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From: Olivier MATZ <olivier.matz@6wind.com>
To: dev@dpdk.org, yliu@fridaylinux.org, maxime.coquelin@redhat.com
Cc: stephen@networkplumber.org, stable@dpdk.org
Subject: Re: [PATCH 8/9] net/virtio: keep Rx handler whatever the Tx queue config
Date: Thu, 31 Aug 2017 15:50:38 +0200	[thread overview]
Message-ID: <20170831135037.ixkhiyirekwokoib@neon> (raw)
In-Reply-To: <20170831134015.1383-9-olivier.matz@6wind.com>

Platform description
--------------------

guest (dpdk)
+----------------+
|                |
|                |
|    port0       |
+----------------+
       |
       | virtio
       |
+----------------+
|     tap0       |
|                |
|                |
+----------------+
host (linux, vhost-net)

Host configuration
------------------

Start qemu with:

- a ne2k management interface to avoi any conflict with dpdk
- a virtio net device, connected to a tap interface through vhost-net
- mergeable buffers disabled

  /usr/bin/qemu-system-x86_64 -k fr -daemonize --enable-kvm -m 2G -cpu host \
    -smp 3 -serial telnet::40564,server,nowait -serial null \
    -qmp tcp::44340,server,nowait -monitor telnet::49229,server,nowait \
    -device ne2k_pci,mac=de:ad:de:01:02:03,netdev=user.0,addr=03 \
    -netdev user,id=user.0,hostfwd=tcp::34965-:22 \
    -netdev type=tap,id=vhostnet0,script=no,vhost=on,queues=8 \
    -device virtio-net-pci,mrg_rxbuf=off,netdev=vhostnet0,mq=on,vectors=17 \
    -hda "${VM_PATH}/ubuntu-16.04-template.qcow2" \
    -snapshot -vga none -display none

Guest configuration
-------------------

Compile dpdk:

  cd dpdk.org
  make config T=x86_64-native-linuxapp-gcc
  sed -i 's,CONFIG_RTE_LIBRTE_VIRTIO_DEBUG_INIT=n,CONFIG_RTE_LIBRTE_VIRTIO_DEBUG_INIT=y,' build/.config
  sed -i 's,CONFIG_RTE_LIBRTE_VIRTIO_DEBUG_DRIVER=n,CONFIG_RTE_LIBRTE_VIRTIO_DEBUG_DRIVER=y,' build/.config
  make -j4

Prepare environment:

  mkdir -p /mnt/huge
  mount -t hugetlbfs nodev /mnt/huge
  echo 256 > /sys/devices/system/node/node0/hugepages/hugepages-2048kB/nr_hugepages
  modprobe uio_pci_generic
  python usertools/dpdk-devbind.py -b uio_pci_generic 0000:00:02.0

  ./build/app/testpmd -l 0,1 --log-level 7 -- --total-num-mbufs=16384 \
    -i --port-topology=chained --disable-hw-vlan-filter \
    --disable-hw-vlan-strip --txqflags=0

Without the fix, standard path is used in rx and tx, but simple rx could
be used:

  ...
  PMD: set_rxtx_funcs(): virtio: using standard Rx path on port 0
  PMD: set_rxtx_funcs(): virtio: using standard Tx path on port 0
  ...

With the fix:

  ...
  PMD: set_rxtx_funcs(): virtio: using simple Rx path on port 0
  PMD: set_rxtx_funcs(): virtio: using standard Tx path on port 0
  ...

  reply	other threads:[~2017-08-31 13:50 UTC|newest]

Thread overview: 45+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-08-31 13:40 [PATCH 0/9] virtio fixes Olivier Matz
2017-08-31 13:40 ` [PATCH 1/9] net/virtio: revert "do not claim to support LRO" Olivier Matz
2017-08-31 13:40 ` [PATCH 2/9] net/virtio: revert "do not falsely claim to do IP checksum" Olivier Matz
2017-08-31 13:47   ` Olivier MATZ
2017-08-31 13:40 ` [PATCH 3/9] doc: fix description of L4 Rx checksum offload Olivier Matz
2017-08-31 13:40 ` [PATCH 4/9] net/virtio: fix log levels in configure Olivier Matz
2017-08-31 13:40 ` [PATCH 5/9] net/virtio: fix mbuf port for simple Rx function Olivier Matz
2017-08-31 13:48   ` Olivier MATZ
2017-08-31 13:40 ` [PATCH 6/9] net/virtio: fix queue setup consistency Olivier Matz
2017-08-31 13:49   ` Olivier MATZ
2017-08-31 13:40 ` [PATCH 7/9] net/virtio: rationalize setting of Rx/Tx handlers Olivier Matz
2017-09-01  9:19   ` Yuanhan Liu
2017-09-01  9:52     ` Olivier MATZ
2017-09-01 12:31       ` Yuanhan Liu
2017-09-06 14:40         ` Olivier MATZ
2017-09-07  8:13           ` Yuanhan Liu
2017-08-31 13:40 ` [PATCH 8/9] net/virtio: keep Rx handler whatever the Tx queue config Olivier Matz
2017-08-31 13:50   ` Olivier MATZ [this message]
2017-09-01  9:25   ` Yuanhan Liu
2017-09-01  9:58     ` Olivier MATZ
2017-09-01 12:22       ` Yuanhan Liu
2017-08-31 13:40 ` [PATCH 9/9] net/virtio: fix Rx handler when checksum is requested Olivier Matz
2017-08-31 13:51   ` Olivier MATZ
2017-09-07 12:13 ` [PATCH v2 00/10] virtio fixes Olivier Matz
2017-09-07 12:13   ` [PATCH v2 01/10] net/virtio: revert "do not claim to support LRO" Olivier Matz
2017-09-07 12:13   ` [PATCH v2 02/10] net/virtio: revert "do not falsely claim to do IP checksum" Olivier Matz
2017-09-07 12:13   ` [PATCH v2 03/10] doc: fix description of L4 Rx checksum offload Olivier Matz
2017-09-07 12:13   ` [PATCH v2 04/10] net/virtio: fix log levels in configure Olivier Matz
2017-09-07 12:13   ` [PATCH v2 05/10] net/virtio: fix mbuf port for simple Rx function Olivier Matz
2017-09-07 12:13   ` [PATCH v2 06/10] net/virtio: fix queue setup consistency Olivier Matz
2017-12-06  5:25     ` Tiwei Bie
2017-12-07 14:14       ` Olivier MATZ
2017-12-08  2:17         ` Tiwei Bie
2018-02-01  3:14     ` Yao, Lei A
2018-02-01  8:27       ` Olivier Matz
2018-02-07  8:31         ` Xu, Qian Q
2018-02-07 22:01           ` Olivier Matz
2018-02-09  5:44             ` Wang, Zhihong
2018-02-09  8:59               ` Maxime Coquelin
2018-02-09  9:40                 ` Maxime Coquelin
2017-09-07 12:13   ` [PATCH v2 07/10] net/virtio: rationalize setting of Rx/Tx handlers Olivier Matz
2017-09-07 12:13   ` [PATCH v2 08/10] net/virtio: remove SSE check Olivier Matz
2017-09-07 12:13   ` [PATCH v2 09/10] net/virtio: keep Rx handler whatever the Tx queue config Olivier Matz
2017-09-07 12:13   ` [PATCH v2 10/10] net/virtio: fix Rx handler when checksum is requested Olivier Matz
2017-09-12  2:31   ` [PATCH v2 00/10] virtio fixes Yuanhan Liu

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