94b0ad8e0a
This patch provides the implementation of a NULL crypto PMD, which supports NULL cipher and NULL authentication operations, which can be chained together as follows: - Authentication Only - Cipher Only - Authentication then Cipher - Cipher then Authentication As this is a NULL operation device the crypto operations which are submitted for processing are not actually modified and are stored in a queue pairs processed packets ring ready for collection when rte_cryptodev_burst_dequeue() is called. The patch also contains the related unit tests function to test the PMDs supported operations. Signed-off-by: Declan Doherty <declan.doherty@intel.com> Acked-by: Deepak Kumar Jain <deepak.k.jain@intel.com>
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2.8 KiB
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73 lines
2.8 KiB
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.. BSD LICENSE
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Copyright(c) 2016 Intel Corporation. All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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* Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in
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the documentation and/or other materials provided with the
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distribution.
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* Neither the name of Intel Corporation nor the names of its
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contributors may be used to endorse or promote products derived
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from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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Null Crytpo Poll Mode Driver
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============================
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The Null Crypto PMD (**librte_pmd_null_crypto**) provides a crypto poll mode
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driver which provides a minimal implementation for a software crypto device. As
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a null device it does not modify the data in the mbuf on which the crypto
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operation is to operate and it only has support for a single cipher and
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authentication algorithm.
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When a burst of mbufs is submitted to a Null Crypto PMD for processing then
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each mbuf in the burst will be enqueued in an internal buffer for collection on
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a dequeue call as long as the mbuf has a valid rte_mbuf_offload operation with
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a valid rte_cryptodev_session or rte_crypto_xform chain of operations.
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Features
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--------
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Modes:
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* RTE_CRYPTO_XFORM_CIPHER ONLY
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* RTE_CRYPTO_XFORM_AUTH ONLY
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* RTE_CRYPTO_XFORM_CIPHER THEN RTE_CRYPTO_XFORM_AUTH
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* RTE_CRYPTO_XFORM_AUTH THEN RTE_CRYPTO_XFORM_CIPHER
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Cipher algorithms:
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* RTE_CRYPTO_CIPHER_NULL
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Authentication algorithms:
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* RTE_CRYPTO_AUTH_NULL
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Limitations
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-----------
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* Only in-place is currently supported (destination address is the same as
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source address).
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Installation
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------------
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The Null Crypto PMD is enabled and built by default in both the Linux and
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FreeBSD builds.
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