The DPDK driver can be used with the AVST/AXIST Packet Generate/Check design example to test the packet generator and checker design. The following diagram shows the testing strategy.
- Update the static channel mapping in
p0_software/dpdk/dpdk/examples/mcdma-test/perfq/perfq_app.h by modifying the following parameters:
• /* PF count starts from 1 */ #define IFC_QDMA_CUR_PF <pf number> • /* VF count starts from 1. Zero implies PF was used instead of VF */ #define IFC_QDMA_CUR_VF <vf number> • /* Number of PFs */ #define IFC_QDMA_PFS <number of PFs> /* Channels available per PF */ #define IFC_QDMA_PER_PF_CHNLS <number of channels per PF> • /* Channels available per VF */ #define IFC_QDMA_PER_VF_CHNLS <number of channels per VF> • /* Number of VFs per PF */ #define IFC_QDMA_PER_PF_VFS <number of VFs per PF>
- Ensure
that the steps outlined in the Prerequisites section are completed before verifying the Packet
Generate/Check design example. Alternatively, you may use the driver installation
script located at p0_software/DriverLoadUnload.sh.
- To allow the script execution, run the command below:
$ chmod +x DriverLoadUnload.sh
- Run the script, then select the desired driver type to
proceed with the installation.
$ ./DriverLoadUnload.sh
Note: Driver installation requires entering the sudo password. - To allow the script execution, run the command below:
- Run
the following
commands to
check if the setup works correctly after the driver installation
above:
$ cd p0_software/dpdk/dpdk/patches/v21.11.2/dpdk-stable/build/examples/mcdma-test/perfq
$sudo ./build/mcdma-test -m 8192 --file-prefix=pf0 -- -b 0000:01:00.0 \ -p 32768 -d 2 -c 1 -a 2 -l 5 -z -n
Configuration:- 1 DMA channel (-c 1)
- Packet generator bidirectional (-z)
- Payload length of 32,768 bytes in each descriptor (-p 32768)
- Transfer the data every 5 seconds (-l 5)
- Dump the progress log every 2 seconds (-d 2)
- Configure the number of channels in ED (-n)
- Number of threads to be used for DMA purpose (-a 2)