Re: [dts] [PATCH v1] test_plans/virtio_user_for_container_networking: add test plan for container networking with virtio-user

["Tu, Lijuan" <lijuan.tu@intel.com>]

Applied, thanks

> -----Original Message-----
> From: dts [mailto:dts-bounces@dpdk.org] On Behalf Of Yinan
> Sent: Wednesday, May 22, 2019 2:34 AM
> To: dts@dpdk.org
> Cc: Wang, Yinan <yinan.wang@intel.com>
> Subject: [dts] [PATCH v1] test_plans/virtio_user_for_container_networking:
> add test plan for container networking with virtio-user
> 
> From: Wang Yinan <yinan.wang@intel.com>
> 
> Signed-off-by: Wang Yinan <yinan.wang@intel.com>
> ---
>  ...ser_for_container_networking_test_plan.rst | 108 ++++++++++++++++++
>  1 file changed, 108 insertions(+)
>  create mode 100644
> test_plans/virtio_user_for_container_networking_test_plan.rst
> 
> diff --git a/test_plans/virtio_user_for_container_networking_test_plan.rst
> b/test_plans/virtio_user_for_container_networking_test_plan.rst
> new file mode 100644
> index 0000000..2d68f5f
> --- /dev/null
> +++ b/test_plans/virtio_user_for_container_networking_test_plan.rst
> @@ -0,0 +1,108 @@
> +.. Copyright (c) <2019>, Intel Corporation
> +   All rights reserved.
> +
> +   Redistribution and use in source and binary forms, with or without
> +   modification, are permitted provided that the following conditions
> +   are met:
> +
> +   - Redistributions of source code must retain the above copyright
> +     notice, this list of conditions and the following disclaimer.
> +
> +   - 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.
> +
> +   - Neither the name of Intel Corporation nor the names of its
> +     contributors may be used to endorse or promote products derived
> +     from this software without specific prior written permission.
> +
> +   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
> CONTRIBUTORS
> +   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
> +   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
> FITNESS
> +   FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
> +   COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
> INDIRECT,
> +   INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
> +   (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
> OR
> +   SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
> +   HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
> CONTRACT,
> +   STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
> +   ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
> ADVISED
> +   OF THE POSSIBILITY OF SUCH DAMAGE.
> +
> +==============================================
> +Virtio_user for container networking test plan
> +==============================================
> +
> +Description
> +===========
> +
> +Container becomes more and more popular for strengths, like low
> +overhead, fast boot-up time, and easy to deploy, etc.
> +Virtio, in essence, is a shm-based solution to transmit/receive
> +packets. How is memory shared? In VM's case, qemu always shares the
> +whole physical layout of VM to vhost backend. But it's not feasible for
> +a container, as a process, to share all virtual memory regions to
> +backend. So only those virtual memory regions (aka, hugepages
> +initialized in DPDK) are sent to backend. It restricts that only addresses in
> these areas can be used to transmit or receive packets.
> +
> +Limitations
> +-----------
> +We have below limitations in this solution:
> + * Cannot work with --huge-unlink option. As we need to reopen the
> hugepage
> +   file to share with vhost backend.
> + * Cannot work with --no-huge option. Currently, DPDK uses anonymous
> mapping
> +   under this option which cannot be reopened to share with vhost backend.
> + * Cannot work when there are more than
> VHOST_MEMORY_MAX_NREGIONS(8) hugepages.
> +   If you have more regions (especially when 2MB hugepages are used), the
> option,
> +   --single-file-segments, can help to reduce the number of shared files.
> + * Applications should not use file name like HUGEFILE_FMT ("%smap_%d").
> That
> +   will bring confusion when sharing hugepage files with backend by name.
> + * Root privilege is a must. DPDK resolves physical addresses of hugepages
> +   which seems not necessary, and some discussions are going on to remove
> this
> +   restriction.
> +
> +Test Case 1: packet forward test for container networking
> +=========================================================
> +
> +1. Mount hugepage::
> +
> +    mkdir /mnt/huge
> +    mount -t hugetlbfs nodev /mnt/huge
> +
> +2. Bind one port to igb_uio, launch vhost::
> +
> +    ./testpmd -l 1-2 -n 4 --socket-mem 1024,1024  --file-prefix=vhost
> + --vdev 'net_vhost0,iface=vhost-net,queues=1,client=0' -- -i
> +
> +2. Start a container instance with a virtio-user port::
> +
> +    docker run -i -t --privileged -v /root/dpdk/vhost-net:/tmp/vhost-net -v
> /mnt/huge:/dev/hugepages \
> +    -v /root/dpdk:/root/dpdk dpdk_image ./root/dpdk/x86_64-native-
> linuxapp-gcc/app/testpmd -l 3-4 -n 4 -m 1024 --no-pci --file-prefix=container
> \
> +    --vdev=virtio_user0,mac=00:11:22:33:44:10,path=/tmp/vhost-net -- -i
> +
> +3. Send packet with packet generator with different packet size,includes [64,
> 128, 256, 512, 1024, 1518], check virtio could receive and fwd packets
> correctly in container::
> +
> +    testpmd>show port stats all
> +
> +Test Case 2: packet forward with multi-queues for container networking
> +===============================================================
> =======
> +
> +1. Mount hugepage::
> +
> +    mkdir /mnt/huge
> +    mount -t hugetlbfs nodev /mnt/huge
> +
> +2. Bind one port to igb_uio, launch vhost::
> +
> +    ./testpmd -l 1-3 -n 4 --socket-mem 1024,1024  --file-prefix=vhost
> + --vdev 'net_vhost0,iface=vhost-net,queues=2,client=0' -- -i
> + --nb-cores=2
> +
> +2. Start a container instance with a virtio-user port::
> +
> +    docker run -i -t --privileged -v /root/dpdk/vhost-net:/tmp/vhost-net -v
> /mnt/huge:/dev/hugepages \
> +    -v /root/dpdk:/root/dpdk dpdk_image ./root/dpdk/x86_64-native-
> linuxapp-gcc/app/testpmd -l 4-6 -n 4 -m 1024 --no-pci --file-prefix=container
> \
> +
> + --vdev=virtio_user0,mac=00:11:22:33:44:10,path=/tmp/vhost-net,queues=2
> + -- -i --rxq=2 --txq=2 --nb-cores=2
> +
> +3. Send packet with packet generator with different packet size,includes [64,
> 128, 256, 512, 1024, 1518], check virtio could receive and fwd packets in
> container with two queues::
> +
> +    testpmd>show port stats all
> +    testpmd>stop
> --
> 2.17.1