/* SPDX-License-Identifier: BSD-3-Clause * Copyright(c) 2016-2017 Intel Corporation */ #include #include #include #include #include "null_crypto_pmd_private.h" static uint8_t cryptodev_driver_id; /** 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 -EINVAL; } 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 -ENOTSUP; } /** 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; /* Free session if a session-less crypto op. */ if (op->sess_type == RTE_CRYPTO_OP_SESSIONLESS) { memset(op->sym->session, 0, sizeof(struct null_crypto_session)); rte_cryptodev_sym_session_free(op->sym->session); op->sym->session = NULL; } /* * 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_op *op) { struct null_crypto_session *sess = NULL; struct rte_crypto_sym_op *sym_op = op->sym; if (op->sess_type == RTE_CRYPTO_OP_WITH_SESSION) { if (likely(sym_op->session != NULL)) sess = (struct null_crypto_session *) get_sym_session_private_data( sym_op->session, cryptodev_driver_id); } else { void *_sess = NULL; void *_sess_private_data = NULL; if (rte_mempool_get(qp->sess_mp, (void **)&_sess)) return NULL; if (rte_mempool_get(qp->sess_mp_priv, (void **)&_sess_private_data)) return NULL; sess = (struct null_crypto_session *)_sess_private_data; if (unlikely(null_crypto_set_session_parameters(sess, sym_op->xform) != 0)) { rte_mempool_put(qp->sess_mp, _sess); rte_mempool_put(qp->sess_mp_priv, _sess_private_data); sess = NULL; } sym_op->session = (struct rte_cryptodev_sym_session *)_sess; set_sym_session_private_data(op->sym->session, cryptodev_driver_id, _sess_private_data); } 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]); 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, NULL); qp->qp_stats.dequeued_count += nb_dequeued; return nb_dequeued; } /** Create crypto device */ static int cryptodev_null_create(const char *name, struct rte_vdev_device *vdev, struct rte_cryptodev_pmd_init_params *init_params) { struct rte_cryptodev *dev; struct null_crypto_private *internals; dev = rte_cryptodev_pmd_create(name, &vdev->device, init_params); if (dev == NULL) { NULL_LOG(ERR, "failed to create cryptodev vdev"); return -EFAULT; } dev->driver_id = cryptodev_driver_id; 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 | RTE_CRYPTODEV_FF_IN_PLACE_SGL | RTE_CRYPTODEV_FF_SYM_SESSIONLESS; internals = dev->data->dev_private; internals->max_nb_qpairs = init_params->max_nb_queue_pairs; return 0; } /** Initialise null crypto device */ static int cryptodev_null_probe(struct rte_vdev_device *dev) { struct rte_cryptodev_pmd_init_params init_params = { "", sizeof(struct null_crypto_private), rte_socket_id(), RTE_CRYPTODEV_PMD_DEFAULT_MAX_NB_QUEUE_PAIRS }; const char *name, *args; int retval; name = rte_vdev_device_name(dev); if (name == NULL) return -EINVAL; args = rte_vdev_device_args(dev); retval = rte_cryptodev_pmd_parse_input_args(&init_params, args); if (retval) { NULL_LOG(ERR, "Failed to parse initialisation arguments[%s]", args); return -EINVAL; } return cryptodev_null_create(name, dev, &init_params); } static int cryptodev_null_remove_dev(struct rte_vdev_device *vdev) { struct rte_cryptodev *cryptodev; const char *name; name = rte_vdev_device_name(vdev); if (name == NULL) return -EINVAL; cryptodev = rte_cryptodev_pmd_get_named_dev(name); if (cryptodev == NULL) return -ENODEV; return rte_cryptodev_pmd_destroy(cryptodev); } static struct rte_vdev_driver cryptodev_null_pmd_drv = { .probe = cryptodev_null_probe, .remove = cryptodev_null_remove_dev, }; static struct cryptodev_driver null_crypto_drv; RTE_PMD_REGISTER_VDEV(CRYPTODEV_NAME_NULL_PMD, cryptodev_null_pmd_drv); RTE_PMD_REGISTER_ALIAS(CRYPTODEV_NAME_NULL_PMD, cryptodev_null_pmd); RTE_PMD_REGISTER_PARAM_STRING(CRYPTODEV_NAME_NULL_PMD, "max_nb_queue_pairs= " "socket_id="); RTE_PMD_REGISTER_CRYPTO_DRIVER(null_crypto_drv, cryptodev_null_pmd_drv.driver, cryptodev_driver_id); RTE_LOG_REGISTER(null_logtype_driver, pmd.crypto.null, INFO);