diff options
Diffstat (limited to 'drivers/crypto/kasumi/rte_kasumi_pmd.c')
| -rw-r--r-- | drivers/crypto/kasumi/rte_kasumi_pmd.c | 657 |
1 files changed, 657 insertions, 0 deletions
diff --git a/drivers/crypto/kasumi/rte_kasumi_pmd.c b/drivers/crypto/kasumi/rte_kasumi_pmd.c new file mode 100644 index 00000000..5f8c7a2e --- /dev/null +++ b/drivers/crypto/kasumi/rte_kasumi_pmd.c @@ -0,0 +1,657 @@ +/*- + * 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 <rte_common.h> +#include <rte_config.h> +#include <rte_hexdump.h> +#include <rte_cryptodev.h> +#include <rte_cryptodev_pmd.h> +#include <rte_dev.h> +#include <rte_malloc.h> +#include <rte_cpuflags.h> + +#include "rte_kasumi_pmd_private.h" + +#define KASUMI_KEY_LENGTH 16 +#define KASUMI_IV_LENGTH 8 +#define KASUMI_DIGEST_LENGTH 4 +#define KASUMI_MAX_BURST 4 +#define BYTE_LEN 8 + +/** + * Global static parameter used to create a unique name for each KASUMI + * 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_KASUMI_PMD, + unique_name_id++); + if (ret < 0) + return ret; + return 0; +} + +/** Get xform chain order. */ +static enum kasumi_operation +kasumi_get_mode(const struct rte_crypto_sym_xform *xform) +{ + if (xform == NULL) + return KASUMI_OP_NOT_SUPPORTED; + + if (xform->next) + if (xform->next->next != NULL) + return KASUMI_OP_NOT_SUPPORTED; + + if (xform->type == RTE_CRYPTO_SYM_XFORM_AUTH) { + if (xform->next == NULL) + return KASUMI_OP_ONLY_AUTH; + else if (xform->next->type == RTE_CRYPTO_SYM_XFORM_CIPHER) + return KASUMI_OP_AUTH_CIPHER; + else + return KASUMI_OP_NOT_SUPPORTED; + } + + if (xform->type == RTE_CRYPTO_SYM_XFORM_CIPHER) { + if (xform->next == NULL) + return KASUMI_OP_ONLY_CIPHER; + else if (xform->next->type == RTE_CRYPTO_SYM_XFORM_AUTH) + return KASUMI_OP_CIPHER_AUTH; + else + return KASUMI_OP_NOT_SUPPORTED; + } + + return KASUMI_OP_NOT_SUPPORTED; +} + + +/** Parse crypto xform chain and set private session parameters. */ +int +kasumi_set_session_parameters(struct kasumi_session *sess, + const struct rte_crypto_sym_xform *xform) +{ + const struct rte_crypto_sym_xform *auth_xform = NULL; + const struct rte_crypto_sym_xform *cipher_xform = NULL; + int mode; + + /* Select Crypto operation - hash then cipher / cipher then hash */ + mode = kasumi_get_mode(xform); + + switch (mode) { + case KASUMI_OP_CIPHER_AUTH: + auth_xform = xform->next; + /* Fall-through */ + case KASUMI_OP_ONLY_CIPHER: + cipher_xform = xform; + break; + case KASUMI_OP_AUTH_CIPHER: + cipher_xform = xform->next; + /* Fall-through */ + case KASUMI_OP_ONLY_AUTH: + auth_xform = xform; + } + + if (mode == KASUMI_OP_NOT_SUPPORTED) { + KASUMI_LOG_ERR("Unsupported operation chain order parameter"); + return -EINVAL; + } + + if (cipher_xform) { + /* Only KASUMI F8 supported */ + if (cipher_xform->cipher.algo != RTE_CRYPTO_CIPHER_KASUMI_F8) + return -EINVAL; + /* Initialize key */ + sso_kasumi_init_f8_key_sched(xform->cipher.key.data, + &sess->pKeySched_cipher); + } + + if (auth_xform) { + /* Only KASUMI F9 supported */ + if (auth_xform->auth.algo != RTE_CRYPTO_AUTH_KASUMI_F9) + return -EINVAL; + sess->auth_op = auth_xform->auth.op; + /* Initialize key */ + sso_kasumi_init_f9_key_sched(xform->auth.key.data, + &sess->pKeySched_hash); + } + + + sess->op = mode; + + return 0; +} + +/** Get KASUMI session. */ +static struct kasumi_session * +kasumi_get_session(struct kasumi_qp *qp, struct rte_crypto_op *op) +{ + struct kasumi_session *sess; + + if (op->sym->sess_type == RTE_CRYPTO_SYM_OP_WITH_SESSION) { + if (unlikely(op->sym->session->dev_type != + RTE_CRYPTODEV_KASUMI_PMD)) + return NULL; + + sess = (struct kasumi_session *)op->sym->session->_private; + } else { + struct rte_cryptodev_session *c_sess = NULL; + + if (rte_mempool_get(qp->sess_mp, (void **)&c_sess)) + return NULL; + + sess = (struct kasumi_session *)c_sess->_private; + + if (unlikely(kasumi_set_session_parameters(sess, + op->sym->xform) != 0)) + return NULL; + } + + return sess; +} + +/** Encrypt/decrypt mbufs with same cipher key. */ +static uint8_t +process_kasumi_cipher_op(struct rte_crypto_op **ops, + struct kasumi_session *session, + uint8_t num_ops) +{ + unsigned i; + uint8_t processed_ops = 0; + uint8_t *src[num_ops], *dst[num_ops]; + uint64_t IV[num_ops]; + uint32_t num_bytes[num_ops]; + + for (i = 0; i < num_ops; i++) { + /* Sanity checks. */ + if (ops[i]->sym->cipher.iv.length != KASUMI_IV_LENGTH) { + ops[i]->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS; + KASUMI_LOG_ERR("iv"); + break; + } + + src[i] = rte_pktmbuf_mtod(ops[i]->sym->m_src, uint8_t *) + + (ops[i]->sym->cipher.data.offset >> 3); + dst[i] = ops[i]->sym->m_dst ? + rte_pktmbuf_mtod(ops[i]->sym->m_dst, uint8_t *) + + (ops[i]->sym->cipher.data.offset >> 3) : + rte_pktmbuf_mtod(ops[i]->sym->m_src, uint8_t *) + + (ops[i]->sym->cipher.data.offset >> 3); + IV[i] = *((uint64_t *)(ops[i]->sym->cipher.iv.data)); + num_bytes[i] = ops[i]->sym->cipher.data.length >> 3; + + processed_ops++; + } + + if (processed_ops != 0) + sso_kasumi_f8_n_buffer(&session->pKeySched_cipher, IV, + src, dst, num_bytes, processed_ops); + + return processed_ops; +} + +/** Encrypt/decrypt mbuf (bit level function). */ +static uint8_t +process_kasumi_cipher_op_bit(struct rte_crypto_op *op, + struct kasumi_session *session) +{ + uint8_t *src, *dst; + uint64_t IV; + uint32_t length_in_bits, offset_in_bits; + + /* Sanity checks. */ + if (unlikely(op->sym->cipher.iv.length != KASUMI_IV_LENGTH)) { + op->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS; + KASUMI_LOG_ERR("iv"); + return 0; + } + + offset_in_bits = op->sym->cipher.data.offset; + src = rte_pktmbuf_mtod(op->sym->m_src, uint8_t *); + dst = op->sym->m_dst ? + rte_pktmbuf_mtod(op->sym->m_dst, uint8_t *) : + rte_pktmbuf_mtod(op->sym->m_src, uint8_t *); + IV = *((uint64_t *)(op->sym->cipher.iv.data)); + length_in_bits = op->sym->cipher.data.length; + + sso_kasumi_f8_1_buffer_bit(&session->pKeySched_cipher, IV, + src, dst, length_in_bits, offset_in_bits); + + return 1; +} + +/** Generate/verify hash from mbufs with same hash key. */ +static int +process_kasumi_hash_op(struct rte_crypto_op **ops, + struct kasumi_session *session, + uint8_t num_ops) +{ + unsigned i; + uint8_t processed_ops = 0; + uint8_t *src, *dst; + uint32_t length_in_bits; + uint32_t num_bytes; + uint32_t shift_bits; + uint64_t IV; + uint8_t direction; + + for (i = 0; i < num_ops; i++) { + if (unlikely(ops[i]->sym->auth.aad.length != KASUMI_IV_LENGTH)) { + ops[i]->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS; + KASUMI_LOG_ERR("aad"); + break; + } + + if (unlikely(ops[i]->sym->auth.digest.length != KASUMI_DIGEST_LENGTH)) { + ops[i]->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS; + KASUMI_LOG_ERR("digest"); + break; + } + + /* Data must be byte aligned */ + if ((ops[i]->sym->auth.data.offset % BYTE_LEN) != 0) { + ops[i]->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS; + KASUMI_LOG_ERR("offset"); + break; + } + + length_in_bits = ops[i]->sym->auth.data.length; + + src = rte_pktmbuf_mtod(ops[i]->sym->m_src, uint8_t *) + + (ops[i]->sym->auth.data.offset >> 3); + /* IV from AAD */ + IV = *((uint64_t *)(ops[i]->sym->auth.aad.data)); + /* Direction from next bit after end of message */ + num_bytes = (length_in_bits >> 3) + 1; + shift_bits = (BYTE_LEN - 1 - length_in_bits) % BYTE_LEN; + direction = (src[num_bytes - 1] >> shift_bits) & 0x01; + + if (session->auth_op == RTE_CRYPTO_AUTH_OP_VERIFY) { + dst = (uint8_t *)rte_pktmbuf_append(ops[i]->sym->m_src, + ops[i]->sym->auth.digest.length); + + sso_kasumi_f9_1_buffer_user(&session->pKeySched_hash, + IV, src, + length_in_bits, dst, direction); + /* Verify digest. */ + if (memcmp(dst, ops[i]->sym->auth.digest.data, + ops[i]->sym->auth.digest.length) != 0) + ops[i]->status = RTE_CRYPTO_OP_STATUS_AUTH_FAILED; + + /* Trim area used for digest from mbuf. */ + rte_pktmbuf_trim(ops[i]->sym->m_src, + ops[i]->sym->auth.digest.length); + } else { + dst = ops[i]->sym->auth.digest.data; + + sso_kasumi_f9_1_buffer_user(&session->pKeySched_hash, + IV, src, + length_in_bits, dst, direction); + } + processed_ops++; + } + + return processed_ops; +} + +/** Process a batch of crypto ops which shares the same session. */ +static int +process_ops(struct rte_crypto_op **ops, struct kasumi_session *session, + struct kasumi_qp *qp, uint8_t num_ops, + uint16_t *accumulated_enqueued_ops) +{ + unsigned i; + unsigned enqueued_ops, processed_ops; + + switch (session->op) { + case KASUMI_OP_ONLY_CIPHER: + processed_ops = process_kasumi_cipher_op(ops, + session, num_ops); + break; + case KASUMI_OP_ONLY_AUTH: + processed_ops = process_kasumi_hash_op(ops, session, + num_ops); + break; + case KASUMI_OP_CIPHER_AUTH: + processed_ops = process_kasumi_cipher_op(ops, session, + num_ops); + process_kasumi_hash_op(ops, session, processed_ops); + break; + case KASUMI_OP_AUTH_CIPHER: + processed_ops = process_kasumi_hash_op(ops, session, + num_ops); + process_kasumi_cipher_op(ops, session, processed_ops); + break; + default: + /* Operation not supported. */ + processed_ops = 0; + } + + for (i = 0; i < num_ops; i++) { + /* + * If there was no error/authentication failure, + * change status to successful. + */ + if (ops[i]->status == RTE_CRYPTO_OP_STATUS_NOT_PROCESSED) + ops[i]->status = RTE_CRYPTO_OP_STATUS_SUCCESS; + /* Free session if a session-less crypto op. */ + if (ops[i]->sym->sess_type == RTE_CRYPTO_SYM_OP_SESSIONLESS) { + rte_mempool_put(qp->sess_mp, ops[i]->sym->session); + ops[i]->sym->session = NULL; + } + } + + enqueued_ops = rte_ring_enqueue_burst(qp->processed_ops, + (void **)ops, processed_ops); + qp->qp_stats.enqueued_count += enqueued_ops; + *accumulated_enqueued_ops += enqueued_ops; + + return enqueued_ops; +} + +/** Process a crypto op with length/offset in bits. */ +static int +process_op_bit(struct rte_crypto_op *op, struct kasumi_session *session, + struct kasumi_qp *qp, uint16_t *accumulated_enqueued_ops) +{ + unsigned enqueued_op, processed_op; + + switch (session->op) { + case KASUMI_OP_ONLY_CIPHER: + processed_op = process_kasumi_cipher_op_bit(op, + session); + break; + case KASUMI_OP_ONLY_AUTH: + processed_op = process_kasumi_hash_op(&op, session, 1); + break; + case KASUMI_OP_CIPHER_AUTH: + processed_op = process_kasumi_cipher_op_bit(op, session); + if (processed_op == 1) + process_kasumi_hash_op(&op, session, 1); + break; + case KASUMI_OP_AUTH_CIPHER: + processed_op = process_kasumi_hash_op(&op, session, 1); + if (processed_op == 1) + process_kasumi_cipher_op_bit(op, session); + break; + default: + /* Operation not supported. */ + processed_op = 0; + } + + /* + * If there was no error/authentication failure, + * change status to successful. + */ + if (op->status == RTE_CRYPTO_OP_STATUS_NOT_PROCESSED) + op->status = RTE_CRYPTO_OP_STATUS_SUCCESS; + + /* Free session if a session-less crypto op. */ + if (op->sym->sess_type == RTE_CRYPTO_SYM_OP_SESSIONLESS) { + rte_mempool_put(qp->sess_mp, op->sym->session); + op->sym->session = NULL; + } + + enqueued_op = rte_ring_enqueue_burst(qp->processed_ops, (void **)&op, + processed_op); + qp->qp_stats.enqueued_count += enqueued_op; + *accumulated_enqueued_ops += enqueued_op; + + return enqueued_op; +} + +static uint16_t +kasumi_pmd_enqueue_burst(void *queue_pair, struct rte_crypto_op **ops, + uint16_t nb_ops) +{ + struct rte_crypto_op *c_ops[nb_ops]; + struct rte_crypto_op *curr_c_op; + + struct kasumi_session *prev_sess = NULL, *curr_sess = NULL; + struct kasumi_qp *qp = queue_pair; + unsigned i; + uint8_t burst_size = 0; + uint16_t enqueued_ops = 0; + uint8_t processed_ops; + + for (i = 0; i < nb_ops; i++) { + curr_c_op = ops[i]; + + /* Set status as enqueued (not processed yet) by default. */ + curr_c_op->status = RTE_CRYPTO_OP_STATUS_NOT_PROCESSED; + + curr_sess = kasumi_get_session(qp, curr_c_op); + if (unlikely(curr_sess == NULL || + curr_sess->op == KASUMI_OP_NOT_SUPPORTED)) { + curr_c_op->status = + RTE_CRYPTO_OP_STATUS_INVALID_SESSION; + break; + } + + /* If length/offset is at bit-level, process this buffer alone. */ + if (((curr_c_op->sym->cipher.data.length % BYTE_LEN) != 0) + || ((ops[i]->sym->cipher.data.offset + % BYTE_LEN) != 0)) { + /* Process the ops of the previous session. */ + if (prev_sess != NULL) { + processed_ops = process_ops(c_ops, prev_sess, + qp, burst_size, &enqueued_ops); + if (processed_ops < burst_size) { + burst_size = 0; + break; + } + + burst_size = 0; + prev_sess = NULL; + } + + processed_ops = process_op_bit(curr_c_op, curr_sess, + qp, &enqueued_ops); + if (processed_ops != 1) + break; + + continue; + } + + /* Batch ops that share the same session. */ + if (prev_sess == NULL) { + prev_sess = curr_sess; + c_ops[burst_size++] = curr_c_op; + } else if (curr_sess == prev_sess) { + c_ops[burst_size++] = curr_c_op; + /* + * When there are enough ops to process in a batch, + * process them, and start a new batch. + */ + if (burst_size == KASUMI_MAX_BURST) { + processed_ops = process_ops(c_ops, prev_sess, + qp, burst_size, &enqueued_ops); + if (processed_ops < burst_size) { + burst_size = 0; + break; + } + + burst_size = 0; + prev_sess = NULL; + } + } else { + /* + * Different session, process the ops + * of the previous session. + */ + processed_ops = process_ops(c_ops, prev_sess, + qp, burst_size, &enqueued_ops); + if (processed_ops < burst_size) { + burst_size = 0; + break; + } + + burst_size = 0; + prev_sess = curr_sess; + + c_ops[burst_size++] = curr_c_op; + } + } + + if (burst_size != 0) { + /* Process the crypto ops of the last session. */ + processed_ops = process_ops(c_ops, prev_sess, + qp, burst_size, &enqueued_ops); + } + + qp->qp_stats.enqueue_err_count += nb_ops - enqueued_ops; + return enqueued_ops; +} + +static uint16_t +kasumi_pmd_dequeue_burst(void *queue_pair, + struct rte_crypto_op **c_ops, uint16_t nb_ops) +{ + struct kasumi_qp *qp = queue_pair; + + unsigned nb_dequeued; + + nb_dequeued = rte_ring_dequeue_burst(qp->processed_ops, + (void **)c_ops, nb_ops); + qp->qp_stats.dequeued_count += nb_dequeued; + + return nb_dequeued; +} + +static int cryptodev_kasumi_uninit(const char *name); + +static int +cryptodev_kasumi_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 kasumi_private *internals; + uint64_t cpu_flags = 0; + + /* Check CPU for supported vector instruction set */ + if (rte_cpu_get_flag_enabled(RTE_CPUFLAG_AVX)) + cpu_flags |= RTE_CRYPTODEV_FF_CPU_AVX; + else if (rte_cpu_get_flag_enabled(RTE_CPUFLAG_SSE4_1)) + cpu_flags |= RTE_CRYPTODEV_FF_CPU_SSE; + else { + KASUMI_LOG_ERR("Vector instructions are not supported by CPU"); + return -EFAULT; + } + + /* Create a unique device name. */ + if (create_unique_device_name(crypto_dev_name, + RTE_CRYPTODEV_NAME_MAX_LEN) != 0) { + KASUMI_LOG_ERR("failed to create unique cryptodev name"); + return -EINVAL; + } + + dev = rte_cryptodev_pmd_virtual_dev_init(crypto_dev_name, + sizeof(struct kasumi_private), init_params->socket_id); + if (dev == NULL) { + KASUMI_LOG_ERR("failed to create cryptodev vdev"); + goto init_error; + } + + dev->dev_type = RTE_CRYPTODEV_KASUMI_PMD; + dev->dev_ops = rte_kasumi_pmd_ops; + + /* Register RX/TX burst functions for data path. */ + dev->dequeue_burst = kasumi_pmd_dequeue_burst; + dev->enqueue_burst = kasumi_pmd_enqueue_burst; + + dev->feature_flags = RTE_CRYPTODEV_FF_SYMMETRIC_CRYPTO | + RTE_CRYPTODEV_FF_SYM_OPERATION_CHAINING | + cpu_flags; + + internals = dev->data->dev_private; + + internals->max_nb_queue_pairs = init_params->max_nb_queue_pairs; + internals->max_nb_sessions = init_params->max_nb_sessions; + + return 0; +init_error: + KASUMI_LOG_ERR("driver %s: cryptodev_kasumi_create failed", name); + + cryptodev_kasumi_uninit(crypto_dev_name); + return -EFAULT; +} + +static int +cryptodev_kasumi_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_kasumi_create(name, &init_params); +} + +static int +cryptodev_kasumi_uninit(const char *name) +{ + if (name == NULL) + return -EINVAL; + + RTE_LOG(INFO, PMD, "Closing KASUMI crypto device %s" + " on numa socket %u\n", + name, rte_socket_id()); + + return 0; +} + +static struct rte_driver cryptodev_kasumi_pmd_drv = { + .name = CRYPTODEV_NAME_KASUMI_PMD, + .type = PMD_VDEV, + .init = cryptodev_kasumi_init, + .uninit = cryptodev_kasumi_uninit +}; + +PMD_REGISTER_DRIVER(cryptodev_kasumi_pmd_drv); |