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33 #include <rte_common.h>
34 #include <rte_hexdump.h>
35 #include <rte_cryptodev.h>
36 #include <rte_cryptodev_pmd.h>
38 #include <rte_malloc.h>
39 #include <rte_cpuflags.h>
41 #include "rte_aesni_mb_pmd_private.h"
44 * Global static parameter used to create a unique name for each AES-NI multi
45 * buffer crypto device.
47 static unsigned unique_name_id;
50 create_unique_device_name(char *name, size_t size)
57 ret = snprintf(name, size, "%s_%u", CRYPTODEV_NAME_AESNI_MB_PMD,
64 typedef void (*hash_one_block_t)(void *data, void *digest);
65 typedef void (*aes_keyexp_t)(void *key, void *enc_exp_keys, void *dec_exp_keys);
68 * Calculate the authentication pre-computes
70 * @param one_block_hash Function pointer to calculate digest on ipad/opad
71 * @param ipad Inner pad output byte array
72 * @param opad Outer pad output byte array
73 * @param hkey Authentication key
74 * @param hkey_len Authentication key length
75 * @param blocksize Block size of selected hash algo
78 calculate_auth_precomputes(hash_one_block_t one_block_hash,
79 uint8_t *ipad, uint8_t *opad,
80 uint8_t *hkey, uint16_t hkey_len,
85 uint8_t ipad_buf[blocksize] __rte_aligned(16);
86 uint8_t opad_buf[blocksize] __rte_aligned(16);
88 /* Setup inner and outer pads */
89 memset(ipad_buf, HMAC_IPAD_VALUE, blocksize);
90 memset(opad_buf, HMAC_OPAD_VALUE, blocksize);
92 /* XOR hash key with inner and outer pads */
93 length = hkey_len > blocksize ? blocksize : hkey_len;
95 for (i = 0; i < length; i++) {
96 ipad_buf[i] ^= hkey[i];
97 opad_buf[i] ^= hkey[i];
100 /* Compute partial hashes */
101 (*one_block_hash)(ipad_buf, ipad);
102 (*one_block_hash)(opad_buf, opad);
105 memset(ipad_buf, 0, blocksize);
106 memset(opad_buf, 0, blocksize);
109 /** Get xform chain order */
111 aesni_mb_get_chain_order(const struct rte_crypto_sym_xform *xform)
114 * Multi-buffer only supports HASH_CIPHER or CIPHER_HASH chained
115 * operations, all other options are invalid, so we must have exactly
116 * 2 xform structs chained together
118 if (xform->next == NULL || xform->next->next != NULL)
121 if (xform->type == RTE_CRYPTO_SYM_XFORM_AUTH &&
122 xform->next->type == RTE_CRYPTO_SYM_XFORM_CIPHER)
125 if (xform->type == RTE_CRYPTO_SYM_XFORM_CIPHER &&
126 xform->next->type == RTE_CRYPTO_SYM_XFORM_AUTH)
132 /** Set session authentication parameters */
134 aesni_mb_set_session_auth_parameters(const struct aesni_mb_ops *mb_ops,
135 struct aesni_mb_session *sess,
136 const struct rte_crypto_sym_xform *xform)
138 hash_one_block_t hash_oneblock_fn;
140 if (xform->type != RTE_CRYPTO_SYM_XFORM_AUTH) {
141 MB_LOG_ERR("Crypto xform struct not of type auth");
145 /* Set Authentication Parameters */
146 if (xform->auth.algo == RTE_CRYPTO_AUTH_AES_XCBC_MAC) {
147 sess->auth.algo = AES_XCBC;
148 (*mb_ops->aux.keyexp.aes_xcbc)(xform->auth.key.data,
149 sess->auth.xcbc.k1_expanded,
150 sess->auth.xcbc.k2, sess->auth.xcbc.k3);
154 switch (xform->auth.algo) {
155 case RTE_CRYPTO_AUTH_MD5_HMAC:
156 sess->auth.algo = MD5;
157 hash_oneblock_fn = mb_ops->aux.one_block.md5;
159 case RTE_CRYPTO_AUTH_SHA1_HMAC:
160 sess->auth.algo = SHA1;
161 hash_oneblock_fn = mb_ops->aux.one_block.sha1;
163 case RTE_CRYPTO_AUTH_SHA224_HMAC:
164 sess->auth.algo = SHA_224;
165 hash_oneblock_fn = mb_ops->aux.one_block.sha224;
167 case RTE_CRYPTO_AUTH_SHA256_HMAC:
168 sess->auth.algo = SHA_256;
169 hash_oneblock_fn = mb_ops->aux.one_block.sha256;
171 case RTE_CRYPTO_AUTH_SHA384_HMAC:
172 sess->auth.algo = SHA_384;
173 hash_oneblock_fn = mb_ops->aux.one_block.sha384;
175 case RTE_CRYPTO_AUTH_SHA512_HMAC:
176 sess->auth.algo = SHA_512;
177 hash_oneblock_fn = mb_ops->aux.one_block.sha512;
180 MB_LOG_ERR("Unsupported authentication algorithm selection");
184 /* Calculate Authentication precomputes */
185 calculate_auth_precomputes(hash_oneblock_fn,
186 sess->auth.pads.inner, sess->auth.pads.outer,
187 xform->auth.key.data,
188 xform->auth.key.length,
189 get_auth_algo_blocksize(sess->auth.algo));
194 /** Set session cipher parameters */
196 aesni_mb_set_session_cipher_parameters(const struct aesni_mb_ops *mb_ops,
197 struct aesni_mb_session *sess,
198 const struct rte_crypto_sym_xform *xform)
200 aes_keyexp_t aes_keyexp_fn;
202 if (xform->type != RTE_CRYPTO_SYM_XFORM_CIPHER) {
203 MB_LOG_ERR("Crypto xform struct not of type cipher");
207 /* Select cipher direction */
208 switch (xform->cipher.op) {
209 case RTE_CRYPTO_CIPHER_OP_ENCRYPT:
210 sess->cipher.direction = ENCRYPT;
212 case RTE_CRYPTO_CIPHER_OP_DECRYPT:
213 sess->cipher.direction = DECRYPT;
216 MB_LOG_ERR("Unsupported cipher operation parameter");
220 /* Select cipher mode */
221 switch (xform->cipher.algo) {
222 case RTE_CRYPTO_CIPHER_AES_CBC:
223 sess->cipher.mode = CBC;
226 MB_LOG_ERR("Unsupported cipher mode parameter");
230 /* Check key length and choose key expansion function */
231 switch (xform->cipher.key.length) {
233 sess->cipher.key_length_in_bytes = AES_128_BYTES;
234 aes_keyexp_fn = mb_ops->aux.keyexp.aes128;
237 sess->cipher.key_length_in_bytes = AES_192_BYTES;
238 aes_keyexp_fn = mb_ops->aux.keyexp.aes192;
241 sess->cipher.key_length_in_bytes = AES_256_BYTES;
242 aes_keyexp_fn = mb_ops->aux.keyexp.aes256;
245 MB_LOG_ERR("Unsupported cipher key length");
249 /* Expanded cipher keys */
250 (*aes_keyexp_fn)(xform->cipher.key.data,
251 sess->cipher.expanded_aes_keys.encode,
252 sess->cipher.expanded_aes_keys.decode);
257 /** Parse crypto xform chain and set private session parameters */
259 aesni_mb_set_session_parameters(const struct aesni_mb_ops *mb_ops,
260 struct aesni_mb_session *sess,
261 const struct rte_crypto_sym_xform *xform)
263 const struct rte_crypto_sym_xform *auth_xform = NULL;
264 const struct rte_crypto_sym_xform *cipher_xform = NULL;
266 /* Select Crypto operation - hash then cipher / cipher then hash */
267 switch (aesni_mb_get_chain_order(xform)) {
269 sess->chain_order = HASH_CIPHER;
271 cipher_xform = xform->next;
274 sess->chain_order = CIPHER_HASH;
275 auth_xform = xform->next;
276 cipher_xform = xform;
279 MB_LOG_ERR("Unsupported operation chain order parameter");
283 if (aesni_mb_set_session_auth_parameters(mb_ops, sess, auth_xform)) {
284 MB_LOG_ERR("Invalid/unsupported authentication parameters");
288 if (aesni_mb_set_session_cipher_parameters(mb_ops, sess,
290 MB_LOG_ERR("Invalid/unsupported cipher parameters");
296 /** Get multi buffer session */
297 static struct aesni_mb_session *
298 get_session(struct aesni_mb_qp *qp, struct rte_crypto_op *op)
300 struct aesni_mb_session *sess = NULL;
302 if (op->sym->sess_type == RTE_CRYPTO_SYM_OP_WITH_SESSION) {
303 if (unlikely(op->sym->session->dev_type !=
304 RTE_CRYPTODEV_AESNI_MB_PMD))
307 sess = (struct aesni_mb_session *)op->sym->session->_private;
311 if (rte_mempool_get(qp->sess_mp, (void **)&_sess))
314 sess = (struct aesni_mb_session *)
315 ((struct rte_cryptodev_sym_session *)_sess)->_private;
317 if (unlikely(aesni_mb_set_session_parameters(qp->ops,
318 sess, op->sym->xform) != 0)) {
319 rte_mempool_put(qp->sess_mp, _sess);
328 * Process a crypto operation and complete a JOB_AES_HMAC job structure for
329 * submission to the multi buffer library for processing.
331 * @param qp queue pair
332 * @param job JOB_AES_HMAC structure to fill
333 * @param m mbuf to process
336 * - Completed JOB_AES_HMAC structure pointer on success
337 * - NULL pointer if completion of JOB_AES_HMAC structure isn't possible
339 static JOB_AES_HMAC *
340 process_crypto_op(struct aesni_mb_qp *qp, struct rte_crypto_op *op,
341 struct aesni_mb_session *session)
345 struct rte_mbuf *m_src = op->sym->m_src, *m_dst;
346 uint16_t m_offset = 0;
348 job = (*qp->ops->job.get_next)(&qp->mb_mgr);
349 if (unlikely(job == NULL))
352 /* Set crypto operation */
353 job->chain_order = session->chain_order;
355 /* Set cipher parameters */
356 job->cipher_direction = session->cipher.direction;
357 job->cipher_mode = session->cipher.mode;
359 job->aes_key_len_in_bytes = session->cipher.key_length_in_bytes;
360 job->aes_enc_key_expanded = session->cipher.expanded_aes_keys.encode;
361 job->aes_dec_key_expanded = session->cipher.expanded_aes_keys.decode;
364 /* Set authentication parameters */
365 job->hash_alg = session->auth.algo;
366 if (job->hash_alg == AES_XCBC) {
367 job->_k1_expanded = session->auth.xcbc.k1_expanded;
368 job->_k2 = session->auth.xcbc.k2;
369 job->_k3 = session->auth.xcbc.k3;
371 job->hashed_auth_key_xor_ipad = session->auth.pads.inner;
372 job->hashed_auth_key_xor_opad = session->auth.pads.outer;
375 /* Mutable crypto operation parameters */
376 if (op->sym->m_dst) {
377 m_src = m_dst = op->sym->m_dst;
379 /* append space for output data to mbuf */
380 char *odata = rte_pktmbuf_append(m_dst,
381 rte_pktmbuf_data_len(op->sym->m_src));
383 MB_LOG_ERR("failed to allocate space in destination "
384 "mbuf for source data");
386 memcpy(odata, rte_pktmbuf_mtod(op->sym->m_src, void*),
387 rte_pktmbuf_data_len(op->sym->m_src));
390 m_offset = op->sym->cipher.data.offset;
393 /* Set digest output location */
394 if (job->cipher_direction == DECRYPT) {
395 job->auth_tag_output = (uint8_t *)rte_pktmbuf_append(m_dst,
396 get_digest_byte_length(job->hash_alg));
398 if (job->auth_tag_output == NULL) {
399 MB_LOG_ERR("failed to allocate space in output mbuf "
404 memset(job->auth_tag_output, 0,
405 sizeof(get_digest_byte_length(job->hash_alg)));
408 job->auth_tag_output = op->sym->auth.digest.data;
412 * Multi-buffer library current only support returning a truncated
413 * digest length as specified in the relevant IPsec RFCs
415 job->auth_tag_output_len_in_bytes =
416 get_truncated_digest_byte_length(job->hash_alg);
418 /* Set IV parameters */
419 job->iv = op->sym->cipher.iv.data;
420 job->iv_len_in_bytes = op->sym->cipher.iv.length;
423 job->src = rte_pktmbuf_mtod(m_src, uint8_t *);
424 job->dst = rte_pktmbuf_mtod_offset(m_dst, uint8_t *, m_offset);
426 job->cipher_start_src_offset_in_bytes = op->sym->cipher.data.offset;
427 job->msg_len_to_cipher_in_bytes = op->sym->cipher.data.length;
429 job->hash_start_src_offset_in_bytes = op->sym->auth.data.offset;
430 job->msg_len_to_hash_in_bytes = op->sym->auth.data.length;
432 /* Set user data to be crypto operation data struct */
434 job->user_data2 = m_dst;
440 * Process a completed job and return rte_mbuf which job processed
442 * @param job JOB_AES_HMAC job to process
445 * - Returns processed mbuf which is trimmed of output digest used in
446 * verification of supplied digest in the case of a HASH_CIPHER operation
447 * - Returns NULL on invalid job
449 static struct rte_crypto_op *
450 post_process_mb_job(struct aesni_mb_qp *qp, JOB_AES_HMAC *job)
452 struct rte_crypto_op *op =
453 (struct rte_crypto_op *)job->user_data;
454 struct rte_mbuf *m_dst =
455 (struct rte_mbuf *)job->user_data2;
457 if (op == NULL || m_dst == NULL)
460 /* set status as successful by default */
461 op->status = RTE_CRYPTO_OP_STATUS_SUCCESS;
463 /* check if job has been processed */
464 if (unlikely(job->status != STS_COMPLETED)) {
465 op->status = RTE_CRYPTO_OP_STATUS_ERROR;
467 } else if (job->chain_order == HASH_CIPHER) {
468 /* Verify digest if required */
469 if (memcmp(job->auth_tag_output, op->sym->auth.digest.data,
470 job->auth_tag_output_len_in_bytes) != 0)
471 op->status = RTE_CRYPTO_OP_STATUS_AUTH_FAILED;
473 /* trim area used for digest from mbuf */
474 rte_pktmbuf_trim(m_dst, get_digest_byte_length(job->hash_alg));
477 /* Free session if a session-less crypto op */
478 if (op->sym->sess_type == RTE_CRYPTO_SYM_OP_SESSIONLESS) {
479 rte_mempool_put(qp->sess_mp, op->sym->session);
480 op->sym->session = NULL;
487 * Process a completed JOB_AES_HMAC job and keep processing jobs until
488 * get_completed_job return NULL
490 * @param qp Queue Pair to process
491 * @param job JOB_AES_HMAC job
494 * - Number of processed jobs
497 handle_completed_jobs(struct aesni_mb_qp *qp, JOB_AES_HMAC *job)
499 struct rte_crypto_op *op = NULL;
500 unsigned processed_jobs = 0;
504 op = post_process_mb_job(qp, job);
506 rte_ring_enqueue(qp->processed_ops, (void *)op);
508 qp->stats.dequeue_err_count++;
509 job = (*qp->ops->job.get_completed_job)(&qp->mb_mgr);
512 return processed_jobs;
516 aesni_mb_pmd_enqueue_burst(void *queue_pair, struct rte_crypto_op **ops,
519 struct aesni_mb_session *sess;
520 struct aesni_mb_qp *qp = queue_pair;
522 JOB_AES_HMAC *job = NULL;
524 int i, processed_jobs = 0;
526 for (i = 0; i < nb_ops; i++) {
527 #ifdef RTE_LIBRTE_AESNI_MB_DEBUG
528 if (unlikely(op->type != RTE_CRYPTO_OP_TYPE_SYMMETRIC)) {
529 MB_LOG_ERR("PMD only supports symmetric crypto "
530 "operation requests, op (%p) is not a "
531 "symmetric operation.", op);
532 qp->stats.enqueue_err_count++;
536 sess = get_session(qp, ops[i]);
537 if (unlikely(sess == NULL)) {
538 qp->stats.enqueue_err_count++;
542 job = process_crypto_op(qp, ops[i], sess);
543 if (unlikely(job == NULL)) {
544 qp->stats.enqueue_err_count++;
549 job = (*qp->ops->job.submit)(&qp->mb_mgr);
552 * If submit returns a processed job then handle it,
553 * before submitting subsequent jobs
556 processed_jobs += handle_completed_jobs(qp, job);
559 if (processed_jobs == 0)
562 qp->stats.enqueued_count += processed_jobs;
567 * If we haven't processed any jobs in submit loop, then flush jobs
568 * queue to stop the output stalling
570 job = (*qp->ops->job.flush_job)(&qp->mb_mgr);
572 qp->stats.enqueued_count += handle_completed_jobs(qp, job);
578 aesni_mb_pmd_dequeue_burst(void *queue_pair, struct rte_crypto_op **ops,
581 struct aesni_mb_qp *qp = queue_pair;
583 unsigned nb_dequeued;
585 nb_dequeued = rte_ring_dequeue_burst(qp->processed_ops,
586 (void **)ops, nb_ops);
587 qp->stats.dequeued_count += nb_dequeued;
593 static int cryptodev_aesni_mb_uninit(const char *name);
596 cryptodev_aesni_mb_create(const char *name,
597 struct rte_crypto_vdev_init_params *init_params)
599 struct rte_cryptodev *dev;
600 char crypto_dev_name[RTE_CRYPTODEV_NAME_MAX_LEN];
601 struct aesni_mb_private *internals;
602 enum aesni_mb_vector_mode vector_mode;
604 /* Check CPU for support for AES instruction set */
605 if (!rte_cpu_get_flag_enabled(RTE_CPUFLAG_AES)) {
606 MB_LOG_ERR("AES instructions not supported by CPU");
610 /* Check CPU for supported vector instruction set */
611 if (rte_cpu_get_flag_enabled(RTE_CPUFLAG_AVX2))
612 vector_mode = RTE_AESNI_MB_AVX2;
613 else if (rte_cpu_get_flag_enabled(RTE_CPUFLAG_AVX))
614 vector_mode = RTE_AESNI_MB_AVX;
615 else if (rte_cpu_get_flag_enabled(RTE_CPUFLAG_SSE4_1))
616 vector_mode = RTE_AESNI_MB_SSE;
618 MB_LOG_ERR("Vector instructions are not supported by CPU");
622 /* create a unique device name */
623 if (create_unique_device_name(crypto_dev_name,
624 RTE_CRYPTODEV_NAME_MAX_LEN) != 0) {
625 MB_LOG_ERR("failed to create unique cryptodev name");
630 dev = rte_cryptodev_pmd_virtual_dev_init(crypto_dev_name,
631 sizeof(struct aesni_mb_private), init_params->socket_id);
633 MB_LOG_ERR("failed to create cryptodev vdev");
637 dev->dev_type = RTE_CRYPTODEV_AESNI_MB_PMD;
638 dev->dev_ops = rte_aesni_mb_pmd_ops;
640 /* register rx/tx burst functions for data path */
641 dev->dequeue_burst = aesni_mb_pmd_dequeue_burst;
642 dev->enqueue_burst = aesni_mb_pmd_enqueue_burst;
644 dev->feature_flags = RTE_CRYPTODEV_FF_SYMMETRIC_CRYPTO |
645 RTE_CRYPTODEV_FF_SYM_OPERATION_CHAINING |
646 RTE_CRYPTODEV_FF_CPU_AESNI;
648 switch (vector_mode) {
649 case RTE_AESNI_MB_SSE:
650 dev->feature_flags |= RTE_CRYPTODEV_FF_CPU_SSE;
652 case RTE_AESNI_MB_AVX:
653 dev->feature_flags |= RTE_CRYPTODEV_FF_CPU_AVX;
655 case RTE_AESNI_MB_AVX2:
656 dev->feature_flags |= RTE_CRYPTODEV_FF_CPU_AVX2;
662 /* Set vector instructions mode supported */
663 internals = dev->data->dev_private;
665 internals->vector_mode = vector_mode;
666 internals->max_nb_queue_pairs = init_params->max_nb_queue_pairs;
667 internals->max_nb_sessions = init_params->max_nb_sessions;
671 MB_LOG_ERR("driver %s: cryptodev_aesni_create failed", name);
673 cryptodev_aesni_mb_uninit(crypto_dev_name);
679 cryptodev_aesni_mb_init(const char *name,
680 const char *input_args)
682 struct rte_crypto_vdev_init_params init_params = {
683 RTE_CRYPTODEV_VDEV_DEFAULT_MAX_NB_QUEUE_PAIRS,
684 RTE_CRYPTODEV_VDEV_DEFAULT_MAX_NB_SESSIONS,
688 rte_cryptodev_parse_vdev_init_params(&init_params, input_args);
690 RTE_LOG(INFO, PMD, "Initialising %s on NUMA node %d\n", name,
691 init_params.socket_id);
692 RTE_LOG(INFO, PMD, " Max number of queue pairs = %d\n",
693 init_params.max_nb_queue_pairs);
694 RTE_LOG(INFO, PMD, " Max number of sessions = %d\n",
695 init_params.max_nb_sessions);
697 return cryptodev_aesni_mb_create(name, &init_params);
701 cryptodev_aesni_mb_uninit(const char *name)
706 RTE_LOG(INFO, PMD, "Closing AESNI crypto device %s on numa socket %u\n",
707 name, rte_socket_id());
712 static struct rte_driver cryptodev_aesni_mb_pmd_drv = {
713 .name = CRYPTODEV_NAME_AESNI_MB_PMD,
715 .init = cryptodev_aesni_mb_init,
716 .uninit = cryptodev_aesni_mb_uninit
719 PMD_REGISTER_DRIVER(cryptodev_aesni_mb_pmd_drv);