summaryrefslogtreecommitdiff
path: root/doc/guides/cryptodevs/aesni_mb.rst
blob: 1eff2b07363dbe7c66e11745e1129899dcfaa58d (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
..  SPDX-License-Identifier: BSD-3-Clause
    Copyright(c) 2015-2018 Intel Corporation.

AESN-NI Multi Buffer Crypto Poll Mode Driver
============================================


The AESNI MB PMD (**librte_pmd_aesni_mb**) provides poll mode crypto driver
support for utilizing Intel multi buffer library, see the white paper
`Fast Multi-buffer IPsec Implementations on IntelĀ® Architecture Processors
<https://www.intel.com/content/dam/www/public/us/en/documents/white-papers/fast-multi-buffer-ipsec-implementations-ia-processors-paper.pdf>`_.

The AES-NI MB PMD has current only been tested on Fedora 21 64-bit with gcc.

Features
--------

AESNI MB PMD has support for:

Cipher algorithms:

* RTE_CRYPTO_CIPHER_AES128_CBC
* RTE_CRYPTO_CIPHER_AES192_CBC
* RTE_CRYPTO_CIPHER_AES256_CBC
* RTE_CRYPTO_CIPHER_AES128_CTR
* RTE_CRYPTO_CIPHER_AES192_CTR
* RTE_CRYPTO_CIPHER_AES256_CTR
* RTE_CRYPTO_CIPHER_AES_DOCSISBPI
* RTE_CRYPTO_CIPHER_DES_CBC
* RTE_CRYPTO_CIPHER_3DES_CBC
* RTE_CRYPTO_CIPHER_DES_DOCSISBPI

Hash algorithms:

* RTE_CRYPTO_HASH_MD5_HMAC
* RTE_CRYPTO_HASH_SHA1_HMAC
* RTE_CRYPTO_HASH_SHA224_HMAC
* RTE_CRYPTO_HASH_SHA256_HMAC
* RTE_CRYPTO_HASH_SHA384_HMAC
* RTE_CRYPTO_HASH_SHA512_HMAC
* RTE_CRYPTO_HASH_AES_XCBC_HMAC
* RTE_CRYPTO_HASH_AES_CMAC
* RTE_CRYPTO_HASH_AES_GMAC
* RTE_CRYPTO_HASH_SHA1
* RTE_CRYPTO_HASH_SHA224
* RTE_CRYPTO_HASH_SHA256
* RTE_CRYPTO_HASH_SHA384
* RTE_CRYPTO_HASH_SHA512

AEAD algorithms:

* RTE_CRYPTO_AEAD_AES_CCM
* RTE_CRYPTO_AEAD_AES_GCM

Limitations
-----------

* Chained mbufs are not supported.


Installation
------------

To build DPDK with the AESNI_MB_PMD the user is required to download the multi-buffer
library from `here <https://github.com/01org/intel-ipsec-mb>`_
and compile it on their user system before building DPDK.
The latest version of the library supported by this PMD is v0.52, which
can be downloaded from `<https://github.com/01org/intel-ipsec-mb/archive/v0.52.zip>`.

.. code-block:: console

    make
    make install

As a reference, the following table shows a mapping between the past DPDK versions
and the Multi-Buffer library version supported by them:

.. _table_aesni_mb_versions:

.. table:: DPDK and Multi-Buffer library version compatibility

   ==============  ============================
   DPDK version    Multi-buffer library version
   ==============  ============================
   2.2 - 16.11     0.43 - 0.44
   17.02           0.44
   17.05 - 17.08   0.45 - 0.48
   17.11           0.47 - 0.48
   18.02           0.48
   18.05 - 19.02   0.49 - 0.52
   19.05+          0.52+
   ==============  ============================


Initialization
--------------

In order to enable this virtual crypto PMD, user must:

* Build the multi buffer library (explained in Installation section).

* Set CONFIG_RTE_LIBRTE_PMD_AESNI_MB=y in config/common_base.

To use the PMD in an application, user must:

* Call rte_vdev_init("crypto_aesni_mb") within the application.

* Use --vdev="crypto_aesni_mb" in the EAL options, which will call rte_vdev_init() internally.

The following parameters (all optional) can be provided in the previous two calls:

* socket_id: Specify the socket where the memory for the device is going to be allocated
  (by default, socket_id will be the socket where the core that is creating the PMD is running on).

* max_nb_queue_pairs: Specify the maximum number of queue pairs in the device (8 by default).

* max_nb_sessions: Specify the maximum number of sessions that can be created (2048 by default).

Example:

.. code-block:: console

    ./l2fwd-crypto -l 1 -n 4 --vdev="crypto_aesni_mb,socket_id=0,max_nb_sessions=128" \
    -- -p 1 --cdev SW --chain CIPHER_HASH --cipher_algo "aes-cbc" --auth_algo "sha1-hmac"

Extra notes
-----------

For AES Counter mode (AES-CTR), the library supports two different sizes for Initialization
Vector (IV):

* 12 bytes: used mainly for IPsec, as it requires 12 bytes from the user, which internally
  are appended the counter block (4 bytes), which is set to 1 for the first block
  (no padding required from the user)

* 16 bytes: when passing 16 bytes, the library will take them and use the last 4 bytes
  as the initial counter block for the first block.