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30 AES-NI GCM Crypto Poll Mode Driver
31 ==================================
34 The AES-NI GCM PMD (**librte_pmd_aesni_gcm**) provides poll mode crypto driver
35 support for utilizing Intel multi buffer library (see AES-NI Multi-buffer PMD documentation
36 to learn more about it, including installation).
38 The AES-NI GCM PMD has current only been tested on Fedora 21 64-bit with gcc.
43 AESNI GCM PMD has support for:
47 * RTE_CRYPTO_CIPHER_AES_GCM
49 Authentication algorithms:
51 * RTE_CRYPTO_AUTH_AES_GCM
56 In order to enable this virtual crypto PMD, user must:
58 * Export the environmental variable AESNI_MULTI_BUFFER_LIB_PATH with the path where
59 the library was extracted.
61 * Build the multi buffer library (go to Installation section in AES-NI MB PMD documentation).
63 * Set CONFIG_RTE_LIBRTE_PMD_AESNI_GCM=y in config/common_base.
65 To use the PMD in an application, user must:
67 * Call rte_eal_vdev_init("cryptodev_aesni_gcm_pmd") within the application.
69 * Use --vdev="cryptodev_aesni_gcm_pmd" in the EAL options, which will call rte_eal_vdev_init() internally.
71 The following parameters (all optional) can be provided in the previous two calls:
73 * socket_id: Specify the socket where the memory for the device is going to be allocated
74 (by default, socket_id will be the socket where the core that is creating the PMD is running on).
76 * max_nb_queue_pairs: Specify the maximum number of queue pairs in the device (8 by default).
78 * max_nb_sessions: Specify the maximum number of sessions that can be created (2048 by default).
82 .. code-block:: console
84 ./l2fwd-crypto -c 40 -n 4 --vdev="cryptodev_aesni_gcm_pmd,socket_id=1,max_nb_sessions=128"
89 * Chained mbufs are not supported.
90 * Hash only is not supported.
91 * Cipher only is not supported.
92 * Only in-place is currently supported (destination address is the same as source address).
93 * Only supports session-oriented API implementation (session-less APIs are not supported).
94 * Not performance tuned.