5. ZLIB Compression Poll Mode Driver
The ZLIB PMD (librte_pmd_zlib) provides poll mode compression & decompression driver based on SW zlib library,
ZLIB PMD has support for:
Huffman code type:
Window size support:
- Min - 256 bytes
- Max - 32K
- Scatter-Gather and Stateful not supported.
To build DPDK with ZLIB library, the user is required to download the
Use following command for installation.
- For Fedora users::
sudo yum install zlib-devel
- For Ubuntu users::
sudo apt-get install zlib1g-dev
Once downloaded, the user needs to build the library.
To build from sources download zlib sources from http://zlib.net/ and do following before building DPDK:
make sudo make install
In order to enable this virtual compression PMD, user must:
To use the PMD in an application, user must:
rte_vdev_init("compress_zlib")within the application.
--vdev="compress_zlib"in the EAL options, which will call
The following parameter (optional) can be provided in the previous two calls:
socket_id:Specify the socket where the memory for the device is going to be allocated (by default, socket_id will be the socket where the core that is creating the PMD is running on).