3. OCTEON TX ZIP Compression Poll Mode Driver
The OCTEON TX ZIP PMD (librte_pmd_octeontx_zip) provides poll mode compression & decompression driver for ZIP HW offload device, found in Cavium OCTEON TX SoC family.
More information can be found at Cavium, Inc Official Website.
OCTEON TX ZIP PMD has support for:
Huffman code type:
Window size support:
- 2 to 2^14
- Chained mbufs are not supported.
3.3. Supported OCTEON TX SoCs
3.4. Steps To Setup Platform
OCTEON TX SDK includes kernel image which provides OCTEON TX ZIP PF driver to manage configuration of ZIPVF device Required version of SDK is “OCTEONTX-SDK-6.2.0-build35” or above.
SDK can be install by using below command. #rpm -ivh OCTEONTX-SDK-6.2.0-build35.x86_64.rpm –force –nodeps It will install OCTEONTX-SDK at following default location /usr/local/Cavium_Networks/OCTEONTX-SDK/
For more information on building and booting linux kernel on OCTEON TX please refer /usr/local/Cavium_Networks/OCTEONTX-SDK/docs/OcteonTX-SDK-UG_6.2.0.pdf.
SDK and related information can be obtained from: Cavium support site.
3.5.1. Driver Compilation
To compile the OCTEON TX ZIP PMD for Linux arm64 gcc target, run the
cd <DPDK-source-directory> make config T=arm64-thunderx-linux-gcc install
The OCTEON TX zip is exposed as pci device which consists of a set of PCIe VF devices. On EAL initialization, ZIP PCIe VF devices will be probed. To use the PMD in an application, user must:
run dev_bind script to bind eight ZIP PCIe VFs to the
./usertools/dpdk-devbind.py -b vfio-pci 0001:04:00.1 ./usertools/dpdk-devbind.py -b vfio-pci 0001:04:00.2 ./usertools/dpdk-devbind.py -b vfio-pci 0001:04:00.3 ./usertools/dpdk-devbind.py -b vfio-pci 0001:04:00.4 ./usertools/dpdk-devbind.py -b vfio-pci 0001:04:00.5 ./usertools/dpdk-devbind.py -b vfio-pci 0001:04:00.6 ./usertools/dpdk-devbind.py -b vfio-pci 0001:04:00.7 ./usertools/dpdk-devbind.py -b vfio-pci 0001:04:01.0
The unit test cases can be tested as below:
reserve enough huge pages cd to the top-level DPDK directory export RTE_TARGET=arm64-thunderx-linux-gcc export RTE_SDK=`pwd` cd to app/test type the command "make" to compile run the tests with "./test" type the command "compressdev_autotest" to test