1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2018 Intel Corporation.
6 #ifndef _RTE_EVENT_CRYPTO_ADAPTER_
7 #define _RTE_EVENT_CRYPTO_ADAPTER_
12 * RTE Event crypto adapter
14 * Eventdev library provides couple of adapters to bridge between various
15 * components for providing new event source. The event crypto adapter is
16 * one of those adapters which is intended to bridge between event devices
19 * The crypto adapter adds support to enqueue/dequeue crypto operations to/
20 * from event device. The packet flow between crypto device and the event
21 * device can be accomplished using both SW and HW based transfer mechanisms.
22 * The adapter uses an EAL service core function for SW based packet transfer
23 * and uses the eventdev PMD functions to configure HW based packet transfer
24 * between the crypto device and the event device.
26 * The application can choose to submit a crypto operation directly to
27 * crypto device or send it to the crypto adapter via eventdev based on
28 * RTE_EVENT_CRYPTO_ADAPTER_CAP_INTERNAL_PORT_OP_FWD capability.
29 * The first mode is known as the event new(RTE_EVENT_CRYPTO_ADAPTER_OP_NEW)
30 * mode and the second as the event forward(RTE_EVENT_CRYPTO_ADAPTER_OP_FORWARD)
31 * mode. The choice of mode can be specified while creating the adapter.
32 * In the former mode, it is an application responsibility to enable ingress
33 * packet ordering. In the latter mode, it is the adapter responsibility to
34 * enable the ingress packet ordering.
37 * Working model of RTE_EVENT_CRYPTO_ADAPTER_OP_NEW mode:
39 * +--------------+ +--------------+
40 * | | | Crypto stage |
41 * | Application |---[2]-->| + enqueue to |
43 * +--------------+ +--------------+
57 * +--------------+ +--------------+
59 * |Crypto adapter|<--[4]---| Cryptodev |
61 * +--------------+ +--------------+
64 * [1] Application dequeues events from the previous stage.
65 * [2] Application prepares the crypto operations.
66 * [3] Crypto operations are submitted to cryptodev by application.
67 * [4] Crypto adapter dequeues crypto completions from cryptodev.
68 * [5] Crypto adapter enqueues events to the eventdev.
69 * [6] Application dequeues from eventdev and prepare for further
72 * In the RTE_EVENT_CRYPTO_ADAPTER_OP_NEW mode, application submits crypto
73 * operations directly to crypto device. The adapter then dequeues crypto
74 * completions from crypto device and enqueue events to the event device.
75 * This mode does not ensure ingress ordering, if the application directly
76 * enqueues to cryptodev without going through crypto/atomic stage i.e.
77 * removing item [1] and [2].
78 * Events dequeued from the adapter will be treated as new events.
79 * In this mode, application needs to specify event information (response
80 * information) which is needed to enqueue an event after the crypto operation
84 * Working model of RTE_EVENT_CRYPTO_ADAPTER_OP_FORWARD mode:
86 * +--------------+ +--------------+
87 * --[1]-->| |---[2]-->| Application |
88 * | Event device | | in |
89 * <--[8]--| |<--[3]---| Ordered stage|
90 * +--------------+ +--------------+
95 * +----------------+ +--------------+
97 * | Crypto adapter | | Cryptodev |
99 * +----------------+ +--------------+
102 * [1] Events from the previous stage.
103 * [2] Application in ordered stage dequeues events from eventdev.
104 * [3] Application enqueues crypto operations as events to eventdev.
105 * [4] Crypto adapter dequeues event from eventdev.
106 * [5] Crypto adapter submits crypto operations to cryptodev
108 * [6] Crypto adapter dequeues crypto completions from cryptodev
109 * [7] Crypto adapter enqueues events to the eventdev
110 * [8] Events to the next stage
112 * In the RTE_EVENT_CRYPTO_ADAPTER_OP_FORWARD mode, if HW supports
113 * RTE_EVENT_CRYPTO_ADAPTER_CAP_INTERNAL_PORT_OP_FWD capability the application
114 * can directly submit the crypto operations to the cryptodev.
115 * If not, application retrieves crypto adapter's event port using
116 * rte_event_crypto_adapter_event_port_get() API. Then, links its event
117 * queue to this port and starts enqueuing crypto operations as events
118 * to the eventdev. The adapter then dequeues the events and submits the
119 * crypto operations to the cryptodev. After the crypto completions, the
120 * adapter enqueues events to the event device.
121 * Application can use this mode, when ingress packet ordering is needed.
122 * Events dequeued from the adapter will be treated as forwarded events.
123 * In this mode, the application needs to specify the cryptodev ID
124 * and queue pair ID (request information) needed to enqueue a crypto
125 * operation in addition to the event information (response information)
126 * needed to enqueue an event after the crypto operation has completed.
129 * The event crypto adapter provides common APIs to configure the packet flow
130 * from the crypto device to event devices for both SW and HW based transfers.
131 * The crypto event adapter's functions are:
132 * - rte_event_crypto_adapter_create_ext()
133 * - rte_event_crypto_adapter_create()
134 * - rte_event_crypto_adapter_free()
135 * - rte_event_crypto_adapter_queue_pair_add()
136 * - rte_event_crypto_adapter_queue_pair_del()
137 * - rte_event_crypto_adapter_start()
138 * - rte_event_crypto_adapter_stop()
139 * - rte_event_crypto_adapter_stats_get()
140 * - rte_event_crypto_adapter_stats_reset()
142 * The application creates an instance using rte_event_crypto_adapter_create()
143 * or rte_event_crypto_adapter_create_ext().
145 * Cryptodev queue pair addition/deletion is done using the
146 * rte_event_crypto_adapter_queue_pair_xxx() APIs. If HW supports
147 * RTE_EVENT_CRYPTO_ADAPTER_CAP_INTERNAL_PORT_QP_EV_BIND capability, event
148 * information must be passed to the add API.
150 * The SW adapter or HW PMD uses rte_crypto_op::sess_type to decide whether
151 * request/response(private) data is located in the crypto/security session
152 * or at an offset in the rte_crypto_op.
154 * For session-based operations, the set and get API provides a mechanism for
155 * an application to store and retrieve the data information stored
156 * along with the crypto session.
157 * The RTE_EVENT_CRYPTO_ADAPTER_CAP_SESSION_PRIVATE_DATA capability indicates
158 * whether HW or SW supports this feature.
160 * For session-less mode, the adapter gets the private data information placed
161 * along with the ``struct rte_crypto_op``.
162 * The rte_crypto_op::private_data_offset provides an offset to locate the
163 * request/response information in the rte_crypto_op. This offset is counted
164 * from the start of the rte_crypto_op including initialization vector (IV).
173 #include "rte_eventdev.h"
174 #include "eventdev_pmd.h"
177 * Crypto event adapter mode
179 enum rte_event_crypto_adapter_mode {
180 RTE_EVENT_CRYPTO_ADAPTER_OP_NEW,
181 /**< Start the crypto adapter in event new mode.
182 * @see RTE_EVENT_OP_NEW.
183 * Application submits crypto operations to the cryptodev.
184 * Adapter only dequeues the crypto completions from cryptodev
185 * and enqueue events to the eventdev.
187 RTE_EVENT_CRYPTO_ADAPTER_OP_FORWARD,
188 /**< Start the crypto adapter in event forward mode.
189 * @see RTE_EVENT_OP_FORWARD.
190 * Application submits crypto requests as events to the crypto
191 * adapter or crypto device based on
192 * RTE_EVENT_CRYPTO_ADAPTER_CAP_INTERNAL_PORT_OP_FWD capability.
193 * Crypto completions are enqueued back to the eventdev by
199 * Crypto event request structure will be filled by application to
200 * provide event request information to the adapter.
202 struct rte_event_crypto_request {
204 /**< Overlaps with first 8 bytes of struct rte_event
205 * that encode the response event information. Application
206 * is expected to fill in struct rte_event response_info.
209 /**< cryptodev ID to be used */
210 uint16_t queue_pair_id;
211 /**< cryptodev queue pair ID to be used */
213 /**< Reserved bits */
217 * Crypto event metadata structure will be filled by application
218 * to provide crypto request and event response information.
220 * If crypto events are enqueued using a HW mechanism, the cryptodev
221 * PMD will use the event response information to set up the event
222 * that is enqueued back to eventdev after completion of the crypto
223 * operation. If the transfer is done by SW, event response information
224 * will be used by the adapter.
226 union rte_event_crypto_metadata {
227 struct rte_event_crypto_request request_info;
228 /**< Request information to be filled in by application
229 * for RTE_EVENT_CRYPTO_ADAPTER_OP_FORWARD mode.
231 struct rte_event response_info;
232 /**< Response information to be filled in by application
233 * for RTE_EVENT_CRYPTO_ADAPTER_OP_NEW and
234 * RTE_EVENT_CRYPTO_ADAPTER_OP_FORWARD mode.
239 * Adapter configuration structure that the adapter configuration callback
240 * function is expected to fill out
241 * @see rte_event_crypto_adapter_conf_cb
243 struct rte_event_crypto_adapter_conf {
244 uint8_t event_port_id;
245 /**< Event port identifier, the adapter enqueues events to this
246 * port and dequeues crypto request events in
247 * RTE_EVENT_CRYPTO_ADAPTER_OP_FORWARD mode.
250 /**< The adapter can return early if it has processed at least
251 * max_nb crypto ops. This isn't treated as a requirement; batching
252 * may cause the adapter to process more than max_nb crypto ops.
257 * Function type used for adapter configuration callback. The callback is
258 * used to fill in members of the struct rte_event_crypto_adapter_conf, this
259 * callback is invoked when creating a SW service for packet transfer from
260 * cryptodev queue pair to the event device. The SW service is created within
261 * the rte_event_crypto_adapter_queue_pair_add() function if SW based packet
262 * transfers from cryptodev queue pair to the event device are required.
265 * Adapter identifier.
268 * Event device identifier.
271 * Structure that needs to be populated by this callback.
274 * Argument to the callback. This is the same as the conf_arg passed to the
275 * rte_event_crypto_adapter_create_ext().
277 typedef int (*rte_event_crypto_adapter_conf_cb) (uint8_t id, uint8_t dev_id,
278 struct rte_event_crypto_adapter_conf *conf,
282 * A structure used to retrieve statistics for an event crypto adapter
286 struct rte_event_crypto_adapter_stats {
287 uint64_t event_poll_count;
288 /**< Event port poll count */
289 uint64_t event_deq_count;
290 /**< Event dequeue count */
291 uint64_t crypto_enq_count;
292 /**< Cryptodev enqueue count */
293 uint64_t crypto_enq_fail;
294 /**< Cryptodev enqueue failed count */
295 uint64_t crypto_deq_count;
296 /**< Cryptodev dequeue count */
297 uint64_t event_enq_count;
298 /**< Event enqueue count */
299 uint64_t event_enq_retry_count;
300 /**< Event enqueue retry count */
301 uint64_t event_enq_fail_count;
302 /**< Event enqueue fail count */
306 * Create a new event crypto adapter with the specified identifier.
309 * Adapter identifier.
312 * Event device identifier.
315 * Callback function that fills in members of a
316 * struct rte_event_crypto_adapter_conf struct passed into
320 * Flag to indicate the mode of the adapter.
321 * @see rte_event_crypto_adapter_mode
324 * Argument that is passed to the conf_cb function.
328 * - <0: Error code on failure
331 rte_event_crypto_adapter_create_ext(uint8_t id, uint8_t dev_id,
332 rte_event_crypto_adapter_conf_cb conf_cb,
333 enum rte_event_crypto_adapter_mode mode,
337 * Create a new event crypto adapter with the specified identifier.
338 * This function uses an internal configuration function that creates an event
339 * port. This default function reconfigures the event device with an
340 * additional event port and set up the event port using the port_config
341 * parameter passed into this function. In case the application needs more
342 * control in configuration of the service, it should use the
343 * rte_event_crypto_adapter_create_ext() version.
346 * Adapter identifier.
349 * Event device identifier.
352 * Argument of type *rte_event_port_conf* that is passed to the conf_cb
356 * Flag to indicate the mode of the adapter.
357 * @see rte_event_crypto_adapter_mode
361 * - <0: Error code on failure
364 rte_event_crypto_adapter_create(uint8_t id, uint8_t dev_id,
365 struct rte_event_port_conf *port_config,
366 enum rte_event_crypto_adapter_mode mode);
369 * Free an event crypto adapter
372 * Adapter identifier.
376 * - <0: Error code on failure, If the adapter still has queue pairs
377 * added to it, the function returns -EBUSY.
380 rte_event_crypto_adapter_free(uint8_t id);
383 * Add a queue pair to an event crypto adapter.
386 * Adapter identifier.
389 * Cryptodev identifier.
391 * @param queue_pair_id
392 * Cryptodev queue pair identifier. If queue_pair_id is set -1,
393 * adapter adds all the pre configured queue pairs to the instance.
396 * if HW supports cryptodev queue pair to event queue binding, application is
397 * expected to fill in event information, else it will be NULL.
398 * @see RTE_EVENT_CRYPTO_ADAPTER_CAP_INTERNAL_PORT_QP_EV_BIND
401 * - 0: Success, queue pair added correctly.
402 * - <0: Error code on failure.
405 rte_event_crypto_adapter_queue_pair_add(uint8_t id,
407 int32_t queue_pair_id,
408 const struct rte_event *event);
411 * Delete a queue pair from an event crypto adapter.
414 * Adapter identifier.
417 * Cryptodev identifier.
419 * @param queue_pair_id
420 * Cryptodev queue pair identifier.
423 * - 0: Success, queue pair deleted successfully.
424 * - <0: Error code on failure.
427 rte_event_crypto_adapter_queue_pair_del(uint8_t id, uint8_t cdev_id,
428 int32_t queue_pair_id);
431 * Start event crypto adapter
434 * Adapter identifier.
438 * - 0: Success, adapter started successfully.
439 * - <0: Error code on failure.
442 * The eventdev to which the event_crypto_adapter is connected needs to
443 * be started before calling rte_event_crypto_adapter_start().
446 rte_event_crypto_adapter_start(uint8_t id);
449 * Stop event crypto adapter
452 * Adapter identifier.
455 * - 0: Success, adapter stopped successfully.
456 * - <0: Error code on failure.
459 rte_event_crypto_adapter_stop(uint8_t id);
462 * Retrieve statistics for an adapter
465 * Adapter identifier.
468 * A pointer to structure used to retrieve statistics for an adapter.
471 * - 0: Success, retrieved successfully.
472 * - <0: Error code on failure.
475 rte_event_crypto_adapter_stats_get(uint8_t id,
476 struct rte_event_crypto_adapter_stats *stats);
479 * Reset statistics for an adapter.
482 * Adapter identifier.
485 * - 0: Success, statistics reset successfully.
486 * - <0: Error code on failure.
489 rte_event_crypto_adapter_stats_reset(uint8_t id);
492 * Retrieve the service ID of an adapter. If the adapter doesn't use
493 * a rte_service function, this function returns -ESRCH.
496 * Adapter identifier.
498 * @param [out] service_id
499 * A pointer to a uint32_t, to be filled in with the service id.
503 * - <0: Error code on failure, if the adapter doesn't use a rte_service
504 * function, this function returns -ESRCH.
507 rte_event_crypto_adapter_service_id_get(uint8_t id, uint32_t *service_id);
510 * Retrieve the event port of an adapter.
513 * Adapter identifier.
515 * @param [out] event_port_id
516 * Application links its event queue to this adapter port which is used
517 * in RTE_EVENT_CRYPTO_ADAPTER_OP_FORWARD mode.
521 * - <0: Error code on failure.
524 rte_event_crypto_adapter_event_port_get(uint8_t id, uint8_t *event_port_id);
527 * Enqueue a burst of crypto operations as event objects supplied in *rte_event*
528 * structure on an event crypto adapter designated by its event *dev_id* through
529 * the event port specified by *port_id*. This function is supported if the
530 * eventdev PMD has the #RTE_EVENT_CRYPTO_ADAPTER_CAP_INTERNAL_PORT_OP_FWD
531 * capability flag set.
533 * The *nb_events* parameter is the number of event objects to enqueue which are
534 * supplied in the *ev* array of *rte_event* structure.
536 * The rte_event_crypto_adapter_enqueue() function returns the number of
537 * event objects it actually enqueued. A return value equal to *nb_events*
538 * means that all event objects have been enqueued.
541 * The identifier of the device.
543 * The identifier of the event port.
545 * Points to an array of *nb_events* objects of type *rte_event* structure
546 * which contain the event object enqueue operations to be processed.
548 * The number of event objects to enqueue, typically number of
549 * rte_event_port_attr_get(...RTE_EVENT_PORT_ATTR_ENQ_DEPTH...)
550 * available for this port.
553 * The number of event objects actually enqueued on the event device. The
554 * return value can be less than the value of the *nb_events* parameter when
555 * the event devices queue is full or if invalid parameters are specified in a
556 * *rte_event*. If the return value is less than *nb_events*, the remaining
557 * events at the end of ev[] are not consumed and the caller has to take care
558 * of them, and rte_errno is set accordingly. Possible errno values include:
559 * - EINVAL The port ID is invalid, device ID is invalid, an event's queue
560 * ID is invalid, or an event's sched type doesn't match the
561 * capabilities of the destination queue.
562 * - ENOSPC The event port was backpressured and unable to enqueue
563 * one or more events. This error code is only applicable to
566 static inline uint16_t
567 rte_event_crypto_adapter_enqueue(uint8_t dev_id,
569 struct rte_event ev[],
572 const struct rte_eventdev *dev = &rte_eventdevs[dev_id];
574 #ifdef RTE_LIBRTE_EVENTDEV_DEBUG
575 RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
577 if (port_id >= dev->data->nb_ports) {
582 rte_eventdev_trace_crypto_adapter_enqueue(dev_id, port_id, ev,
585 return dev->ca_enqueue(dev->data->ports[port_id], ev, nb_events);
591 #endif /* _RTE_EVENT_CRYPTO_ADAPTER_ */