QAT documentation consists of three parts:
-* Details of the symmetric crypto service below.
+* Details of the symmetric and asymmetric crypto services below.
* Details of the `compression service <http://doc.dpdk.org/guides/compressdevs/qat_comp.html>`_
in the compressdev drivers section.
* Details of building the common QAT infrastructure and the PMDs to support the
Symmetric Crypto Service on QAT
-------------------------------
-The QAT crypto PMD provides poll mode crypto driver support for the following
-hardware accelerator devices:
+The QAT symmetric crypto PMD (hereafter referred to as `QAT SYM [PMD]`) provides
+poll mode crypto driver support for the following hardware accelerator devices:
* ``Intel QuickAssist Technology DH895xCC``
* ``Intel QuickAssist Technology C62x``
Features
~~~~~~~~
-The QAT PMD has support for:
+The QAT SYM PMD has support for:
Cipher algorithms:
Asymmetric Crypto Service on QAT
--------------------------------
-The QAT Asym PMD has support for:
+The QAT asymmetric crypto PMD (hereafter referred to as `QAT ASYM [PMD]`) provides
+poll mode crypto driver support for the following hardware accelerator devices:
-* ``Modular exponentiation``
-* ``Modular multiplicative inverse``
+* ``Intel QuickAssist Technology DH895xCC``
+* ``Intel QuickAssist Technology C62x``
+* ``Intel QuickAssist Technology C3xxx``
+* ``Intel QuickAssist Technology D15xx``
+* ``Intel QuickAssist Technology C4xxx``
+
+The QAT ASYM PMD has support for:
+
+* ``RTE_CRYPTO_ASYM_XFORM_MODEX``
+* ``RTE_CRYPTO_ASYM_XFORM_MODINV``
Limitations
~~~~~~~~~~~
+* Big integers longer than 4096 bits are not supported.
+* Queue pairs are not thread-safe (that is, within a single queue pair, RX and TX from different lcores is not supported).
+
.. _building_qat:
Building PMDs on QAT
cd to the top-level DPDK directory
make defconfig
sed -i 's,\(CONFIG_RTE_LIBRTE_PMD_QAT_SYM\)=n,\1=y,' build/.config
+ or/and
+ sed -i 's,\(CONFIG_RTE_LIBRTE_PMD_QAT_ASYM\)=n,\1=y,' build/.config
make
Quick instructions for QAT compressdev PMD are as follows:
CONFIG_RTE_LIBRTE_PMD_QAT=y
CONFIG_RTE_LIBRTE_PMD_QAT_SYM=n
+ CONFIG_RTE_LIBRTE_PMD_QAT_ASYM=n
CONFIG_RTE_PMD_QAT_MAX_PCI_DEVICES=48
CONFIG_RTE_PMD_QAT_COMP_IM_BUFFER_SIZE=65536
CONFIG_RTE_LIBRTE_PMD_QAT must be enabled for any QAT PMD to be built.
-The QAT cryptodev PMD has an external dependency on libcrypto, so is not
-built by default. CONFIG_RTE_LIBRTE_PMD_QAT_SYM should be enabled to build it.
+Both QAT SYM PMD and QAT ASYM PMD have an external dependency on libcrypto, so are not
+built by default. CONFIG_RTE_LIBRTE_PMD_QAT_SYM/ASYM should be enabled to build them.
The QAT compressdev PMD has no external dependencies, so needs no configuration
options and is built by default.
The number of VFs per PF varies - see table below. If multiple QAT packages are
installed on a platform then CONFIG_RTE_PMD_QAT_MAX_PCI_DEVICES should be
adjusted to the number of VFs which the QAT common code will need to handle.
-Note, there are separate config items for max cryptodevs CONFIG_RTE_CRYPTO_MAX_DEVS
-and max compressdevs CONFIG_RTE_COMPRESS_MAX_DEVS, if necessary these should be
-adjusted to handle the total of QAT and other devices which the process will use.
+
+.. Note::
+
+ There are separate config items (not QAT-specific) for max cryptodevs
+ CONFIG_RTE_CRYPTO_MAX_DEVS and max compressdevs CONFIG_RTE_COMPRESS_MAX_DEVS,
+ if necessary these should be adjusted to handle the total of QAT and other
+ devices which the process will use. In particular for crypto, where each
+ QAT VF may expose two crypto devices, sym and asym, it may happen that the
+ number of devices will be bigger than MAX_DEVS and the process will show an error
+ during PMD initialisation. To avoid this problem CONFIG_RTE_CRYPTO_MAX_DEVS may be
+ increased or -w, pci-whitelist domain:bus:devid:func option may be used.
+
QAT compression PMD needs intermediate buffers to support Deflate compression
with Dynamic Huffman encoding. CONFIG_RTE_PMD_QAT_COMP_IM_BUFFER_SIZE
Device and driver naming
~~~~~~~~~~~~~~~~~~~~~~~~
-* The qat cryptodev driver name is "crypto_qat".
- The "rte_cryptodev_devices_get()" returns the devices exposed by this driver.
+* The qat cryptodev symmetric crypto driver name is "crypto_qat".
+* The qat cryptodev asymmetric crypto driver name is "crypto_qat_asym".
-* Each qat crypto device has a unique name, in format
+The "rte_cryptodev_devices_get()" returns the devices exposed by either of these drivers.
+
+* Each qat sym crypto device has a unique name, in format
"<pci bdf>_<service>", e.g. "0000:41:01.0_qat_sym".
+* Each qat asym crypto device has a unique name, in format
+ "<pci bdf>_<service>", e.g. "0000:41:01.0_qat_asym".
This name can be passed to "rte_cryptodev_get_dev_id()" to get the device_id.
.. Note::
- The qat crypto driver name is passed to the dpdk-test-crypto-perf tool in the "-devtype" parameter.
+ The cryptodev driver name is passed to the dpdk-test-crypto-perf tool in the "-devtype" parameter.
The qat crypto device name is in the format of the slave parameter passed to the crypto scheduler.
DPDK applications.
Each QuickAssist PF device exposes a number of VF devices. Each VF device can
-enable one cryptodev PMD and/or one compressdev PMD.
+enable one symmetric cryptodev PMD and/or one asymmetric cryptodev PMD and/or
+one compressdev PMD.
These QAT PMDs share the same underlying device and pci-mgmt code, but are
enumerated independently on their respective APIs and appear as independent
devices to applications.
+=====+=====+=====+=====+==========+===============+===============+============+========+======+========+========+
| Yes | No | No | 1 | DH895xCC | linux/4.4+ | qat_dh895xcc | dh895xcc | 435 | 1 | 443 | 32 |
+-----+-----+-----+-----+----------+---------------+---------------+------------+--------+------+--------+--------+
- | Yes | No | No | " | " | 01.org/4.2.0+ | " | " | " | " | " | " |
+ | Yes | Yes | No | " | " | 01.org/4.2.0+ | " | " | " | " | " | " |
+-----+-----+-----+-----+----------+---------------+---------------+------------+--------+------+--------+--------+
- | Yes | No | Yes | " | " | 01.org/4.3.0+ | " | " | " | " | " | " |
+ | Yes | Yes | Yes | " | " | 01.org/4.3.0+ | " | " | " | " | " | " |
+-----+-----+-----+-----+----------+---------------+---------------+------------+--------+------+--------+--------+
| Yes | No | No | 2 | C62x | linux/4.5+ | qat_c62x | c6xx | 37c8 | 3 | 37c9 | 16 |
+-----+-----+-----+-----+----------+---------------+---------------+------------+--------+------+--------+--------+
- | Yes | No | Yes | " | " | 01.org/4.2.0+ | " | " | " | " | " | " |
+ | Yes | Yes | Yes | " | " | 01.org/4.2.0+ | " | " | " | " | " | " |
+-----+-----+-----+-----+----------+---------------+---------------+------------+--------+------+--------+--------+
| Yes | No | No | 2 | C3xxx | linux/4.5+ | qat_c3xxx | c3xxx | 19e2 | 1 | 19e3 | 16 |
+-----+-----+-----+-----+----------+---------------+---------------+------------+--------+------+--------+--------+
- | Yes | No | Yes | " | " | 01.org/4.2.0+ | " | " | " | " | " | " |
+ | Yes | Yes | Yes | " | " | 01.org/4.2.0+ | " | " | " | " | " | " |
+-----+-----+-----+-----+----------+---------------+---------------+------------+--------+------+--------+--------+
| Yes | No | No | 2 | D15xx | p | qat_d15xx | d15xx | 6f54 | 1 | 6f55 | 16 |
+-----+-----+-----+-----+----------+---------------+---------------+------------+--------+------+--------+--------+
Testing
~~~~~~~
-QAT crypto PMD can be tested by running the test application::
+QAT SYM crypto PMD can be tested by running the test application::
make defconfig
make -j
./test -l1 -n1 -w <your qat bdf>
RTE>>cryptodev_qat_autotest
+QAT ASYM crypto PMD can be tested by running the test application::
+
+ make defconfig
+ make -j
+ cd ./build/app
+ ./test -l1 -n1 -w <your qat bdf>
+ RTE>>cryptodev_qat_asym_autotest
+
QAT compression PMD can be tested by running the test application::
make defconfig
git.droids-corp.org / dpdk.git / commitdiff