From 97f17497d162afdb82c8704bf097f0fee3724b2e Mon Sep 17 00:00:00 2001 From: "C.J. Collier" Date: Tue, 14 Jun 2016 07:50:17 -0700 Subject: Imported Upstream version 16.04 Change-Id: I77eadcd8538a9122e4773cbe55b24033dc451757 Signed-off-by: C.J. Collier --- drivers/crypto/null/null_crypto_pmd.c | 278 ++++++++++++++++++++++++++++++++++ 1 file changed, 278 insertions(+) create mode 100644 drivers/crypto/null/null_crypto_pmd.c (limited to 'drivers/crypto/null/null_crypto_pmd.c') diff --git a/drivers/crypto/null/null_crypto_pmd.c b/drivers/crypto/null/null_crypto_pmd.c new file mode 100644 index 00000000..bdaf13ca --- /dev/null +++ b/drivers/crypto/null/null_crypto_pmd.c @@ -0,0 +1,278 @@ +/*- + * BSD LICENSE + * + * Copyright(c) 2016 Intel Corporation. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Intel Corporation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include +#include +#include +#include +#include + +#include "null_crypto_pmd_private.h" + +/** + * Global static parameter used to create a unique name for each crypto device. + */ +static unsigned unique_name_id; + +static inline int +create_unique_device_name(char *name, size_t size) +{ + int ret; + + if (name == NULL) + return -EINVAL; + + ret = snprintf(name, size, "%s_%u", CRYPTODEV_NAME_NULL_PMD, + unique_name_id++); + if (ret < 0) + return ret; + return 0; +} + + +/** verify and set session parameters */ +int +null_crypto_set_session_parameters( + struct null_crypto_session *sess __rte_unused, + const struct rte_crypto_sym_xform *xform) +{ + if (xform == NULL) { + return -1; + } else if (xform->type == RTE_CRYPTO_SYM_XFORM_AUTH && + xform->next == NULL) { + /* Authentication Only */ + if (xform->auth.algo == RTE_CRYPTO_AUTH_NULL) + return 0; + } else if (xform->type == RTE_CRYPTO_SYM_XFORM_AUTH && + xform->next->type == RTE_CRYPTO_SYM_XFORM_CIPHER) { + /* Authentication then Cipher */ + if (xform->auth.algo == RTE_CRYPTO_AUTH_NULL && + xform->next->cipher.algo == RTE_CRYPTO_CIPHER_NULL) + return 0; + } else if (xform->type == RTE_CRYPTO_SYM_XFORM_CIPHER && + xform->next == NULL) { + /* Cipher Only */ + if (xform->cipher.algo == RTE_CRYPTO_CIPHER_NULL) + return 0; + } else if (xform->type == RTE_CRYPTO_SYM_XFORM_CIPHER && + xform->next->type == RTE_CRYPTO_SYM_XFORM_AUTH) { + /* Cipher then Authentication */ + if (xform->cipher.algo == RTE_CRYPTO_CIPHER_NULL && + xform->next->auth.algo == RTE_CRYPTO_AUTH_NULL) + return 0; + } + + return -1; +} + +/** Process crypto operation for mbuf */ +static int +process_op(const struct null_crypto_qp *qp, struct rte_crypto_op *op, + struct null_crypto_session *sess __rte_unused) +{ + /* set status as successful by default */ + op->status = RTE_CRYPTO_OP_STATUS_SUCCESS; + + /* + * if crypto session and operation are valid just enqueue the packet + * in the processed ring + */ + return rte_ring_enqueue(qp->processed_pkts, (void *)op); +} + +static struct null_crypto_session * +get_session(struct null_crypto_qp *qp, struct rte_crypto_sym_op *op) +{ + struct null_crypto_session *sess; + + if (op->sess_type == RTE_CRYPTO_SYM_OP_WITH_SESSION) { + if (unlikely(op->session == NULL || + op->session->dev_type != RTE_CRYPTODEV_NULL_PMD)) + return NULL; + + sess = (struct null_crypto_session *)op->session->_private; + } else { + struct rte_cryptodev_session *c_sess = NULL; + + if (rte_mempool_get(qp->sess_mp, (void **)&c_sess)) + return NULL; + + sess = (struct null_crypto_session *)c_sess->_private; + + if (null_crypto_set_session_parameters(sess, op->xform) != 0) + return NULL; + } + + return sess; +} + +/** Enqueue burst */ +static uint16_t +null_crypto_pmd_enqueue_burst(void *queue_pair, struct rte_crypto_op **ops, + uint16_t nb_ops) +{ + struct null_crypto_session *sess; + struct null_crypto_qp *qp = queue_pair; + + int i, retval; + + for (i = 0; i < nb_ops; i++) { + sess = get_session(qp, ops[i]->sym); + if (unlikely(sess == NULL)) + goto enqueue_err; + + retval = process_op(qp, ops[i], sess); + if (unlikely(retval < 0)) + goto enqueue_err; + } + + qp->qp_stats.enqueued_count += i; + return i; + +enqueue_err: + if (ops[i]) + ops[i]->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS; + + qp->qp_stats.enqueue_err_count++; + return i; +} + +/** Dequeue burst */ +static uint16_t +null_crypto_pmd_dequeue_burst(void *queue_pair, struct rte_crypto_op **ops, + uint16_t nb_ops) +{ + struct null_crypto_qp *qp = queue_pair; + + unsigned nb_dequeued; + + nb_dequeued = rte_ring_dequeue_burst(qp->processed_pkts, + (void **)ops, nb_ops); + qp->qp_stats.dequeued_count += nb_dequeued; + + return nb_dequeued; +} + +static int cryptodev_null_uninit(const char *name); + +/** Create crypto device */ +static int +cryptodev_null_create(const char *name, + struct rte_crypto_vdev_init_params *init_params) +{ + struct rte_cryptodev *dev; + char crypto_dev_name[RTE_CRYPTODEV_NAME_MAX_LEN]; + struct null_crypto_private *internals; + + /* create a unique device name */ + if (create_unique_device_name(crypto_dev_name, + RTE_CRYPTODEV_NAME_MAX_LEN) != 0) { + NULL_CRYPTO_LOG_ERR("failed to create unique cryptodev name"); + return -EINVAL; + } + + dev = rte_cryptodev_pmd_virtual_dev_init(crypto_dev_name, + sizeof(struct null_crypto_private), + init_params->socket_id); + if (dev == NULL) { + NULL_CRYPTO_LOG_ERR("failed to create cryptodev vdev"); + goto init_error; + } + + dev->dev_type = RTE_CRYPTODEV_NULL_PMD; + dev->dev_ops = null_crypto_pmd_ops; + + /* register rx/tx burst functions for data path */ + dev->dequeue_burst = null_crypto_pmd_dequeue_burst; + dev->enqueue_burst = null_crypto_pmd_enqueue_burst; + + dev->feature_flags = RTE_CRYPTODEV_FF_SYMMETRIC_CRYPTO | + RTE_CRYPTODEV_FF_SYM_OPERATION_CHAINING; + + internals = dev->data->dev_private; + + internals->max_nb_qpairs = init_params->max_nb_queue_pairs; + internals->max_nb_sessions = init_params->max_nb_sessions; + + return 0; + +init_error: + NULL_CRYPTO_LOG_ERR("driver %s: cryptodev_null_create failed", name); + cryptodev_null_uninit(crypto_dev_name); + + return -EFAULT; +} + +/** Initialise null crypto device */ +static int +cryptodev_null_init(const char *name, + const char *input_args) +{ + struct rte_crypto_vdev_init_params init_params = { + RTE_CRYPTODEV_VDEV_DEFAULT_MAX_NB_QUEUE_PAIRS, + RTE_CRYPTODEV_VDEV_DEFAULT_MAX_NB_SESSIONS, + rte_socket_id() + }; + + rte_cryptodev_parse_vdev_init_params(&init_params, input_args); + + RTE_LOG(INFO, PMD, "Initialising %s on NUMA node %d\n", name, + init_params.socket_id); + RTE_LOG(INFO, PMD, " Max number of queue pairs = %d\n", + init_params.max_nb_queue_pairs); + RTE_LOG(INFO, PMD, " Max number of sessions = %d\n", + init_params.max_nb_sessions); + + return cryptodev_null_create(name, &init_params); +} + +/** Uninitialise null crypto device */ +static int +cryptodev_null_uninit(const char *name) +{ + if (name == NULL) + return -EINVAL; + + RTE_LOG(INFO, PMD, "Closing null crypto device %s on numa socket %u\n", + name, rte_socket_id()); + + return 0; +} + +static struct rte_driver cryptodev_null_pmd_drv = { + .name = CRYPTODEV_NAME_NULL_PMD, + .type = PMD_VDEV, + .init = cryptodev_null_init, + .uninit = cryptodev_null_uninit +}; + +PMD_REGISTER_DRIVER(cryptodev_null_pmd_drv); -- cgit 1.2.3-korg