6. dpdk-test-crypto-perf Application

The dpdk-test-crypto-perf tool is a Data Plane Development Kit (DPDK) utility that allows measuring performance parameters of PMDs available in the crypto tree. There are available two measurement types: throughput and latency. User can use multiply cores to run tests on but only one type of crypto PMD can be measured during single application execution. Cipher parameters, type of device, type of operation and chain mode have to be specified in the command line as application parameters. These parameters are checked using device capabilities structure.

6.1. Limitations

On hardware devices the cycle-count doesn’t always represent the actual offload cost. The cycle-count only represents the offload cost when the hardware accelerator is not fully loaded, when loaded the cpu cycles freed up by the offload are still consumed by the test tool and included in the cycle-count. These cycles are consumed by retries and inefficient API calls enqueuing and dequeuing smaller bursts than specified by the cmdline parameter. This results in a larger cycle-count measurement and should not be interpreted as an offload cost measurement. Using “pmd-cyclecount” mode will give a better idea of actual costs of hardware acceleration.

On hardware devices the throughput measurement is not necessarily the maximum possible for the device, e.g. it may be necessary to use multiple cores to keep the hardware accelerator fully loaded and so measure maximum throughput.

6.2. Compiling the Application

Step 1: PMD setting

The dpdk-test-crypto-perf tool depends on crypto device drivers PMD which are disabled by default in the build configuration file common_base. The crypto device drivers PMD which should be tested can be enabled by setting:

CONFIG_RTE_LIBRTE_PMD_<name>=y

Setting example for open ssl PMD:

CONFIG_RTE_LIBRTE_PMD_OPENSSL=y

Step 2: Linearization setting

It is possible linearized input segmented packets just before crypto operation for devices which doesn’t support scatter-gather, and allows to measure performance also for this use case.

To set on the linearization options add below definition to the cperf_ops.h file:

#define CPERF_LINEARIZATION_ENABLE

Step 3: Build the application

Execute the dpdk-setup.sh script to build the DPDK library together with the dpdk-test-crypto-perf application.

Initially, the user must select a DPDK target to choose the correct target type and compiler options to use when building the libraries. The user must have all libraries, modules, updates and compilers installed in the system prior to this, as described in the earlier chapters in this Getting Started Guide.

6.3. Running the Application

The tool application has a number of command line options:

dpdk-test-crypto-perf [EAL Options] -- [Application Options]

6.3.1. EAL Options

The following are the EAL command-line options that can be used in conjunction with the dpdk-test-crypto-perf application. See the DPDK Getting Started Guides for more information on these options.

-c <COREMASK> or -l <CORELIST>

Set the hexadecimal bitmask of the cores to run on. The corelist is a list cores to use.
-w <PCI>

Add a PCI device in white list.
--vdev <driver><id>

Add a virtual device.

6.3.2. Application Options

The following are the application command-line options:

--ptest type
Set test type, where type is one of the following:
throughput latency verify pmd-cyclecount
--silent

Disable options dump.
--pool-sz <n>

Set the number of mbufs to be allocated in the mbuf pool.
--total-ops <n>

Set the number of total operations performed.
--burst-sz <n>
Set the number of packets per burst.
This can be set as:
Single value (i.e. --burst-sz 16)

Range of values, using the following structure min:inc:max, where min is minimum size, inc is the increment size and max is the maximum size (i.e. --burst-sz 16:2:32)

List of values, up to 32 values, separated in commas (i.e. --burst-sz 16,24,32)
--buffer-sz <n>
Set the size of single packet (plaintext or ciphertext in it).
This can be set as:
Single value (i.e. --buffer-sz 16)

Range of values, using the following structure min:inc:max, where min is minimum size, inc is the increment size and max is the maximum size (i.e. --buffer-sz 16:2:32)

List of values, up to 32 values, separated in commas (i.e. --buffer-sz 32,64,128)
--imix <n>

Set the distribution of packet sizes.

A list of weights must be passed, containing the same number of items than buffer-sz, so each item in this list will be the weight of the packet size on the same position in the buffer-sz parameter (a list have to be passed in that parameter).

Example:

To test a distribution of 20% packets of 64 bytes, 40% packets of 100 bytes and 40% packets of 256 bytes, the command line would be: --buffer-sz 64,100,256 --imix 20,40,40. Note that the weights do not have to be percentages, so using --imix 1,2,2 would result in the same distribution
--segment-sz <n>

Set the size of the segment to use, for Scatter Gather List testing. By default, it is set to the size of the maximum buffer size, including the digest size, so a single segment is created.

--devtype <name>

Set device type, where name is one of the following:

crypto_null
crypto_aesni_mb
crypto_aesni_gcm
crypto_openssl
crypto_qat
crypto_snow3g
crypto_kasumi
crypto_zuc
crypto_dpaa_sec
crypto_dpaa2_sec
crypto_armv8
crypto_scheduler
crypto_mvsam

--optype <name>
Set operation type, where name is one of the following:
cipher-only auth-only cipher-then-auth auth-then-cipher aead
For GCM/CCM algorithms you should use aead flag.
--sessionless

Enable session-less crypto operations mode.
--out-of-place

Enable out-of-place crypto operations mode.
--test-file <name>

Set test vector file path. See the Test Vector File chapter.
--test-name <name>

Set specific test name section in the test vector file.

--cipher-algo <name>

Set cipher algorithm name, where name is one of the following:
3des-cbc
3des-ecb
3des-ctr
aes-cbc
aes-ctr
aes-ecb
aes-f8
aes-xts
arc4
null
kasumi-f8
snow3g-uea2
zuc-eea3

--cipher-op <mode>
Set cipher operation mode, where mode is one of the following:
encrypt decrypt
--cipher-key-sz <n>

Set the size of cipher key.
--cipher-iv-sz <n>

Set the size of cipher iv.

--auth-algo <name>

Set authentication algorithm name, where name is one of the following:

3des-cbc
aes-cbc-mac
aes-cmac
aes-gmac
aes-xcbc-mac
md5
md5-hmac
sha1
sha1-hmac
sha2-224
sha2-224-hmac
sha2-256
sha2-256-hmac
sha2-384
sha2-384-hmac
sha2-512
sha2-512-hmac
kasumi-f9
snow3g-uia2
zuc-eia3

--auth-op <mode>
Set authentication operation mode, where mode is one of the following:
verify generate
--auth-key-sz <n>

Set the size of authentication key.
--auth-iv-sz <n>

Set the size of auth iv.
--aead-algo <name>
Set AEAD algorithm name, where name is one of the following:
aes-ccm aes-gcm
--aead-op <mode>
Set AEAD operation mode, where mode is one of the following:
encrypt decrypt
--aead-key-sz <n>

Set the size of AEAD key.
--aead-iv-sz <n>

Set the size of AEAD iv.
--aead-aad-sz <n>

Set the size of AEAD aad.
--digest-sz <n>

Set the size of digest.
--desc-nb <n>

Set number of descriptors for each crypto device.
--pmd-cyclecount-delay-ms <n>

Add a delay (in milliseconds) between enqueue and dequeue in pmd-cyclecount benchmarking mode (useful when benchmarking hardware acceleration).
--csv-friendly

Enable test result output CSV friendly rather than human friendly.

6.3.3. Test Vector File

The test vector file is a text file contain information about test vectors. The file is made of the sections. The first section doesn’t have header. It contain global information used in each test variant vectors - typically information about plaintext, ciphertext, cipher key, auth key, initial vector. All other sections begin header. The sections contain particular information typically digest.

Format of the file:

Each line beginning with sign ‘#’ contain comment and it is ignored by parser:

# <comment>

Header line is just name in square bracket:

[<section name>]

Data line contain information token then sign ‘=’ and a string of bytes in C byte array format:

<token> = <C byte array>

Tokens list:

plaintext

Original plaintext to be encrypted.
ciphertext

Encrypted plaintext string.
cipher_key

Key used in cipher operation.
auth_key

Key used in auth operation.
cipher_iv

Cipher Initial Vector.
auth_iv

Auth Initial Vector.
aad

Additional data.
digest

Digest string.

6.4. Examples

Call application for performance throughput test of single Aesni MB PMD for cipher encryption aes-cbc and auth generation sha1-hmac, one million operations, burst size 32, packet size 64:

dpdk-test-crypto-perf -l 6-7 --vdev crypto_aesni_mb -w 0000:00:00.0 --
--ptest throughput --devtype crypto_aesni_mb --optype cipher-then-auth
--cipher-algo aes-cbc --cipher-op encrypt --cipher-key-sz 16 --auth-algo
sha1-hmac --auth-op generate --auth-key-sz 64 --digest-sz 12
--total-ops 10000000 --burst-sz 32 --buffer-sz 64

Call application for performance latency test of two Aesni MB PMD executed on two cores for cipher encryption aes-cbc, ten operations in silent mode:

dpdk-test-crypto-perf -l 4-7 --vdev crypto_aesni_mb1
--vdev crypto_aesni_mb2 -w 0000:00:00.0 -- --devtype crypto_aesni_mb
--cipher-algo aes-cbc --cipher-key-sz 16 --cipher-iv-sz 16
--cipher-op encrypt --optype cipher-only --silent
--ptest latency --total-ops 10

Call application for verification test of single open ssl PMD for cipher encryption aes-gcm and auth generation aes-gcm,ten operations in silent mode, test vector provide in file “test_aes_gcm.data” with packet verification:

dpdk-test-crypto-perf -l 4-7 --vdev crypto_openssl -w 0000:00:00.0 --
--devtype crypto_openssl --aead-algo aes-gcm --aead-key-sz 16
--aead-iv-sz 16 --aead-op encrypt --aead-aad-sz 16 --digest-sz 16
--optype aead --silent --ptest verify --total-ops 10
--test-file test_aes_gcm.data

Test vector file for cipher algorithm aes cbc 256 with authorization sha:

# Global Section
plaintext =
0xff, 0xca, 0xfb, 0xf1, 0x38, 0x20, 0x2f, 0x7b, 0x24, 0x98, 0x26, 0x7d, 0x1d, 0x9f, 0xb3, 0x93,
0xd9, 0xef, 0xbd, 0xad, 0x4e, 0x40, 0xbd, 0x60, 0xe9, 0x48, 0x59, 0x90, 0x67, 0xd7, 0x2b, 0x7b,
0x8a, 0xe0, 0x4d, 0xb0, 0x70, 0x38, 0xcc, 0x48, 0x61, 0x7d, 0xee, 0xd6, 0x35, 0x49, 0xae, 0xb4,
0xaf, 0x6b, 0xdd, 0xe6, 0x21, 0xc0, 0x60, 0xce, 0x0a, 0xf4, 0x1c, 0x2e, 0x1c, 0x8d, 0xe8, 0x7b
ciphertext =
0x77, 0xF9, 0xF7, 0x7A, 0xA3, 0xCB, 0x68, 0x1A, 0x11, 0x70, 0xD8, 0x7A, 0xB6, 0xE2, 0x37, 0x7E,
0xD1, 0x57, 0x1C, 0x8E, 0x85, 0xD8, 0x08, 0xBF, 0x57, 0x1F, 0x21, 0x6C, 0xAD, 0xAD, 0x47, 0x1E,
0x0D, 0x6B, 0x79, 0x39, 0x15, 0x4E, 0x5B, 0x59, 0x2D, 0x76, 0x87, 0xA6, 0xD6, 0x47, 0x8F, 0x82,
0xB8, 0x51, 0x91, 0x32, 0x60, 0xCB, 0x97, 0xDE, 0xBE, 0xF0, 0xAD, 0xFC, 0x23, 0x2E, 0x22, 0x02
cipher_key =
0xE4, 0x23, 0x33, 0x8A, 0x35, 0x64, 0x61, 0xE2, 0x49, 0x03, 0xDD, 0xC6, 0xB8, 0xCA, 0x55, 0x7A,
0xd0, 0xe7, 0x4b, 0xfb, 0x5d, 0xe5, 0x0c, 0xe7, 0x6f, 0x21, 0xb5, 0x52, 0x2a, 0xbb, 0xc7, 0xf7
auth_key =
0xaf, 0x96, 0x42, 0xf1, 0x8c, 0x50, 0xdc, 0x67, 0x1a, 0x43, 0x47, 0x62, 0xc7, 0x04, 0xab, 0x05,
0xf5, 0x0c, 0xe7, 0xa2, 0xa6, 0x23, 0xd5, 0x3d, 0x95, 0xd8, 0xcd, 0x86, 0x79, 0xf5, 0x01, 0x47,
0x4f, 0xf9, 0x1d, 0x9d, 0x36, 0xf7, 0x68, 0x1a, 0x64, 0x44, 0x58, 0x5d, 0xe5, 0x81, 0x15, 0x2a,
0x41, 0xe4, 0x0e, 0xaa, 0x1f, 0x04, 0x21, 0xff, 0x2c, 0xf3, 0x73, 0x2b, 0x48, 0x1e, 0xd2, 0xf7
cipher_iv =
0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F
# Section sha 1 hmac buff 32
[sha1_hmac_buff_32]
digest =
0x36, 0xCA, 0x49, 0x6A, 0xE3, 0x54, 0xD8, 0x4F, 0x0B, 0x76, 0xD8, 0xAA, 0x78, 0xEB, 0x9D, 0x65,
0x2C, 0xCA, 0x1F, 0x97
# Section sha 256 hmac buff 32
[sha256_hmac_buff_32]
digest =
0x1C, 0xB2, 0x3D, 0xD1, 0xF9, 0xC7, 0x6C, 0x49, 0x2E, 0xDA, 0x94, 0x8B, 0xF1, 0xCF, 0x96, 0x43,
0x67, 0x50, 0x39, 0x76, 0xB5, 0xA1, 0xCE, 0xA1, 0xD7, 0x77, 0x10, 0x07, 0x43, 0x37, 0x05, 0xB4