--- /dev/null
+/*
+ * BSD LICENSE
+ *
+ * Copyright (C) Cavium networks Ltd. 2017.
+ *
+ * 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 Cavium networks 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 <stdbool.h>
+
+#include <rte_common.h>
+#include <rte_hexdump.h>
+#include <rte_cryptodev.h>
+#include <rte_cryptodev_pmd.h>
+#include <rte_vdev.h>
+#include <rte_malloc.h>
+#include <rte_cpuflags.h>
+
+#include "armv8_crypto_defs.h"
+
+#include "rte_armv8_pmd_private.h"
+
+static int cryptodev_armv8_crypto_uninit(struct rte_vdev_device *vdev);
+
+/**
+ * Pointers to the supported combined mode crypto functions are stored
+ * in the static tables. Each combined (chained) cryptographic operation
+ * can be described by a set of numbers:
+ * - order: order of operations (cipher, auth) or (auth, cipher)
+ * - direction: encryption or decryption
+ * - calg: cipher algorithm such as AES_CBC, AES_CTR, etc.
+ * - aalg: authentication algorithm such as SHA1, SHA256, etc.
+ * - keyl: cipher key length, for example 128, 192, 256 bits
+ *
+ * In order to quickly acquire each function pointer based on those numbers,
+ * a hierarchy of arrays is maintained. The final level, 3D array is indexed
+ * by the combined mode function parameters only (cipher algorithm,
+ * authentication algorithm and key length).
+ *
+ * This gives 3 memory accesses to obtain a function pointer instead of
+ * traversing the array manually and comparing function parameters on each loop.
+ *
+ * +--+CRYPTO_FUNC
+ * +--+ENC|
+ * +--+CA|
+ * | +--+DEC
+ * ORDER|
+ * | +--+ENC
+ * +--+AC|
+ * +--+DEC
+ *
+ */
+
+/**
+ * 3D array type for ARM Combined Mode crypto functions pointers.
+ * CRYPTO_CIPHER_MAX: max cipher ID number
+ * CRYPTO_AUTH_MAX: max auth ID number
+ * CRYPTO_CIPHER_KEYLEN_MAX: max key length ID number
+ */
+typedef const crypto_func_t
+crypto_func_tbl_t[CRYPTO_CIPHER_MAX][CRYPTO_AUTH_MAX][CRYPTO_CIPHER_KEYLEN_MAX];
+
+/* Evaluate to key length definition */
+#define KEYL(keyl) (ARMV8_CRYPTO_CIPHER_KEYLEN_ ## keyl)
+
+/* Local aliases for supported ciphers */
+#define CIPH_AES_CBC RTE_CRYPTO_CIPHER_AES_CBC
+/* Local aliases for supported hashes */
+#define AUTH_SHA1_HMAC RTE_CRYPTO_AUTH_SHA1_HMAC
+#define AUTH_SHA256_HMAC RTE_CRYPTO_AUTH_SHA256_HMAC
+
+/**
+ * Arrays containing pointers to particular cryptographic,
+ * combined mode functions.
+ * crypto_op_ca_encrypt: cipher (encrypt), authenticate
+ * crypto_op_ca_decrypt: cipher (decrypt), authenticate
+ * crypto_op_ac_encrypt: authenticate, cipher (encrypt)
+ * crypto_op_ac_decrypt: authenticate, cipher (decrypt)
+ */
+static const crypto_func_tbl_t
+crypto_op_ca_encrypt = {
+ /* [cipher alg][auth alg][key length] = crypto_function, */
+ [CIPH_AES_CBC][AUTH_SHA1_HMAC][KEYL(128)] = aes128cbc_sha1_hmac,
+ [CIPH_AES_CBC][AUTH_SHA256_HMAC][KEYL(128)] = aes128cbc_sha256_hmac,
+};
+
+static const crypto_func_tbl_t
+crypto_op_ca_decrypt = {
+ NULL
+};
+
+static const crypto_func_tbl_t
+crypto_op_ac_encrypt = {
+ NULL
+};
+
+static const crypto_func_tbl_t
+crypto_op_ac_decrypt = {
+ /* [cipher alg][auth alg][key length] = crypto_function, */
+ [CIPH_AES_CBC][AUTH_SHA1_HMAC][KEYL(128)] = sha1_hmac_aes128cbc_dec,
+ [CIPH_AES_CBC][AUTH_SHA256_HMAC][KEYL(128)] = sha256_hmac_aes128cbc_dec,
+};
+
+/**
+ * Arrays containing pointers to particular cryptographic function sets,
+ * covering given cipher operation directions (encrypt, decrypt)
+ * for each order of cipher and authentication pairs.
+ */
+static const crypto_func_tbl_t *
+crypto_cipher_auth[] = {
+ &crypto_op_ca_encrypt,
+ &crypto_op_ca_decrypt,
+ NULL
+};
+
+static const crypto_func_tbl_t *
+crypto_auth_cipher[] = {
+ &crypto_op_ac_encrypt,
+ &crypto_op_ac_decrypt,
+ NULL
+};
+
+/**
+ * Top level array containing pointers to particular cryptographic
+ * function sets, covering given order of chained operations.
+ * crypto_cipher_auth: cipher first, authenticate after
+ * crypto_auth_cipher: authenticate first, cipher after
+ */
+static const crypto_func_tbl_t **
+crypto_chain_order[] = {
+ crypto_cipher_auth,
+ crypto_auth_cipher,
+ NULL
+};
+
+/**
+ * Extract particular combined mode crypto function from the 3D array.
+ */
+#define CRYPTO_GET_ALGO(order, cop, calg, aalg, keyl) \
+({ \
+ crypto_func_tbl_t *func_tbl = \
+ (crypto_chain_order[(order)])[(cop)]; \
+ \
+ ((*func_tbl)[(calg)][(aalg)][KEYL(keyl)]); \
+})
+
+/*----------------------------------------------------------------------------*/
+
+/**
+ * 2D array type for ARM key schedule functions pointers.
+ * CRYPTO_CIPHER_MAX: max cipher ID number
+ * CRYPTO_CIPHER_KEYLEN_MAX: max key length ID number
+ */
+typedef const crypto_key_sched_t
+crypto_key_sched_tbl_t[CRYPTO_CIPHER_MAX][CRYPTO_CIPHER_KEYLEN_MAX];
+
+static const crypto_key_sched_tbl_t
+crypto_key_sched_encrypt = {
+ /* [cipher alg][key length] = key_expand_func, */
+ [CIPH_AES_CBC][KEYL(128)] = aes128_key_sched_enc,
+};
+
+static const crypto_key_sched_tbl_t
+crypto_key_sched_decrypt = {
+ /* [cipher alg][key length] = key_expand_func, */
+ [CIPH_AES_CBC][KEYL(128)] = aes128_key_sched_dec,
+};
+
+/**
+ * Top level array containing pointers to particular key generation
+ * function sets, covering given operation direction.
+ * crypto_key_sched_encrypt: keys for encryption
+ * crypto_key_sched_decrypt: keys for decryption
+ */
+static const crypto_key_sched_tbl_t *
+crypto_key_sched_dir[] = {
+ &crypto_key_sched_encrypt,
+ &crypto_key_sched_decrypt,
+ NULL
+};
+
+/**
+ * Extract particular combined mode crypto function from the 3D array.
+ */
+#define CRYPTO_GET_KEY_SCHED(cop, calg, keyl) \
+({ \
+ crypto_key_sched_tbl_t *ks_tbl = crypto_key_sched_dir[(cop)]; \
+ \
+ ((*ks_tbl)[(calg)][KEYL(keyl)]); \
+})
+
+/*----------------------------------------------------------------------------*/
+
+/*
+ *------------------------------------------------------------------------------
+ * Session Prepare
+ *------------------------------------------------------------------------------
+ */
+
+/** Get xform chain order */
+static enum armv8_crypto_chain_order
+armv8_crypto_get_chain_order(const struct rte_crypto_sym_xform *xform)
+{
+
+ /*
+ * This driver currently covers only chained operations.
+ * Ignore only cipher or only authentication operations
+ * or chains longer than 2 xform structures.
+ */
+ if (xform->next == NULL || xform->next->next != NULL)
+ return ARMV8_CRYPTO_CHAIN_NOT_SUPPORTED;
+
+ if (xform->type == RTE_CRYPTO_SYM_XFORM_AUTH) {
+ if (xform->next->type == RTE_CRYPTO_SYM_XFORM_CIPHER)
+ return ARMV8_CRYPTO_CHAIN_AUTH_CIPHER;
+ }
+
+ if (xform->type == RTE_CRYPTO_SYM_XFORM_CIPHER) {
+ if (xform->next->type == RTE_CRYPTO_SYM_XFORM_AUTH)
+ return ARMV8_CRYPTO_CHAIN_CIPHER_AUTH;
+ }
+
+ return ARMV8_CRYPTO_CHAIN_NOT_SUPPORTED;
+}
+
+static inline void
+auth_hmac_pad_prepare(struct armv8_crypto_session *sess,
+ const struct rte_crypto_sym_xform *xform)
+{
+ size_t i;
+
+ /* Generate i_key_pad and o_key_pad */
+ memset(sess->auth.hmac.i_key_pad, 0, sizeof(sess->auth.hmac.i_key_pad));
+ rte_memcpy(sess->auth.hmac.i_key_pad, sess->auth.hmac.key,
+ xform->auth.key.length);
+ memset(sess->auth.hmac.o_key_pad, 0, sizeof(sess->auth.hmac.o_key_pad));
+ rte_memcpy(sess->auth.hmac.o_key_pad, sess->auth.hmac.key,
+ xform->auth.key.length);
+ /*
+ * XOR key with IPAD/OPAD values to obtain i_key_pad
+ * and o_key_pad.
+ * Byte-by-byte operation may seem to be the less efficient
+ * here but in fact it's the opposite.
+ * The result ASM code is likely operate on NEON registers
+ * (load auth key to Qx, load IPAD/OPAD to multiple
+ * elements of Qy, eor 128 bits at once).
+ */
+ for (i = 0; i < SHA_BLOCK_MAX; i++) {
+ sess->auth.hmac.i_key_pad[i] ^= HMAC_IPAD_VALUE;
+ sess->auth.hmac.o_key_pad[i] ^= HMAC_OPAD_VALUE;
+ }
+}
+
+static inline int
+auth_set_prerequisites(struct armv8_crypto_session *sess,
+ const struct rte_crypto_sym_xform *xform)
+{
+ uint8_t partial[64] = { 0 };
+ int error;
+
+ switch (xform->auth.algo) {
+ case RTE_CRYPTO_AUTH_SHA1_HMAC:
+ /*
+ * Generate authentication key, i_key_pad and o_key_pad.
+ */
+ /* Zero memory under key */
+ memset(sess->auth.hmac.key, 0, SHA1_AUTH_KEY_LENGTH);
+
+ if (xform->auth.key.length > SHA1_AUTH_KEY_LENGTH) {
+ /*
+ * In case the key is longer than 160 bits
+ * the algorithm will use SHA1(key) instead.
+ */
+ error = sha1_block(NULL, xform->auth.key.data,
+ sess->auth.hmac.key, xform->auth.key.length);
+ if (error != 0)
+ return -1;
+ } else {
+ /*
+ * Now copy the given authentication key to the session
+ * key assuming that the session key is zeroed there is
+ * no need for additional zero padding if the key is
+ * shorter than SHA1_AUTH_KEY_LENGTH.
+ */
+ rte_memcpy(sess->auth.hmac.key, xform->auth.key.data,
+ xform->auth.key.length);
+ }
+
+ /* Prepare HMAC padding: key|pattern */
+ auth_hmac_pad_prepare(sess, xform);
+ /*
+ * Calculate partial hash values for i_key_pad and o_key_pad.
+ * Will be used as initialization state for final HMAC.
+ */
+ error = sha1_block_partial(NULL, sess->auth.hmac.i_key_pad,
+ partial, SHA1_BLOCK_SIZE);
+ if (error != 0)
+ return -1;
+ memcpy(sess->auth.hmac.i_key_pad, partial, SHA1_BLOCK_SIZE);
+
+ error = sha1_block_partial(NULL, sess->auth.hmac.o_key_pad,
+ partial, SHA1_BLOCK_SIZE);
+ if (error != 0)
+ return -1;
+ memcpy(sess->auth.hmac.o_key_pad, partial, SHA1_BLOCK_SIZE);
+
+ break;
+ case RTE_CRYPTO_AUTH_SHA256_HMAC:
+ /*
+ * Generate authentication key, i_key_pad and o_key_pad.
+ */
+ /* Zero memory under key */
+ memset(sess->auth.hmac.key, 0, SHA256_AUTH_KEY_LENGTH);
+
+ if (xform->auth.key.length > SHA256_AUTH_KEY_LENGTH) {
+ /*
+ * In case the key is longer than 256 bits
+ * the algorithm will use SHA256(key) instead.
+ */
+ error = sha256_block(NULL, xform->auth.key.data,
+ sess->auth.hmac.key, xform->auth.key.length);
+ if (error != 0)
+ return -1;
+ } else {
+ /*
+ * Now copy the given authentication key to the session
+ * key assuming that the session key is zeroed there is
+ * no need for additional zero padding if the key is
+ * shorter than SHA256_AUTH_KEY_LENGTH.
+ */
+ rte_memcpy(sess->auth.hmac.key, xform->auth.key.data,
+ xform->auth.key.length);
+ }
+
+ /* Prepare HMAC padding: key|pattern */
+ auth_hmac_pad_prepare(sess, xform);
+ /*
+ * Calculate partial hash values for i_key_pad and o_key_pad.
+ * Will be used as initialization state for final HMAC.
+ */
+ error = sha256_block_partial(NULL, sess->auth.hmac.i_key_pad,
+ partial, SHA256_BLOCK_SIZE);
+ if (error != 0)
+ return -1;
+ memcpy(sess->auth.hmac.i_key_pad, partial, SHA256_BLOCK_SIZE);
+
+ error = sha256_block_partial(NULL, sess->auth.hmac.o_key_pad,
+ partial, SHA256_BLOCK_SIZE);
+ if (error != 0)
+ return -1;
+ memcpy(sess->auth.hmac.o_key_pad, partial, SHA256_BLOCK_SIZE);
+
+ break;
+ default:
+ break;
+ }
+
+ return 0;
+}
+
+static inline int
+cipher_set_prerequisites(struct armv8_crypto_session *sess,
+ const struct rte_crypto_sym_xform *xform)
+{
+ crypto_key_sched_t cipher_key_sched;
+
+ cipher_key_sched = sess->cipher.key_sched;
+ if (likely(cipher_key_sched != NULL)) {
+ /* Set up cipher session key */
+ cipher_key_sched(sess->cipher.key.data, xform->cipher.key.data);
+ }
+
+ return 0;
+}
+
+static int
+armv8_crypto_set_session_chained_parameters(struct armv8_crypto_session *sess,
+ const struct rte_crypto_sym_xform *cipher_xform,
+ const struct rte_crypto_sym_xform *auth_xform)
+{
+ enum armv8_crypto_chain_order order;
+ enum armv8_crypto_cipher_operation cop;
+ enum rte_crypto_cipher_algorithm calg;
+ enum rte_crypto_auth_algorithm aalg;
+
+ /* Validate and prepare scratch order of combined operations */
+ switch (sess->chain_order) {
+ case ARMV8_CRYPTO_CHAIN_CIPHER_AUTH:
+ case ARMV8_CRYPTO_CHAIN_AUTH_CIPHER:
+ order = sess->chain_order;
+ break;
+ default:
+ return -EINVAL;
+ }
+ /* Select cipher direction */
+ sess->cipher.direction = cipher_xform->cipher.op;
+ /* Select cipher key */
+ sess->cipher.key.length = cipher_xform->cipher.key.length;
+ /* Set cipher direction */
+ cop = sess->cipher.direction;
+ /* Set cipher algorithm */
+ calg = cipher_xform->cipher.algo;
+
+ /* Select cipher algo */
+ switch (calg) {
+ /* Cover supported cipher algorithms */
+ case RTE_CRYPTO_CIPHER_AES_CBC:
+ sess->cipher.algo = calg;
+ /* IV len is always 16 bytes (block size) for AES CBC */
+ sess->cipher.iv_len = 16;
+ break;
+ default:
+ return -EINVAL;
+ }
+ /* Select auth generate/verify */
+ sess->auth.operation = auth_xform->auth.op;
+
+ /* Select auth algo */
+ switch (auth_xform->auth.algo) {
+ /* Cover supported hash algorithms */
+ case RTE_CRYPTO_AUTH_SHA1_HMAC:
+ case RTE_CRYPTO_AUTH_SHA256_HMAC: /* Fall through */
+ aalg = auth_xform->auth.algo;
+ sess->auth.mode = ARMV8_CRYPTO_AUTH_AS_HMAC;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ /* Verify supported key lengths and extract proper algorithm */
+ switch (cipher_xform->cipher.key.length << 3) {
+ case 128:
+ sess->crypto_func =
+ CRYPTO_GET_ALGO(order, cop, calg, aalg, 128);
+ sess->cipher.key_sched =
+ CRYPTO_GET_KEY_SCHED(cop, calg, 128);
+ break;
+ case 192:
+ case 256:
+ /* These key lengths are not supported yet */
+ default: /* Fall through */
+ sess->crypto_func = NULL;
+ sess->cipher.key_sched = NULL;
+ return -EINVAL;
+ }
+
+ if (unlikely(sess->crypto_func == NULL)) {
+ /*
+ * If we got here that means that there must be a bug
+ * in the algorithms selection above. Nevertheless keep
+ * it here to catch bug immediately and avoid NULL pointer
+ * dereference in OPs processing.
+ */
+ ARMV8_CRYPTO_LOG_ERR(
+ "No appropriate crypto function for given parameters");
+ return -EINVAL;
+ }
+
+ /* Set up cipher session prerequisites */
+ if (cipher_set_prerequisites(sess, cipher_xform) != 0)
+ return -EINVAL;
+
+ /* Set up authentication session prerequisites */
+ if (auth_set_prerequisites(sess, auth_xform) != 0)
+ return -EINVAL;
+
+ return 0;
+}
+
+/** Parse crypto xform chain and set private session parameters */
+int
+armv8_crypto_set_session_parameters(struct armv8_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;
+ bool is_chained_op;
+ int ret;
+
+ /* Filter out spurious/broken requests */
+ if (xform == NULL)
+ return -EINVAL;
+
+ sess->chain_order = armv8_crypto_get_chain_order(xform);
+ switch (sess->chain_order) {
+ case ARMV8_CRYPTO_CHAIN_CIPHER_AUTH:
+ cipher_xform = xform;
+ auth_xform = xform->next;
+ is_chained_op = true;
+ break;
+ case ARMV8_CRYPTO_CHAIN_AUTH_CIPHER:
+ auth_xform = xform;
+ cipher_xform = xform->next;
+ is_chained_op = true;
+ break;
+ default:
+ is_chained_op = false;
+ return -EINVAL;
+ }
+
+ if (is_chained_op) {
+ ret = armv8_crypto_set_session_chained_parameters(sess,
+ cipher_xform, auth_xform);
+ if (unlikely(ret != 0)) {
+ ARMV8_CRYPTO_LOG_ERR(
+ "Invalid/unsupported chained (cipher/auth) parameters");
+ return -EINVAL;
+ }
+ } else {
+ ARMV8_CRYPTO_LOG_ERR("Invalid/unsupported operation");
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+/** Provide session for operation */
+static inline struct armv8_crypto_session *
+get_session(struct armv8_crypto_qp *qp, struct rte_crypto_op *op)
+{
+ struct armv8_crypto_session *sess = NULL;
+
+ if (op->sym->sess_type == RTE_CRYPTO_SYM_OP_WITH_SESSION) {
+ /* get existing session */
+ if (likely(op->sym->session != NULL &&
+ op->sym->session->dev_type ==
+ RTE_CRYPTODEV_ARMV8_PMD)) {
+ sess = (struct armv8_crypto_session *)
+ op->sym->session->_private;
+ }
+ } else {
+ /* provide internal session */
+ void *_sess = NULL;
+
+ if (!rte_mempool_get(qp->sess_mp, (void **)&_sess)) {
+ sess = (struct armv8_crypto_session *)
+ ((struct rte_cryptodev_sym_session *)_sess)
+ ->_private;
+
+ if (unlikely(armv8_crypto_set_session_parameters(
+ sess, op->sym->xform) != 0)) {
+ rte_mempool_put(qp->sess_mp, _sess);
+ sess = NULL;
+ } else
+ op->sym->session = _sess;
+ }
+ }
+
+ if (unlikely(sess == NULL))
+ op->status = RTE_CRYPTO_OP_STATUS_INVALID_SESSION;
+
+ return sess;
+}
+
+/*
+ *------------------------------------------------------------------------------
+ * Process Operations
+ *------------------------------------------------------------------------------
+ */
+
+/*----------------------------------------------------------------------------*/
+
+/** Process cipher operation */
+static inline void
+process_armv8_chained_op
+ (struct rte_crypto_op *op, struct armv8_crypto_session *sess,
+ struct rte_mbuf *mbuf_src, struct rte_mbuf *mbuf_dst)
+{
+ crypto_func_t crypto_func;
+ crypto_arg_t arg;
+ struct rte_mbuf *m_asrc, *m_adst;
+ uint8_t *csrc, *cdst;
+ uint8_t *adst, *asrc;
+ uint64_t clen, alen;
+ int error;
+
+ clen = op->sym->cipher.data.length;
+ alen = op->sym->auth.data.length;
+
+ csrc = rte_pktmbuf_mtod_offset(mbuf_src, uint8_t *,
+ op->sym->cipher.data.offset);
+ cdst = rte_pktmbuf_mtod_offset(mbuf_dst, uint8_t *,
+ op->sym->cipher.data.offset);
+
+ switch (sess->chain_order) {
+ case ARMV8_CRYPTO_CHAIN_CIPHER_AUTH:
+ m_asrc = m_adst = mbuf_dst;
+ break;
+ case ARMV8_CRYPTO_CHAIN_AUTH_CIPHER:
+ m_asrc = mbuf_src;
+ m_adst = mbuf_dst;
+ break;
+ default:
+ op->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS;
+ return;
+ }
+ asrc = rte_pktmbuf_mtod_offset(m_asrc, uint8_t *,
+ op->sym->auth.data.offset);
+
+ switch (sess->auth.mode) {
+ case ARMV8_CRYPTO_AUTH_AS_AUTH:
+ /* Nothing to do here, just verify correct option */
+ break;
+ case ARMV8_CRYPTO_AUTH_AS_HMAC:
+ arg.digest.hmac.key = sess->auth.hmac.key;
+ arg.digest.hmac.i_key_pad = sess->auth.hmac.i_key_pad;
+ arg.digest.hmac.o_key_pad = sess->auth.hmac.o_key_pad;
+ break;
+ default:
+ op->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS;
+ return;
+ }
+
+ if (sess->auth.operation == RTE_CRYPTO_AUTH_OP_GENERATE) {
+ adst = op->sym->auth.digest.data;
+ if (adst == NULL) {
+ adst = rte_pktmbuf_mtod_offset(m_adst,
+ uint8_t *,
+ op->sym->auth.data.offset +
+ op->sym->auth.data.length);
+ }
+ } else {
+ adst = (uint8_t *)rte_pktmbuf_append(m_asrc,
+ op->sym->auth.digest.length);
+ }
+
+ if (unlikely(op->sym->cipher.iv.length != sess->cipher.iv_len)) {
+ op->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS;
+ return;
+ }
+
+ arg.cipher.iv = op->sym->cipher.iv.data;
+ arg.cipher.key = sess->cipher.key.data;
+ /* Acquire combined mode function */
+ crypto_func = sess->crypto_func;
+ ARMV8_CRYPTO_ASSERT(crypto_func != NULL);
+ error = crypto_func(csrc, cdst, clen, asrc, adst, alen, &arg);
+ if (error != 0) {
+ op->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS;
+ return;
+ }
+
+ op->status = RTE_CRYPTO_OP_STATUS_SUCCESS;
+ if (sess->auth.operation == RTE_CRYPTO_AUTH_OP_VERIFY) {
+ if (memcmp(adst, op->sym->auth.digest.data,
+ op->sym->auth.digest.length) != 0) {
+ op->status = RTE_CRYPTO_OP_STATUS_AUTH_FAILED;
+ }
+ /* Trim area used for digest from mbuf. */
+ rte_pktmbuf_trim(m_asrc,
+ op->sym->auth.digest.length);
+ }
+}
+
+/** Process crypto operation for mbuf */
+static inline int
+process_op(const struct armv8_crypto_qp *qp, struct rte_crypto_op *op,
+ struct armv8_crypto_session *sess)
+{
+ struct rte_mbuf *msrc, *mdst;
+
+ msrc = op->sym->m_src;
+ mdst = op->sym->m_dst ? op->sym->m_dst : op->sym->m_src;
+
+ op->status = RTE_CRYPTO_OP_STATUS_NOT_PROCESSED;
+
+ switch (sess->chain_order) {
+ case ARMV8_CRYPTO_CHAIN_CIPHER_AUTH:
+ case ARMV8_CRYPTO_CHAIN_AUTH_CIPHER: /* Fall through */
+ process_armv8_chained_op(op, sess, msrc, mdst);
+ break;
+ default:
+ op->status = RTE_CRYPTO_OP_STATUS_ERROR;
+ break;
+ }
+
+ /* Free session if a session-less crypto op */
+ if (op->sym->sess_type == RTE_CRYPTO_SYM_OP_SESSIONLESS) {
+ memset(sess, 0, sizeof(struct armv8_crypto_session));
+ rte_mempool_put(qp->sess_mp, op->sym->session);
+ op->sym->session = NULL;
+ }
+
+ if (op->status == RTE_CRYPTO_OP_STATUS_NOT_PROCESSED)
+ op->status = RTE_CRYPTO_OP_STATUS_SUCCESS;
+
+ if (unlikely(op->status == RTE_CRYPTO_OP_STATUS_ERROR))
+ return -1;
+
+ return 0;
+}
+
+/*
+ *------------------------------------------------------------------------------
+ * PMD Framework
+ *------------------------------------------------------------------------------
+ */
+
+/** Enqueue burst */
+static uint16_t
+armv8_crypto_pmd_enqueue_burst(void *queue_pair, struct rte_crypto_op **ops,
+ uint16_t nb_ops)
+{
+ struct armv8_crypto_session *sess;
+ struct armv8_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;
+ }
+
+ retval = rte_ring_enqueue_burst(qp->processed_ops, (void *)ops, i,
+ NULL);
+ qp->stats.enqueued_count += retval;
+
+ return retval;
+
+enqueue_err:
+ retval = rte_ring_enqueue_burst(qp->processed_ops, (void *)ops, i,
+ NULL);
+ if (ops[i] != NULL)
+ ops[i]->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS;
+
+ qp->stats.enqueue_err_count++;
+ return retval;
+}
+
+/** Dequeue burst */
+static uint16_t
+armv8_crypto_pmd_dequeue_burst(void *queue_pair, struct rte_crypto_op **ops,
+ uint16_t nb_ops)
+{
+ struct armv8_crypto_qp *qp = queue_pair;
+
+ unsigned int nb_dequeued = 0;
+
+ nb_dequeued = rte_ring_dequeue_burst(qp->processed_ops,
+ (void **)ops, nb_ops, NULL);
+ qp->stats.dequeued_count += nb_dequeued;
+
+ return nb_dequeued;
+}
+
+/** Create ARMv8 crypto device */
+static int
+cryptodev_armv8_crypto_create(const char *name,
+ struct rte_vdev_device *vdev,
+ struct rte_crypto_vdev_init_params *init_params)
+{
+ struct rte_cryptodev *dev;
+ struct armv8_crypto_private *internals;
+
+ /* Check CPU for support for AES instruction set */
+ if (!rte_cpu_get_flag_enabled(RTE_CPUFLAG_AES)) {
+ ARMV8_CRYPTO_LOG_ERR(
+ "AES instructions not supported by CPU");
+ return -EFAULT;
+ }
+
+ /* Check CPU for support for SHA instruction set */
+ if (!rte_cpu_get_flag_enabled(RTE_CPUFLAG_SHA1) ||
+ !rte_cpu_get_flag_enabled(RTE_CPUFLAG_SHA2)) {
+ ARMV8_CRYPTO_LOG_ERR(
+ "SHA1/SHA2 instructions not supported by CPU");
+ return -EFAULT;
+ }
+
+ /* Check CPU for support for Advance SIMD instruction set */
+ if (!rte_cpu_get_flag_enabled(RTE_CPUFLAG_NEON)) {
+ ARMV8_CRYPTO_LOG_ERR(
+ "Advanced SIMD instructions not supported by CPU");
+ return -EFAULT;
+ }
+
+ if (init_params->name[0] == '\0')
+ snprintf(init_params->name, sizeof(init_params->name),
+ "%s", name);
+
+ dev = rte_cryptodev_pmd_virtual_dev_init(init_params->name,
+ sizeof(struct armv8_crypto_private),
+ init_params->socket_id);
+ if (dev == NULL) {
+ ARMV8_CRYPTO_LOG_ERR("failed to create cryptodev vdev");
+ goto init_error;
+ }
+
+ dev->dev_type = RTE_CRYPTODEV_ARMV8_PMD;
+ dev->dev_ops = rte_armv8_crypto_pmd_ops;
+
+ /* register rx/tx burst functions for data path */
+ dev->dequeue_burst = armv8_crypto_pmd_dequeue_burst;
+ dev->enqueue_burst = armv8_crypto_pmd_enqueue_burst;
+
+ dev->feature_flags = RTE_CRYPTODEV_FF_SYMMETRIC_CRYPTO |
+ RTE_CRYPTODEV_FF_SYM_OPERATION_CHAINING |
+ RTE_CRYPTODEV_FF_CPU_NEON |
+ RTE_CRYPTODEV_FF_CPU_ARM_CE;
+
+ /* 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;
+
+ return 0;
+
+init_error:
+ ARMV8_CRYPTO_LOG_ERR(
+ "driver %s: cryptodev_armv8_crypto_create failed",
+ init_params->name);
+
+ cryptodev_armv8_crypto_uninit(vdev);
+ return -EFAULT;
+}
+
+/** Initialise ARMv8 crypto device */
+static int
+cryptodev_armv8_crypto_init(struct rte_vdev_device *vdev)
+{
+ 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(),
+ {0}
+ };
+ const char *name;
+ const char *input_args;
+
+ name = rte_vdev_device_name(vdev);
+ if (name == NULL)
+ return -EINVAL;
+ input_args = rte_vdev_device_args(vdev);
+ 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);
+ if (init_params.name[0] != '\0') {
+ RTE_LOG(INFO, PMD, " User defined name = %s\n",
+ init_params.name);
+ }
+ 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_armv8_crypto_create(name, vdev, &init_params);
+}
+
+/** Uninitialise ARMv8 crypto device */
+static int
+cryptodev_armv8_crypto_uninit(struct rte_vdev_device *vdev)
+{
+ const char *name;
+
+ name = rte_vdev_device_name(vdev);
+ if (name == NULL)
+ return -EINVAL;
+
+ RTE_LOG(INFO, PMD,
+ "Closing ARMv8 crypto device %s on numa socket %u\n",
+ name, rte_socket_id());
+
+ return 0;
+}
+
+static struct rte_vdev_driver armv8_crypto_drv = {
+ .probe = cryptodev_armv8_crypto_init,
+ .remove = cryptodev_armv8_crypto_uninit
+};
+
+RTE_PMD_REGISTER_VDEV(CRYPTODEV_NAME_ARMV8_PMD, armv8_crypto_drv);
+RTE_PMD_REGISTER_ALIAS(CRYPTODEV_NAME_ARMV8_PMD, cryptodev_armv8_pmd);
+RTE_PMD_REGISTER_PARAM_STRING(CRYPTODEV_NAME_ARMV8_PMD,
+ "max_nb_queue_pairs=<int> "
+ "max_nb_sessions=<int> "
+ "socket_id=<int>");
Code Review / deb_dpdk.git / blobdiff