[ovs-dev] [PATCH v2] dpdk: Use DPDK 17.11.1 release.
Stokes, Ian
ian.stokes at intel.com
Mon Mar 12 11:40:15 UTC 2018
> -----Original Message-----
> From: Kevin Traynor [mailto:ktraynor at redhat.com]
> Sent: Monday, March 12, 2018 11:36 AM
> To: Stokes, Ian <ian.stokes at intel.com>; dev at openvswitch.org
> Subject: Re: [ovs-dev] [PATCH v2] dpdk: Use DPDK 17.11.1 release.
>
> On 03/12/2018 11:14 AM, Ian Stokes wrote:
> > 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 at intel.com>
> > ---
> >
> > v1 -> v2
> >
> > * Remove details of the rx vectorization virtio pmd bug from
> > vhost-user.rst as this has been fixed in DPDK 17.11.1.
> > ---
> > .travis/linux-build.sh | 2 +-
> > Documentation/faq/releases.rst | 4 ++--
> > Documentation/intro/install/dpdk.rst | 8 ++++----
> > Documentation/topics/dpdk/vhost-user.rst | 32
> > +++++---------------------------
> > 4 files changed, 12 insertions(+), 34 deletions(-)
> >
> > diff --git a/.travis/linux-build.sh b/.travis/linux-build.sh index
> > ee615c9..19b2ccf 100755
> > --- a/.travis/linux-build.sh
> > +++ b/.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
> > diff --git a/Documentation/faq/releases.rst
> > b/Documentation/faq/releases.rst index 4f805a5..7c65503 100644
> > --- a/Documentation/faq/releases.rst
> > +++ b/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:
> > diff --git a/Documentation/intro/install/dpdk.rst
> > b/Documentation/intro/install/dpdk.rst
> > index ed358d5..e0a96ac 100644
> > --- a/Documentation/intro/install/dpdk.rst
> > +++ b/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-17.11.1
> > $ cd $DPDK_DIR
> >
> > #. (Optional) Configure DPDK as a shared library diff --git
> > a/Documentation/topics/dpdk/vhost-user.rst
> > b/Documentation/topics/dpdk/vhost-user.rst
> > index 95517a6..3aef795 100644
> > --- a/Documentation/topics/dpdk/vhost-user.rst
> > +++ b/Documentation/topics/dpdk/vhost-user.rst
> > @@ -320,9 +320,9 @@ 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-17.11.1
>
> Nit: as it's now on a stable release, it should be:
> /root/dpdk/dpdk-stable-17.11.1
Good catch, I'll make the change on commit to dpdk_merge.
Thanks
Ian
>
> with that in master/2.9, both
> Acked-by: Kevin Traynor <ktraynor at redhat.com>
>
> thanks,
> Kevin.
>
> > $ export DPDK_TARGET=x86_64-native-linuxapp-gcc
> > $ export DPDK_BUILD=$DPDK_DIR/$DPDK_TARGET
> > $ cd $DPDK_DIR
> > @@ -355,28 +355,6 @@ 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
> > @@ -428,7 +406,7 @@ 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>
> > @@ -530,4 +508,4 @@ 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>`__
> >
More information about the dev
mailing list