The AES-NI GCM PMD (librte_pmd_aesni_gcm) provides poll mode crypto driver support for utilizing Intel multi buffer library (see AES-NI Multi-buffer PMD documentation to learn more about it, including installation).
AESNI GCM PMD has support for:
Authentication algorithms:
AEAD algorithms:
To build DPDK with the AESNI_GCM_PMD the user is required to download the multi-buffer library from here and compile it on their user system before building DPDK. The latest version of the library supported by this PMD is v0.53, which can be downloaded in https://github.com/01org/intel-ipsec-mb/archive/v0.53.zip.
make
make install
The library requires NASM to be built. Depending on the library version, it might require a minimum NASM version (e.g. v0.53 requires at least NASM 2.13.03).
NASM is packaged for different OS. However, on some OS the version is too old, so a manual installation is required. In that case, NASM can be downloaded from NASM website. Once it is downloaded, extract it and follow these steps:
./configure
make
make install
As a reference, the following table shows a mapping between the past DPDK versions and the external crypto libraries supported by them:
DPDK version | Crypto library version |
---|---|
16.04 - 16.11 | Multi-buffer library 0.43 - 0.44 |
17.02 - 17.05 | ISA-L Crypto v2.18 |
17.08 - 18.02 | Multi-buffer library 0.46 - 0.48 |
18.05 - 19.02 | Multi-buffer library 0.49 - 0.52 |
19.05+ | Multi-buffer library 0.52 - 0.53 |
In order to enable this virtual crypto PMD, user must:
To use the PMD in an application, user must:
The following parameters (all optional) can be provided in the previous two calls:
Example:
./l2fwd-crypto -l 1 -n 4 --vdev="crypto_aesni_gcm,socket_id=0,max_nb_sessions=128" \
-- -p 1 --cdev SW --chain AEAD --aead_algo "aes-gcm"