[dpdk-users] Usage of example vhost (vhost-switch)
madhukar mythri
madhukar.mythri at gmail.com
Wed Sep 18 11:00:45 CEST 2019
Did you configured the testpmd with "io" forwarding mode?
you can cross-check with this command: "show config rxtx".
For more information, you can go-through this testpmd documentation under
"4.4.7" section:
https://doc.dpdk.org/guides/testpmd_app_ug/testpmd_funcs.html
~~ Madhukar.
On Wed, Sep 18, 2019 at 9:39 AM Derek <jwsu1986 at gmail.com> wrote:
> Hi,
>
> I try to run the vhost example in DPDK.
>
> The steps I did are:
>
> (1) The guest vm created by QEMU using the shell script
> #!/bin/bash
>
> USER_SOCK="/tmp/sock0"
> MPATH="/dev/hugepages"
> MEMSZ=2048
> IMG=/home/derek/ubuntu-guest.img
>
> qemu-system-x86_64 \
> -boot c \
> -machine accel=kvm -cpu host \
> -m ${MEMSZ} -object
>
> memory-backend-file,id=hugemem,size=${MEMSZ}M,mem-path=/dev/hugepages,share=on
> \
> -mem-prealloc -smp 2 -numa node,memdev=hugemem \
> -chardev socket,id=char1,path=/tmp/sock0,server \
> -netdev type=vhost-user,id=hostnet1,chardev=char1 \
> -device virtio-net-pci,netdev=hostnet1,id=net1,mac=52:54:00:00:00:14 \
> -drive format=raw,file=${IMG} -vnc :4,password -monitor stdio
>
> (2) run the vhost-switch on the host
> #> ./build/vhost-switch -l 0-3 -n 4--2 uge-dir /dev/hugepages --socket-mem
> 1024 --log-level 8 -w 00000:73:00.1 -- --socket-file /tmp/sock0 --client -p
> 0x1 --stats 20
>
> (3) The guest vm is started successfully. Then, in the guest vm i did
> #> ./x86_64-native-gcc/app/testpmd -l 0-1 -- -i
> > start tx_first
>
> I can see the TX packets on the host's vhost-switch stats and got the
> message
> VHOST_DATA: (0) mac 52:54:00:00:00:14 and vlan 1000 registered
>
> Device statistics =================================
> Statistics for device 0
> -----------------------
> TX total: 32
> TX dropped: 0
> TX successful: 32
> RX total: 0
> RX dropped: 0
> RX successful: 0
> ===================================================
>
>
> My question is that how can I inject packets to the MAC address and VLAN ID
> 1000.
> I've tried to setup a pktgen on another host whose physical NIC is directly
> connected to the physical NIC port of the host. Then, set pktgen's dst mac
> to 52:54:00:00:00:14 and vlan id to 1000. But the "Device statistics" is
> not changed.
>
> Any idea for this problem? Very thanks.
>
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