9. Marvell cnxk Crypto Poll Mode Driver
The cnxk crypto poll mode driver provides support for offloading cryptographic operations to cryptographic accelerator units on the Marvell OCTEON cnxk SoC family.
The cnxk crypto PMD code is organized into different sets of files. The file names starting with cn9k and cn10k provides support for CN9XX and CN10XX respectively. The common code between the SoCs is present in file names starting with cnxk.
More information about OCTEON cnxk SoCs may be obtained from https://www.marvell.com
9.1. Supported OCTEON cnxk SoCs
- CN9XX
- CN10XX
9.2. Features
The OCTEON cnxk crypto PMD has support for:
9.2.1. Symmetric Crypto Algorithms
Cipher algorithms:
RTE_CRYPTO_CIPHER_NULL
RTE_CRYPTO_CIPHER_3DES_CBC
RTE_CRYPTO_CIPHER_3DES_ECB
RTE_CRYPTO_CIPHER_AES_CBC
RTE_CRYPTO_CIPHER_AES_CTR
RTE_CRYPTO_CIPHER_AES_XTS
RTE_CRYPTO_CIPHER_DES_CBC
RTE_CRYPTO_CIPHER_KASUMI_F8
RTE_CRYPTO_CIPHER_SNOW3G_UEA2
RTE_CRYPTO_CIPHER_ZUC_EEA3
Hash algorithms:
RTE_CRYPTO_AUTH_NULL
RTE_CRYPTO_AUTH_AES_GMAC
RTE_CRYPTO_AUTH_KASUMI_F9
RTE_CRYPTO_AUTH_MD5
RTE_CRYPTO_AUTH_MD5_HMAC
RTE_CRYPTO_AUTH_SHA1
RTE_CRYPTO_AUTH_SHA1_HMAC
RTE_CRYPTO_AUTH_SHA224
RTE_CRYPTO_AUTH_SHA224_HMAC
RTE_CRYPTO_AUTH_SHA256
RTE_CRYPTO_AUTH_SHA256_HMAC
RTE_CRYPTO_AUTH_SHA384
RTE_CRYPTO_AUTH_SHA384_HMAC
RTE_CRYPTO_AUTH_SHA512
RTE_CRYPTO_AUTH_SHA512_HMAC
RTE_CRYPTO_AUTH_SNOW3G_UIA2
RTE_CRYPTO_AUTH_ZUC_EIA3
RTE_CRYPTO_AUTH_AES_CMAC
AEAD algorithms:
RTE_CRYPTO_AEAD_AES_GCM
RTE_CRYPTO_AEAD_CHACHA20_POLY1305
9.2.2. Asymmetric Crypto Algorithms
RTE_CRYPTO_ASYM_XFORM_RSA
RTE_CRYPTO_ASYM_XFORM_MODEX
9.3. Installation
The OCTEON cnxk crypto PMD may be compiled natively on an OCTEON cnxk platform or cross-compiled on an x86 platform.
Refer to Marvell cnxk platform guide for instructions to build your DPDK application.
Note
The OCTEON cnxk crypto PMD uses services from the kernel mode OCTEON cnxk crypto PF driver in linux. This driver is included in the OCTEON TX SDK.
9.4. Initialization
CN9K Initialization
List the CPT PF devices available on cn9k platform:
lspci -d:a0fd
a0fd
is the CPT PF device id. You should see output similar to:
0002:10:00.0 Class 1080: Device 177d:a0fd
Set sriov_numvfs
on the CPT PF device, to create a VF:
echo 1 > /sys/bus/pci/devices/0002:10:00.0/sriov_numvfs
Bind the CPT VF device to the vfio_pci driver:
cd <dpdk directory>
./usertools/dpdk-devbind.py -u 0002:10:00.1
./usertools/dpdk-devbind.py -b vfio-pci 0002:10.00.1
Note
For CN98xx SoC, it is recommended to use even and odd DBDF VFs to achieve higher performance as even VF uses one crypto engine and odd one uses another crypto engine.
Ensure that sufficient huge pages are available for your application:
dpdk-hugepages.py --setup 4G --pagesize 512M
Refer to Use of Hugepages in the Linux Environment for more details.
CN10K Initialization
List the CPT PF devices available on cn10k platform:
lspci -d:a0f2
a0f2
is the CPT PF device id. You should see output similar to:
0002:20:00.0 Class 1080: Device 177d:a0f2
Set sriov_numvfs
on the CPT PF device, to create a VF:
echo 1 > /sys/bus/pci/devices/0002:20:00.0/sriov_numvfs
Bind the CPT VF device to the vfio_pci driver:
cd <dpdk directory>
./usertools/dpdk-devbind.py -u 0002:20:00.1
./usertools/dpdk-devbind.py -b vfio-pci 0002:20:00.1
9.5. Runtime Config Options
Maximum queue pairs limit
(default63
)The number of maximum queue pairs supported by the device, can be limited during runtime by using
max_qps_limit
devargs
parameter.For example:
-a 0002:20:00.1,max_qps_limit=4
With the above configuration, the number of maximum queue pairs supported by the device is limited to 4.
9.6. Debugging Options
# | Component | EAL log command |
---|---|---|
1 | CPT | –log-level=’pmd.crypto.cnxk,8’ |
9.7. Testing
The symmetric crypto operations on OCTEON cnxk crypto PMD may be verified by running the test application:
CN9K
./dpdk-test
RTE>>cryptodev_cn9k_autotest
CN10K
./dpdk-test
RTE>>cryptodev_cn10k_autotest
The asymmetric crypto operations on OCTEON cnxk crypto PMD may be verified by running the test application:
CN9K
./dpdk-test
RTE>>cryptodev_cn9k_asym_autotest
CN10K
./dpdk-test
RTE>>cryptodev_cn10k_asym_autotest
9.8. Lookaside IPsec Support
The OCTEON cnxk SoCs can accelerate IPsec traffic in lookaside protocol mode,
with its cryptographic accelerator (CPT). OCTEON cnxk crypto PMD
implements
this as an RTE_SECURITY_ACTION_TYPE_LOOKASIDE_PROTOCOL
offload.
Refer to Security Library for more details on protocol offloads.
This feature can be tested with ipsec-secgw sample application.
9.8.1. Supported OCTEON cnxk SoCs
- CN9XX
- CN10XX
9.8.2. CN9XX Features supported
- IPv4
- IPv6
- ESP
- ESN
- Anti-replay
- Tunnel mode
- Transport mode(IPv4)
- UDP Encapsulation
9.8.2.1. AEAD algorithms
- AES-128/192/256-GCM
9.8.2.2. Cipher algorithms
- NULL
- AES-128/192/256-CBC
- AES-128/192/256-CTR
9.8.2.3. Auth algorithms
- SHA1-HMAC
- SHA256-128-HMAC
- SHA384-192-HMAC
- SHA512-256-HMAC
- AES-XCBC-96
9.8.3. CN10XX Features supported
- IPv4
- ESP
- ESN
- Anti-replay
- Tunnel mode
- Transport mode
- UDP Encapsulation
9.8.3.1. AEAD algorithms
- AES-128/192/256-GCM
9.8.3.2. Cipher algorithms
- NULL
- AES-128/192/256-CBC
- AES-128/192/256-CTR
9.8.3.3. Auth algorithms
- NULL
- SHA1-HMAC
- SHA256-128-HMAC
- SHA384-192-HMAC
- SHA512-256-HMAC
- AES-XCBC-96