3. Vdev_test¶
Vdev_test is a simple application that it forwards packets received from rx queue to tx queue on the main core. It can become a secondary process of the spp_primary. It is mainly used for testing spp_pipe but it can be used to test any virtual Ethernet devices as well.
3.1. Usage¶
vdev_test [EAL options] -- [--send] [--create devargs] device-name
Vdev_test runs foreground and stops when Ctrl-C is pressed. If --send
option specified a packet is sent first. The virtual Ethernet device can
be created to specify --create
option.
Note
Since the device can be created by EAL --vdev
option for a
primary process, --create
option mainly used by a secondary
process.
3.2. Examples¶
3.2.1. Examining spp_pipe¶
It is assumed that pipe ports were created beforehand. First run vdev_test
without --send
option.
# terminal 1
$ sudo vdev_test -l 8 -n 4 --proc-type secondary -- spp_pipe0
Then run vdev_test with --send
option on another terminal.
# terminal 2
$ sudo vdev_test -l 9 -n 4 --proc-type secondary -- --send spp_pipe1
Press Ctrl-C to stop processes on both terminals after for a while.
3.2.2. Examining vhost¶
This example is independent of SPP. First run vdev_test using eth_vhost0
without --send
option.
# terminal 1
$ sudo vdev_test -l 8 -n 4 --vdev eht_vhost0,iface=/tmp/sock0,client=1 \
--file-prefix=app1 -- eth_vhost0
Then run vdev_test using virtio_user0 with --send
option on another
terminal.
# terminal 1
$ sudo vdev_test -l 9 -n 4 --vdev virtio_user0,path=/tmp/sock0,server=1 \
--file-prefix=app2 --single-file-segments -- --send virtio_user0
Press Ctrl-C to stop processes on both terminals after for a while.