/*-
* BSD LICENSE
*
* Copyright(c) 2017 Marvell International Ltd.
* Copyright(c) 2017 Semihalf.
* 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 the copyright holder 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_hexdump.h>
#include <rte_cryptodev.h>
#include <rte_cryptodev_pmd.h>
#include <rte_bus_vdev.h>
#include <rte_malloc.h>
#include <rte_cpuflags.h>
#include "rte_mrvl_pmd_private.h"
#define MRVL_MUSDK_DMA_MEMSIZE 41943040
static uint8_t cryptodev_driver_id;
/**
* Flag if particular crypto algorithm is supported by PMD/MUSDK.
*
* The idea is to have Not Supported value as default (0).
* This way we need only to define proper map sizes,
* non-initialized entries will be by default not supported.
*/
enum algo_supported {
ALGO_NOT_SUPPORTED = 0,
ALGO_SUPPORTED = 1,
};
/** Map elements for cipher mapping.*/
struct cipher_params_mapping {
enum algo_supported supported; /**< On/Off switch */
enum sam_cipher_alg cipher_alg; /**< Cipher algorithm */
enum sam_cipher_mode cipher_mode; /**< Cipher mode */
unsigned int max_key_len; /**< Maximum key length (in bytes)*/
}
/* We want to squeeze in multiple maps into the cache line. */
__rte_aligned(32);
/** Map elements for auth mapping.*/
struct auth_params_mapping {
enum algo_supported supported; /**< On/off switch */
enum sam_auth_alg auth_alg; /**< Auth algorithm */
}
/* We want to squeeze in multiple maps into the cache line. */
__rte_aligned(32);
/**
* Map of supported cipher algorithms.
*/
static const
struct cipher_params_mapping cipher_map[RTE_CRYPTO_CIPHER_LIST_END] = {
[RTE_CRYPTO_CIPHER_3DES_CBC] = {
.supported = ALGO_SUPPORTED,
.cipher_alg = SAM_CIPHER_3DES,
.cipher_mode = SAM_CIPHER_CBC,
.max_key_len = BITS2BYTES(192) },
[RTE_CRYPTO_CIPHER_3DES_CTR] = {
.supported = ALGO_SUPPORTED,
.cipher_alg = SAM_CIPHER_3DES,
.cipher_mode = SAM_CIPHER_CTR,
.max_key_len = BITS2BYTES(192) },
[RTE_CRYPTO_CIPHER_3DES_ECB] = {
.supported = ALGO_SUPPORTED,
.cipher_alg = SAM_CIPHER_3DES,
.cipher_mode = SAM_CIPHER_ECB,
.max_key_len = BITS2BYTES(192) },
[RTE_CRYPTO_CIPHER_AES_CBC] = {
.supported = ALGO_SUPPORTED,
.cipher_alg = SAM_CIPHER_AES,
.cipher_mode = SAM_CIPHER_CBC,
.max_key_len = BITS2BYTES(256) },
[RTE_CRYPTO_CIPHER_AES_CTR] = {
.supported = ALGO_SUPPORTED,
.cipher_alg = SAM_CIPHER_AES,
.cipher_mode = SAM_CIPHER_CTR,
.max_key_len = BITS2BYTES(256) },
};
/**
* Map of supported auth algorithms.
*/
static const
struct auth_params_mapping auth_map[RTE_CRYPTO_AUTH_LIST_END] = {
[RTE_CRYPTO_AUTH_MD5_HMAC] = {
.supported = ALGO_SUPPORTED,
.auth_alg = SAM_AUTH_HMAC_MD5 },
[RTE_CRYPTO_AUTH_MD5] = {
.supported = ALGO_SUPPORTED,
.auth_alg = SAM_AUTH_HASH_MD5 },
[RTE_CRYPTO_AUTH_SHA1_HMAC] = {
.supported = ALGO_SUPPORTED,
.auth_alg = SAM_AUTH_HMAC_SHA1 },
[RTE_CRYPTO_AUTH_SHA1] = {
.supported = ALGO_SUPPORTED,
.auth_alg = SAM_AUTH_HASH_SHA1 },
[RTE_CRYPTO_AUTH_SHA224] = {
.supported = ALGO_SUPPORTED,
.auth_alg = SAM_AUTH_HASH_SHA2_224 },
[RTE_CRYPTO_AUTH_SHA256_HMAC] = {
.supported = ALGO_SUPPORTED,
.auth_alg = SAM_AUTH_HMAC_SHA2_256 },
[RTE_CRYPTO_AUTH_SHA256] = {
.supported = ALGO_SUPPORTED,
.auth_alg = SAM_AUTH_HASH_SHA2_256 },
[RTE_CRYPTO_AUTH_SHA384_HMAC] = {
.supported = ALGO_SUPPORTED,
.auth_alg = SAM_AUTH_HMAC_SHA2_384 },
[RTE_CRYPTO_AUTH_SHA384] = {
.supported = ALGO_SUPPORTED,
.auth_alg = SAM_AUTH_HASH_SHA2_384 },
[RTE_CRYPTO_AUTH_SHA512_HMAC] = {
.supported = ALGO_SUPPORTED,
.auth_alg = SAM_AUTH_HMAC_SHA2_512 },
[RTE_CRYPTO_AUTH_SHA512] = {
.supported = ALGO_SUPPORTED,
.auth_alg = SAM_AUTH_HASH_SHA2_512 },
[RTE_CRYPTO_AUTH_AES_GMAC] = {
.supported = ALGO_SUPPORTED,
.auth_alg = SAM_AUTH_AES_GMAC },
};
/**
* Map of supported aead algorithms.
*/
static const
struct cipher_params_mapping aead_map[RTE_CRYPTO_AEAD_LIST_END] = {
[RTE_CRYPTO_AEAD_AES_GCM] = {
.supported = ALGO_SUPPORTED,
.cipher_alg = SAM_CIPHER_AES,
.cipher_mode = SAM_CIPHER_GCM,
.max_key_len = BITS2BYTES(256) },
};
/*
*-----------------------------------------------------------------------------
* Forward declarations.
*-----------------------------------------------------------------------------
*/
static int cryptodev_mrvl_crypto_uninit(struct rte_vdev_device *vdev);
/*
*-----------------------------------------------------------------------------
* Session Preparation.
*-----------------------------------------------------------------------------
*/
/**
* Get xform chain order.
*
* @param xform Pointer to configuration structure chain for crypto operations.
* @returns Order of crypto operations.
*/
static enum mrvl_crypto_chain_order
mrvl_crypto_get_chain_order(const struct rte_crypto_sym_xform *xform)
{
/* Currently, Marvell supports max 2 operations in chain */
if (xform->next != NULL && xform->next->next != NULL)
return MRVL_CRYPTO_CHAIN_NOT_SUPPORTED;
if (xform->next != NULL) {
if ((xform->type == RTE_CRYPTO_SYM_XFORM_AUTH) &&
(xform->next->type == RTE_CRYPTO_SYM_XFORM_CIPHER))
return MRVL_CRYPTO_CHAIN_AUTH_CIPHER;
if ((xform->type == RTE_CRYPTO_SYM_XFORM_CIPHER) &&
(xform->next->type == RTE_CRYPTO_SYM_XFORM_AUTH))
return MRVL_CRYPTO_CHAIN_CIPHER_AUTH;
} else {
if (xform->type == RTE_CRYPTO_SYM_XFORM_AUTH)
return MRVL_CRYPTO_CHAIN_AUTH_ONLY;
if (xform->type == RTE_CRYPTO_SYM_XFORM_CIPHER)
return MRVL_CRYPTO_CHAIN_CIPHER_ONLY;
if (xform->type == RTE_CRYPTO_SYM_XFORM_AEAD)
return MRVL_CRYPTO_CHAIN_COMBINED;
}
return MRVL_CRYPTO_CHAIN_NOT_SUPPORTED;
}
/**
* Set session parameters for cipher part.
*
* @param sess Crypto session pointer.
* @param cipher_xform Pointer to configuration structure for cipher operations.
* @returns 0 in case of success, negative value otherwise.
*/
static int
mrvl_crypto_set_cipher_session_parameters(struct mrvl_crypto_session *sess,
const struct rte_crypto_sym_xform *cipher_xform)
{
/* Make sure we've got proper struct */
if (cipher_xform->type != RTE_CRYPTO_SYM_XFORM_CIPHER) {
MRVL_CRYPTO_LOG_ERR("Wrong xform struct provided!");
return -EINVAL;
}
/* See if map data is present and valid */
if ((cipher_xform->cipher.algo > RTE_DIM(cipher_map)) ||
(cipher_map[cipher_xform->cipher.algo].supported
!= ALGO_SUPPORTED)) {
MRVL_CRYPTO_LOG_ERR("Cipher algorithm not supported!");
return -EINVAL;
}
sess->cipher_iv_offset = cipher_xform->cipher.iv.offset;
sess->sam_sess_params.dir =
(cipher_xform->cipher.op == RTE_CRYPTO_CIPHER_OP_ENCRYPT) ?
SAM_DIR_ENCRYPT : SAM_DIR_DECRYPT;
sess->sam_sess_params.cipher_alg =
cipher_map[cipher_xform->cipher.algo].cipher_alg;
sess->sam_sess_params.cipher_mode =
cipher_map[cipher_xform->cipher.algo].cipher_mode;
/* Assume IV will be passed together with data. */
sess->sam_sess_params.cipher_iv = NULL;
/* Get max key length. */
if (cipher_xform->cipher.key.length >
cipher_map[cipher_xform->cipher.algo].max_key_len) {
MRVL_CRYPTO_LOG_ERR("Wrong key length!");
return -EINVAL;
}
sess->sam_sess_params.cipher_key_len = cipher_xform->cipher.key.length;
sess->sam_sess_params.cipher_key = cipher_xform->cipher.key.data;
return 0;
}
/**
* Set session parameters for authentication part.
*
* @param sess Crypto session pointer.
* @param auth_xform Pointer to configuration structure for auth operations.
* @returns 0 in case of success, negative value otherwise.
*/
static int
mrvl_crypto_set_auth_session_parameters(struct mrvl_crypto_session *sess,
const struct rte_crypto_sym_xform *auth_xform)
{
/* Make sure we've got proper struct */
if (auth_xform->type != RTE_CRYPTO_SYM_XFORM_AUTH) {
MRVL_CRYPTO_LOG_ERR("Wrong xform struct provided!");
return -EINVAL;
}
/* See if map data is present and valid */
if ((auth_xform->auth.algo > RTE_DIM(auth_map)) ||
(auth_map[auth_xform->auth.algo].supported != ALGO_SUPPORTED)) {
MRVL_CRYPTO_LOG_ERR("Auth algorithm not supported!");
return -EINVAL;
}
sess->sam_sess_params.dir =
(auth_xform->auth.op == RTE_CRYPTO_AUTH_OP_GENERATE) ?
SAM_DIR_ENCRYPT : SAM_DIR_DECRYPT;
sess->sam_sess_params.auth_alg =
auth_map[auth_xform->auth.algo].auth_alg;
sess->sam_sess_params.u.basic.auth_icv_len =
auth_xform->auth.digest_length;
/* auth_key must be NULL if auth algorithm does not use HMAC */
sess->sam_sess_params.auth_key = auth_xform->auth.key.length ?
auth_xform->auth.key.data : NULL;
sess->sam_sess_params.auth_key_len = auth_xform->auth.key.length;
return 0;
}
/**
* Set session parameters for aead part.
*
* @param sess Crypto session pointer.
* @param aead_xform Pointer to configuration structure for aead operations.
* @returns 0 in case of success, negative value otherwise.
*/
static int
mrvl_crypto_set_aead_session_parameters(struct mrvl_crypto_session *sess,
const struct rte_crypto_sym_xform *aead_xform)
{
/* Make sure we've got proper struct */
if (aead_xform->type != RTE_CRYPTO_SYM_XFORM_AEAD) {
MRVL_CRYPTO_LOG_ERR("Wrong xform struct provided!");
return -EINVAL;
}
/* See if map data is present and valid */
if ((aead_xform->aead.algo > RTE_DIM(aead_map)) ||
(aead_map[aead_xform->aead.algo].supported
!= ALGO_SUPPORTED)) {
MRVL_CRYPTO_LOG_ERR("AEAD algorithm not supported!");
return -EINVAL;
}
sess->sam_sess_params.dir =
(aead_xform->aead.op == RTE_CRYPTO_AEAD_OP_ENCRYPT) ?
SAM_DIR_ENCRYPT : SAM_DIR_DECRYPT;
sess->sam_sess_params.cipher_alg =
aead_map[aead_xform->aead.algo].cipher_alg;
sess->sam_sess_params.cipher_mode =
aead_map[aead_xform->aead.algo].cipher_mode;
/* Assume IV will be passed together with data. */
sess->sam_sess_params.cipher_iv = NULL;
/* Get max key length. */
if (aead_xform->aead.key.length >
aead_map[aead_xform->aead.algo].max_key_len) {
MRVL_CRYPTO_LOG_ERR("Wrong key length!");
return -EINVAL;
}
sess->sam_sess_params.cipher_key = aead_xform->aead.key.data;
sess->sam_sess_params.cipher_key_len = aead_xform->aead.key.length;
if (sess->sam_sess_params.cipher_mode == SAM_CIPHER_GCM)
sess->sam_sess_params.auth_alg = SAM_AUTH_AES_GCM;
sess->sam_sess_params.u.basic.auth_icv_len =
aead_xform->aead.digest_length;
sess->sam_sess_params.u.basic.auth_aad_len =
aead_xform->aead.aad_length;
return 0;
}
/**
* Parse crypto transform chain and setup session parameters.
*
* @param dev Pointer to crypto device
* @param sess Poiner to crypto session
* @param xform Pointer to configuration structure chain for crypto operations.
* @returns 0 in case of success, negative value otherwise.
*/
int
mrvl_crypto_set_session_parameters(struct mrvl_crypto_session *sess,
const struct rte_crypto_sym_xform *xform)
{
const struct rte_crypto_sym_xform *cipher_xform = NULL;
const struct rte_crypto_sym_xform *auth_xform = NULL;
const struct rte_crypto_sym_xform *aead_xform = NULL;
/* Filter out spurious/broken requests */
if (xform == NULL)
return -EINVAL;
sess->chain_order = mrvl_crypto_get_chain_order(xform);
switch (sess->chain_order) {
case MRVL_CRYPTO_CHAIN_CIPHER_AUTH:
cipher_xform = xform;
auth_xform = xform->next;
break;
case MRVL_CRYPTO_CHAIN_AUTH_CIPHER:
auth_xform = xform;
cipher_xform = xform->next;
break;
case MRVL_CRYPTO_CHAIN_CIPHER_ONLY:
cipher_xform = xform;
break;
case MRVL_CRYPTO_CHAIN_AUTH_ONLY:
auth_xform = xform;
break;
case MRVL_CRYPTO_CHAIN_COMBINED:
aead_xform = xform;
break;
default:
return -EINVAL;
}
if ((cipher_xform != NULL) &&
(mrvl_crypto_set_cipher_session_parameters(
sess, cipher_xform) < 0)) {
MRVL_CRYPTO_LOG_ERR("Invalid/unsupported cipher parameters");
return -EINVAL;
}
if ((auth_xform != NULL) &&
(mrvl_crypto_set_auth_session_parameters(
sess, auth_xform) < 0)) {
MRVL_CRYPTO_LOG_ERR("Invalid/unsupported auth parameters");
return -EINVAL;
}
if ((aead_xform != NULL) &&
(mrvl_crypto_set_aead_session_parameters(
sess, aead_xform) < 0)) {
MRVL_CRYPTO_LOG_ERR("Invalid/unsupported aead parameters");
return -EINVAL;
}
return 0;
}
/*
*-----------------------------------------------------------------------------
* Process Operations
*-----------------------------------------------------------------------------
*/
/**
* Prepare a single request.
*
* This function basically translates DPDK crypto request into one
* understandable by MUDSK's SAM. If this is a first request in a session,
* it starts the session.
*
* @param request Pointer to pre-allocated && reset request buffer [Out].
* @param src_bd Pointer to pre-allocated source descriptor [Out].
* @param dst_bd Pointer to pre-allocated destination descriptor [Out].
* @param op Pointer to DPDK crypto operation struct [In].
*/
static inline int
mrvl_request_prepare(struct sam_cio_op_params *request,
struct sam_buf_info *src_bd,
struct sam_buf_info *dst_bd,
struct rte_crypto_op *op)
{
struct mrvl_crypto_session *sess;
struct rte_mbuf *dst_mbuf;
uint8_t *digest;
if (unlikely(op->sess_type == RTE_CRYPTO_OP_SESSIONLESS)) {
MRVL_CRYPTO_LOG_ERR("MRVL CRYPTO PMD only supports session "
"oriented requests, op (%p) is sessionless.",
op);
return -EINVAL;
}
sess = (struct mrvl_crypto_session *)get_session_private_data(
op->sym->session, cryptodev_driver_id);
if (unlikely(sess == NULL)) {
MRVL_CRYPTO_LOG_ERR("Session was not created for this device");
return -EINVAL;
}
/*
* If application delivered us null dst buffer, it means it expects
* us to deliver the result in src buffer.
*/
dst_mbuf = op->sym->m_dst ? op->sym->m_dst : op->sym->m_src;
request->sa = sess->sam_sess;
request->cookie = op;
/* Single buffers only, sorry. */
request->num_bufs = 1;
request->src = src_bd;
src_bd->vaddr = rte_pktmbuf_mtod(op->sym->m_src, void *);
src_bd->paddr = rte_pktmbuf_iova(op->sym->m_src);
src_bd->len = rte_pktmbuf_data_len(op->sym->m_src);
/* Empty source. */
if (rte_pktmbuf_data_len(op->sym->m_src) == 0) {
/* EIP does not support 0 length buffers. */
MRVL_CRYPTO_LOG_ERR("Buffer length == 0 not supported!");
return -1;
}
/* Empty destination. */
if (rte_pktmbuf_data_len(dst_mbuf) == 0) {
/* Make dst buffer fit at least source data. */
if (rte_pktmbuf_append(dst_mbuf,
rte_pktmbuf_data_len(op->sym->m_src)) == NULL) {
MRVL_CRYPTO_LOG_ERR("Unable to set big enough dst buffer!");
return -1;
}
}
request->dst = dst_bd;
dst_bd->vaddr = rte_pktmbuf_mtod(dst_mbuf, void *);
dst_bd->paddr = rte_pktmbuf_iova(dst_mbuf);
/*
* We can use all available space in dst_mbuf,
* not only what's used currently.
*/
dst_bd->len = dst_mbuf->buf_len - rte_pktmbuf_headroom(dst_mbuf);
if (sess->chain_order == MRVL_CRYPTO_CHAIN_COMBINED) {
request->cipher_len = op->sym->aead.data.length;
request->cipher_offset = op->sym->aead.data.offset;
request->cipher_iv = rte_crypto_op_ctod_offset(op, uint8_t *,
sess->cipher_iv_offset);
request->auth_aad = op->sym->aead.aad.data;
request->auth_offset = request->cipher_offset;
request->auth_len = request->cipher_len;
} else {
request->cipher_len = op->sym->cipher.data.length;
request->cipher_offset = op->sym->cipher.data.offset;
request->cipher_iv = rte_crypto_op_ctod_offset(op, uint8_t *,
sess->cipher_iv_offset);
request->auth_offset = op->sym->auth.data.offset;
request->auth_len = op->sym->auth.data.length;
}
digest = sess->chain_order == MRVL_CRYPTO_CHAIN_COMBINED ?
op->sym->aead.digest.data : op->sym->auth.digest.data;
if (digest == NULL) {
/* No auth - no worry. */
return 0;
}
request->auth_icv_offset = request->auth_offset + request->auth_len;
/*
* EIP supports only scenarios where ICV(digest buffer) is placed at
* auth_icv_offset. Any other placement means risking errors.
*/
if (sess->sam_sess_params.dir == SAM_DIR_ENCRYPT) {
/*
* This should be the most common case anyway,
* EIP will overwrite DST buffer at auth_icv_offset.
*/
if (rte_pktmbuf_mtod_offset(
dst_mbuf, uint8_t *,
request->auth_icv_offset) == digest) {
return 0;
}
} else {/* sess->sam_sess_params.dir == SAM_DIR_DECRYPT */
/*
* EIP will look for digest at auth_icv_offset
* offset in SRC buffer.
*/
if (rte_pktmbuf_mtod_offset(
op->sym->m_src, uint8_t *,
request->auth_icv_offset) == digest) {
return 0;
}
}
/*
* If we landed here it means that digest pointer is
* at different than expected place.
*/
return -1;
}
/*
*-----------------------------------------------------------------------------
* PMD Framework handlers
*-----------------------------------------------------------------------------
*/
/**
* Enqueue burst.
*
* @param queue_pair Pointer to queue pair.
* @param ops Pointer to ops requests array.
* @param nb_ops Number of elements in ops requests array.
* @returns Number of elements consumed from ops.
*/
static uint16_t
mrvl_crypto_pmd_enqueue_burst(void *queue_pair, struct rte_crypto_op **ops,
uint16_t nb_ops)
{
uint16_t iter_ops = 0;
uint16_t to_enq = 0;
uint16_t consumed = 0;
int ret;
struct sam_cio_op_params requests[nb_ops];
/*
* DPDK uses single fragment buffers, so we can KISS descriptors.
* SAM does not store bd pointers, so on-stack scope will be enough.
*/
struct sam_buf_info src_bd[nb_ops];
struct sam_buf_info dst_bd[nb_ops];
struct mrvl_crypto_qp *qp = (struct mrvl_crypto_qp *)queue_pair;
if (nb_ops == 0)
return 0;
/* Prepare the burst. */
memset(&requests, 0, sizeof(requests));
/* Iterate through */
for (; iter_ops < nb_ops; ++iter_ops) {
if (mrvl_request_prepare(&requests[iter_ops],
&src_bd[iter_ops],
&dst_bd[iter_ops],
ops[iter_ops]) < 0) {
MRVL_CRYPTO_LOG_ERR(
"Error while parameters preparation!");
qp->stats.enqueue_err_count++;
ops[iter_ops]->status = RTE_CRYPTO_OP_STATUS_ERROR;
/*
* Number of handled ops is increased
* (even if the result of handling is error).
*/
++consumed;
break;
}
ops[iter_ops]->status =
RTE_CRYPTO_OP_STATUS_NOT_PROCESSED;
/* Increase the number of ops to enqueue. */
++to_enq;
} /* for (; iter_ops < nb_ops;... */
if (to_enq > 0) {
/* Send the burst */
ret = sam_cio_enq(qp->cio, requests, &to_enq);
consumed += to_enq;
if (ret < 0) {
/*
* Trust SAM that in this case returned value will be at
* some point correct (now it is returned unmodified).
*/
qp->stats.enqueue_err_count += to_enq;
for (iter_ops = 0; iter_ops < to_enq; ++iter_ops)
ops[iter_ops]->status =
RTE_CRYPTO_OP_STATUS_ERROR;
}
}
qp->stats.enqueued_count += to_enq;
return consumed;
}
/**
* Dequeue burst.
*
* @param queue_pair Pointer to queue pair.
* @param ops Pointer to ops requests array.
* @param nb_ops Number of elements in ops requests array.
* @returns Number of elements dequeued.
*/
static uint16_t
mrvl_crypto_pmd_dequeue_burst(void *queue_pair,
struct rte_crypto_op **ops,
uint16_t nb_ops)
{
int ret;
struct mrvl_crypto_qp *qp = queue_pair;
struct sam_cio *cio = qp->cio;
struct sam_cio_op_result results[nb_ops];
uint16_t i;
ret = sam_cio_deq(cio, results, &nb_ops);
if (ret < 0) {
/* Count all dequeued as error. */
qp->stats.dequeue_err_count += nb_ops;
/* But act as they were dequeued anyway*/
qp->stats.dequeued_count += nb_ops;
return 0;
}
/* Unpack and check results. */
for (i = 0; i < nb_ops; ++i) {
ops[i] = results[i].cookie;
switch (results[i].status) {
case SAM_CIO_OK:
ops[i]->status = RTE_CRYPTO_OP_STATUS_SUCCESS;
break;
case SAM_CIO_ERR_ICV:
MRVL_CRYPTO_LOG_DBG("CIO returned SAM_CIO_ERR_ICV.");
ops[i]->status = RTE_CRYPTO_OP_STATUS_AUTH_FAILED;
break;
default:
MRVL_CRYPTO_LOG_DBG(
"CIO returned Error: %d", results[i].status);
ops[i]->status = RTE_CRYPTO_OP_STATUS_ERROR;
break;
}
}
qp->stats.dequeued_count += nb_ops;
return nb_ops;
}
/**
* Create a new crypto device.
*
* @param name Driver name.
* @param vdev Pointer to device structure.
* @param init_params Pointer to initialization parameters.
* @returns 0 in case of success, negative value otherwise.
*/
static int
cryptodev_mrvl_crypto_create(const char *name,
struct rte_vdev_device *vdev,
struct rte_cryptodev_pmd_init_params *init_params)
{
struct rte_cryptodev *dev;
struct mrvl_crypto_private *internals;
struct sam_init_params sam_params;
int ret;
dev = rte_cryptodev_pmd_create(name, &vdev->device, init_params);
if (dev == NULL) {
MRVL_CRYPTO_LOG_ERR("failed to create cryptodev vdev");
goto init_error;
}
dev->driver_id = cryptodev_driver_id;
dev->dev_ops = rte_mrvl_crypto_pmd_ops;
/* Register rx/tx burst functions for data path. */
dev->enqueue_burst = mrvl_crypto_pmd_enqueue_burst;
dev->dequeue_burst = mrvl_crypto_pmd_dequeue_burst;
dev->feature_flags = RTE_CRYPTODEV_FF_SYMMETRIC_CRYPTO |
RTE_CRYPTODEV_FF_SYM_OPERATION_CHAINING |
RTE_CRYPTODEV_FF_HW_ACCELERATED;
/* Set vector instructions mode supported */
internals = dev->data->dev_private;
internals->max_nb_qpairs = init_params->max_nb_queue_pairs;
internals->max_nb_sessions = init_params->max_nb_sessions;
/*
* ret == -EEXIST is correct, it means DMA
* has been already initialized.
*/
ret = mv_sys_dma_mem_init(MRVL_MUSDK_DMA_MEMSIZE);
if (ret < 0) {
if (ret != -EEXIST)
return ret;
MRVL_CRYPTO_LOG_INFO(
"DMA memory has been already initialized by a different driver.");
}
sam_params.max_num_sessions = internals->max_nb_sessions;
return sam_init(&sam_params);
init_error:
MRVL_CRYPTO_LOG_ERR(
"driver %s: %s failed", init_params->name, __func__);
cryptodev_mrvl_crypto_uninit(vdev);
return -EFAULT;
}
/**
* Initialize the crypto device.
*
* @param vdev Pointer to device structure.
* @returns 0 in case of success, negative value otherwise.
*/
static int
cryptodev_mrvl_crypto_init(struct rte_vdev_device *vdev)
{
struct rte_cryptodev_pmd_init_params init_params = { };
const char *name, *args;
int ret;
name = rte_vdev_device_name(vdev);
if (name == NULL)
return -EINVAL;
args = rte_vdev_device_args(vdev);
init_params.private_data_size = sizeof(struct mrvl_crypto_private);
init_params.max_nb_queue_pairs = sam_get_num_inst() * SAM_HW_RING_NUM;
init_params.max_nb_sessions =
RTE_CRYPTODEV_PMD_DEFAULT_MAX_NB_SESSIONS;
init_params.socket_id = rte_socket_id();
ret = rte_cryptodev_pmd_parse_input_args(&init_params, args);
if (ret) {
RTE_LOG(ERR, PMD,
"Failed to parse initialisation arguments[%s]\n",
args);
return -EINVAL;
}
return cryptodev_mrvl_crypto_create(name, vdev, &init_params);
}
/**
* Uninitialize the crypto device
*
* @param vdev Pointer to device structure.
* @returns 0 in case of success, negative value otherwise.
*/
static int
cryptodev_mrvl_crypto_uninit(struct rte_vdev_device *vdev)
{
struct rte_cryptodev *cryptodev;
const char *name = rte_vdev_device_name(vdev);
if (name == NULL)
return -EINVAL;
RTE_LOG(INFO, PMD,
"Closing Marvell crypto device %s on numa socket %u\n",
name, rte_socket_id());
sam_deinit();
cryptodev = rte_cryptodev_pmd_get_named_dev(name);
if (cryptodev == NULL)
return -ENODEV;
return rte_cryptodev_pmd_destroy(cryptodev);
}
/**
* Basic driver handlers for use in the constructor.
*/
static struct rte_vdev_driver cryptodev_mrvl_pmd_drv = {
.probe = cryptodev_mrvl_crypto_init,
.remove = cryptodev_mrvl_crypto_uninit
};
static struct cryptodev_driver mrvl_crypto_drv;
/* Register the driver in constructor. */
RTE_PMD_REGISTER_VDEV(CRYPTODEV_NAME_MRVL_PMD, cryptodev_mrvl_pmd_drv);
RTE_PMD_REGISTER_PARAM_STRING(CRYPTODEV_NAME_MRVL_PMD,
"max_nb_queue_pairs=<int> "
"max_nb_sessions=<int> "
"socket_id=<int>");
RTE_PMD_REGISTER_CRYPTO_DRIVER(mrvl_crypto_drv, cryptodev_mrvl_pmd_drv,
cryptodev_driver_id);