1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2016-2018 Intel Corporation
5 #include <rte_common.h>
6 #include <rte_hexdump.h>
7 #include <rte_cryptodev.h>
8 #include <rte_cryptodev_pmd.h>
9 #include <rte_bus_vdev.h>
10 #include <rte_malloc.h>
11 #include <rte_cpuflags.h>
13 #include "rte_snow3g_pmd_private.h"
15 #define SNOW3G_IV_LENGTH 16
16 #define SNOW3G_MAX_BURST 8
19 static uint8_t cryptodev_driver_id;
21 /** Get xform chain order. */
22 static enum snow3g_operation
23 snow3g_get_mode(const struct rte_crypto_sym_xform *xform)
26 return SNOW3G_OP_NOT_SUPPORTED;
29 if (xform->next->next != NULL)
30 return SNOW3G_OP_NOT_SUPPORTED;
32 if (xform->type == RTE_CRYPTO_SYM_XFORM_AUTH) {
33 if (xform->next == NULL)
34 return SNOW3G_OP_ONLY_AUTH;
35 else if (xform->next->type == RTE_CRYPTO_SYM_XFORM_CIPHER)
36 return SNOW3G_OP_AUTH_CIPHER;
38 return SNOW3G_OP_NOT_SUPPORTED;
41 if (xform->type == RTE_CRYPTO_SYM_XFORM_CIPHER) {
42 if (xform->next == NULL)
43 return SNOW3G_OP_ONLY_CIPHER;
44 else if (xform->next->type == RTE_CRYPTO_SYM_XFORM_AUTH)
45 return SNOW3G_OP_CIPHER_AUTH;
47 return SNOW3G_OP_NOT_SUPPORTED;
50 return SNOW3G_OP_NOT_SUPPORTED;
54 /** Parse crypto xform chain and set private session parameters. */
56 snow3g_set_session_parameters(struct snow3g_session *sess,
57 const struct rte_crypto_sym_xform *xform)
59 const struct rte_crypto_sym_xform *auth_xform = NULL;
60 const struct rte_crypto_sym_xform *cipher_xform = NULL;
61 enum snow3g_operation mode;
63 /* Select Crypto operation - hash then cipher / cipher then hash */
64 mode = snow3g_get_mode(xform);
67 case SNOW3G_OP_CIPHER_AUTH:
68 auth_xform = xform->next;
71 case SNOW3G_OP_ONLY_CIPHER:
74 case SNOW3G_OP_AUTH_CIPHER:
75 cipher_xform = xform->next;
77 case SNOW3G_OP_ONLY_AUTH:
80 case SNOW3G_OP_NOT_SUPPORTED:
82 SNOW3G_LOG(ERR, "Unsupported operation chain order parameter");
87 /* Only SNOW 3G UEA2 supported */
88 if (cipher_xform->cipher.algo != RTE_CRYPTO_CIPHER_SNOW3G_UEA2)
91 if (cipher_xform->cipher.iv.length != SNOW3G_IV_LENGTH) {
92 SNOW3G_LOG(ERR, "Wrong IV length");
95 sess->cipher_iv_offset = cipher_xform->cipher.iv.offset;
98 sso_snow3g_init_key_sched(cipher_xform->cipher.key.data,
99 &sess->pKeySched_cipher);
103 /* Only SNOW 3G UIA2 supported */
104 if (auth_xform->auth.algo != RTE_CRYPTO_AUTH_SNOW3G_UIA2)
107 if (auth_xform->auth.digest_length != SNOW3G_DIGEST_LENGTH) {
108 SNOW3G_LOG(ERR, "Wrong digest length");
112 sess->auth_op = auth_xform->auth.op;
114 if (auth_xform->auth.iv.length != SNOW3G_IV_LENGTH) {
115 SNOW3G_LOG(ERR, "Wrong IV length");
118 sess->auth_iv_offset = auth_xform->auth.iv.offset;
121 sso_snow3g_init_key_sched(auth_xform->auth.key.data,
122 &sess->pKeySched_hash);
131 /** Get SNOW 3G session. */
132 static struct snow3g_session *
133 snow3g_get_session(struct snow3g_qp *qp, struct rte_crypto_op *op)
135 struct snow3g_session *sess = NULL;
137 if (op->sess_type == RTE_CRYPTO_OP_WITH_SESSION) {
138 if (likely(op->sym->session != NULL))
139 sess = (struct snow3g_session *)
140 get_sym_session_private_data(
142 cryptodev_driver_id);
145 void *_sess_private_data = NULL;
147 if (rte_mempool_get(qp->sess_mp, (void **)&_sess))
150 if (rte_mempool_get(qp->sess_mp_priv,
151 (void **)&_sess_private_data))
154 sess = (struct snow3g_session *)_sess_private_data;
156 if (unlikely(snow3g_set_session_parameters(sess,
157 op->sym->xform) != 0)) {
158 rte_mempool_put(qp->sess_mp, _sess);
159 rte_mempool_put(qp->sess_mp_priv, _sess_private_data);
162 op->sym->session = (struct rte_cryptodev_sym_session *)_sess;
163 set_sym_session_private_data(op->sym->session,
164 cryptodev_driver_id, _sess_private_data);
167 if (unlikely(sess == NULL))
168 op->status = RTE_CRYPTO_OP_STATUS_INVALID_SESSION;
174 /** Encrypt/decrypt mbufs with same cipher key. */
176 process_snow3g_cipher_op(struct rte_crypto_op **ops,
177 struct snow3g_session *session,
181 uint8_t processed_ops = 0;
182 uint8_t *src[SNOW3G_MAX_BURST], *dst[SNOW3G_MAX_BURST];
183 uint8_t *iv[SNOW3G_MAX_BURST];
184 uint32_t num_bytes[SNOW3G_MAX_BURST];
186 for (i = 0; i < num_ops; i++) {
187 src[i] = rte_pktmbuf_mtod(ops[i]->sym->m_src, uint8_t *) +
188 (ops[i]->sym->cipher.data.offset >> 3);
189 dst[i] = ops[i]->sym->m_dst ?
190 rte_pktmbuf_mtod(ops[i]->sym->m_dst, uint8_t *) +
191 (ops[i]->sym->cipher.data.offset >> 3) :
192 rte_pktmbuf_mtod(ops[i]->sym->m_src, uint8_t *) +
193 (ops[i]->sym->cipher.data.offset >> 3);
194 iv[i] = rte_crypto_op_ctod_offset(ops[i], uint8_t *,
195 session->cipher_iv_offset);
196 num_bytes[i] = ops[i]->sym->cipher.data.length >> 3;
201 sso_snow3g_f8_n_buffer(&session->pKeySched_cipher, iv, src, dst,
202 num_bytes, processed_ops);
204 return processed_ops;
207 /** Encrypt/decrypt mbuf (bit level function). */
209 process_snow3g_cipher_op_bit(struct rte_crypto_op *op,
210 struct snow3g_session *session)
214 uint32_t length_in_bits, offset_in_bits;
216 offset_in_bits = op->sym->cipher.data.offset;
217 src = rte_pktmbuf_mtod(op->sym->m_src, uint8_t *);
218 if (op->sym->m_dst == NULL) {
219 op->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS;
220 SNOW3G_LOG(ERR, "bit-level in-place not supported\n");
223 dst = rte_pktmbuf_mtod(op->sym->m_dst, uint8_t *);
224 iv = rte_crypto_op_ctod_offset(op, uint8_t *,
225 session->cipher_iv_offset);
226 length_in_bits = op->sym->cipher.data.length;
228 sso_snow3g_f8_1_buffer_bit(&session->pKeySched_cipher, iv,
229 src, dst, length_in_bits, offset_in_bits);
234 /** Generate/verify hash from mbufs with same hash key. */
236 process_snow3g_hash_op(struct snow3g_qp *qp, struct rte_crypto_op **ops,
237 struct snow3g_session *session,
241 uint8_t processed_ops = 0;
243 uint32_t length_in_bits;
246 for (i = 0; i < num_ops; i++) {
247 /* Data must be byte aligned */
248 if ((ops[i]->sym->auth.data.offset % BYTE_LEN) != 0) {
249 ops[i]->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS;
250 SNOW3G_LOG(ERR, "Offset");
254 length_in_bits = ops[i]->sym->auth.data.length;
256 src = rte_pktmbuf_mtod(ops[i]->sym->m_src, uint8_t *) +
257 (ops[i]->sym->auth.data.offset >> 3);
258 iv = rte_crypto_op_ctod_offset(ops[i], uint8_t *,
259 session->auth_iv_offset);
261 if (session->auth_op == RTE_CRYPTO_AUTH_OP_VERIFY) {
262 dst = qp->temp_digest;
264 sso_snow3g_f9_1_buffer(&session->pKeySched_hash,
266 length_in_bits, dst);
268 if (memcmp(dst, ops[i]->sym->auth.digest.data,
269 SNOW3G_DIGEST_LENGTH) != 0)
270 ops[i]->status = RTE_CRYPTO_OP_STATUS_AUTH_FAILED;
272 dst = ops[i]->sym->auth.digest.data;
274 sso_snow3g_f9_1_buffer(&session->pKeySched_hash,
276 length_in_bits, dst);
281 return processed_ops;
284 /** Process a batch of crypto ops which shares the same session. */
286 process_ops(struct rte_crypto_op **ops, struct snow3g_session *session,
287 struct snow3g_qp *qp, uint8_t num_ops,
288 uint16_t *accumulated_enqueued_ops)
291 unsigned enqueued_ops, processed_ops;
293 #ifdef RTE_LIBRTE_PMD_SNOW3G_DEBUG
294 for (i = 0; i < num_ops; i++) {
295 if (!rte_pktmbuf_is_contiguous(ops[i]->sym->m_src) ||
296 (ops[i]->sym->m_dst != NULL &&
297 !rte_pktmbuf_is_contiguous(
298 ops[i]->sym->m_dst))) {
299 SNOW3G_LOG(ERR, "PMD supports only contiguous mbufs, "
300 "op (%p) provides noncontiguous mbuf as "
301 "source/destination buffer.\n", ops[i]);
302 ops[i]->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS;
308 switch (session->op) {
309 case SNOW3G_OP_ONLY_CIPHER:
310 processed_ops = process_snow3g_cipher_op(ops,
313 case SNOW3G_OP_ONLY_AUTH:
314 processed_ops = process_snow3g_hash_op(qp, ops, session,
317 case SNOW3G_OP_CIPHER_AUTH:
318 processed_ops = process_snow3g_cipher_op(ops, session,
320 process_snow3g_hash_op(qp, ops, session, processed_ops);
322 case SNOW3G_OP_AUTH_CIPHER:
323 processed_ops = process_snow3g_hash_op(qp, ops, session,
325 process_snow3g_cipher_op(ops, session, processed_ops);
328 /* Operation not supported. */
332 for (i = 0; i < num_ops; i++) {
334 * If there was no error/authentication failure,
335 * change status to successful.
337 if (ops[i]->status == RTE_CRYPTO_OP_STATUS_NOT_PROCESSED)
338 ops[i]->status = RTE_CRYPTO_OP_STATUS_SUCCESS;
339 /* Free session if a session-less crypto op. */
340 if (ops[i]->sess_type == RTE_CRYPTO_OP_SESSIONLESS) {
341 memset(session, 0, sizeof(struct snow3g_session));
342 memset(ops[i]->sym->session, 0,
343 rte_cryptodev_sym_get_existing_header_session_size(
344 ops[i]->sym->session));
345 rte_mempool_put(qp->sess_mp_priv, session);
346 rte_mempool_put(qp->sess_mp, ops[i]->sym->session);
347 ops[i]->sym->session = NULL;
351 enqueued_ops = rte_ring_enqueue_burst(qp->processed_ops,
352 (void **)ops, processed_ops, NULL);
353 qp->qp_stats.enqueued_count += enqueued_ops;
354 *accumulated_enqueued_ops += enqueued_ops;
359 /** Process a crypto op with length/offset in bits. */
361 process_op_bit(struct rte_crypto_op *op, struct snow3g_session *session,
362 struct snow3g_qp *qp, uint16_t *accumulated_enqueued_ops)
364 unsigned enqueued_op, processed_op;
366 switch (session->op) {
367 case SNOW3G_OP_ONLY_CIPHER:
368 processed_op = process_snow3g_cipher_op_bit(op,
371 case SNOW3G_OP_ONLY_AUTH:
372 processed_op = process_snow3g_hash_op(qp, &op, session, 1);
374 case SNOW3G_OP_CIPHER_AUTH:
375 processed_op = process_snow3g_cipher_op_bit(op, session);
376 if (processed_op == 1)
377 process_snow3g_hash_op(qp, &op, session, 1);
379 case SNOW3G_OP_AUTH_CIPHER:
380 processed_op = process_snow3g_hash_op(qp, &op, session, 1);
381 if (processed_op == 1)
382 process_snow3g_cipher_op_bit(op, session);
385 /* Operation not supported. */
390 * If there was no error/authentication failure,
391 * change status to successful.
393 if (op->status == RTE_CRYPTO_OP_STATUS_NOT_PROCESSED)
394 op->status = RTE_CRYPTO_OP_STATUS_SUCCESS;
396 /* Free session if a session-less crypto op. */
397 if (op->sess_type == RTE_CRYPTO_OP_SESSIONLESS) {
398 memset(op->sym->session, 0, sizeof(struct snow3g_session));
399 rte_cryptodev_sym_session_free(op->sym->session);
400 op->sym->session = NULL;
403 enqueued_op = rte_ring_enqueue_burst(qp->processed_ops,
404 (void **)&op, processed_op, NULL);
405 qp->qp_stats.enqueued_count += enqueued_op;
406 *accumulated_enqueued_ops += enqueued_op;
412 snow3g_pmd_enqueue_burst(void *queue_pair, struct rte_crypto_op **ops,
415 struct rte_crypto_op *c_ops[SNOW3G_MAX_BURST];
416 struct rte_crypto_op *curr_c_op;
418 struct snow3g_session *prev_sess = NULL, *curr_sess = NULL;
419 struct snow3g_qp *qp = queue_pair;
421 uint8_t burst_size = 0;
422 uint16_t enqueued_ops = 0;
423 uint8_t processed_ops;
425 for (i = 0; i < nb_ops; i++) {
428 /* Set status as enqueued (not processed yet) by default. */
429 curr_c_op->status = RTE_CRYPTO_OP_STATUS_NOT_PROCESSED;
431 curr_sess = snow3g_get_session(qp, curr_c_op);
432 if (unlikely(curr_sess == NULL ||
433 curr_sess->op == SNOW3G_OP_NOT_SUPPORTED)) {
435 RTE_CRYPTO_OP_STATUS_INVALID_SESSION;
439 /* If length/offset is at bit-level, process this buffer alone. */
440 if (((curr_c_op->sym->cipher.data.length % BYTE_LEN) != 0)
441 || ((curr_c_op->sym->cipher.data.offset
443 /* Process the ops of the previous session. */
444 if (prev_sess != NULL) {
445 processed_ops = process_ops(c_ops, prev_sess,
446 qp, burst_size, &enqueued_ops);
447 if (processed_ops < burst_size) {
456 processed_ops = process_op_bit(curr_c_op, curr_sess,
458 if (processed_ops != 1)
464 /* Batch ops that share the same session. */
465 if (prev_sess == NULL) {
466 prev_sess = curr_sess;
467 c_ops[burst_size++] = curr_c_op;
468 } else if (curr_sess == prev_sess) {
469 c_ops[burst_size++] = curr_c_op;
471 * When there are enough ops to process in a batch,
472 * process them, and start a new batch.
474 if (burst_size == SNOW3G_MAX_BURST) {
475 processed_ops = process_ops(c_ops, prev_sess,
476 qp, burst_size, &enqueued_ops);
477 if (processed_ops < burst_size) {
487 * Different session, process the ops
488 * of the previous session.
490 processed_ops = process_ops(c_ops, prev_sess,
491 qp, burst_size, &enqueued_ops);
492 if (processed_ops < burst_size) {
498 prev_sess = curr_sess;
500 c_ops[burst_size++] = curr_c_op;
504 if (burst_size != 0) {
505 /* Process the crypto ops of the last session. */
506 processed_ops = process_ops(c_ops, prev_sess,
507 qp, burst_size, &enqueued_ops);
510 qp->qp_stats.enqueue_err_count += nb_ops - enqueued_ops;
515 snow3g_pmd_dequeue_burst(void *queue_pair,
516 struct rte_crypto_op **c_ops, uint16_t nb_ops)
518 struct snow3g_qp *qp = queue_pair;
520 unsigned nb_dequeued;
522 nb_dequeued = rte_ring_dequeue_burst(qp->processed_ops,
523 (void **)c_ops, nb_ops, NULL);
524 qp->qp_stats.dequeued_count += nb_dequeued;
529 static int cryptodev_snow3g_remove(struct rte_vdev_device *vdev);
532 cryptodev_snow3g_create(const char *name,
533 struct rte_vdev_device *vdev,
534 struct rte_cryptodev_pmd_init_params *init_params)
536 struct rte_cryptodev *dev;
537 struct snow3g_private *internals;
538 uint64_t cpu_flags = RTE_CRYPTODEV_FF_CPU_SSE;
540 dev = rte_cryptodev_pmd_create(name, &vdev->device, init_params);
542 SNOW3G_LOG(ERR, "failed to create cryptodev vdev");
546 dev->driver_id = cryptodev_driver_id;
547 dev->dev_ops = rte_snow3g_pmd_ops;
549 /* Register RX/TX burst functions for data path. */
550 dev->dequeue_burst = snow3g_pmd_dequeue_burst;
551 dev->enqueue_burst = snow3g_pmd_enqueue_burst;
553 dev->feature_flags = RTE_CRYPTODEV_FF_SYMMETRIC_CRYPTO |
554 RTE_CRYPTODEV_FF_SYM_OPERATION_CHAINING |
557 internals = dev->data->dev_private;
559 internals->max_nb_queue_pairs = init_params->max_nb_queue_pairs;
563 SNOW3G_LOG(ERR, "driver %s: cryptodev_snow3g_create failed",
566 cryptodev_snow3g_remove(vdev);
571 cryptodev_snow3g_probe(struct rte_vdev_device *vdev)
573 struct rte_cryptodev_pmd_init_params init_params = {
575 sizeof(struct snow3g_private),
577 RTE_CRYPTODEV_PMD_DEFAULT_MAX_NB_QUEUE_PAIRS
580 const char *input_args;
582 name = rte_vdev_device_name(vdev);
585 input_args = rte_vdev_device_args(vdev);
587 rte_cryptodev_pmd_parse_input_args(&init_params, input_args);
589 return cryptodev_snow3g_create(name, vdev, &init_params);
593 cryptodev_snow3g_remove(struct rte_vdev_device *vdev)
595 struct rte_cryptodev *cryptodev;
598 name = rte_vdev_device_name(vdev);
602 cryptodev = rte_cryptodev_pmd_get_named_dev(name);
603 if (cryptodev == NULL)
606 return rte_cryptodev_pmd_destroy(cryptodev);
609 static struct rte_vdev_driver cryptodev_snow3g_pmd_drv = {
610 .probe = cryptodev_snow3g_probe,
611 .remove = cryptodev_snow3g_remove
614 static struct cryptodev_driver snow3g_crypto_drv;
616 RTE_PMD_REGISTER_VDEV(CRYPTODEV_NAME_SNOW3G_PMD, cryptodev_snow3g_pmd_drv);
617 RTE_PMD_REGISTER_ALIAS(CRYPTODEV_NAME_SNOW3G_PMD, cryptodev_snow3g_pmd);
618 RTE_PMD_REGISTER_PARAM_STRING(CRYPTODEV_NAME_SNOW3G_PMD,
619 "max_nb_queue_pairs=<int> "
621 RTE_PMD_REGISTER_CRYPTO_DRIVER(snow3g_crypto_drv,
622 cryptodev_snow3g_pmd_drv.driver, cryptodev_driver_id);
624 RTE_INIT(snow3g_init_log)
626 snow3g_logtype_driver = rte_log_register("pmd.crypto.snow3g");