goto error;
++    }
++
++    netdev->netdev_fd = fd;
++    return 0;
++
++error:
++    if (fd >= 0) {
++        close(netdev->netdev_fd);
++    }
++    return error;
++}
++
++
++/* The recv callback of the netdev class returns the number of bytes of the
++ * received packet.
++ *
++ * This can be done by the pcap_next() function. Unfortunately pcap_next() does
++ * not make difference between a missing packet on the capture interface and
++ * an error during the file capture.  We can use the pcap_dispatch() function
++ * instead, which is able to distinguish between errors and null packet.
++ *
++ * To make pcap_dispatch() returns the number of bytes read from the interface
++ * we need to define the following callback and argument.
++ */
++struct pcap_arg {
++    void *data;
++    int size;
++    int retval;
++};
++
++/*
++ * This callback will be executed on every captured packet.
++ *
++ * If the packet captured by pcap_dispatch() does not fit the pcap buffer,
++ * pcap returns a truncated packet and we follow this behavior.
++ *
++ * The argument args->retval is the packet size in bytes.
++ */
++static void
++proc_pkt(u_char *args_, const struct pcap_pkthdr *hdr, const u_char *packet)
++{
++    struct pcap_arg *args = (struct pcap_arg *)args_;
++
++    if (args->size < hdr->len) {
++        VLOG_WARN_RL(&rl, "packet truncated");
++        args->retval = args->size;
++    } else {
++        args->retval = hdr->len;
++    }
++
++    /* copy the packet to our buffer */
++    memcpy(args->data, packet, args->retval);
++}
++
++/*
++ * This function attempts to receive a packet from the specified network
++ * device. It is assumed that the network device is a system device or a tap
++ * device opened as a system one. In this case the read operation is performed
++ * on the 'netdev' pcap descriptor.
++ */
++static int
++netdev_bsd_recv_system(struct netdev_bsd *netdev, void *data, size_t size)
++{
++    struct pcap_arg arg;
++    int ret;
++
++    if (netdev->netdev_fd < 0) {
++        return -EAGAIN;
++    }
++
++    /* prepare the pcap argument to store the packet */
++    arg.size = size;
++    arg.data = data;
++
++    for (;;) {
++        ret = pcap_dispatch(netdev->pcap_handle, 1, proc_pkt, (u_char *)&arg);
++
++        if (ret > 0) {
++            return arg.retval;	/* arg.retval < 0 is handled in the caller */
++        }
++        if (ret == -1) {
++            if (errno == EINTR) {
++                 continue;
++            }
++        }
++
++        return -EAGAIN;
++    }
++}
++
++/*
++ * This function attempts to receive a packet from the specified network
++ * device. It is assumed that the network device is a tap device and the
++ * 'netdev_fd' member of the 'netdev' structure is initialized with the tap
++ * file descriptor.
++ */
++static int
++netdev_bsd_recv_tap(struct netdev_bsd *netdev, void *data, size_t size)
++{
++    if (netdev->netdev_fd < 0) {
++        return -EAGAIN;
++    }
++
++    for (;;) {
++        ssize_t retval = read(netdev->netdev_fd, data, size);
++        if (retval >= 0) {
++            return retval;
++        } else if (errno != EINTR) {
++            if (errno != EAGAIN) {
++                VLOG_WARN_RL(&rl, "error receiving Ethernet packet on %s: %s",
++                             strerror(errno), netdev->netdev.netdev_dev->name);
++            }
++            return -errno;
++        }
++    }
++}
++
++
++/*
++ * According with the nature of the device a different function must be called.
++ * If the device is the bridge local port the 'netdev_bsd_recv_tap' function
++ * must be called, otherwise the 'netdev_bsd_recv_system' function is called.
++ *
++ * type!="tap"                                        --->  system device.
++ * type=="tap" && netdev_fd == tap_fd                 --->  internal tap device
++ * type=="tap" && netdev_fd != tap_fd                 --->  internal tap device
++ *                                                          opened as a system
++ *                                                          device.
++ */
++static int
++netdev_bsd_recv(struct netdev *netdev_, void* data, size_t size)
++{
++    struct netdev_bsd *netdev = netdev_bsd_cast(netdev_);
++    struct netdev_dev_bsd * netdev_dev =
++        netdev_dev_bsd_cast(netdev_get_dev(netdev_));
++
++    if (!strcmp(netdev_get_type(netdev_), "tap") &&
++            netdev->netdev_fd == netdev_dev->tap_fd) {
++        return netdev_bsd_recv_tap(netdev, data, size);
++    } else {
++        return netdev_bsd_recv_system(netdev, data, size);
++    }
++}
++
++
++/*
++ * Registers with the poll loop to wake up from the next call to poll_block()
++ * when a packet is ready to be received with netdev_recv() on 'netdev'.
++ */
++static void
++netdev_bsd_recv_wait(struct netdev *netdev_)
++{
++    struct netdev_bsd *netdev = netdev_bsd_cast(netdev_);
++
++    if (netdev->netdev_fd >= 0) {
++        poll_fd_wait(netdev->netdev_fd, POLLIN);
++    }
++}
++
++/* Discards all packets waiting to be received from 'netdev'. */
++static int
++netdev_bsd_drain(struct netdev *netdev_)
++{
++    struct ifreq ifr;
++    struct netdev_bsd *netdev = netdev_bsd_cast(netdev_);
++
++    strcpy(ifr.ifr_name, netdev_get_name(netdev_));
++    if (ioctl(netdev->netdev_fd, BIOCFLUSH, &ifr) == -1) {
++        VLOG_DBG_RL(&rl, "%s: ioctl(BIOCFLUSH) failed: %s",
++                    netdev_get_name(netdev_), strerror(errno));
++        return errno;
++    }
++    return 0;
++}
++
++/*
++ * Send a packet on the specified network device. The device could be either a
++ * system or a tap device.
++ */
++static int
++netdev_bsd_send(struct netdev *netdev_, const void *data, size_t size)
++{
++    struct netdev_bsd *netdev = netdev_bsd_cast(netdev_);
++    struct netdev_dev_bsd * netdev_dev =
++        netdev_dev_bsd_cast(netdev_get_dev(netdev_));
++
++    if (netdev->netdev_fd < 0) {
++        return EPIPE;
++    }
++
++    for (;;) {
++        ssize_t retval;
++        if (!strcmp(netdev_get_type(netdev_), "tap") &&
++                netdev_dev->tap_fd == netdev->netdev_fd) {
++            retval = write(netdev->netdev_fd, data, size);
++        } else {
++            retval = pcap_inject(netdev->pcap_handle, data, size);
++        }
++        if (retval < 0) {
++            if (errno == EINTR) {
++                continue;
++            } else if (errno != EAGAIN) {
++                VLOG_WARN_RL(&rl, "error sending Ethernet packet on %s: %s",
++                             netdev_get_name(netdev_), strerror(errno));
++            }
++            return errno;
++        } else if (retval != size) {
++            VLOG_WARN_RL(&rl, "sent partial Ethernet packet (%zd bytes of "
++                         "%zu) on %s", retval, size,
++                         netdev_get_name(netdev_));
++           return EMSGSIZE;
++        } else {
++            return 0;
++        }
++    }
++}
++
++/*
++ * Registers with the poll loop to wake up from the next call to poll_block()
++ * when the packet transmission queue has sufficient room to transmit a packet
++ * with netdev_send().
++ */
++static void
++netdev_bsd_send_wait(struct netdev *netdev_)
++{
++    struct netdev_bsd *netdev = netdev_bsd_cast(netdev_);
++
++    if (netdev->netdev_fd < 0) { /* Nothing to do. */
++        return;
++    }
++
++    if (strcmp(netdev_get_type(netdev_), "tap")) {
++        poll_fd_wait(netdev->netdev_fd, POLLOUT);
++    } else {
++        /* TAP device always accepts packets. */
++        poll_immediate_wake();
++    }
++}
++
++/*
++ * Attempts to set 'netdev''s MAC address to 'mac'.  Returns 0 if successful,
++ * otherwise a positive errno value.
++ */
++static int
++netdev_bsd_set_etheraddr(struct netdev *netdev_,
++                           const uint8_t mac[ETH_ADDR_LEN])
++{
++    struct netdev_dev_bsd *netdev_dev =
++                                netdev_dev_bsd_cast(netdev_get_dev(netdev_));
++    int error;
++
++    if (!(netdev_dev->cache_valid & VALID_ETHERADDR)
++        || !eth_addr_equals(netdev_dev->etheraddr, mac)) {
++        error = set_etheraddr(netdev_get_name(netdev_), AF_LINK, ETH_ADDR_LEN,
++                              mac);
++        if (!error) {
++            netdev_dev->cache_valid |= VALID_ETHERADDR;
++            memcpy(netdev_dev->etheraddr, mac, ETH_ADDR_LEN);
++            netdev_dev_bsd_changed(netdev_dev);
++        }
++    } else {
++        error = 0;
++    }
++    return error;
++}
++
++/*
++ * Returns a pointer to 'netdev''s MAC address.  The caller must not modify or
++ * free the returned buffer.
++ */
++static int
++netdev_bsd_get_etheraddr(const struct netdev *netdev_,
++                           uint8_t mac[ETH_ADDR_LEN])
++{
++    struct netdev_dev_bsd *netdev_dev =
++        netdev_dev_bsd_cast(netdev_get_dev(netdev_));
++
++    if (!(netdev_dev->cache_valid & VALID_ETHERADDR)) {
++        int error = get_etheraddr(netdev_get_name(netdev_),
++                                  netdev_dev->etheraddr);
++        if (error) {
++            return error;
++        }
++        netdev_dev->cache_valid |= VALID_ETHERADDR;
++    }
++    memcpy(mac, netdev_dev->etheraddr, ETH_ADDR_LEN);
++
++    return 0;
++}
++
++/*
++ * Returns the maximum size of transmitted (and received) packets on 'netdev',
++ * in bytes, not including the hardware header; thus, this is typically 1500
++ * bytes for Ethernet devices.
++ */
++static int
++netdev_bsd_get_mtu(const struct netdev *netdev_, int *mtup)
++{
++    struct netdev_dev_bsd *netdev_dev =
++        netdev_dev_bsd_cast(netdev_get_dev(netdev_));
++
++    if (!(netdev_dev->cache_valid & VALID_MTU)) {
++        struct ifreq ifr;
++        int error;
++
++        error = netdev_bsd_do_ioctl(netdev_, &ifr, SIOCGIFMTU, "SIOCGIFMTU");
++        if (error) {
++            return error;
++        }
++        netdev_dev->mtu = ifr.ifr_mtu;
++        netdev_dev->cache_valid |= VALID_MTU;
++    }
++
++    *mtup = netdev_dev->mtu;
++    return 0;
++}
++
++static int
++netdev_bsd_get_ifindex(const struct netdev *netdev)
++{
++    int ifindex, error;
++
++    error = get_ifindex(netdev, &ifindex);
++    return error ? -error : ifindex;
++}
++
++static int
++netdev_bsd_get_carrier(const struct netdev *netdev_, bool *carrier)
++{
++    struct netdev_dev_bsd *netdev_dev =
++        netdev_dev_bsd_cast(netdev_get_dev(netdev_));
++
++    if (!(netdev_dev->cache_valid & VALID_CARRIER)) {
++        struct ifmediareq ifmr;
++
++        memset(&ifmr, 0, sizeof(ifmr));
++        strncpy(ifmr.ifm_name, netdev_get_name(netdev_), sizeof ifmr.ifm_name);
++
++        if (ioctl(af_inet_sock, SIOCGIFMEDIA, &ifmr) == -1) {
++            VLOG_DBG_RL(&rl, "%s: ioctl(SIOCGIFMEDIA) failed: %s",
++                        netdev_get_name(netdev_), strerror(errno));
++            return errno;
++        }
++
++        netdev_dev->carrier = (ifmr.ifm_status & IFM_ACTIVE) == IFM_ACTIVE;
++        netdev_dev->cache_valid |= VALID_CARRIER;
++
++        /* If the interface doesn't report whether the media is active,
++         * just assume it is active. */
++        if ((ifmr.ifm_status & IFM_AVALID) == 0) {
++            netdev_dev->carrier = true;
++        }
++    }
++    *carrier = netdev_dev->carrier;
++
++    return 0;
++}
++
++/* Retrieves current device stats for 'netdev'. */
++static int
++netdev_bsd_get_stats(const struct netdev *netdev_, struct netdev_stats *stats)
++{
++    int if_count, i;
++    int mib[6];
++    size_t len;
++    struct ifmibdata ifmd;
++
++
++    mib[0] = CTL_NET;
++    mib[1] = PF_LINK;
++    mib[2] = NETLINK_GENERIC;
++    mib[3] = IFMIB_SYSTEM;
++    mib[4] = IFMIB_IFCOUNT;
++
++    len = sizeof(if_count);
++
++    if (sysctl(mib, 5, &if_count, &len, (void *)0, 0) == -1) {
++        VLOG_DBG_RL(&rl, "%s: sysctl failed: %s",
++                    netdev_get_name(netdev_), strerror(errno));
++        return errno;
++    }
++
++    mib[5] = IFDATA_GENERAL;
++    mib[3] = IFMIB_IFDATA;
++    len = sizeof(ifmd);
++    for (i = 1; i <= if_count; i++) {
++        mib[4] = i; //row
++        if (sysctl(mib, 6, &ifmd, &len, (void *)0, 0) == -1) {
++            VLOG_DBG_RL(&rl, "%s: sysctl failed: %s",
++                        netdev_get_name(netdev_), strerror(errno));
++            return errno;
++        } else if (!strcmp(ifmd.ifmd_name, netdev_get_name(netdev_))) {
++            stats->rx_packets = ifmd.ifmd_data.ifi_ipackets;
++            stats->tx_packets = ifmd.ifmd_data.ifi_opackets;
++            stats->rx_bytes = ifmd.ifmd_data.ifi_ibytes;
++            stats->tx_bytes = ifmd.ifmd_data.ifi_obytes;
++            stats->rx_errors = ifmd.ifmd_data.ifi_ierrors;
++            stats->tx_errors = ifmd.ifmd_data.ifi_oerrors;
++            stats->rx_dropped = ifmd.ifmd_data.ifi_iqdrops;
++            stats->tx_dropped = 0;
++            stats->multicast = ifmd.ifmd_data.ifi_imcasts;
++            stats->collisions = ifmd.ifmd_data.ifi_collisions;
++
++            stats->rx_length_errors = 0;
++            stats->rx_over_errors = 0;
++            stats->rx_crc_errors = 0;
++            stats->rx_frame_errors = 0;
++            stats->rx_fifo_errors = 0;
++            stats->rx_missed_errors = 0;
++
++            stats->tx_aborted_errors = 0;
++            stats->tx_carrier_errors = 0;
++            stats->tx_fifo_errors = 0;
++            stats->tx_heartbeat_errors = 0;
++            stats->tx_window_errors = 0;
++            break;
++        }
++    }
++
++    return 0;
++}
++
++static uint32_t
++netdev_bsd_parse_media(int media)
++{
++    uint32_t supported = 0;
++    bool half_duplex = media & IFM_HDX ? true : false;
++
++    switch (IFM_SUBTYPE(media)) {
++    case IFM_10_2:
++    case IFM_10_5:
++    case IFM_10_STP:
++    case IFM_10_T:
++        supported |= half_duplex ? NETDEV_F_10MB_HD : NETDEV_F_10MB_FD;
++        supported |= NETDEV_F_COPPER;
++        break;
++
++    case IFM_10_FL:
++        supported |= half_duplex ? NETDEV_F_10MB_HD : NETDEV_F_10MB_FD;
++        supported |= NETDEV_F_FIBER;
++        break;
++
++    case IFM_100_T2:
++    case IFM_100_T4:
++    case IFM_100_TX:
++    case IFM_100_VG:
++        supported |= half_duplex ? NETDEV_F_100MB_HD : NETDEV_F_100MB_FD;
++        supported |= NETDEV_F_COPPER;
++        break;
++
++    case IFM_100_FX:
++        supported |= half_duplex ? NETDEV_F_100MB_HD : NETDEV_F_100MB_FD;
++        supported |= NETDEV_F_FIBER;
++        break;
++
++    case IFM_1000_CX:
++    case IFM_1000_T:
++        supported |= half_duplex ? NETDEV_F_1GB_HD : NETDEV_F_1GB_FD;
++        supported |= NETDEV_F_COPPER;
++        break;
++
++    case IFM_1000_LX:
++    case IFM_1000_SX:
++        supported |= half_duplex ? NETDEV_F_1GB_HD : NETDEV_F_1GB_FD;
++        supported |= NETDEV_F_FIBER;
++        break;
++
++    case IFM_10G_CX4:
++        supported |= NETDEV_F_10GB_FD;
++        supported |= NETDEV_F_COPPER;
++        break;
++
++    case IFM_10G_LR:
++    case IFM_10G_SR:
++        supported |= NETDEV_F_10GB_FD;
++        supported |= NETDEV_F_FIBER;
++        break;
++
++    default:
++        return 0;
++    }
++
++    if (IFM_SUBTYPE(media) == IFM_AUTO) {
++        supported |= NETDEV_F_AUTONEG;
++    }
++    /*
++    if (media & IFM_ETH_FMASK) {
++        supported |= NETDEV_F_PAUSE;
++    }
++    */
++
++    return supported;
++}
++
++/*
++ * Stores the features supported by 'netdev' into each of '*current',
++ * '*advertised', '*supported', and '*peer' that are non-null.  Each value is a
++ * bitmap of "enum ofp_port_features" bits, in host byte order.  Returns 0 if
++ * successful, otherwise a positive errno value.  On failure, all of the
++ * passed-in values are set to 0.
++ */
++static int
++netdev_bsd_get_features(const struct netdev *netdev,
++                          enum netdev_features *current, uint32_t *advertised,
++                          enum netdev_features *supported, uint32_t *peer)
++{
++    struct ifmediareq ifmr;
++    int *media_list;
++    int i;
++    int error;
++
++
++    /* XXX Look into SIOCGIFCAP instead of SIOCGIFMEDIA */
++
++    memset(&ifmr, 0, sizeof(ifmr));
++    strncpy(ifmr.ifm_name, netdev_get_name(netdev), sizeof ifmr.ifm_name);
++
++    /* We make two SIOCGIFMEDIA ioctl calls.  The first to determine the
++     * number of supported modes, and a second with a buffer to retrieve
++     * them. */
++    if (ioctl(af_inet_sock, SIOCGIFMEDIA, &ifmr) == -1) {
++        VLOG_DBG_RL(&rl, "%s: ioctl(SIOCGIFMEDIA) failed: %s",
++                    netdev_get_name(netdev), strerror(errno));
++        return errno;
++    }
++
++    media_list = xcalloc(ifmr.ifm_count, sizeof(int));
++    ifmr.ifm_ulist = media_list;
++
++    if (!IFM_TYPE(ifmr.ifm_current) & IFM_ETHER) {
++        VLOG_DBG_RL(&rl, "%s: doesn't appear to be ethernet",
++                    netdev_get_name(netdev));
++        error = EINVAL;
++        goto cleanup;
++    }
++
++    if (ioctl(af_inet_sock, SIOCGIFMEDIA, &ifmr) == -1) {
++        VLOG_DBG_RL(&rl, "%s: ioctl(SIOCGIFMEDIA) failed: %s",
++                    netdev_get_name(netdev), strerror(errno));
++        error = errno;
++        goto cleanup;
++    }
++
++    /* Current settings. */
++    *current = netdev_bsd_parse_media(ifmr.ifm_active);
++
++    /* Advertised features. */
++    *advertised = netdev_bsd_parse_media(ifmr.ifm_current);
++
++    /* Supported features. */
++    *supported = 0;
++    for (i = 0; i < ifmr.ifm_count; i++) {
++        *supported |= netdev_bsd_parse_media(ifmr.ifm_ulist[i]);
++    }
++
++    /* Peer advertisements. */
++    *peer = 0;                  /* XXX */
++
++    error = 0;
++cleanup:
++    free(media_list);
++    return error;
++}
++
++/*
++ * If 'netdev' has an assigned IPv4 address, sets '*in4' to that address (if
++ * 'in4' is non-null) and returns true.  Otherwise, returns false.
++ */
++static int
++netdev_bsd_get_in4(const struct netdev *netdev_, struct in_addr *in4,
++                   struct in_addr *netmask)
++{
++    struct netdev_dev_bsd *netdev_dev =
++        netdev_dev_bsd_cast(netdev_get_dev(netdev_));
++
++    if (!(netdev_dev->cache_valid & VALID_IN4)) {
++        const struct sockaddr_in *sin;
++        struct ifreq ifr;
++        int error;
++
++        ifr.ifr_addr.sa_family = AF_INET;
++        error = netdev_bsd_do_ioctl(netdev_, &ifr,
++                                      SIOCGIFADDR, "SIOCGIFADDR");
++        if (error) {
++            return error;
++        }
++
++        sin = (struct sockaddr_in *) &ifr.ifr_addr;
++        netdev_dev->in4 = sin->sin_addr;
++        netdev_dev->cache_valid |= VALID_IN4;
++        error = netdev_bsd_do_ioctl(netdev_, &ifr,
++                                      SIOCGIFNETMASK, "SIOCGIFNETMASK");
++        if (error) {
++            return error;
++        }
++        *netmask = ((struct sockaddr_in*)&ifr.ifr_addr)->sin_addr;
++    }
++    *in4 = netdev_dev->in4;
++
++    return in4->s_addr == INADDR_ANY ? EADDRNOTAVAIL : 0;
++}
++
++/*
++ * Assigns 'addr' as 'netdev''s IPv4 address and 'mask' as its netmask.  If
++ * 'addr' is INADDR_ANY, 'netdev''s IPv4 address is cleared.  Returns a
++ * positive errno value.
++ */
++static int
++netdev_bsd_set_in4(struct netdev *netdev_, struct in_addr addr,
++                     struct in_addr mask)
++{
++    struct netdev_dev_bsd *netdev_dev =
++        netdev_dev_bsd_cast(netdev_get_dev(netdev_));
++    int error;
++
++    error = do_set_addr(netdev_, SIOCSIFADDR, "SIOCSIFADDR", addr);
++    if (!error) {
++        netdev_dev->cache_valid |= VALID_IN4;
++        netdev_dev->in4 = addr;
++        if (addr.s_addr != INADDR_ANY) {
++            error = do_set_addr(netdev_, SIOCSIFNETMASK,
++                                "SIOCSIFNETMASK", mask);
++        }
++        netdev_dev_bsd_changed(netdev_dev);
++    }
++    return error;
++}
++
++static int
++netdev_bsd_get_in6(const struct netdev *netdev_, struct in6_addr *in6)
++{
++    struct netdev_dev_bsd *netdev_dev =
++                                netdev_dev_bsd_cast(netdev_get_dev(netdev_));
++    if (!(netdev_dev->cache_valid & VALID_IN6)) {
++        struct ifaddrs *ifa, *head;
++        struct sockaddr_in6 *sin6;
++        const char *netdev_name = netdev_get_name(netdev_);
++
++        if (getifaddrs(&head) != 0) {
++            VLOG_ERR("getifaddrs on %s device failed: %s", netdev_name,
++                    strerror(errno));
++            return errno;
++        }
++
++        for (ifa = head; ifa; ifa = ifa->ifa_next) {
++            if (ifa->ifa_addr->sa_family == AF_INET6 &&
++                    !strcmp(ifa->ifa_name, netdev_name)) {
++                sin6 = (struct sockaddr_in6 *)ifa->ifa_addr;
++                if (sin6) {
++                    memcpy(&netdev_dev->in6, &sin6->sin6_addr, sin6->sin6_len);
++                    netdev_dev->cache_valid |= VALID_IN6;
++                    *in6 = netdev_dev->in6;
++                    freeifaddrs(head);
++                    return 0;
++                }
++            }
++        }
++        return EADDRNOTAVAIL;
++    }
++    *in6 = netdev_dev->in6;
++    return 0;
++}
++
++static void
++make_in4_sockaddr(struct sockaddr *sa, struct in_addr addr)
++{
++    struct sockaddr_in sin;
++    memset(&sin, 0, sizeof sin);
++    sin.sin_family = AF_INET;
++    sin.sin_addr = addr;
++    sin.sin_port = 0;
++
++    memset(sa, 0, sizeof *sa);
++    memcpy(sa, &sin, sizeof sin);
++}
++
++static int
++do_set_addr(struct netdev *netdev,
++            int ioctl_nr, const char *ioctl_name, struct in_addr addr)
++{
++    struct ifreq ifr;
++    make_in4_sockaddr(&ifr.ifr_addr, addr);
++    return netdev_bsd_do_ioctl(netdev, &ifr, ioctl_nr, ioctl_name);
++}
++
++static int
++nd_to_iff_flags(enum netdev_flags nd)
++{
++    int iff = 0;
++    if (nd & NETDEV_UP) {
++        iff |= IFF_UP;
++    }
++    if (nd & NETDEV_PROMISC) {
++        iff |= IFF_PROMISC;
++        iff |= IFF_PPROMISC;
++    }
++    return iff;
++}
++
++static int
++iff_to_nd_flags(int iff)
++{
++    enum netdev_flags nd = 0;
++    if (iff & IFF_UP) {
++        nd |= NETDEV_UP;
++    }
++    if (iff & IFF_PROMISC) {
++        nd |= NETDEV_PROMISC;
++    }
++    return nd;
++}
++
++static int
++netdev_bsd_update_flags(struct netdev *netdev, enum netdev_flags off,
++                          enum netdev_flags on, enum netdev_flags *old_flagsp)
++{
++    int old_flags, new_flags;
++    int error;
++
++    error = get_flags(netdev, &old_flags);
++    if (!error) {
++        *old_flagsp = iff_to_nd_flags(old_flags);
++        new_flags = (old_flags & ~nd_to_iff_flags(off)) | nd_to_iff_flags(on);
++        if (new_flags != old_flags) {
++            error = set_flags(netdev, new_flags);
++            netdev_dev_bsd_changed(netdev_dev_bsd_cast(netdev_get_dev(netdev)));
++        }
++    }
++    return error;
++}
++
++static unsigned int
++netdev_bsd_change_seq(const struct netdev *netdev)
++{
++    return netdev_dev_bsd_cast(netdev_get_dev(netdev))->change_seq;
++}
++
++
++const struct netdev_class netdev_bsd_class = {
++    "system",
++
++    netdev_bsd_init,
++    netdev_bsd_run,
++    netdev_bsd_wait,
++    netdev_bsd_create_system,
++    netdev_bsd_destroy,
++    NULL, /* get_config */
++    NULL, /* set_config */
++    netdev_bsd_open_system,
++    netdev_bsd_close,
++
++    netdev_bsd_listen,
++
++    netdev_bsd_recv,
++    netdev_bsd_recv_wait,
++    netdev_bsd_drain,
++
++    netdev_bsd_send,
++    netdev_bsd_send_wait,
++
++    netdev_bsd_set_etheraddr,
++    netdev_bsd_get_etheraddr,
++    netdev_bsd_get_mtu,
++    NULL, /* set_mtu */
++    netdev_bsd_get_ifindex,
++    netdev_bsd_get_carrier,
++    NULL, /* get_carrier_resets */
++    NULL, /* set_miimon_interval */
++    netdev_bsd_get_stats,
++    NULL, /* set_stats */
++
++    netdev_bsd_get_features,
++    NULL, /* set_advertisement */
++    NULL, /* set_policing */
++    NULL, /* get_qos_type */
++    NULL, /* get_qos_capabilities */
++    NULL, /* get_qos */
++    NULL, /* set_qos */
++    NULL, /* get_queue */
++    NULL, /* set_queue */
++    NULL, /* delete_queue */
++    NULL, /* get_queue_stats */
++    NULL, /* dump_queue */
++    NULL, /* dump_queue_stats */
++
++    netdev_bsd_get_in4,
++    netdev_bsd_set_in4,
++    netdev_bsd_get_in6,
++    NULL, /* add_router */
++    NULL, /* get_next_hop */
++    NULL, /* get_drv_info */
++    NULL, /* arp_lookup */
++
++    netdev_bsd_update_flags,
++
++    netdev_bsd_change_seq
++};
++
++const struct netdev_class netdev_tap_class = {
++    "tap",
++
++    netdev_bsd_init,
++    netdev_bsd_run,
++    netdev_bsd_wait,
++    netdev_bsd_create_tap,
++    netdev_bsd_destroy,
++    NULL, /* get_config */
++    NULL, /* set_config */
++    netdev_bsd_open_system,
++    netdev_bsd_close,
++
++    netdev_bsd_listen,
++
++    netdev_bsd_recv,
++    netdev_bsd_recv_wait,
++    netdev_bsd_drain,
++
++    netdev_bsd_send,
++    netdev_bsd_send_wait,
++
++    netdev_bsd_set_etheraddr,
++    netdev_bsd_get_etheraddr,
++    netdev_bsd_get_mtu,
++    NULL, /* set_mtu */
++    netdev_bsd_get_ifindex,
++    netdev_bsd_get_carrier,
++    NULL, /* get_carrier_resets */
++    NULL, /* set_miimon_interval */
++    netdev_bsd_get_stats,
++    NULL, /* set_stats */
++
++    netdev_bsd_get_features,
++    NULL, /* set_advertisement */
++    NULL, /* set_policing */
++    NULL, /* get_qos_type */
++    NULL, /* get_qos_capabilities */
++    NULL, /* get_qos */
++    NULL, /* set_qos */
++    NULL, /* get_queue */
++    NULL, /* set_queue */
++    NULL, /* delete_queue */
++    NULL, /* get_queue_stats */
++    NULL, /* dump_queue */
++    NULL, /* dump_queue_stats */
++
++    netdev_bsd_get_in4,
++    netdev_bsd_set_in4,
++    netdev_bsd_get_in6,
++    NULL, /* add_router */
++    NULL, /* get_next_hop */
++    NULL, /* get_drv_info */
++    NULL, /* arp_lookup */
++
++    netdev_bsd_update_flags,
++
++    netdev_bsd_change_seq
++};
++
++
++static void
++destroy_tap(int fd, const char *name)
++{
++    struct ifreq ifr;
++
++    close(fd);
++    strcpy(ifr.ifr_name, name);
++    /* XXX What to do if this call fails? */
++    ioctl(af_inet_sock, SIOCIFDESTROY, &ifr);
++}
++
++static int
++get_flags(const struct netdev *netdev, int *flags)
++{
++    struct ifreq ifr;
++    int error;
++
++    error = netdev_bsd_do_ioctl(netdev, &ifr, SIOCGIFFLAGS, "SIOCGIFFLAGS");
++
++    *flags = 0xFFFF0000 & (ifr.ifr_flagshigh << 16);
++    *flags |= 0x0000FFFF & ifr.ifr_flags;
++
++    return error;
++}
++
++static int
++set_flags(struct netdev *netdev, int flags)
++{
++    struct ifreq ifr;
++
++    ifr.ifr_flags = 0x0000FFFF & flags;
++    ifr.ifr_flagshigh = (0xFFFF0000 & flags) >> 16;
++
++    return netdev_bsd_do_ioctl(netdev, &ifr, SIOCSIFFLAGS, "SIOCSIFFLAGS");
++}
++
++static int
++get_ifindex(const struct netdev *netdev_, int *ifindexp)
++{
++    struct netdev_dev_bsd *netdev_dev =
++                                netdev_dev_bsd_cast(netdev_get_dev(netdev_));
++    *ifindexp = 0;
++    if (!(netdev_dev->cache_valid & VALID_IFINDEX)) {
++        int ifindex = if_nametoindex(netdev_get_name(netdev_));
++        if (ifindex <= 0) {
++            return errno;
++        }
++        netdev_dev->cache_valid |= VALID_IFINDEX;
++        netdev_dev->ifindex = ifindex;
++    }
++    *ifindexp = netdev_dev->ifindex;
++    return 0;
++}
++
++static int
++get_etheraddr(const char *netdev_name, uint8_t ea[ETH_ADDR_LEN])
++{
++    struct ifaddrs *head;
++    struct ifaddrs *ifa;
++    struct sockaddr_dl *sdl;
++
++    if (getifaddrs(&head) != 0) {
++        VLOG_ERR("getifaddrs on %s device failed: %s", netdev_name,
++                strerror(errno));
++        return errno;
++    }
++
++    for (ifa = head; ifa; ifa = ifa->ifa_next) {
++        if (ifa->ifa_addr->sa_family == AF_LINK) {
++            if (!strcmp(ifa->ifa_name, netdev_name)) {
++                sdl = (struct sockaddr_dl *)ifa->ifa_addr;
++                if (sdl) {
++                    memcpy(ea, LLADDR(sdl), sdl->sdl_alen);
++                    freeifaddrs(head);
++                    return 0;
++                }
++            }
++        }
++    }
++
++    VLOG_ERR("could not find ethernet address for %s device", netdev_name);
++    freeifaddrs(head);
++    return ENODEV;
++}
++
++static int
++set_etheraddr(const char *netdev_name, int hwaddr_family,
++              int hwaddr_len, const uint8_t mac[ETH_ADDR_LEN])
++{
++    struct ifreq ifr;
++
++    memset(&ifr, 0, sizeof ifr);
++    strncpy(ifr.ifr_name, netdev_name, sizeof ifr.ifr_name);
++    ifr.ifr_addr.sa_family = hwaddr_family;
++    ifr.ifr_addr.sa_len = hwaddr_len;
++    memcpy(ifr.ifr_addr.sa_data, mac, hwaddr_len);
++    if (ioctl(af_inet_sock, SIOCSIFLLADDR, &ifr) < 0) {
++        VLOG_ERR("ioctl(SIOCSIFLLADDR) on %s device failed: %s",
++                 netdev_name, strerror(errno));
++        return errno;
++    }
++    return 0;
++}
++
++static int
++netdev_bsd_do_ioctl(const struct netdev *netdev, struct ifreq *ifr,
++                    unsigned long cmd, const char *cmd_name)
++{
++    strncpy(ifr->ifr_name, netdev_get_name(netdev), sizeof ifr->ifr_name);
++    if (ioctl(af_inet_sock, cmd, ifr) == -1) {
++        VLOG_DBG_RL(&rl, "%s: ioctl(%s) failed: %s",
++                    netdev_get_name(netdev), cmd_name, strerror(errno));
++        return errno;
++    }
++    return 0;
++}
+diff --git lib/netdev-provider.h lib/netdev-provider.h
+index 080b76a..2a91f05 100644
+--- lib/netdev-provider.h
++++ lib/netdev-provider.h
+@@ -596,6 +596,9 @@ const struct netdev_class *netdev_lookup_provider(const char *type);
+ extern const struct netdev_class netdev_linux_class;
+ extern const struct netdev_class netdev_internal_class;
+ extern const struct netdev_class netdev_tap_class;
++#ifdef __FreeBSD__
++extern const struct netdev_class netdev_bsd_class;
++#endif
+ 
+ #ifdef  __cplusplus
+ }
+diff --git lib/netdev.c lib/netdev.c
+index e4e7ab1..be7cdd2 100644
+--- lib/netdev.c
++++ lib/netdev.c
+@@ -80,6 +80,10 @@ netdev_initialize(void)
+         netdev_register_provider(&netdev_tap_class);
+         netdev_vport_register();
+ #endif
++#ifdef __FreeBSD__
++        netdev_register_provider(&netdev_tap_class);
++        netdev_register_provider(&netdev_bsd_class);
++#endif
+     }
+ }
+ 
+diff --git lib/route-table-bsd.c lib/route-table-bsd.c
+new file mode 100644
+index 0000000..c145091
+--- /dev/null
++++ lib/route-table-bsd.c
+@@ -0,0 +1,129 @@
++/*
++ * Copyright (c) 2012 Ed Maste. All rights reserved.
++ *
++ * Licensed under the Apache License, Version 2.0 (the "License");
++ * you may not use this file except in compliance with the License.
++ * You may obtain a copy of the License at:
++ *
++ *     http://www.apache.org/licenses/LICENSE-2.0
++ *
++ * Unless required by applicable law or agreed to in writing, software
++ * distributed under the License is distributed on an "AS IS" BASIS,
++ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
++ * See the License for the specific language governing permissions and
++ * limitations under the License.
++ */
++
++#include <config.h>
++
++#include "route-table.h"
++
++#include <sys/socket.h>
++#include <sys/types.h>
++
++#include <net/if.h>
++#include <net/route.h>
++#include <net/if_dl.h>
++#include <netinet/in.h>
++
++#include <string.h>
++#include <unistd.h>
++
++VLOG_DEFINE_THIS_MODULE(route_table);
++
++static int pid;
++static unsigned int register_count = 0;
++
++bool
++route_table_get_name(ovs_be32 ip, char name[IFNAMSIZ])
++{
++    struct {
++        struct rt_msghdr rtm;
++        char space[512];
++    } rtmsg;
++
++    struct rt_msghdr *rtm = &rtmsg.rtm;
++    struct sockaddr_dl *ifp = NULL;
++    struct sockaddr_in *sin;
++    struct sockaddr *sa;
++    static int seq;
++    int i, len, namelen, rtsock;
++
++    rtsock = socket(PF_ROUTE, SOCK_RAW, 0);
++    if (rtsock < 0)
++        return false;
++
++    memset(&rtmsg, 0, sizeof(rtmsg));
++
++    rtm->rtm_msglen = sizeof(struct rt_msghdr) + sizeof(struct sockaddr_in);
++    rtm->rtm_version = RTM_VERSION;
++    rtm->rtm_type = RTM_GET;
++    rtm->rtm_addrs = RTA_DST | RTA_IFP;
++    rtm->rtm_seq = ++seq;
++
++    sin = (struct sockaddr_in *)(rtm + 1);
++    sin->sin_len = len = sizeof(struct sockaddr_in);
++    sin->sin_family = AF_INET;
++    sin->sin_addr.s_addr = ip;
++
++    if ((write(rtsock, (char *)&rtmsg, rtm->rtm_msglen)) < 0) {
++        close(rtsock);
++        return false;
++    }
++
++    do {
++        len = read(rtsock, (char *)&rtmsg, sizeof(rtmsg));
++    } while (len > 0 && (rtmsg.rtm.rtm_seq != seq ||
++        rtmsg.rtm.rtm_pid != pid));
++
++    close(rtsock);
++
++    if (len < 0) {
++        return false;
++    }
++
++    sa = (struct sockaddr *)(rtm + 1);
++    for (i = 1; i; i <<= 1) {
++        if (rtm->rtm_addrs & i) {
++            if (i == RTA_IFP && sa->sa_family == AF_LINK &&
++              ((struct sockaddr_dl *)sa)->sdl_nlen) {
++                ifp = (struct sockaddr_dl *)sa;
++                namelen = ifp->sdl_nlen;
++                if (namelen > IFNAMSIZ - 1)
++                    namelen = IFNAMSIZ - 1;
++                memcpy(name, ifp->sdl_data, namelen);
++                name[namelen] = '\0';
++                return true;
++            }
++            sa = (struct sockaddr *)((char *)sa + SA_SIZE(sa));
++        }
++    }
++    return false;
++}
++
++void
++route_table_register()
++{
++    if (!register_count)
++    {
++        pid = getpid();
++    }
++
++    register_count++;
++}
++
++void
++route_table_unregister()
++{
++    register_count--;
++}
++
++void
++route_table_run(void)
++{
++}
++
++void
++route_table_wait(void)
++{
++}
+diff --git lib/route-table.h lib/route-table.h
+index 1479249..804cb3f 100644
+--- lib/route-table.h
++++ lib/route-table.h
+@@ -17,6 +17,7 @@
+ #ifndef ROUTE_TABLE_H
+ #define ROUTE_TABLE_H 1
+ 
++#include <sys/socket.h>
+ #include <net/if.h>
+ #include <stdbool.h>
+ #include <stdint.h>
+diff --git lib/rtbsd.c lib/rtbsd.c
+new file mode 100644
+index 0000000..c5fe03a
+--- /dev/null
++++ lib/rtbsd.c
+@@ -0,0 +1,167 @@
++/*
++ * Copyright (c) 2011 Gaetano Catalli.
++ *
++ * Licensed under the Apache License, Version 2.0 (the "License");
++ * you may not use this file except in compliance with the License.
++ * You may obtain a copy of the License at:
++ *
++ *     http://www.apache.org/licenses/LICENSE-2.0
++ *
++ * Unless required by applicable law or agreed to in writing, software
++ * distributed under the License is distributed on an "AS IS" BASIS,
++ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
++ * See the License for the specific language governing permissions and
++ * limitations under the License.
++ */
++
++#include <config.h>
++
++#include <unistd.h>
++#include <errno.h>
++#include <sys/socket.h>
++#include <net/if.h>
++#include <net/route.h>
++#include <poll.h>
++
++#include "coverage.h"
++#include "socket-util.h"
++#include "poll-loop.h"
++#include "vlog.h"
++#include "rtbsd.h"
++
++VLOG_DEFINE_THIS_MODULE(rtbsd);
++COVERAGE_DEFINE(rtbsd_changed);
++
++/* PF_ROUTE socket. */
++static int notify_sock = -1;
++
++/* All registered notifiers. */
++static struct list all_notifiers = LIST_INITIALIZER(&all_notifiers);
++
++static void rtbsd_report_change(const struct if_msghdr *);
++static void rtbsd_report_notify_error(void);
++
++/* Registers 'cb' to be called with auxiliary data 'aux' with network device
++ * change notifications.  The notifier is stored in 'notifier', which the
++ * caller must not modify or free.
++ *
++ * Returns 0 if successful, otherwise a positive errno value. */
++int
++rtbsd_notifier_register(struct rtbsd_notifier *notifier,
++                            rtbsd_notify_func *cb, void *aux)
++{
++    if (notify_sock < 0) {
++        int error;
++        notify_sock = socket(PF_ROUTE, SOCK_RAW, 0);
++        if (notify_sock < 0) {
++            VLOG_WARN("could not create PF_ROUTE socket: %s",
++                      strerror(errno));
++            return errno;
++        }
++        error = set_nonblocking(notify_sock);
++        if (error) {
++            VLOG_WARN("error set_nonblocking PF_ROUTE socket: %s",
++                    strerror(error));
++            return error;
++        }
++    } else {
++        /* Catch up on notification work so that the new notifier won't
++         * receive any stale notifications. XXX*/
++        rtbsd_notifier_run();
++    }
++
++    list_push_back(&all_notifiers, &notifier->node);
++    notifier->cb = cb;
++    notifier->aux = aux;
++    return 0;
++}
++
++/* Cancels notification on 'notifier', which must have previously been
++ * registered with rtbsd_notifier_register(). */
++void
++rtbsd_notifier_unregister(struct rtbsd_notifier *notifier)
++{
++    list_remove(&notifier->node);
++    if (list_is_empty(&all_notifiers)) {
++        close(notify_sock);
++        notify_sock = -1;
++    }
++}
++
++/* Calls all of the registered notifiers, passing along any as-yet-unreported
++ * netdev change events. */
++void
++rtbsd_notifier_run(void)
++{
++    static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
++    struct if_msghdr msg;
++    if (notify_sock < 0) {
++        return;
++    }
++
++    for (;;) {
++        int retval;
++
++        msg.ifm_type = RTM_IFINFO;
++        msg.ifm_version = RTM_VERSION; //XXX check if necessary
++
++        /* read from PF_ROUTE socket */
++        retval = read(notify_sock, (char *)&msg, sizeof(msg));
++        if (retval >= 0) {
++            /* received packet from PF_ROUTE socket
++             * XXX check for bad packets */
++            if (msg.ifm_type == RTM_IFINFO) {
++                rtbsd_report_change(&msg);
++            }
++        } else if (errno == EAGAIN) {
++            return;
++        } else {
++            if (errno == ENOBUFS) {
++                VLOG_WARN_RL(&rl, "PF_ROUTE receive buffer overflowed");
++            } else {
++                VLOG_WARN_RL(&rl, "error reading PF_ROUTE socket: %s",
++                             strerror(errno));
++            }
++            rtbsd_report_notify_error();
++        }
++    }
++}
++
++/* Causes poll_block() to wake up when network device change notifications are
++ * ready. */
++void
++rtbsd_notifier_wait(void)
++{
++    if (notify_sock >= 0) {
++        poll_fd_wait(notify_sock, POLLIN);
++    }
++}
++
++static void
++rtbsd_report_change(const struct if_msghdr *msg)
++{
++    struct rtbsd_notifier *notifier;
++    struct rtbsd_change change;
++
++    COVERAGE_INC(rtbsd_changed);
++
++    change.msg_type = msg->ifm_type; //XXX
++    change.if_index = msg->ifm_index;
++    if_indextoname(msg->ifm_index, change.if_name);
++    change.master_ifindex = 0; //XXX
++
++    LIST_FOR_EACH (notifier, node, &all_notifiers) {
++        notifier->cb(&change, notifier->aux);
++    }
++}
++
++/* If an error occurs the notifiers' callbacks are called with NULL changes */
++static void
++rtbsd_report_notify_error(void)
++{
++    struct rtbsd_notifier *notifier;
++
++    LIST_FOR_EACH (notifier, node, &all_notifiers) {
++        notifier->cb(NULL, notifier->aux);
++    }
++}
+diff --git lib/rtbsd.h lib/rtbsd.h
+new file mode 100644
+index 0000000..60bfae9
+--- /dev/null
++++ lib/rtbsd.h
+@@ -0,0 +1,58 @@
++/*
++ * Copyright (c) 2011 Gaetano Catalli.
++ *
++ * Licensed under the Apache License, Version 2.0 (the "License");
++ * you may not use this file except in compliance with the License.
++ * You may obtain a copy of the License at:
++ *
++ *     http://www.apache.org/licenses/LICENSE-2.0
++ *
++ * Unless required by applicable law or agreed to in writing, software
++ * distributed under the License is distributed on an "AS IS" BASIS,
++ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
++ * See the License for the specific language governing permissions and
++ * limitations under the License.
++ */
++
++#ifndef RTBSD_H
++#define RTBSD_H 1
++
++#include "list.h"
++
++/*
++ * A digested version of a message received from a PF_ROUTE socket which
++ * indicates that a network device has been created or destroyed or changed.
++ */
++struct rtbsd_change {
++    /* Copied from struct if_msghdr. */
++    int msg_type;             /* e.g. XXX. */
++
++    /* Copied from struct if_msghdr. */
++    int if_index;              /* Index of network device. */
++
++    char if_name[IF_NAMESIZE];         /* Name of network device. */
++    int master_ifindex;         /* Ifindex of datapath master (0 if none). */
++};
++
++/*
++ * Function called to report that a netdev has changed.  'change' describes the
++ * specific change.  It may be null if the buffer of change information
++ * overflowed, in which case the function must assume that every device may
++ * have changed.  'aux' is as specified in the call to
++ * rtbsd_notifier_register().
++ */
++typedef void rtbsd_notify_func(const struct rtbsd_change *, void *aux);
++
++struct rtbsd_notifier {
++    struct list node;
++    rtbsd_notify_func *cb;
++    void *aux;
++};
++
++int rtbsd_notifier_register(struct rtbsd_notifier *,
++                                rtbsd_notify_func *, void *aux);
++void rtbsd_notifier_unregister(struct rtbsd_notifier *);
++void rtbsd_notifier_run(void);
++void rtbsd_notifier_wait(void);
++
++#endif /* rtbsd.h */
+diff --git lib/socket-util.c lib/socket-util.c
+index 82a33c2..b14eef5 100644
+--- lib/socket-util.c
++++ lib/socket-util.c
+@@ -85,12 +85,14 @@ set_nonblocking(int fd)
+ static int
+ set_dscp(int fd, uint8_t dscp)
+ {
++    int val;
++
+     if (dscp > 63) {
+         return EINVAL;
+     }
+ 
+-    dscp = dscp << 2;
+-    if (setsockopt(fd, IPPROTO_IP, IP_TOS, &dscp, sizeof dscp)) {
++    val = dscp << 2;
++    if (setsockopt(fd, IPPROTO_IP, IP_TOS, &val, sizeof val)) {
+         return errno;
+     }
+ 
+diff --git lib/vconn.c lib/vconn.c
+index 5cd708d..dd198bc 100644
+--- lib/vconn.c
++++ lib/vconn.c
+@@ -286,13 +286,7 @@ vconn_open_block(const char *name, int min_version, struct vconn **vconnp)
+ 
+     error = vconn_open(name, min_version, &vconn, DSCP_DEFAULT);
+     if (!error) {
+-        while ((error = vconn_connect(vconn)) == EAGAIN) {
+-            vconn_run(vconn);
+-            vconn_run_wait(vconn);
+-            vconn_connect_wait(vconn);
+-            poll_block();
+-        }
+-        assert(error != EINPROGRESS);
++        error = vconn_connect_block(vconn);
+     }
+ 
+     if (error) {
+@@ -621,6 +615,24 @@ do_send(struct vconn *vconn, struct ofpbuf *msg)
+     return retval;
+ }
+ 
++/* Same as vconn_connect(), except that it waits until the connection on
++ * 'vconn' completes or fails.  Thus, it will never return EAGAIN. */
++int
++vconn_connect_block(struct vconn *vconn)
++{
++    int error;
++
++    while ((error = vconn_connect(vconn)) == EAGAIN) {
++        vconn_run(vconn);
++        vconn_run_wait(vconn);
++        vconn_connect_wait(vconn);
++        poll_block();
++    }
++    assert(error != EINPROGRESS);
++
++    return error;
++}
++
+ /* Same as vconn_send, except that it waits until 'msg' can be transmitted. */
+ int
+ vconn_send_block(struct vconn *vconn, struct ofpbuf *msg)
+diff --git lib/vconn.h lib/vconn.h
+index ee4a568..913364e 100644
+--- lib/vconn.h
++++ lib/vconn.h
+@@ -1,5 +1,5 @@
+ /*
+- * Copyright (c) 2008, 2009, 2010, 2011 Nicira, Inc.
++ * Copyright (c) 2008, 2009, 2010, 2011, 2012 Nicira, Inc.
+  *
+  * Licensed under the Apache License, Version 2.0 (the "License");
+  * you may not use this file except in compliance with the License.
+@@ -55,6 +55,7 @@ void vconn_run(struct vconn *);
+ void vconn_run_wait(struct vconn *);
+ 
+ int vconn_open_block(const char *name, int min_version, struct vconn **);
++int vconn_connect_block(struct vconn *);
+ int vconn_send_block(struct vconn *, struct ofpbuf *);
+ int vconn_recv_block(struct vconn *, struct ofpbuf **);
+ 
+diff --git lib/vlandev.c lib/vlandev.c
+index 77e8e93..ffb8e73 100644
+--- lib/vlandev.c
++++ lib/vlandev.c
+@@ -23,13 +23,13 @@
+ #include <sys/stat.h>
+ 
+ #include "hash.h"
+-#include "rtnetlink-link.h"
+ #include "shash.h"
+ #include "vlog.h"
+ 
+ VLOG_DEFINE_THIS_MODULE(vlandev);
+ 
+ #ifdef __linux__
++#include "rtnetlink-link.h"
+ #include <linux/if_vlan.h>
+ #include <linux/sockios.h>
+ #include "netdev-linux.h"
+diff --git ofproto/ofproto-dpif-sflow.c ofproto/ofproto-dpif-sflow.c
+index 611f89a..23f5498 100644
+--- ofproto/ofproto-dpif-sflow.c
++++ ofproto/ofproto-dpif-sflow.c
+@@ -18,6 +18,7 @@
+ #include <config.h>
+ #include "ofproto-dpif-sflow.h"
+ #include <inttypes.h>
++#include <sys/socket.h>
+ #include <net/if.h>
+ #include <stdlib.h>
+ #include "collectors.h"
+diff --git tests/ofproto-dpif.at tests/ofproto-dpif.at
+index 9c3e0dc..b3d1947 100644
+--- tests/ofproto-dpif.at
++++ tests/ofproto-dpif.at
+@@ -962,7 +962,7 @@ ovs-appctl -t test-netflow exit
+ 
+ AT_CHECK([[sed -e 's/, uptime [0-9]*//
+ s/, now [0-9.]*//
+-s/time \([0-9]*\)\.\.\.\1\b/time <moment>/
++s/time \([0-9]*\)\.\.\.\1$/time <moment>/
+ s/time [0-9]*\.\.\.[0-9]*/time <range>/
+ ' netflow.log]], [0],
+   [header: v5, seq 0, engine 2,1
+diff --git tests/ovs-vsctl.at tests/ovs-vsctl.at
+index 584ee79..9e6b4a9 100644
+--- tests/ovs-vsctl.at
++++ tests/ovs-vsctl.at
+@@ -769,7 +769,7 @@ AT_CHECK(
+ 
+ ])
+ m4_define([VSCTL_CHECK_FIND],
+-  [AT_CHECK([ovs-vsctl --bare --timeout=5 --no-wait -vreconnect:ANY:emer --db=unix:socket -- --columns=name find bridge '$1' | sort | xargs echo], [0], [$2
++  [AT_CHECK([echo `ovs-vsctl --bare --timeout=5 --no-wait -vreconnect:ANY:emer --db=unix:socket -- --columns=name find bridge '$1' | sort`], [0], [$2
+ ])])
+ 
+ # Arithmetic relational operators without keys.
+diff --git tests/ovsdb-server.at tests/ovsdb-server.at
+index f5db1a8..b81878c 100644
+--- tests/ovsdb-server.at
++++ tests/ovsdb-server.at
+@@ -322,8 +322,8 @@ dnl We can't fully re-check the contents of the database log, because the
+ dnl order of the records is not predictable, but there should only be 4 lines
+ dnl in it now.
+ AT_CAPTURE_FILE([db])
+-AT_CHECK([wc -l < db], [0], [4
+-], [], [test ! -e pid || kill `cat pid`])
++AT_CHECK([test `wc -l < db` -eq 4], [0], [], [],
++  [test ! -e pid || kill `cat pid`])
+ dnl And check that the dumped data is the same too:
+ AT_CHECK([ovsdb-client dump unix:socket ordinals], [0], [stdout], [ignore],
+   [test ! -e pid || kill `cat pid`])
+@@ -348,8 +348,8 @@ AT_CHECK(
+   [0], [[[{"count":3}]
+ ]], [ignore], [test ! -e pid || kill `cat pid`])
+ dnl There should be 6 lines in the log now.
+-AT_CHECK([wc -l < db], [0], [6
+-], [], [test ! -e pid || kill `cat pid`])
++AT_CHECK([test `wc -l < db` -eq 6], [0], [], [],
++  [test ! -e pid || kill `cat pid`])
+ dnl Then check that the dumped data is correct.
+ AT_CHECK([ovsdb-client dump unix:socket ordinals], [0], [stdout], [ignore],
+   [test ! -e pid || kill `cat pid`])
+diff --git tests/ovsdb-tool.at tests/ovsdb-tool.at
+index 2d19b32..87949bb 100644
+--- tests/ovsdb-tool.at
++++ tests/ovsdb-tool.at
+@@ -121,8 +121,7 @@ dnl We can't fully re-check the contents of the database log, because the
+ dnl order of the records is not predictable, but there should only be 4 lines
+ dnl in it now.
+ AT_CAPTURE_FILE([db])
+-AT_CHECK([wc -l < db], [0], [4
+-])
++AT_CHECK([test `wc -l < db` -eq 4])
+ dnl And check that the dumped data is the same too:
+ AT_CHECK([[ovsdb-server --unixctl="`pwd`"/unixctl --remote=punix:socket --run "ovsdb-client dump unix:socket ordinals" db]],
+   [0], [stdout], [ignore])
+@@ -185,8 +184,7 @@ dnl We can't fully re-check the contents of the database log, because the
+ dnl order of the records is not predictable, but there should only be 4 lines
+ dnl in it now.
+ AT_CAPTURE_FILE([db])
+-AT_CHECK([wc -l < db], [0], [4
+-])
++AT_CHECK([test `wc -l < db` -eq 4])
+ dnl And check that the dumped data is the same except for the removed column:
+ AT_CHECK([[ovsdb-server --unixctl="`pwd`"/unixctl --remote=punix:socket --run "ovsdb-client dump unix:socket ordinals" db]],
+   [0], [stdout], [ignore])
+@@ -248,8 +246,7 @@ dnl We can't fully re-check the contents of the database log, because the
+ dnl order of the records is not predictable, but there should only be 4 lines
+ dnl in it now.
+ AT_CAPTURE_FILE([db])
+-AT_CHECK([wc -l < db], [0], [4
+-])
++AT_CHECK([test `wc -l < db` -eq 4])
+ dnl And check that the dumped data is the same except for the added column:
+ AT_CHECK([[ovsdb-server --unixctl="`pwd`"/unixctl --remote=punix:socket --run "ovsdb-client dump unix:socket ordinals" db]],
+   [0], [stdout], [ignore])
+diff --git tests/test-vconn.c tests/test-vconn.c
+index 31451a2..3f57b6d 100644
+--- tests/test-vconn.c
++++ tests/test-vconn.c
+@@ -140,20 +140,26 @@ static void
+ test_refuse_connection(int argc OVS_UNUSED, char *argv[])
+ {
+     const char *type = argv[1];
+-    int expected_error;
+     struct fake_pvconn fpv;
+     struct vconn *vconn;
+-
+-    expected_error = (!strcmp(type, "unix") ? EPIPE
+-                      : !strcmp(type, "tcp") ? ECONNRESET
+-                      : EPROTO);
++    int error;
+ 
+     fpv_create(type, &fpv);
+     CHECK_ERRNO(vconn_open(fpv.vconn_name, OFP10_VERSION, &vconn,
+                            DSCP_DEFAULT), 0);
+     fpv_close(&fpv);
+     vconn_run(vconn);
+-    CHECK_ERRNO(vconn_connect(vconn), expected_error);
++
++    error = vconn_connect_block(vconn);
++    if (!strcmp(type, "tcp")) {
++        if (error != ECONNRESET && error != EPIPE) {
++            ovs_fatal(0, "unexpected vconn_connect() return value %d (%s)",
++                      error, strerror(error));
++        }
++    } else {
++        CHECK_ERRNO(error, !strcmp(type, "unix") ? EPIPE : EPROTO);
++    }
++
+     vconn_close(vconn);
+     fpv_destroy(&fpv);
+ }
+@@ -194,6 +200,7 @@ test_read_hello(int argc OVS_UNUSED, char *argv[])
+     struct fake_pvconn fpv;
+     struct vconn *vconn;
+     struct stream *stream;
++    int error;
+ 
+     fpv_create(type, &fpv);
+     CHECK_ERRNO(vconn_open(fpv.vconn_name, OFP10_VERSION, &vconn,
+@@ -223,7 +230,11 @@ test_read_hello(int argc OVS_UNUSED, char *argv[])
+        poll_block();
+     }
+     stream_close(stream);
+-    CHECK_ERRNO(vconn_connect(vconn), ECONNRESET);
++    error = vconn_connect_block(vconn);
++    if (error != ECONNRESET && error != EPIPE) {
++        ovs_fatal(0, "unexpected vconn_connect() return value %d (%s)",
++                  error, strerror(error));
++    }
+     vconn_close(vconn);
+ }
+ 
+@@ -313,7 +324,7 @@ test_send_hello(const char *type, const void *out, size_t out_size,
+        poll_block();
+     }
+     stream_close(stream);
+-    CHECK_ERRNO(vconn_recv(vconn, &msg), EOF);
++    CHECK_ERRNO(vconn_recv_block(vconn, &msg), EOF);
+     vconn_close(vconn);
+ }
+ 
+diff --git utilities/ovs-pki.in utilities/ovs-pki.in
+index 019ffcf..2dc4060 100755
+--- utilities/ovs-pki.in
++++ utilities/ovs-pki.in
+@@ -24,6 +24,38 @@ batch=no
+ log='@LOGDIR@/ovs-pki.log'
+ keytype=rsa
+ bits=2048
++
++# OS-specific compatibility routines
++case $(uname -s) in
++FreeBSD)
++    file_mod_epoch()
++    {
++        stat -r "$1" | awk '{print $10}'
++    }
++
++    file_mod_date()
++    {
++        stat -f '%Sm' "$1"
++    }
++
++    sha1sum()
++    {
++        sha1 "$@"
++    }
++    ;;
++*)
++    file_mod_epoch()
++    {
++        date -r "$1" +%s
++    }
++
++    file_mod_date()
++    {
++        date -r "$1"
++    }
++    ;;
++esac
++
+ for option; do
+     # This option-parsing mechanism borrowed from a Autoconf-generated
+     # configure script under the following license:
+@@ -365,7 +397,7 @@ make_tmpdir() {
+ fingerprint() {
+     file=$1
+     name=${1-$2}
+-    date=$(date -r $file)
++    date=$(file_mod_date "$file")
+     if grep -e '-BEGIN CERTIFICATE-' "$file" > /dev/null; then
+         fingerprint=$(openssl x509 -noout -in "$file" -fingerprint |
+                       sed 's/SHA1 Fingerprint=//' | tr -d ':')
+@@ -609,7 +641,7 @@ elif test "$command" = expire; then
+     for type in switch controller; do
+         cd "$pkidir/${type}ca/incoming" || exit 1
+         for file in $(glob "*"); do
+-            time=$(date -r "$file" +%s)
++            time=$(file_mod_epoch "$file")
+             if test "$time" -lt "$cutoff"; then
+                 rm -f "$file"
+             fi
+diff --git xenserver/opt_xensource_libexec_interface-reconfigure xenserver/opt_xensource_libexec_interface-reconfigure
+index 6c6de9f..72bd5e4 100755
+--- xenserver/opt_xensource_libexec_interface-reconfigure
++++ xenserver/opt_xensource_libexec_interface-reconfigure
+@@ -1,4 +1,4 @@
+-#!/usr/bin/python
++#!/usr/bin/env python
+ #
+ # Copyright (c) 2008,2009 Citrix Systems, Inc.
+ #
diff --git a/net/openvswitch/files/patch-lib-backtrace.c b/net/openvswitch/files/patch-lib-backtrace.c
deleted file mode 100644
index 5fc96f82b3b7..000000000000
--- a/net/openvswitch/files/patch-lib-backtrace.c
+++ /dev/null
@@ -1,18 +0,0 @@
---- lib/backtrace.c.orig	2011-11-01 12:07:55.000000000 +0100
-+++ lib/backtrace.c	2011-11-01 12:09:28.000000000 +0100
-@@ -83,6 +83,7 @@
- void
- backtrace_capture(struct backtrace *backtrace)
- {
-+#ifndef __FreeBSD__
-     void **frame;
-     size_t n;
- 
-@@ -95,4 +96,7 @@
-         backtrace->frames[n++] = (uintptr_t) frame[1];
-     }
-     backtrace->n_frames = n;
-+#else
-+    backtrace->n_frames = 0;
-+#endif
- }
diff --git a/net/openvswitch/files/patch-lib-dpif.c b/net/openvswitch/files/patch-lib-dpif.c
deleted file mode 100644
index f2d2276e6550..000000000000
--- a/net/openvswitch/files/patch-lib-dpif.c
+++ /dev/null
@@ -1,14 +0,0 @@
---- lib/dpif.c.orig	2011-11-02 07:36:34.000000000 +0100
-+++ lib/dpif.c	2011-11-02 07:36:56.000000000 +0100
-@@ -247,7 +247,11 @@
-     dp_initialize();
- 
-     if (!type || *type == '\0') {
-+#ifdef HAVE_NETLINK
-         type = "system";
-+#else
-+        type = "netdev";
-+#endif
-     }
- 
-     registered_class = shash_find_data(&dpif_classes, type);
diff --git a/net/openvswitch/files/patch-lib-netdev-bsd.c b/net/openvswitch/files/patch-lib-netdev-bsd.c
deleted file mode 100644
index 80255ad43aa5..000000000000
--- a/net/openvswitch/files/patch-lib-netdev-bsd.c
+++ /dev/null
@@ -1,1581 +0,0 @@
-diff -NBubrw lib/netdev-bsd.c.orig lib/netdev-bsd.c
---- lib/netdev-bsd.c.orig	1970-01-01 01:00:00.000000000 +0100
-+++ lib/netdev-bsd.c	2011-11-28 15:13:26.920783291 +0100
-@@ -0,0 +1,1577 @@
-+/*
-+ * Copyright (c) 2011 Gaetano Catalli. 
-+ * 
-+ * 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 ``AS IS'' WITHOUT ANY WARRANTIES OF ANY KIND.
-+ *
-+ */
-+
-+#include <stdlib.h>
-+#include <config.h>
-+#include <assert.h>
-+#include <errno.h>
-+#include <fcntl.h>
-+#include <sys/types.h>
-+#include <sys/time.h>
-+#include <sys/ioctl.h>
-+#include <sys/socket.h>
-+#include <sys/sockio.h>
-+#include <ifaddrs.h>
-+#include <pcap/pcap.h>
-+#include <net/if.h>
-+#include <net/if_dl.h>
-+#include <net/if_media.h>
-+#include <net/if_tap.h>
-+#include <netinet/in.h>
-+#include <net/if_mib.h>
-+#include <poll.h>
-+#include <string.h>
-+#include <unistd.h>
-+#include <sys/sysctl.h>
-+
-+#include "rtbsd.h"
-+#include "coverage.h"
-+#include "dynamic-string.h"
-+#include "fatal-signal.h"
-+#include "netdev-provider.h"
-+#include "ofpbuf.h"
-+#include "openflow/openflow.h"
-+#include "packets.h"
-+#include "poll-loop.h"
-+#include "socket-util.h"
-+#include "shash.h"
-+#include "svec.h"
-+#include "vlog.h"
-+
-+VLOG_DEFINE_THIS_MODULE(netdev_bsd)
-+
-+
-+/*
-+ * This file implements objects to access interfaces.
-+ * Externally, interfaces are represented by two structures:
-+ *   + struct netdev_dev, representing a network device,
-+ *     containing e.g. name and a refcount;
-+ *     We can have private variables by embedding the
-+ *     struct netdev_dev into our own structure
-+ *     (e.g. netdev_dev_bsd)
-+ *
-+ *   + struct netdev, representing an instance of an open netdev_dev.
-+ *     The structure contains a pointer to the 'struct netdev'
-+ *     representing the device. Again, private information
-+ *     such as file descriptor etc. are stored in our
-+ *     own struct netdev_bsd which includes a struct netdev.
-+ *
-+ * Both 'struct netdev' and 'struct netdev_dev' are referenced
-+ * in containers which hold pointers to the data structures.
-+ * We can reach our own struct netdev_XXX_bsd by putting a
-+ * struct netdev_XXX within our own struct, and using CONTAINER_OF
-+ * to access the parent structure.
-+ */
-+struct netdev_bsd {
-+    struct netdev netdev;
-+
-+    int netdev_fd;   /* Selectable file descriptor for the network device.
-+                        This descriptor will be used for polling operations */
-+    
-+    pcap_t *pcap_handle;  /* Packet capture descriptor for a system network
-+                             device */
-+};
-+
-+struct netdev_dev_bsd {
-+    struct netdev_dev netdev_dev;
-+    unsigned int cache_valid;
-+
-+    int ifindex;
-+    uint8_t etheraddr[ETH_ADDR_LEN];
-+    struct in_addr in4;
-+    struct in6_addr in6;
-+    int mtu;
-+    int carrier;
-+    
-+    bool tap_opened;
-+    int tap_fd;         /* TAP character device, if any */
-+};
-+
-+
-+enum {
-+    VALID_IFINDEX = 1 << 0,
-+    VALID_ETHERADDR = 1 << 1,
-+    VALID_IN4 = 1 << 2,
-+    VALID_IN6 = 1 << 3,
-+    VALID_MTU = 1 << 4,
-+    VALID_CARRIER = 1 << 5
-+};
-+
-+/* An AF_INET socket (used for ioctl operations). */
-+static int af_inet_sock = -1;
-+
-+#define PCAP_SNAPLEN 1024
-+
-+/*
-+ * A BSD network device notifier.
-+ *
-+ * Represents a handler to be invoked on a device when some event occurs.
-+ * Contains handler, parameters (in netdev_notifier) and link fields for the
-+ * list (in struct list).
-+ */
-+struct netdev_bsd_notifier {
-+    struct netdev_notifier notifier;    /* Handler and arguments */
-+    struct list node;           /* Link fields for the list */
-+};
-+
-+/*
-+ * All 'struct netdev_bsd_notifier' objects are linked as children of a generic
-+ * 'struct shash_node', there is one shash_node per interface, and the
-+ * interface name is the search key.  In turn, all the 'struct shash_node' are
-+ * stored in a container, all_bsd_notifiers.
-+ *
-+ * A 'netdev_bsd_notifier' is created and added to the all_bsd_notifiers
-+ * using 'netdev_bsd_poll_add()' XXX again, same code as netdev-linux
-+ */
-+static struct shash all_bsd_notifiers =
-+    SHASH_INITIALIZER(&all_bsd_notifiers);
-+
-+/* 
-+ * Openvswitch can register multiple handlers on route-related events.
-+ * The descriptor for each handler is a struct rtbsd_notifier
-+ * that contains the function and a parameter.
-+ *
-+ * In this module we call rtbsd_notifier_register() to invoke
-+ * the function netdev_bsd_poll_cb() on the all_bsd_notifiers above.
-+ */
-+static struct rtbsd_notifier netdev_bsd_poll_notifier;
-+
-+/*
-+ * Notifier used to invalidate device informations in case of status change.
-+ *
-+ * It will be registered with a 'rtbsd_notifier_register()' when the first
-+ * device will be created with the call of either 'netdev_bsd_tap_create()' or
-+ * 'netdev_bsd_system_create()'.
-+ *
-+ * The callback associated with this notifier ('netdev_bsd_cache_cb()') will
-+ * invalidate cached information about the device.
-+ */
-+static struct rtbsd_notifier netdev_bsd_cache_notifier;
-+static int cache_notifier_refcount;
-+
-+static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(5, 20);
-+
-+static int netdev_bsd_do_ioctl(const struct netdev *, struct ifreq *,
-+                                 unsigned long cmd, const char *cmd_name);
-+static void destroy_tap(int fd, const char *name);
-+static int get_flags(const struct netdev *, int *flagsp);
-+static int set_flags(struct netdev *, int flags);
-+static int do_set_addr(struct netdev *netdev,
-+                       int ioctl_nr, const char *ioctl_name,
-+                       struct in_addr addr);
-+static int get_etheraddr(const char *netdev_name, uint8_t ea[ETH_ADDR_LEN]);
-+static int set_etheraddr(const char *netdev_name, int hwaddr_family,
-+                         int hwaddr_len, const uint8_t[ETH_ADDR_LEN]);
-+static int get_ifindex(const struct netdev *, int *ifindexp);
-+
-+static int netdev_bsd_init(void);
-+
-+static bool
-+is_netdev_bsd_class(const struct netdev_class *netdev_class)
-+{
-+    return netdev_class->init == netdev_bsd_init;
-+}
-+
-+static struct netdev_bsd *
-+netdev_bsd_cast(const struct netdev *netdev)
-+{
-+    assert(is_netdev_bsd_class(netdev_dev_get_class(netdev_get_dev(netdev))));
-+    return CONTAINER_OF(netdev, struct netdev_bsd, netdev);
-+}
-+
-+static struct netdev_dev_bsd *
-+netdev_dev_bsd_cast(const struct netdev_dev *netdev_dev)
-+{
-+    assert(is_netdev_bsd_class(netdev_dev_get_class(netdev_dev)));
-+    return CONTAINER_OF(netdev_dev, struct netdev_dev_bsd, netdev_dev);
-+}
-+
-+/* Initialize the AF_INET socket used for ioctl operations */
-+static int
-+netdev_bsd_init(void)
-+{
-+    static int status = -1;
-+    
-+    if (status >= 0) {  /* already initialized */
-+        return status;
-+    }
-+
-+    af_inet_sock = socket(AF_INET, SOCK_DGRAM, 0);
-+    status = af_inet_sock >= 0 ? 0 : errno;
-+
-+    if (status) {
-+        VLOG_ERR("failed to create inet socket: %s", strerror(status));
-+    }
-+        
-+    return status;
-+}
-+
-+/* 
-+ * Perform periodic work needed by netdev. In BSD netdevs it checks for any
-+ * interface status changes, and eventually calls all the user callbacks.
-+ */
-+static void
-+netdev_bsd_run(void)
-+{
-+    rtbsd_notifier_run();
-+}
-+
-+/* 
-+ * Arranges for poll_block() to wake up if the "run" member function needs to
-+ * be called. 
-+ */
-+static void
-+netdev_bsd_wait(void)
-+{
-+    rtbsd_notifier_wait();
-+}
-+
-+/* Invalidate cache in case of interface status change. */
-+static void
-+netdev_bsd_cache_cb(const struct rtbsd_change *change,
-+                      void *aux OVS_UNUSED)
-+{
-+    struct netdev_dev_bsd *dev;
-+    
-+    if (change) {
-+        struct netdev_dev *base_dev = netdev_dev_from_name(change->if_name);
-+
-+        if (base_dev) {
-+            const struct netdev_class *netdev_class =
-+                                                netdev_dev_get_class(base_dev);
-+
-+            if (is_netdev_bsd_class(netdev_class)) {
-+                dev = netdev_dev_bsd_cast(base_dev);
-+                dev->cache_valid = 0;
-+            }
-+        }
-+    } else {
-+        /*
-+         * XXX the API is lacking, we should be able to iterate on the list of
-+         * netdevs without having to store the info in a temp shash.
-+         */
-+        struct shash device_shash;
-+        struct shash_node *node;
-+
-+        shash_init(&device_shash);
-+        netdev_dev_get_devices(&netdev_bsd_class, &device_shash);
-+        SHASH_FOR_EACH (node, &device_shash) {
-+            dev = node->data;
-+            dev->cache_valid = 0;
-+        }
-+        shash_destroy(&device_shash);
-+    }
-+}
-+
-+/* Allocate a netdev_dev_bsd structure */
-+static int
-+netdev_bsd_create_system(const char *name, const char *type OVS_UNUSED,
-+                  const struct shash *args OVS_UNUSED, 
-+                  struct netdev_dev **netdev_devp)
-+{
-+    struct netdev_dev_bsd *netdev_dev;
-+    int ret = 0;
-+
-+    if (!cache_notifier_refcount) {
-+        ret = rtbsd_notifier_register(&netdev_bsd_cache_notifier,
-+                                                netdev_bsd_cache_cb, NULL);
-+        if (ret) {
-+            return ret;
-+        }
-+    }
-+    cache_notifier_refcount++;
-+
-+    netdev_dev = xzalloc(sizeof *netdev_dev);
-+    netdev_dev_init(&netdev_dev->netdev_dev, name, &netdev_bsd_class);
-+    *netdev_devp = &netdev_dev->netdev_dev;
-+
-+    return ret;
-+}
-+
-+/* 
-+ * Allocate a netdev_dev_bsd structure with 'tap' class.
-+ */
-+static int
-+netdev_bsd_create_tap(const char *name, const char *type OVS_UNUSED,
-+                  const struct shash *args OVS_UNUSED, 
-+                  struct netdev_dev **netdev_devp)
-+{
-+    struct netdev_dev_bsd *netdev_dev;
-+    int error = 0;
-+    struct ifreq ifr;
-+
-+    if (!cache_notifier_refcount) {
-+        error = rtbsd_notifier_register(&netdev_bsd_cache_notifier,
-+                                                netdev_bsd_cache_cb, NULL);
-+        if (error) {
-+            return error;
-+        }
-+    }
-+    cache_notifier_refcount++;
-+
-+    /* allocate the device structure and set the internal flag */
-+    netdev_dev = xzalloc(sizeof *netdev_dev);
-+    
-+    memset(&ifr, 0, sizeof(ifr));
-+
-+    /* Create a tap device by opening /dev/tap.  The TAPGIFNAME ioctl is used
-+     * to retrieve the name of the tap device. */
-+    netdev_dev->tap_fd = open("/dev/tap", O_RDWR);
-+    if (netdev_dev->tap_fd < 0) {
-+        error = errno;
-+        VLOG_WARN("opening \"/dev/tap\" failed: %s", strerror(error));
-+        goto error;
-+    }
-+    
-+    /* Retrieve tap name (e.g. tap0) */
-+    if (ioctl(netdev_dev->tap_fd, TAPGIFNAME, &ifr) == -1) {
-+        /* XXX Need to destroy the device? */
-+        error = errno;
-+        goto error;
-+    }
-+    
-+    /* Change the name of the tap device */
-+    ifr.ifr_data = (void *)name;
-+    if (ioctl(af_inet_sock, SIOCSIFNAME, &ifr) == -1) {
-+        error = errno;
-+        destroy_tap(netdev_dev->tap_fd, ifr.ifr_name);
-+        goto error;
-+    }
-+
-+    /* set non-blocking. */
-+    error = set_nonblocking(netdev_dev->tap_fd);
-+    if (error) {
-+        destroy_tap(netdev_dev->tap_fd, name);
-+        goto error;
-+    }
-+ 
-+    /* Turn device UP */
-+    ifr.ifr_flags = (uint16_t)IFF_UP;
-+    ifr.ifr_flagshigh = 0;
-+    strncpy(ifr.ifr_name, name, sizeof ifr.ifr_name);
-+    if (ioctl(af_inet_sock, SIOCSIFFLAGS, &ifr) == -1) {
-+        error = errno;
-+        destroy_tap(netdev_dev->tap_fd, name);
-+        goto error;
-+    }
-+
-+    /* initialize the device structure and
-+     * link the structure to its netdev */
-+    netdev_dev_init(&netdev_dev->netdev_dev, name, &netdev_tap_class);
-+    *netdev_devp = &netdev_dev->netdev_dev;
-+
-+    return 0;
-+
-+error:
-+    free(netdev_dev);
-+    return error;
-+}
-+
-+static void
-+netdev_bsd_destroy(struct netdev_dev *netdev_dev_)
-+{
-+    struct netdev_dev_bsd *netdev_dev = netdev_dev_bsd_cast(netdev_dev_);
-+
-+    cache_notifier_refcount--;
-+    if (cache_notifier_refcount == 0) {
-+        rtbsd_notifier_unregister(&netdev_bsd_cache_notifier);
-+    }
-+
-+    if (netdev_dev->tap_fd >= 0 && 
-+            !strcmp(netdev_dev_get_type(netdev_dev_), "tap")) {
-+        destroy_tap(netdev_dev->tap_fd, netdev_dev_get_name(netdev_dev_));
-+    }
-+    free(netdev_dev);
-+}
-+
-+
-+static int
-+netdev_bsd_open_system(struct netdev_dev *netdev_dev_, int ethertype,
-+                       struct netdev **netdevp)
-+{
-+    struct netdev_dev_bsd *netdev_dev = netdev_dev_bsd_cast(netdev_dev_);
-+    struct netdev_bsd *netdev;
-+    int error;
-+    enum netdev_flags flags;
-+    
-+    /* Allocate network device. */
-+    netdev = xcalloc(1, sizeof *netdev);
-+    netdev->netdev_fd = -1;
-+    netdev_init(&netdev->netdev, netdev_dev_);
-+
-+    /* Verify that the netdev really exists by attempting to read its flags */
-+    error = netdev_get_flags(&netdev->netdev, &flags);
-+    if (error == ENXIO) {
-+        goto error;
-+    }
-+
-+    /* The first user that opens a tap port(from dpif_create_and_open()) will
-+     * receive the file descriptor associated with the tap device. Instead, the
-+     * following users will open the tap device as a normal 'system' device. */
-+    if (!strcmp(netdev_dev_get_type(netdev_dev_), "tap") &&
-+            !netdev_dev->tap_opened) {
-+        netdev_dev->tap_opened = true;
-+        netdev->netdev_fd = netdev_dev->tap_fd;
-+    } else if (ethertype != NETDEV_ETH_TYPE_NONE) {
-+        char errbuf[PCAP_ERRBUF_SIZE];
-+        int one = 1;
-+
-+        /* open the pcap device. The device is opened in non-promiscuous mode
-+         * because the interface flags are manually set by the caller. */
-+        netdev->pcap_handle = pcap_open_live(netdev_dev_->name, PCAP_SNAPLEN,
-+                                             0, 1000, errbuf);
-+        if (netdev->pcap_handle == NULL) {
-+            error = errno;
-+            goto error;
-+        }
-+
-+        /* initialize netdev->netdev_fd */
-+        netdev->netdev_fd = pcap_get_selectable_fd(netdev->pcap_handle);
-+        if (netdev->netdev_fd == -1) {
-+            error = errno;
-+            goto error;
-+        }
-+
-+        /* Set non-blocking mode. Also the BIOCIMMEDIATE ioctl must be called
-+         * on the file descriptor returned by pcap_get_selectable_fd to achieve
-+         * a real non-blocking behaviour.*/
-+        error = pcap_setnonblock(netdev->pcap_handle, 1, errbuf);
-+        if (error == -1) {
-+            error = errno;
-+            goto error;
-+        }
-+        
-+        /* This call assure that reads return immediately upon packet reception.
-+         * Otherwise, a read will block until either the kernel buffer becomes
-+         * full or a timeout occurs. */
-+        if(ioctl(netdev->netdev_fd, BIOCIMMEDIATE, &one) < 0 ) {
-+            VLOG_ERR("ioctl(BIOCIMMEDIATE) on %s device failed: %s",
-+                     netdev_dev_get_name(netdev_dev_), strerror(errno));
-+            error = errno;
-+            goto error;
-+        }
-+
-+        /* Capture only incoming packets */
-+        error = pcap_setdirection(netdev->pcap_handle, PCAP_D_IN);
-+        if (error == -1) {
-+            error = errno;
-+            goto error;
-+        }
-+    }
-+    *netdevp = &netdev->netdev;
-+
-+    return 0;
-+
-+error:
-+    netdev_uninit(&netdev->netdev, true);
-+    return error;
-+}
-+
-+
-+/* Close a 'netdev'. */
-+static void
-+netdev_bsd_close(struct netdev *netdev_)
-+{
-+    struct netdev_bsd *netdev = netdev_bsd_cast(netdev_);
-+
-+    if (netdev->netdev_fd >= 0 && strcmp(netdev_get_type(netdev_), "tap")) {
-+        pcap_close(netdev->pcap_handle);
-+    }
-+
-+    free(netdev);
-+}
-+
-+
-+/* Initializes 'svec' with a list of the names of all known network devices. */
-+static int
-+netdev_bsd_enumerate(struct svec *svec)
-+{
-+    struct if_nameindex *names;
-+
-+    names = if_nameindex();
-+    if (names) {
-+        size_t i;
-+
-+        for (i = 0; names[i].if_name != NULL; i++) {
-+            svec_add(svec, names[i].if_name);
-+        }
-+        if_freenameindex(names);
-+        return 0;
-+    } else {
-+        VLOG_WARN("could not obtain list of network device names: %s",
-+                  strerror(errno));
-+        return errno;
-+    }
-+}
-+
-+/* The recv callback of the netdev class returns the number of bytes of the
-+ * received packet.
-+ *
-+ * This can be done by the pcap_next() function. Unfortunately pcap_next() does
-+ * not make difference between a missing packet on the capture interface and
-+ * an error during the file capture.  We can use the pcap_dispatch() function 
-+ * instead, which is able to distinguish between errors and null packet.
-+ *
-+ * To make pcap_dispatch() returns the number of bytes read from the interface
-+ * we need to define the following callback and argument. 
-+ */
-+struct pcap_arg {
-+    void *data;
-+    int size;
-+    int retval;
-+};
-+
-+/*
-+ * This callback will be executed on every captured packet.
-+ * 
-+ * If the packet captured by pcap_dispatch() does not fit the pcap buffer,
-+ * pcap returns a truncated packet and we follow this behavior.
-+ *
-+ * The argument args->retval is the packet size in bytes.
-+ */
-+static void 
-+proc_pkt(u_char *args_, const struct pcap_pkthdr *hdr, const u_char *packet)
-+{
-+    struct pcap_arg *args = (struct pcap_arg *)args_;
-+
-+    if (args->size < hdr->len) {
-+        printf("%s Warning: Packet truncated'n", __func__);
-+        args->retval = args->size;
-+    } else {
-+        args->retval = hdr->len;
-+    }
-+
-+    /* copy the packet to our buffer */
-+    memcpy(args->data, packet, args->retval);
-+}
-+
-+/*
-+ * This function attempts to receive a packet from the specified network
-+ * device. It is assumed that the network device is a system device or a tap
-+ * device opened as a system one. In this case the read operation is performed
-+ * on the 'netdev' pcap descriptor.
-+ */
-+static int
-+netdev_bsd_recv_system(struct netdev_bsd *netdev, void *data, size_t size)
-+{
-+    struct pcap_arg arg;
-+    int ret;
-+
-+    if (netdev->netdev_fd < 0) {
-+        /* Device was opened with NETDEV_ETH_TYPE_NONE. */
-+        return -EAGAIN;
-+    }
-+    
-+    /* prepare the pcap argument to store the packet */
-+    arg.size = size;
-+    arg.data = data;
-+
-+    for (;;) {
-+        ret = pcap_dispatch(netdev->pcap_handle, 1, proc_pkt, (u_char *)&arg);
-+
-+        if (ret > 0) {
-+            return arg.retval;	/* arg.retval < 0 is handled in the caller */
-+        }
-+        if (ret == -1) {
-+            if (errno == EINTR) {
-+                 continue;
-+            }
-+        }
-+
-+        return -EAGAIN;
-+    }
-+}
-+
-+/*
-+ * This function attempts to receive a packet from the specified network
-+ * device. It is assumed that the network device is a tap device and the
-+ * 'netdev_fd' member of the 'netdev' structure is initialized with the tap
-+ * file descriptor.
-+ */
-+static int
-+netdev_bsd_recv_tap(struct netdev_bsd *netdev, void *data, size_t size)
-+{
-+    if (netdev->netdev_fd < 0) {
-+        /* Device was opened with NETDEV_ETH_TYPE_NONE. */
-+        return -EAGAIN;
-+    }
-+    
-+    for (;;) {
-+        ssize_t retval = read(netdev->netdev_fd, data, size);
-+        if (retval >= 0) {
-+            return retval;
-+        } else if (errno != EINTR) {
-+            if (errno != EAGAIN) {
-+                VLOG_WARN_RL(&rl, "error receiving Ethernet packet on %s: %s",
-+                             strerror(errno), netdev->netdev.netdev_dev->name);
-+            }
-+            return -errno;
-+        }
-+    }
-+}
-+
-+
-+/*
-+ * According with the nature of the device a different function must be called.
-+ * If the device is the bridge local port the 'netdev_bsd_recv_tap' function
-+ * must be called, otherwise the 'netdev_bsd_recv_system' function is called.
-+ *
-+ * type!="tap"                                        --->  system device.
-+ * type=="tap" && netdev_fd == tap_fd                 --->  internal tap device
-+ * type=="tap" && netdev_fd != tap_fd                 --->  internal tap device
-+ *                                                          opened as a system
-+ *                                                          device. 
-+ */
-+static int
-+netdev_bsd_recv(struct netdev *netdev_, void* data, size_t size)
-+{
-+    struct netdev_bsd *netdev = netdev_bsd_cast(netdev_);
-+    struct netdev_dev_bsd * netdev_dev =
-+        netdev_dev_bsd_cast(netdev_get_dev(netdev_));
-+
-+    if (!strcmp(netdev_get_type(netdev_), "tap") && 
-+            netdev->netdev_fd == netdev_dev->tap_fd) {
-+        return netdev_bsd_recv_tap(netdev, data, size);
-+    } else {
-+        return netdev_bsd_recv_system(netdev, data, size);
-+    }
-+}
-+
-+
-+/* 
-+ * Registers with the poll loop to wake up from the next call to poll_block()
-+ * when a packet is ready to be received with netdev_recv() on 'netdev'.
-+ */
-+static void
-+netdev_bsd_recv_wait(struct netdev *netdev_)
-+{
-+    struct netdev_bsd *netdev = netdev_bsd_cast(netdev_);
-+
-+    if (netdev->netdev_fd >= 0) {
-+        poll_fd_wait(netdev->netdev_fd, POLLIN);
-+    }
-+}
-+
-+/* Discards all packets waiting to be received from 'netdev'. */
-+static int
-+netdev_bsd_drain(struct netdev *netdev_)
-+{
-+    struct ifreq ifr;
-+    struct netdev_bsd *netdev = netdev_bsd_cast(netdev_);
-+
-+    strcpy(ifr.ifr_name, netdev_get_name(netdev_));
-+    if (ioctl(netdev->netdev_fd, BIOCFLUSH, &ifr) == -1) {
-+        VLOG_DBG_RL(&rl, "%s: ioctl(BIOCFLUSH) failed: %s",
-+                    netdev_get_name(netdev_), strerror(errno));
-+        return errno;
-+    }
-+    return 0;
-+}
-+
-+/* 
-+ * Send a packet on the specified network device. The device could be either a
-+ * system or a tap device.
-+ */
-+static int
-+netdev_bsd_send(struct netdev *netdev_, const void *data, size_t size)
-+{
-+    struct netdev_bsd *netdev = netdev_bsd_cast(netdev_);
-+    struct netdev_dev_bsd * netdev_dev =
-+        netdev_dev_bsd_cast(netdev_get_dev(netdev_));
-+
-+    /* XXX should support sending even if 'ethertype' was NETDEV_ETH_TYPE_NONE.
-+     */
-+    if (netdev->netdev_fd < 0) {
-+        return EPIPE;
-+    }
-+
-+    for (;;) {
-+        ssize_t retval;
-+        if (!strcmp(netdev_get_type(netdev_), "tap") && 
-+                netdev_dev->tap_fd == netdev->netdev_fd) {
-+            retval = write(netdev->netdev_fd, data, size);
-+        } else {
-+            retval = pcap_inject(netdev->pcap_handle, data, size);
-+        }
-+        if (retval < 0) {
-+            if (errno == EINTR) {
-+                continue;
-+            } else if (errno != EAGAIN) {
-+                VLOG_WARN_RL(&rl, "error sending Ethernet packet on %s: %s",
-+                             netdev_get_name(netdev_), strerror(errno));
-+            }
-+            return errno;
-+        } else if (retval != size) {
-+            VLOG_WARN_RL(&rl, "sent partial Ethernet packet (%zd bytes of "
-+                         "%zu) on %s", retval, size,
-+                         netdev_get_name(netdev_));
-+           return EMSGSIZE;
-+        } else {
-+            return 0;
-+        }
-+    }
-+}
-+
-+/*
-+ * Registers with the poll loop to wake up from the next call to poll_block()
-+ * when the packet transmission queue has sufficient room to transmit a packet
-+ * with netdev_send().
-+ */
-+static void
-+netdev_bsd_send_wait(struct netdev *netdev_)
-+{
-+    struct netdev_bsd *netdev = netdev_bsd_cast(netdev_);
-+
-+    if (netdev->netdev_fd < 0) { /* Nothing to do. */
-+        return;
-+    }
-+
-+    if (strcmp(netdev_get_type(netdev_), "tap")) {
-+        poll_fd_wait(netdev->netdev_fd, POLLOUT);
-+    } else {
-+        /* TAP device always accepts packets. */
-+        poll_immediate_wake();
-+    }
-+}
-+
-+/*
-+ * Attempts to set 'netdev''s MAC address to 'mac'.  Returns 0 if successful,
-+ * otherwise a positive errno value.
-+ */
-+static int
-+netdev_bsd_set_etheraddr(struct netdev *netdev_,
-+                           const uint8_t mac[ETH_ADDR_LEN])
-+{
-+    struct netdev_dev_bsd *netdev_dev =
-+                                netdev_dev_bsd_cast(netdev_get_dev(netdev_));
-+    int error;
-+    
-+    if (!(netdev_dev->cache_valid & VALID_ETHERADDR)
-+        || !eth_addr_equals(netdev_dev->etheraddr, mac)) {
-+        error = set_etheraddr(netdev_get_name(netdev_), AF_LINK, ETH_ADDR_LEN,
-+                              mac);
-+        if (!error) {
-+            netdev_dev->cache_valid |= VALID_ETHERADDR;
-+            memcpy(netdev_dev->etheraddr, mac, ETH_ADDR_LEN);
-+        }
-+    } else {
-+        error = 0;
-+    }
-+    return error;
-+}
-+
-+/*
-+ * Returns a pointer to 'netdev''s MAC address.  The caller must not modify or
-+ * free the returned buffer.
-+ */
-+static int
-+netdev_bsd_get_etheraddr(const struct netdev *netdev_,
-+                           uint8_t mac[ETH_ADDR_LEN])
-+{
-+    struct netdev_dev_bsd *netdev_dev =
-+        netdev_dev_bsd_cast(netdev_get_dev(netdev_));
-+    
-+    if (!(netdev_dev->cache_valid & VALID_ETHERADDR)) {
-+        int error = get_etheraddr(netdev_get_name(netdev_), 
-+                                  netdev_dev->etheraddr);
-+        if (error) {
-+            return error;
-+        }
-+        netdev_dev->cache_valid |= VALID_ETHERADDR;
-+    }
-+    memcpy(mac, netdev_dev->etheraddr, ETH_ADDR_LEN);
-+    
-+    return 0;
-+}
-+
-+/*
-+ * Returns the maximum size of transmitted (and received) packets on 'netdev',
-+ * in bytes, not including the hardware header; thus, this is typically 1500
-+ * bytes for Ethernet devices.
-+ */
-+static int
-+netdev_bsd_get_mtu(const struct netdev *netdev_, int *mtup)
-+{
-+    struct netdev_dev_bsd *netdev_dev = 
-+        netdev_dev_bsd_cast(netdev_get_dev(netdev_));
-+    
-+    if (!(netdev_dev->cache_valid & VALID_MTU)) {
-+        struct ifreq ifr;
-+        int error;
-+
-+        error = netdev_bsd_do_ioctl(netdev_, &ifr, SIOCGIFMTU, "SIOCGIFMTU");
-+        if (error) {
-+            return error;
-+        }
-+        netdev_dev->mtu = ifr.ifr_mtu;
-+        netdev_dev->cache_valid |= VALID_MTU;
-+    }
-+
-+    *mtup = netdev_dev->mtu;
-+    return 0;
-+}
-+
-+static int
-+netdev_bsd_get_ifindex(const struct netdev *netdev)
-+{
-+    int ifindex, error;
-+    
-+    error = get_ifindex(netdev, &ifindex);
-+    return error ? -error : ifindex;
-+}
-+
-+static int
-+netdev_bsd_get_carrier(const struct netdev *netdev_, bool *carrier)
-+{
-+    struct netdev_dev_bsd *netdev_dev =
-+        netdev_dev_bsd_cast(netdev_get_dev(netdev_));
-+    
-+    if (!(netdev_dev->cache_valid & VALID_CARRIER)) {
-+        struct ifmediareq ifmr;
-+
-+        memset(&ifmr, 0, sizeof(ifmr));
-+        strncpy(ifmr.ifm_name, netdev_get_name(netdev_), sizeof ifmr.ifm_name);
-+
-+        if (ioctl(af_inet_sock, SIOCGIFMEDIA, &ifmr) == -1) {
-+            VLOG_DBG_RL(&rl, "%s: ioctl(SIOCGIFMEDIA) failed: %s",
-+                        netdev_get_name(netdev_), strerror(errno));
-+            return errno;
-+        }
-+
-+        netdev_dev->carrier = (ifmr.ifm_status & IFM_ACTIVE) == IFM_ACTIVE;
-+        netdev_dev->cache_valid |= VALID_CARRIER;
-+
-+        /* If the interface doesn't report whether the media is active,
-+         * just assume it is active. */
-+        if ((ifmr.ifm_status & IFM_AVALID) == 0) {
-+            netdev_dev->carrier = true;
-+        }
-+    }
-+    *carrier = netdev_dev->carrier;
-+    
-+    return 0;
-+}
-+
-+/* Retrieves current device stats for 'netdev'. */
-+static int
-+netdev_bsd_get_stats(const struct netdev *netdev_, struct netdev_stats *stats)
-+{
-+    int if_count, i;
-+    int mib[6];
-+    size_t len;
-+    struct ifmibdata ifmd;
-+
-+    COVERAGE_INC(netdev_get_stats);
-+
-+    mib[0] = CTL_NET;
-+    mib[1] = PF_LINK;
-+    mib[2] = NETLINK_GENERIC;
-+    mib[3] = IFMIB_SYSTEM;
-+    mib[4] = IFMIB_IFCOUNT;
-+
-+    len = sizeof(if_count);
-+
-+    if (sysctl(mib, 5, &if_count, &len, (void *)0, 0) == -1) {
-+        VLOG_DBG_RL(&rl, "%s: sysctl failed: %s",
-+                    netdev_get_name(netdev_), strerror(errno));
-+        return errno;
-+    }
-+    
-+    mib[5] = IFDATA_GENERAL;
-+    mib[3] = IFMIB_IFDATA;
-+    len = sizeof(ifmd);
-+    for (i = 1; i <= if_count; i++) {
-+        mib[4] = i; //row
-+        if (sysctl(mib, 6, &ifmd, &len, (void *)0, 0) == -1) {
-+            VLOG_DBG_RL(&rl, "%s: sysctl failed: %s",
-+                        netdev_get_name(netdev_), strerror(errno));
-+            return errno;
-+        } else if (!strcmp(ifmd.ifmd_name, netdev_get_name(netdev_))) {
-+            stats->rx_packets = ifmd.ifmd_data.ifi_ipackets;        
-+            stats->tx_packets = ifmd.ifmd_data.ifi_opackets;
-+            stats->rx_bytes = ifmd.ifmd_data.ifi_ibytes;          
-+            stats->tx_bytes = ifmd.ifmd_data.ifi_obytes;          
-+            stats->rx_errors = ifmd.ifmd_data.ifi_ierrors;         
-+            stats->tx_errors = ifmd.ifmd_data.ifi_oerrors;       
-+            stats->rx_dropped = ifmd.ifmd_data.ifi_iqdrops;        
-+            stats->tx_dropped = 0;        
-+            stats->multicast = ifmd.ifmd_data.ifi_imcasts;         
-+            stats->collisions = ifmd.ifmd_data.ifi_collisions;
-+
-+            stats->rx_length_errors = 0;
-+            stats->rx_over_errors = 0;   
-+            stats->rx_crc_errors = 0;  
-+            stats->rx_frame_errors = 0;
-+            stats->rx_fifo_errors = 0;    
-+            stats->rx_missed_errors = 0;  
-+
-+            stats->tx_aborted_errors = 0;
-+            stats->tx_carrier_errors = 0;
-+            stats->tx_fifo_errors = 0;
-+            stats->tx_heartbeat_errors = 0;
-+            stats->tx_window_errors = 0;
-+            break;
-+        }
-+    }
-+
-+    return 0;
-+}
-+
-+static uint32_t
-+netdev_bsd_parse_media(int media)
-+{
-+    uint32_t supported = 0;
-+    bool half_duplex = media & IFM_HDX ? true : false;
-+
-+    switch (IFM_SUBTYPE(media)) {
-+    case IFM_10_2:
-+    case IFM_10_5:
-+    case IFM_10_STP:
-+    case IFM_10_T:
-+        supported |= half_duplex ? OFPPF_10MB_HD : OFPPF_10MB_FD;
-+        supported |= OFPPF_COPPER;
-+        break;
-+
-+    case IFM_10_FL:
-+        supported |= half_duplex ? OFPPF_10MB_HD : OFPPF_10MB_FD;
-+        supported |= OFPPF_FIBER;
-+        break;
-+
-+    case IFM_100_T2:
-+    case IFM_100_T4:
-+    case IFM_100_TX:
-+    case IFM_100_VG:
-+        supported |= half_duplex ? OFPPF_100MB_HD : OFPPF_100MB_FD;
-+        supported |= OFPPF_COPPER;
-+        break;
-+
-+    case IFM_100_FX:
-+        supported |= half_duplex ? OFPPF_100MB_HD : OFPPF_100MB_FD;
-+        supported |= OFPPF_FIBER;
-+        break;
-+
-+    case IFM_1000_CX:
-+    case IFM_1000_T:
-+        supported |= half_duplex ? OFPPF_1GB_HD : OFPPF_1GB_FD;
-+        supported |= OFPPF_COPPER;
-+        break;
-+
-+    case IFM_1000_LX:
-+    case IFM_1000_SX:
-+        supported |= half_duplex ? OFPPF_1GB_HD : OFPPF_1GB_FD;
-+        supported |= OFPPF_FIBER;
-+        break;
-+
-+    case IFM_10G_CX4:
-+        supported |= OFPPF_10GB_FD;
-+        supported |= OFPPF_COPPER;
-+        break;
-+
-+    case IFM_10G_LR:
-+    case IFM_10G_SR:
-+        supported |= OFPPF_10GB_FD;
-+        supported |= OFPPF_FIBER;
-+        break;
-+
-+    default:
-+        return 0;
-+    }
-+
-+    if (IFM_SUBTYPE(media) == IFM_AUTO) {
-+        supported |= OFPPF_AUTONEG;
-+    }
-+    /*
-+    if (media & IFM_ETH_FMASK) {
-+        supported |= OFPPF_PAUSE;
-+    }
-+    */
-+
-+    return supported;
-+}
-+
-+/* 
-+ * Stores the features supported by 'netdev' into each of '*current',
-+ * '*advertised', '*supported', and '*peer' that are non-null.  Each value is a
-+ * bitmap of "enum ofp_port_features" bits, in host byte order.  Returns 0 if
-+ * successful, otherwise a positive errno value.  On failure, all of the
-+ * passed-in values are set to 0.
-+ */
-+static int
-+netdev_bsd_get_features(struct netdev *netdev,
-+                          uint32_t *current, uint32_t *advertised,
-+                          uint32_t *supported, uint32_t *peer)
-+{
-+    struct ifmediareq ifmr;
-+    int *media_list;
-+    int i;
-+    int error;
-+
-+
-+    /* XXX Look into SIOCGIFCAP instead of SIOCGIFMEDIA */
-+
-+    memset(&ifmr, 0, sizeof(ifmr));
-+    strncpy(ifmr.ifm_name, netdev_get_name(netdev), sizeof ifmr.ifm_name);
-+
-+    /* We make two SIOCGIFMEDIA ioctl calls.  The first to determine the
-+     * number of supported modes, and a second with a buffer to retrieve
-+     * them. */
-+    if (ioctl(af_inet_sock, SIOCGIFMEDIA, &ifmr) == -1) {
-+        VLOG_DBG_RL(&rl, "%s: ioctl(SIOCGIFMEDIA) failed: %s",
-+                    netdev_get_name(netdev), strerror(errno));
-+        return errno;
-+    }
-+
-+    media_list = xcalloc(ifmr.ifm_count, sizeof(int));
-+    ifmr.ifm_ulist = media_list;
-+
-+    if (!IFM_TYPE(ifmr.ifm_current) & IFM_ETHER) {
-+        VLOG_DBG_RL(&rl, "%s: doesn't appear to be ethernet",
-+                    netdev_get_name(netdev));
-+        error = EINVAL;
-+        goto cleanup;
-+    }
-+
-+    if (ioctl(af_inet_sock, SIOCGIFMEDIA, &ifmr) == -1) {
-+        VLOG_DBG_RL(&rl, "%s: ioctl(SIOCGIFMEDIA) failed: %s",
-+                    netdev_get_name(netdev), strerror(errno));
-+        error = errno;
-+        goto cleanup;
-+    }
-+
-+    /* Current settings. */
-+    *current = netdev_bsd_parse_media(ifmr.ifm_active);
-+
-+    /* Advertised features. */
-+    *advertised = netdev_bsd_parse_media(ifmr.ifm_current);
-+
-+    /* Supported features. */
-+    *supported = 0;
-+    for (i = 0; i < ifmr.ifm_count; i++) {
-+        *supported |= netdev_bsd_parse_media(ifmr.ifm_ulist[i]);
-+    }
-+
-+    /* Peer advertisements. */
-+    *peer = 0;                  /* XXX */
-+
-+    error = 0;
-+cleanup:
-+    free(media_list);
-+    return error;
-+}
-+
-+/*
-+ * If 'netdev' has an assigned IPv4 address, sets '*in4' to that address (if
-+ * 'in4' is non-null) and returns true.  Otherwise, returns false.
-+ */
-+static int
-+netdev_bsd_get_in4(const struct netdev *netdev_, struct in_addr *in4, 
-+                   struct in_addr *netmask)
-+{
-+    struct netdev_dev_bsd *netdev_dev =
-+        netdev_dev_bsd_cast(netdev_get_dev(netdev_));
-+
-+    if (!(netdev_dev->cache_valid & VALID_IN4)) {
-+        const struct sockaddr_in *sin;
-+        struct ifreq ifr;
-+        int error;
-+
-+        ifr.ifr_addr.sa_family = AF_INET;
-+        error = netdev_bsd_do_ioctl(netdev_, &ifr,
-+                                      SIOCGIFADDR, "SIOCGIFADDR");
-+        if (error) {
-+            return error;
-+        }
-+
-+        sin = (struct sockaddr_in *) &ifr.ifr_addr;
-+        netdev_dev->in4 = sin->sin_addr;
-+        netdev_dev->cache_valid |= VALID_IN4;
-+        error = netdev_bsd_do_ioctl(netdev_, &ifr,
-+                                      SIOCGIFNETMASK, "SIOCGIFNETMASK");
-+        if (error) {
-+            return error;
-+        }
-+        *netmask = ((struct sockaddr_in*)&ifr.ifr_addr)->sin_addr;
-+    }
-+    *in4 = netdev_dev->in4;
-+
-+    return in4->s_addr == INADDR_ANY ? EADDRNOTAVAIL : 0;
-+}
-+
-+/*
-+ * Assigns 'addr' as 'netdev''s IPv4 address and 'mask' as its netmask.  If
-+ * 'addr' is INADDR_ANY, 'netdev''s IPv4 address is cleared.  Returns a
-+ * positive errno value.
-+ */
-+static int
-+netdev_bsd_set_in4(struct netdev *netdev_, struct in_addr addr,
-+                     struct in_addr mask)
-+{
-+    struct netdev_dev_bsd *netdev_dev =
-+        netdev_dev_bsd_cast(netdev_get_dev(netdev_));
-+    int error;
-+    
-+    error = do_set_addr(netdev_, SIOCSIFADDR, "SIOCSIFADDR", addr);
-+    if (!error) {
-+        netdev_dev->cache_valid |= VALID_IN4;
-+        netdev_dev->in4 = addr;
-+        if (addr.s_addr != INADDR_ANY) {
-+            error = do_set_addr(netdev_, SIOCSIFNETMASK,
-+                                "SIOCSIFNETMASK", mask);
-+        }
-+    }
-+    return error;
-+}
-+
-+static int
-+netdev_bsd_get_in6(const struct netdev *netdev_, struct in6_addr *in6)
-+{
-+    struct netdev_dev_bsd *netdev_dev =
-+                                netdev_dev_bsd_cast(netdev_get_dev(netdev_));
-+    if (!(netdev_dev->cache_valid & VALID_IN6)) {
-+        struct ifaddrs *ifa, *head;
-+        struct sockaddr_in6 *sin6;
-+        const char *netdev_name = netdev_get_name(netdev_);
-+
-+        if (getifaddrs(&head) != 0) {
-+            VLOG_ERR("getifaddrs on %s device failed: %s", netdev_name, 
-+                    strerror(errno));
-+            return errno;
-+        }
-+
-+        for (ifa = head; ifa; ifa = ifa->ifa_next) {
-+            if (ifa->ifa_addr->sa_family == AF_INET6 && 
-+                    !strcmp(ifa->ifa_name, netdev_name)) {
-+                sin6 = (struct sockaddr_in6 *)ifa->ifa_addr;
-+                if (sin6) {
-+                    memcpy(&netdev_dev->in6, &sin6->sin6_addr, sin6->sin6_len);
-+                    netdev_dev->cache_valid |= VALID_IN6;
-+                    *in6 = netdev_dev->in6;
-+                    freeifaddrs(head);
-+                    return 0;
-+                } 
-+            }
-+        }
-+        return EADDRNOTAVAIL;
-+    }
-+    *in6 = netdev_dev->in6;
-+    return 0;
-+}
-+
-+static void
-+make_in4_sockaddr(struct sockaddr *sa, struct in_addr addr)
-+{
-+    struct sockaddr_in sin;
-+    memset(&sin, 0, sizeof sin);
-+    sin.sin_family = AF_INET;
-+    sin.sin_addr = addr;
-+    sin.sin_port = 0;
-+
-+    memset(sa, 0, sizeof *sa);
-+    memcpy(sa, &sin, sizeof sin);
-+}
-+
-+static int
-+do_set_addr(struct netdev *netdev,
-+            int ioctl_nr, const char *ioctl_name, struct in_addr addr)
-+{
-+    struct ifreq ifr;
-+    make_in4_sockaddr(&ifr.ifr_addr, addr);
-+    return netdev_bsd_do_ioctl(netdev, &ifr, ioctl_nr, ioctl_name);
-+}
-+
-+static int
-+nd_to_iff_flags(enum netdev_flags nd)
-+{
-+    int iff = 0;
-+    if (nd & NETDEV_UP) {
-+        iff |= IFF_UP;
-+    }
-+    if (nd & NETDEV_PROMISC) {
-+        iff |= IFF_PROMISC;
-+        iff |= IFF_PPROMISC;
-+    }
-+    return iff;
-+}
-+
-+static int
-+iff_to_nd_flags(int iff)
-+{
-+    enum netdev_flags nd = 0;
-+    if (iff & IFF_UP) {
-+        nd |= NETDEV_UP;
-+    }
-+    if (iff & IFF_PROMISC) { 
-+        nd |= NETDEV_PROMISC;
-+    }
-+    return nd;
-+}
-+
-+static int
-+netdev_bsd_update_flags(struct netdev *netdev, enum netdev_flags off,
-+                          enum netdev_flags on, enum netdev_flags *old_flagsp)
-+{
-+    int old_flags, new_flags;
-+    int error;
-+
-+    error = get_flags(netdev, &old_flags);
-+    if (!error) {
-+        *old_flagsp = iff_to_nd_flags(old_flags);
-+        new_flags = (old_flags & ~nd_to_iff_flags(off)) | nd_to_iff_flags(on);
-+        if (new_flags != old_flags) {
-+            error = set_flags(netdev, new_flags);
-+        }
-+    }
-+    return error;
-+}
-+
-+/* Call callbacks for all the list of notifiers */
-+static void
-+poll_notify(struct list *dev_notifiers)
-+{
-+    struct netdev_bsd_notifier *notifier;
-+    LIST_FOR_EACH (notifier, struct netdev_bsd_notifier, node, dev_notifiers) {
-+        struct netdev_notifier *n = &notifier->notifier;
-+        n->cb(n);
-+    }
-+}
-+
-+/*
-+ * The callback registered for 'netdev_bsd_poll_notifier'.
-+ *
-+ * If 'change' is set it retrieves the element in the 'all_bsd_notifiers'
-+ * relative to the network device which has been subject to the change, and
-+ * then call the callbacks for all the notifiers registered for that network
-+ * device.
-+ */
-+static void
-+netdev_bsd_poll_cb(const struct rtbsd_change *change, void *aux)
-+{
-+    struct shash *arg = aux;
-+    
-+    if (change) {
-+        struct list *dev_notifiers = shash_find_data(arg, change->if_name);
-+        if (dev_notifiers) {
-+            poll_notify(dev_notifiers);
-+        }
-+    } else {
-+        struct shash_node *node;
-+        SHASH_FOR_EACH (node, arg) {
-+            poll_notify(node->data);
-+        }
-+    }
-+}
-+
-+/*
-+ * Arranges for 'cb' to be called whenever one of the attributes of
-+ * 'netdev' changes and sets '*notifierp' to a newly created
-+ * netdev_notifier that represents this arrangement.
-+ *
-+ * If the 'all_bsd_notifiers' is empty, it registers the
-+ * 'netdev_bsd_poll_notifier'. Than it creates a new notifier and inserts it
-+ * into the list belonging to the node in the 'all_bsd_notifiers' relative to
-+ * the network device. In case it is the first notifier registered for this
-+ * network device, it first create the node into the 'all_bsd_notifiers' and
-+ * then appends the notifier to its list.
-+ */
-+static int
-+netdev_bsd_poll_add(struct netdev *netdev,
-+                      void (*cb)(struct netdev_notifier *), void *aux,
-+                      struct netdev_notifier **notifierp)
-+{
-+    const char *netdev_name = netdev_get_name(netdev);
-+    struct netdev_bsd_notifier *notifier;
-+    struct list *list;
-+
-+    if (shash_is_empty(&all_bsd_notifiers)) {
-+        /* This is the first time that this function is called so the main
-+         * notifier needs to be registered */
-+        int error = rtbsd_notifier_register(&netdev_bsd_poll_notifier,
-+               netdev_bsd_poll_cb, &all_bsd_notifiers);
-+        if (error) {
-+            return error;
-+        }
-+    }
-+    list = shash_find_data(&all_bsd_notifiers, netdev_name);
-+    if (!list) {
-+        list = xmalloc(sizeof *list);
-+        list_init(list);
-+        shash_add(&all_bsd_notifiers, netdev_name, list);
-+    }
-+
-+    notifier = xmalloc(sizeof *notifier);
-+    netdev_notifier_init(&notifier->notifier, netdev, cb, aux);
-+    list_push_back(list, &notifier->node);
-+    *notifierp = &notifier->notifier;
-+    return 0;
-+}
-+
-+static void
-+netdev_bsd_poll_remove(struct netdev_notifier *notifier_)
-+{
-+    struct netdev_bsd_notifier *notifier =
-+        CONTAINER_OF(notifier_, struct netdev_bsd_notifier, notifier);
-+    struct list *list;
-+
-+    /* Remove 'notifier' from its list. */
-+    list = list_remove(&notifier->node);
-+    if (list_is_empty(list)) {
-+        /* The list is now empty.  Remove it from the hash and free it. */
-+        const char *netdev_name = netdev_get_name(notifier->notifier.netdev);
-+        shash_delete(&all_bsd_notifiers,
-+                     shash_find(&all_bsd_notifiers, netdev_name));
-+        free(list);
-+    }
-+    free(notifier);
-+
-+    /* If that was the last notifier, unregister. */
-+    if (shash_is_empty(&all_bsd_notifiers)) {
-+        rtbsd_notifier_unregister(&netdev_bsd_poll_notifier);
-+    }
-+}
-+
-+const struct netdev_class netdev_bsd_class = {
-+    "system",
-+
-+    netdev_bsd_init,
-+    netdev_bsd_run,
-+    netdev_bsd_wait,
-+    netdev_bsd_create_system,
-+    netdev_bsd_destroy,
-+    NULL,  /* reconfigure */
-+    netdev_bsd_open_system,
-+    netdev_bsd_close,
-+
-+    netdev_bsd_enumerate,
-+
-+    netdev_bsd_recv,
-+    netdev_bsd_recv_wait,
-+    netdev_bsd_drain,
-+
-+    netdev_bsd_send,
-+    netdev_bsd_send_wait,
-+
-+    netdev_bsd_set_etheraddr,
-+    netdev_bsd_get_etheraddr,
-+    netdev_bsd_get_mtu,
-+    netdev_bsd_get_ifindex,
-+    netdev_bsd_get_carrier,
-+    netdev_bsd_get_stats,
-+    NULL, /* set_stats */
-+
-+    netdev_bsd_get_features,
-+    NULL, /* set_advertisement */
-+    NULL, /* get_vlan_vid */  //XXX SIOCGETVLAN  
-+    NULL, /* set_policing */
-+    NULL, /* get_qos_type */
-+    NULL, /* get_qos_capabilities */
-+    NULL, /* get_qos */
-+    NULL, /* set_qos */
-+    NULL, /* get_queue */
-+    NULL, /* set_queue */
-+    NULL, /* delete_queue */
-+    NULL, /* get_queue_stats */
-+    NULL, /* dump_queue */
-+    NULL, /* dump_queue_stats */
-+
-+    netdev_bsd_get_in4,
-+    netdev_bsd_set_in4,
-+    netdev_bsd_get_in6,
-+    NULL, /* add_router */
-+    NULL, /* get_next_hop */
-+    NULL, /* arp_lookup */
-+
-+    netdev_bsd_update_flags,
-+
-+    netdev_bsd_poll_add,
-+    netdev_bsd_poll_remove,
-+};
-+
-+const struct netdev_class netdev_tap_class = {
-+    "tap",  
-+
-+    netdev_bsd_init,
-+    netdev_bsd_run,
-+    netdev_bsd_wait,
-+    netdev_bsd_create_tap,
-+    netdev_bsd_destroy,
-+    NULL,  /* reconfigure */
-+    netdev_bsd_open_system,
-+    netdev_bsd_close,
-+
-+    netdev_bsd_enumerate,
-+
-+    netdev_bsd_recv,
-+    netdev_bsd_recv_wait,
-+    netdev_bsd_drain,
-+
-+    netdev_bsd_send,
-+    netdev_bsd_send_wait,
-+
-+    netdev_bsd_set_etheraddr,
-+    netdev_bsd_get_etheraddr,
-+    netdev_bsd_get_mtu,
-+    netdev_bsd_get_ifindex,
-+    netdev_bsd_get_carrier,
-+    netdev_bsd_get_stats,
-+    NULL, /* set_stats */
-+
-+    netdev_bsd_get_features,
-+    NULL, /* set_advertisement */
-+    NULL, /* get_vlan_vid */
-+    NULL, /* set_policing */
-+    NULL, /* get_qos_type */
-+    NULL, /* get_qos_capabilities */
-+    NULL, /* get_qos */
-+    NULL, /* set_qos */
-+    NULL, /* get_queue */
-+    NULL, /* set_queue */
-+    NULL, /* delete_queue */
-+    NULL, /* get_queue_stats */
-+    NULL, /* dump_queue */
-+    NULL, /* dump_queue_stats */
-+
-+    netdev_bsd_get_in4,
-+    netdev_bsd_set_in4,
-+    netdev_bsd_get_in6,
-+    NULL, /* add_router */
-+    NULL, /* get_next_hop */
-+    NULL, /* arp_lookup */
-+
-+    netdev_bsd_update_flags,
-+
-+    netdev_bsd_poll_add,
-+    netdev_bsd_poll_remove,
-+}; 
-+
-+
-+static void 
-+destroy_tap(int fd, const char *name)
-+{
-+    struct ifreq ifr;
-+
-+    close(fd);
-+    strcpy(ifr.ifr_name, name);
-+    /* XXX What to do if this call fails? */
-+    ioctl(af_inet_sock, SIOCIFDESTROY, &ifr);
-+}
-+
-+static int
-+get_flags(const struct netdev *netdev, int *flags)
-+{
-+    struct ifreq ifr;
-+    int error;
-+    
-+    error = netdev_bsd_do_ioctl(netdev, &ifr, SIOCGIFFLAGS, "SIOCGIFFLAGS");
-+
-+    *flags = 0xFFFF0000 & (ifr.ifr_flagshigh << 16);
-+    *flags |= 0x0000FFFF & ifr.ifr_flags;
-+
-+    return error;
-+}
-+
-+static int
-+set_flags(struct netdev *netdev, int flags)
-+{
-+    struct ifreq ifr;
-+
-+    ifr.ifr_flags = 0x0000FFFF & flags;
-+    ifr.ifr_flagshigh = (0xFFFF0000 & flags) >> 16;
-+
-+    return netdev_bsd_do_ioctl(netdev, &ifr, SIOCSIFFLAGS, "SIOCSIFFLAGS");
-+}
-+
-+static int
-+get_ifindex(const struct netdev *netdev_, int *ifindexp)
-+{
-+    struct netdev_dev_bsd *netdev_dev =
-+                                netdev_dev_bsd_cast(netdev_get_dev(netdev_));
-+    *ifindexp = 0;
-+    if (!(netdev_dev->cache_valid & VALID_IFINDEX)) {
-+        int ifindex = if_nametoindex(netdev_get_name(netdev_));
-+        if (ifindex <= 0) {
-+            return errno;
-+        }
-+        netdev_dev->cache_valid |= VALID_IFINDEX;
-+        netdev_dev->ifindex = ifindex;
-+    }
-+    *ifindexp = netdev_dev->ifindex;
-+    return 0;
-+}
-+
-+static int
-+get_etheraddr(const char *netdev_name, uint8_t ea[ETH_ADDR_LEN])
-+{
-+    struct ifaddrs *head;
-+    struct ifaddrs *ifa;
-+    struct sockaddr_dl *sdl;
-+
-+    if (getifaddrs(&head) != 0) {
-+        VLOG_ERR("getifaddrs on %s device failed: %s", netdev_name, 
-+                strerror(errno));
-+        return errno;
-+    }
-+
-+    for (ifa = head; ifa; ifa = ifa->ifa_next) {
-+        if (ifa->ifa_addr->sa_family == AF_LINK) {
-+            if (!strcmp(ifa->ifa_name, netdev_name)) {
-+                sdl = (struct sockaddr_dl *)ifa->ifa_addr;
-+                if (sdl) {
-+                    memcpy(ea, LLADDR(sdl), sdl->sdl_alen);
-+                    freeifaddrs(head);
-+                    return 0;
-+                }
-+            }
-+        }
-+    }
-+
-+    VLOG_ERR("could not find ethernet address for %s device", netdev_name);
-+    freeifaddrs(head);
-+    return ENODEV;
-+}
-+
-+static int
-+set_etheraddr(const char *netdev_name, int hwaddr_family,
-+              int hwaddr_len, const uint8_t mac[ETH_ADDR_LEN])
-+{
-+    struct ifreq ifr;
-+    
-+    memset(&ifr, 0, sizeof ifr);
-+    strncpy(ifr.ifr_name, netdev_name, sizeof ifr.ifr_name);
-+    ifr.ifr_addr.sa_family = hwaddr_family;
-+    ifr.ifr_addr.sa_len = hwaddr_len;
-+    memcpy(ifr.ifr_addr.sa_data, mac, hwaddr_len);
-+    COVERAGE_INC(netdev_set_hwaddr);
-+    if (ioctl(af_inet_sock, SIOCSIFLLADDR, &ifr) < 0) {
-+        VLOG_ERR("ioctl(SIOCSIFLLADDR) on %s device failed: %s",
-+                 netdev_name, strerror(errno));
-+        return errno;
-+    }
-+    return 0;
-+}
-+
-+static int
-+netdev_bsd_do_ioctl(const struct netdev *netdev, struct ifreq *ifr,
-+                    unsigned long cmd, const char *cmd_name)
-+{
-+    strncpy(ifr->ifr_name, netdev_get_name(netdev), sizeof ifr->ifr_name);
-+    if (ioctl(af_inet_sock, cmd, ifr) == -1) {
-+        VLOG_DBG_RL(&rl, "%s: ioctl(%s) failed: %s",
-+                    netdev_get_name(netdev), cmd_name, strerror(errno));
-+        return errno;
-+    }
-+    return 0;
-+}
diff --git a/net/openvswitch/files/patch-porting.diff b/net/openvswitch/files/patch-porting.diff
deleted file mode 100644
index 596b147eabe5..000000000000
--- a/net/openvswitch/files/patch-porting.diff
+++ /dev/null
@@ -1,346 +0,0 @@
-diff -NBubrw -x '*.svn*' lib/automake.mk lib/automake.mk
---- lib/automake.mk	2010-09-10 23:36:43.000000000 +0200
-+++ lib/automake.mk	2011-10-07 11:18:52.000000000 +0200
-@@ -187,6 +187,13 @@
- 	lib/rtnetlink.h
- endif
- 
-+if HAVE_IF_DL
-+lib_libopenvswitch_a_SOURCES += \
-+	lib/netdev-bsd.c \
-+	lib/rtbsd.c \
-+	lib/rtbsd.h
-+endif
-+
- if HAVE_OPENSSL
- lib_libopenvswitch_a_SOURCES += lib/stream-ssl.c
- nodist_lib_libopenvswitch_a_SOURCES += lib/dhparams.c
-diff -NBubrw -x '*.svn*' lib/netdev.c lib/netdev.c
---- lib/netdev.c	2010-09-10 23:36:43.000000000 +0200
-+++ lib/netdev.c	2011-10-25 16:11:14.416612232 +0200
-@@ -49,6 +49,10 @@
-     &netdev_gre_class,
-     &netdev_capwap_class,
- #endif
-+#ifdef __FreeBSD__
-+    &netdev_bsd_class,
-+    &netdev_tap_class,
-+#endif
- };
- 
- static struct shash netdev_classes = SHASH_INITIALIZER(&netdev_classes);
-diff -NBubrw -x '*.svn*' lib/netdev-provider.h lib/netdev-provider.h
---- lib/netdev-provider.h	2010-09-10 23:36:43.000000000 +0200
-+++ lib/netdev-provider.h	2011-10-25 16:03:39.446629209 +0200
-@@ -551,6 +551,9 @@
- extern const struct netdev_class netdev_patch_class;
- extern const struct netdev_class netdev_gre_class;
- extern const struct netdev_class netdev_capwap_class;
-+#ifdef __FreeBSD__
-+extern const struct netdev_class netdev_bsd_class;
-+#endif
- 
- #ifdef  __cplusplus
- }
-diff -NBubrw -x '*.svn*' lib/rtbsd.c lib/rtbsd.c
---- lib/rtbsd.c	1970-01-01 01:00:00.000000000 +0100
-+++ lib/rtbsd.c	2011-10-07 11:18:52.000000000 +0200
-@@ -0,0 +1,168 @@
-+/*
-+ * Copyright (c) 2011 Gaetano Catalli. 
-+ * 
-+ * 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 ``AS IS'' WITHOUT ANY WARRANTIES OF ANY KIND.
-+ */
-+
-+#include <config.h>
-+
-+#include <unistd.h>
-+#include <errno.h>
-+#include <sys/socket.h>
-+#include <net/if.h>
-+#include <net/route.h>
-+#include <poll.h>
-+
-+#include "coverage.h"
-+#include "socket-util.h"
-+#include "poll-loop.h"
-+#include "vlog.h"
-+#include "rtbsd.h"
-+
-+VLOG_DEFINE_THIS_MODULE(rtbsd)
-+
-+/* PF_ROUTE socket. */
-+static int notify_sock = -1;
-+
-+/* All registered notifiers. */
-+static struct list all_notifiers = LIST_INITIALIZER(&all_notifiers);
-+
-+static void rtbsd_report_change(const struct if_msghdr *);
-+static void rtbsd_report_notify_error(void);
-+
-+/* Registers 'cb' to be called with auxiliary data 'aux' with network device
-+ * change notifications.  The notifier is stored in 'notifier', which the
-+ * caller must not modify or free.
-+ *
-+ * Returns 0 if successful, otherwise a positive errno value. */
-+int
-+rtbsd_notifier_register(struct rtbsd_notifier *notifier,
-+                            rtbsd_notify_func *cb, void *aux)
-+{
-+    if (notify_sock < 0) {
-+        int error;
-+        notify_sock = socket(PF_ROUTE, SOCK_RAW, 0);
-+        if (notify_sock < 0) {
-+            VLOG_WARN("could not create PF_ROUTE socket: %s",
-+                      strerror(errno));
-+            return errno;
-+        }
-+        error = set_nonblocking(notify_sock);
-+        if (error) {
-+            VLOG_WARN("error set_nonblocking PF_ROUTE socket: %s",
-+                    strerror(error));
-+            return error;
-+        }
-+    } else {
-+        /* Catch up on notification work so that the new notifier won't
-+         * receive any stale notifications. XXX*/
-+        rtbsd_notifier_run();
-+    }
-+
-+    list_push_back(&all_notifiers, &notifier->node);
-+    notifier->cb = cb;
-+    notifier->aux = aux;
-+    return 0;
-+}
-+
-+/* Cancels notification on 'notifier', which must have previously been
-+ * registered with rtbsd_notifier_register(). */
-+void
-+rtbsd_notifier_unregister(struct rtbsd_notifier *notifier)
-+{
-+    list_remove(&notifier->node);
-+    if (list_is_empty(&all_notifiers)) {
-+        close(notify_sock);
-+        notify_sock = -1;
-+    }
-+}
-+
-+/* Calls all of the registered notifiers, passing along any as-yet-unreported
-+ * netdev change events. */
-+void
-+rtbsd_notifier_run(void)
-+{
-+    static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
-+    struct if_msghdr msg;
-+    if (notify_sock < 0) {
-+        return;
-+    }
-+
-+    for (;;) {
-+        int retval;
-+
-+        msg.ifm_type = RTM_IFINFO;
-+        msg.ifm_version = RTM_VERSION; //XXX check if necessary
-+        
-+        /* read from PF_ROUTE socket */
-+        retval = read(notify_sock, (char *)&msg, sizeof(msg));
-+        if (retval >= 0) {
-+            /* received packet from PF_ROUTE socket 
-+             * XXX check for bad packets */
-+            if (msg.ifm_type == RTM_IFINFO) {
-+                rtbsd_report_change(&msg);
-+            }
-+        } else if (errno == EAGAIN) {
-+            return;
-+        } else {
-+            if (errno == ENOBUFS) {
-+                VLOG_WARN_RL(&rl, "PF_ROUTE receive buffer overflowed");
-+            } else {
-+                VLOG_WARN_RL(&rl, "error reading PF_ROUTE socket: %s",
-+                             strerror(errno));
-+            }
-+            rtbsd_report_notify_error();
-+        }
-+    }
-+}
-+
-+/* Causes poll_block() to wake up when network device change notifications are
-+ * ready. */
-+void
-+rtbsd_notifier_wait(void)
-+{
-+    if (notify_sock >= 0) {
-+        poll_fd_wait(notify_sock, POLLIN);
-+    }
-+}
-+
-+static void
-+rtbsd_report_change(const struct if_msghdr *msg)
-+{
-+    struct rtbsd_notifier *notifier;
-+    struct rtbsd_change change;
-+    
-+    /*COVERAGE_INC(rtbsd_changed);*/  /* XXX update coverage-counters.c */
-+
-+    change.msg_type = msg->ifm_type; //XXX
-+    change.if_index = msg->ifm_index;
-+    if_indextoname(msg->ifm_index, change.if_name);
-+    change.master_ifindex = 0; //XXX
-+
-+    LIST_FOR_EACH (notifier, struct rtbsd_notifier, node,
-+                   &all_notifiers) {
-+        notifier->cb(&change, notifier->aux);
-+    }
-+}
-+
-+/* If an error occurs the notifiers' callbacks are called with NULL changes */
-+static void
-+rtbsd_report_notify_error(void)
-+{
-+    struct rtbsd_notifier *notifier;
-+
-+    LIST_FOR_EACH (notifier, struct rtbsd_notifier, node,
-+                   &all_notifiers) {
-+        notifier->cb(NULL, notifier->aux);
-+    }
-+}
-diff -NBubrw -x '*.svn*' lib/rtbsd.h lib/rtbsd.h
---- lib/rtbsd.h	1970-01-01 01:00:00.000000000 +0100
-+++ lib/rtbsd.h	2011-10-07 11:18:52.000000000 +0200
-@@ -0,0 +1,58 @@
-+/*
-+ * Copyright (c) 2011 Gaetano Catalli. 
-+ * 
-+ * 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 ``AS IS'' WITHOUT ANY WARRANTIES OF ANY KIND.
-+ */
-+
-+#ifndef RTBSD_H
-+#define RTBSD_H 1
-+
-+#include "list.h"
-+
-+/*
-+ * A digested version of a message received from a PF_ROUTE socket which
-+ * indicates that a network device has been created or destroyed or changed. 
-+ */
-+struct rtbsd_change {
-+    /* Copied from struct if_msghdr. */
-+    int msg_type;             /* e.g. XXX. */
-+
-+    /* Copied from struct if_msghdr. */
-+    int if_index;              /* Index of network device. */
-+
-+    char if_name[IF_NAMESIZE];         /* Name of network device. */
-+    int master_ifindex;         /* Ifindex of datapath master (0 if none). */
-+};
-+
-+/*
-+ * Function called to report that a netdev has changed.  'change' describes the
-+ * specific change.  It may be null if the buffer of change information
-+ * overflowed, in which case the function must assume that every device may
-+ * have changed.  'aux' is as specified in the call to
-+ * rtbsd_notifier_register(). 
-+ */
-+typedef void rtbsd_notify_func(const struct rtbsd_change *, void *aux);
-+
-+struct rtbsd_notifier {
-+    struct list node;
-+    rtbsd_notify_func *cb;
-+    void *aux;
-+};
-+
-+int rtbsd_notifier_register(struct rtbsd_notifier *,
-+                                rtbsd_notify_func *, void *aux);
-+void rtbsd_notifier_unregister(struct rtbsd_notifier *);
-+void rtbsd_notifier_run(void);
-+void rtbsd_notifier_wait(void);
-+
-+#endif /* rtbsd.h */
-diff -NBubrw -x '*.svn*' lib/socket-util.c lib/socket-util.c
---- lib/socket-util.c	2010-09-10 23:36:43.000000000 +0200
-+++ lib/socket-util.c	2011-10-07 11:18:52.000000000 +0200
-@@ -259,7 +259,10 @@
-         }
-         fatal_signal_add_file_to_unlink(bind_path);
-         if (bind(fd, (struct sockaddr*) &un, un_len)
--            || fchmod(fd, S_IRWXU)) {
-+#ifndef __FreeBSD__        
-+                || fchmod(fd, S_IRWXU) 
-+#endif
-+           ) {
-             goto error;
-         }
-     }
-diff -NBubrw -x '*.svn*' lib/stream-ssl.c lib/stream-ssl.c
---- lib/stream-ssl.c	2010-09-10 23:36:43.000000000 +0200
-+++ lib/stream-ssl.c	2011-10-07 11:18:52.000000000 +0200
-@@ -22,6 +22,8 @@
- #include <errno.h>
- #include <inttypes.h>
- #include <string.h>
-+#include <sys/types.h>
-+#include <sys/socket.h>
- #include <netinet/tcp.h>
- #include <openssl/err.h>
- #include <openssl/ssl.h>
-diff -NBubrw -x '*.svn*' utilities/ovs-ofctl.c utilities/ovs-ofctl.c
---- utilities/ovs-ofctl.c	2010-09-10 23:36:43.000000000 +0200
-+++ utilities/ovs-ofctl.c	2011-10-07 11:18:59.000000000 +0200
-@@ -18,6 +18,7 @@
- #include <errno.h>
- #include <getopt.h>
- #include <inttypes.h>
-+#include <sys/socket.h> //XXX
- #include <net/if.h>
- #include <signal.h>
- #include <stdlib.h>
-diff -NBubrw -x '*.svn*' lib/dpif-netdev.c lib/dpif-netdev.c
---- lib/dpif-netdev.c   2010-09-10 23:36:43.000000000 +0200
-+++ lib/dpif-netdev.c    2011-10-25 15:57:13.646643609 +0200
-@@ -1043,7 +1043,7 @@
-     struct ofpbuf packet;
-     struct dp_netdev *dp;
- 
--    ofpbuf_init(&packet, DP_NETDEV_HEADROOM + max_mtu);
-+    ofpbuf_init(&packet, DP_NETDEV_HEADROOM + VLAN_ETH_HEADER_LEN + max_mtu);
-     LIST_FOR_EACH (dp, struct dp_netdev, node, &dp_netdev_list) {
-         struct dp_netdev_port *port;
-
---- configure.ac.orig	2010-09-14 06:49:48.000000000 +0200
-+++ configure.ac	2011-11-01 11:22:52.000000000 +0100
-@@ -41,6 +41,7 @@
- 
- AC_SEARCH_LIBS([pow], [m])
- AC_SEARCH_LIBS([clock_gettime], [rt])
-+AC_SEARCH_LIBS([timer_create], [rt])
- 
- OVS_CHECK_COVERAGE
- OVS_CHECK_NDEBUG
-@@ -52,6 +53,7 @@
- OVS_CHECK_OVSDBMONITOR
- OVS_CHECK_ER_DIAGRAMS
- OVS_CHECK_IF_PACKET
-+OVS_CHECK_IF_DL
- OVS_CHECK_STRTOK_R
- AC_CHECK_MEMBERS([struct stat.st_mtim.tv_nsec, struct stat.st_mtimensec],
-   [], [], [[#include <sys/stat.h>]])