dpdk: Use DPDK 17.11.1 release.

Modify docs and travis linux build script to use the DPDK 17.11.1
release branch to benefit from most recent bug fixes.

There are no new features introduced in the DPDK release, only back
ported bug fixes. For completeness these bug fixes have been documented
under the 17.11.1 section in the link below.

http://dpdk.org/doc/guides-17.11/rel_notes/release_17_11.html#id1

Signed-off-by: Ian Stokes <ian.stokes@intel.com>
Acked-by: Kevin Traynor <ktraynor@redhat.com>

.travis/linux-build.sh

@@ -83,7 +83,7 @@ fi
 
 if [ "$DPDK" ]; then
     if [ -z "$DPDK_VER" ]; then
-        DPDK_VER="17.11"
+        DPDK_VER="17.11.1"
     fi
     install_dpdk $DPDK_VER
     if [ "$CC" = "clang" ]; then

Documentation/faq/releases.rst

@@ -163,9 +163,9 @@ Q: What DPDK version does each Open vSwitch release work with?
     2.4.x        2.0
     2.5.x        2.2
     2.6.x        16.07.2
-    2.7.x        16.11.4
+    2.7.x        16.11.5
     2.8.x        17.05.2
-    2.9.x        17.11
+    2.9.x        17.11.1
     ============ =======
 
 Q: I get an error like this when I configure Open vSwitch:

Documentation/intro/install/dpdk.rst

@@ -40,7 +40,7 @@ Build requirements
 In addition to the requirements described in :doc:`general`, building Open
 vSwitch with DPDK will require the following:
 
-- DPDK 17.11
+- DPDK 17.11.1
 
 - A `DPDK supported NIC`_
 
@@ -69,9 +69,9 @@ Install DPDK
 #. Download the `DPDK sources`_, extract the file and set ``DPDK_DIR``::
 
        $ cd /usr/src/
-       $ wget http://fast.dpdk.org/rel/dpdk-17.11.tar.xz
-       $ tar xf dpdk-17.11.tar.xz
-       $ export DPDK_DIR=/usr/src/dpdk-17.11
+       $ wget http://fast.dpdk.org/rel/dpdk-17.11.1.tar.xz
+       $ tar xf dpdk-17.11.1.tar.xz
+       $ export DPDK_DIR=/usr/src/dpdk-stable-17.11.1
        $ cd $DPDK_DIR
 
 #. (Optional) Configure DPDK as a shared library

Documentation/topics/dpdk/vhost-user.rst

@@ -323,9 +323,9 @@ To begin, instantiate a guest as described in :ref:`dpdk-vhost-user` or
 DPDK sources to VM and build DPDK::
 
     $ cd /root/dpdk/
-    $ wget http://fast.dpdk.org/rel/dpdk-17.11.tar.xz
-    $ tar xf dpdk-17.11.tar.xz
-    $ export DPDK_DIR=/root/dpdk/dpdk-17.11
+    $ wget http://fast.dpdk.org/rel/dpdk-17.11.1.tar.xz
+    $ tar xf dpdk-17.11.1.tar.xz
+    $ export DPDK_DIR=/root/dpdk/dpdk-stable-17.11.1
     $ export DPDK_TARGET=x86_64-native-linuxapp-gcc
     $ export DPDK_BUILD=$DPDK_DIR/$DPDK_TARGET
     $ cd $DPDK_DIR
@@ -358,28 +358,6 @@ Finally, start the application::
 
     # TODO
 
-.. important::
-
-  DPDK v17.11 virtio PMD contains a bug in the vectorized Rx function that
-  affects testpmd/DPDK guest applications. As such, guest DPDK applications
-  should use a non-vectorized Rx function.
-
-The DPDK v17.11 virtio net driver contains a bug that prevents guest DPDK
-applications from receiving packets when the vectorized Rx function is used.
-This only occurs when guest-bound traffic is live before a DPDK application is
-started within the guest, and where two or more forwarding cores are used. As
-such, it is not recommended for guests which execute DPDK applications to use
-the virtio vectorized Rx function. A simple method of ensuring that a non-
-vectorized Rx function is used is to enable mergeable buffers for the guest,
-with the following QEMU command line option::
-
-    mrg_rxbuf=on
-
-Additional details regarding the virtio driver bug are available on the
-`DPDK mailing list`_.
-
-.. _DPDK mailing list: http://dpdk.org/ml/archives/dev/2017-December/082801.html
-
 .. _dpdk-vhost-user-xml:
 
 Sample XML
@@ -431,7 +409,7 @@ Sample XML
         </disk>
         <disk type='dir' device='disk'>
           <driver name='qemu' type='fat'/>
-          <source dir='/usr/src/dpdk-stable-17.05.2'/>
+          <source dir='/usr/src/dpdk-stable-17.11.1'/>
           <target dev='vdb' bus='virtio'/>
           <readonly/>
         </disk>
@@ -533,4 +511,4 @@ issue can be found on
 
 Further information can be found in the
 `DPDK documentation
-<http://dpdk.readthedocs.io/en/v17.05/prog_guide/vhost_lib.html>`__
+<http://dpdk.readthedocs.io/en/v17.11/prog_guide/vhost_lib.html>`__