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30 AESN-NI Multi Buffer Crypto Poll Mode Driver
31 ============================================
34 The AESNI MB PMD (**librte_pmd_aesni_mb**) provides poll mode crypto driver
35 support for utilizing Intel multi buffer library, see the white paper
36 `Fast Multi-buffer IPsec Implementations on IntelĀ® Architecture Processors
37 <https://www-ssl.intel.com/content/www/us/en/intelligent-systems/intel-technology/fast-multi-buffer-ipsec-implementations-ia-processors-paper.html?wapkw=multi+buffer>`_.
39 The AES-NI MB PMD has current only been tested on Fedora 21 64-bit with gcc.
44 AESNI MB PMD has support for:
48 * RTE_CRYPTO_CIPHER_AES128_CBC
49 * RTE_CRYPTO_CIPHER_AES192_CBC
50 * RTE_CRYPTO_CIPHER_AES256_CBC
51 * RTE_CRYPTO_CIPHER_AES128_CTR
52 * RTE_CRYPTO_CIPHER_AES192_CTR
53 * RTE_CRYPTO_CIPHER_AES256_CTR
54 * RTE_CRYPTO_CIPHER_AES_DOCSISBPI
58 * RTE_CRYPTO_HASH_MD5_HMAC
59 * RTE_CRYPTO_HASH_SHA1_HMAC
60 * RTE_CRYPTO_HASH_SHA224_HMAC
61 * RTE_CRYPTO_HASH_SHA256_HMAC
62 * RTE_CRYPTO_HASH_SHA384_HMAC
63 * RTE_CRYPTO_HASH_SHA512_HMAC
64 * RTE_CRYPTO_HASH_AES_XCBC_HMAC
69 * Chained mbufs are not supported.
70 * Only in-place is currently supported (destination address is the same as source address).
76 To build DPDK with the AESNI_MB_PMD the user is required to download the multi-buffer
77 library from `here <https://github.com/01org/intel-ipsec-mb>`_
78 and compile it on their user system before building DPDK.
79 The latest version of the library supported by this PMD is v0.46, which
80 can be downloaded in `<https://github.com/01org/intel-ipsec-mb/archive/v0.46.zip>`_.
82 .. code-block:: console
86 As a reference, the following table shows a mapping between the past DPDK versions
87 and the Multi-Buffer library version supported by them:
89 .. _table_aesni_mb_versions:
91 .. table:: DPDK and Multi-Buffer library version compatibility
93 ============= ============================
94 DPDK version Multi-buffer library version
95 ============= ============================
96 2.2 - 16.11 0.43 - 0.44
99 ============= ============================
105 In order to enable this virtual crypto PMD, user must:
107 * Export the environmental variable AESNI_MULTI_BUFFER_LIB_PATH with the path where
108 the library was extracted.
110 * Build the multi buffer library (explained in Installation section).
112 * Set CONFIG_RTE_LIBRTE_PMD_AESNI_MB=y in config/common_base.
114 To use the PMD in an application, user must:
116 * Call rte_vdev_init("crypto_aesni_mb") within the application.
118 * Use --vdev="crypto_aesni_mb" in the EAL options, which will call rte_vdev_init() internally.
120 The following parameters (all optional) can be provided in the previous two calls:
122 * socket_id: Specify the socket where the memory for the device is going to be allocated
123 (by default, socket_id will be the socket where the core that is creating the PMD is running on).
125 * max_nb_queue_pairs: Specify the maximum number of queue pairs in the device (8 by default).
127 * max_nb_sessions: Specify the maximum number of sessions that can be created (2048 by default).
131 .. code-block:: console
133 ./l2fwd-crypto -l 1 -n 4 --vdev="crypto_aesni_mb,socket_id=0,max_nb_sessions=128" \
134 -- -p 1 --cdev SW --chain CIPHER_HASH --cipher_algo "aes-cbc" --auth_algo "sha1-hmac"
139 For AES Counter mode (AES-CTR), the library supports two different sizes for Initialization
142 * 12 bytes: used mainly for IPSec, as it requires 12 bytes from the user, which internally
143 are appended the counter block (4 bytes), which is set to 1 for the first block
144 (no padding required from the user)
146 * 16 bytes: when passing 16 bytes, the library will take them and use the last 4 bytes
147 as the initial counter block for the first block.