Add entries in the programmer's guide, API index, maintainer's file
and release notes for the event crypto adapter.
Signed-off-by: Abhinandan Gujjar <abhinandan.guj...@intel.com>
---
MAINTAINERS | 1 +
doc/api/doxy-api-index.md | 1 +
doc/guides/prog_guide/event_crypto_adapter.rst | 244 +++++
.../img/event_crypto_adapter_op_forward.svg | 1073 ++++++++++++++++++++
.../prog_guide/img/event_crypto_adapter_op_new.svg | 968 ++++++++++++++++++
doc/guides/prog_guide/index.rst | 1 +
doc/guides/rel_notes/release_18_05.rst | 6 +
7 files changed, 2294 insertions(+)
create mode 100644 doc/guides/prog_guide/event_crypto_adapter.rst
create mode 100644
doc/guides/prog_guide/img/event_crypto_adapter_op_forward.svg
create mode 100644 doc/guides/prog_guide/img/event_crypto_adapter_op_new.svg
diff --git a/MAINTAINERS b/MAINTAINERS
index 60ebef7..ea5dc40 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -367,6 +367,7 @@ M: Abhinandan Gujjar <abhinandan.guj...@intel.com>
T: git://dpdk.org/next/dpdk-next-eventdev
F: lib/librte_eventdev/*crypto_adapter*
F: test/test/test_event_crypto_adapter.c
+F: doc/guides/prog_guide/event_crypto_adapter.rst
Raw device API - EXPERIMENTAL
M: Shreyansh Jain <shreyansh.j...@nxp.com>
diff --git a/doc/api/doxy-api-index.md b/doc/api/doxy-api-index.md
index 26ce7b4..0162bb7 100644
--- a/doc/api/doxy-api-index.md
+++ b/doc/api/doxy-api-index.md
@@ -21,6 +21,7 @@ The public API headers are grouped by topics:
[eventdev] (@ref rte_eventdev.h),
[event_eth_rx_adapter] (@ref rte_event_eth_rx_adapter.h),
[event_timer_adapter] (@ref rte_event_timer_adapter.h),
+ [event_crypto_adapter] (@ref rte_event_crypto_adapter.h),
[rawdev] (@ref rte_rawdev.h),
[metrics] (@ref rte_metrics.h),
[bitrate] (@ref rte_bitrate.h),
diff --git a/doc/guides/prog_guide/event_crypto_adapter.rst
b/doc/guides/prog_guide/event_crypto_adapter.rst
new file mode 100644
index 0000000..899f393
--- /dev/null
+++ b/doc/guides/prog_guide/event_crypto_adapter.rst
@@ -0,0 +1,244 @@
+.. SPDX-License-Identifier: BSD-3-Clause
+ Copyright(c) 2018 Intel Corporation.
+
+Event Crypto Adapter Library
+============================
+
+The DPDK Event device library :doc:`<eventdev>`provides event driven
+programming model with features to schedule events. The cryptodev
+library :doc:`<cryptodev_lib>` provides interface to crypto poll mode
+drivers which supports different crypto operations. The Event Crypto
+Adapter is one of the event adapter which is intended to bridge between
+event devices and crypto device.
+
+The packet flow from crypto device to the event device can be accomplished
+using both SW and HW based transfer mechanisms.
+The Adapter queries an eventdev PMD to determine which mechanism to be used.
+The adapter uses an EAL service core function for SW based packet transfer
+and uses the eventdev PMD functions to configure HW based packet transfer
+between the crypto device and the event device.
+
+Crypto adapter uses a new event type called ``RTE_EVENT_TYPE_CRYPTODEV``
+to indicate the event source.
+
+API Overview
+------------
+
+This section has a brief introduction to the event crypto adapter APIs.
+The application is expected to create an adapter which is associated with
+a single eventdev, then add cryptodev and queue pair to the adapter instance.
+
+Adapter can be started in ``RTE_EVENT_CRYPTO_ADAPTER_OP_NEW`` or
+``RTE_EVENT_CRYPTO_ADAPTER_OP_FORWARD`` mode.
+In the first mode, application submits crypto operations directly to the
crypto device.
+Adapter only dequeues crypto completions and enqueues them as events to the
event device.
+
+.. figure:: img/event_crypto_adapter_op_new.*
+
+In the second mode, application enqueues crypto operations as events to the
event device.
+The crypto adapter dequeues events and submits crypto operations to the crypto
device.
+After the crypto completions, adapter enqueues them as events to the event
device.
+
+.. figure:: img/event_crypto_adapter_op_forward.*
+
+Create an adapter instance
+--------------------------
+
+An adapter instance is created using ``rte_event_crypto_adapter_create()``.
This
+function is called with event device to be associated with the adapter and port
+configuration for the adapter to setup an event port(if the adapter needs to
use
+a service function).
+
+.. code-block:: c
+
+ int err;
+ uint8_t dev_id, id;
+ struct rte_event_dev_info dev_info;
+ struct rte_event_port_conf conf;
+ enum rte_event_crypto_adapter_mode mode;
+
+ err = rte_event_dev_info_get(id, &dev_info);
+
+ conf.new_event_threshold = dev_info.max_num_events;
+ conf.dequeue_depth = dev_info.max_event_port_dequeue_depth;
+ conf.enqueue_depth = dev_info.max_event_port_enqueue_depth;
+ mode = RTE_EVENT_CRYPTO_ADAPTER_OP_FORWARD;
+ err = rte_event_crypto_adapter_create(id, dev_id, &conf, mode);
+
+If the application desires to have finer control of eventdev port allocation
+and setup, it can use the ``rte_event_crypto_adapter_create_ext()`` function.
+The ``rte_event_crypto_adapter_create_ext()`` function is passed as a callback
+function. The callback function is invoked if the adapter needs to use a
+service function and needs to create an event port for it. The callback is
+expected to fill the ``struct rte_event_crypto_adapter_conf`` structure
+passed to it.
+
+For OP_FORWARD mode, the event port created by adapter can be retrieved using
+``rte_event_crypto_adapter_event_port_get()`` API.
+Application can use this event port to link with event queue on which it
+enqueues events towards the crypto adapter.
+
+.. code-block:: c
+
+ uint8_t id, evdev, crypto_ev_port_id, app_qid;
+ struct rte_event ev;
+ int ret;
+
+ ret = rte_event_crypto_adapter_event_port_get(id, &crypto_ev_port_id);
+ ret = rte_event_queue_setup(evdev, app_qid, NULL);
+ ret = rte_event_port_link(evdev, crypto_ev_port_id, &app_qid, NULL, 1);
+
+ /* Fill in event info and update event_ptr with rte_crypto_op */
+ memset(&ev, 0, sizeof(ev));
+ ev.queue_id = app_qid;
+ .
+ .
+ ev.event_ptr = op;
+ ret = rte_event_enqueue_burst(evdev, app_ev_port_id, ev, nb_events);
+
+
+Adding queue pair to the adapter instance
+-----------------------------------------
+
+Cryptodev device id and queue pair are created using cryptodev APIs.
+For more information see :doc:`here <cryptodev_lib>`.
+
+.. code-block:: c
+
+ struct rte_cryptodev_config conf;
+ struct rte_cryptodev_qp_conf qp_conf;
+ uint8_t cdev_id = 0;
+ uint16_t qp_id = 0;
+
+ rte_cryptodev_configure(cdev_id, &conf);
+ rte_cryptodev_queue_pair_setup(cdev_id, qp_id, &qp_conf);
+
+These cryptodev id and queue pair are added to the instance using the
+``rte_event_crypto_adapter_queue_pair_add()`` function.
+The same is removed using ``rte_event_crypto_adapter_queue_pair_del()``.
+
+.. code-block:: c
+
+ struct rte_event_crypto_queue_pair_conf conf;
+
+ rte_event_crypto_adapter_queue_pair_add(id, cdev_id, qp_id, &conf);
+
+
+Querying adapter capabilities
+-----------------------------
+
+The ``rte_event_crypto_adapter_caps_get()`` function allows
+the application to query the adapter capabilities for an eventdev and cryptodev
+combination. This API provides whether cryptodev and eventdev are connected
using
+internal HW port or not.
+
+.. code-block:: c
+
+ rte_event_crypto_adapter_caps_get(dev_id, cdev_id, &cap);
+
+
+Configure the service function
+------------------------------
+
+If the adapter uses a service function, the application is required to assign
+a service core to the service function as show below.
+
+.. code-block:: c
+
+ uint32_t service_id;
+
+ if (rte_event_crypto_adapter_service_id_get(id, &service_id) == 0)
+ rte_service_map_lcore_set(service_id, CORE_ID);
+
+
+Set event request/response information
+--------------------------------------
+
+In the OP_FORWARD mode, the application needs to specify the cryptodev ID
+and queue pair ID (request information) in addition to the event
+information (response information) needed to enqueue an event after
+the crypto operation has completed. The request and response information
+are specified in the ``struct rte_crypto_op`` private data or session's
+private data.
+
+In the OP_NEW mode, the application is required to provide only the
+response information.
+
+The SW adapter or HW PMD uses ``rte_crypto_op::sess_type`` to
+decide whether request/response data is located in the crypto session/
+crypto security session or at an offset in the ``struct rte_crypto_op``.
+The ``rte_crypto_op::private_data_offset`` is used to locate the request/
+response in the ``rte_crypto_op``.
+
+For crypto session, ``rte_cryptodev_sym_session_set_private_data()`` API
+will be used to set request/response data. The same data will be obtained
+by ``rte_cryptodev_sym_session_get_private_data()`` API. The
+RTE_EVENT_CRYPTO_ADAPTER_CAP_SESSION_PRIVATE_DATA capability indicates
+whether HW or SW supports this feature.
+
+For security session, ``rte_security_session_set_private_data()`` API
+will be used to set request/response data. The same data will be obtained
+by ``rte_security_session_get_private_data()`` API.
+
+For session-less it is mandatory to place the request/response data with
+the ``rte_crypto_op``.
+
+.. code-block:: c
+
+ union rte_event_crypto_metadata m_data;
+ struct rte_event ev;
+ struct rte_crypto_op *op;
+
+ /* Allocate & fill op structure */
+ op = rte_crypto_op_alloc();
+
+ memset(&m_data, 0, sizeof(m_data));
+ memset(&ev, 0, sizeof(ev));
+ /* Fill event information and update event_ptr to rte_crypto_op */
+ ev.event_ptr = op;
+
+ if (op->sess_type == RTE_CRYPTO_OP_WITH_SESSION) {
+ /* Copy response information */
+ rte_memcpy(&m_data.response_info, &ev, sizeof(ev));
+ /* Copy request information */
+ m_data.request_info.cdev_id = cdev_id;
+ m_data.request_info.queue_pair_id = qp_id;
+ /* Call set API to store private data information */
+ rte_cryptodev_sym_session_set_private_data(
+ op->sym->session,
+ &m_data,
+ sizeof(m_data));
+ } if (op->sess_type == RTE_CRYPTO_OP_SESSIONLESS) {
+ uint32_t len = IV_OFFSET + MAXIMUM_IV_LENGTH +
+ (sizeof(struct rte_crypto_sym_xform) * 2);
+ op->private_data_offset = len;
+ /* Copy response information */
+ rte_memcpy(&m_data.response_info, &ev, sizeof(ev));
+ /* Copy request information */
+ m_data.request_info.cdev_id = cdev_id;
+ m_data.request_info.queue_pair_id = qp_id;
+ /* Store private data information along with rte_crypto_op */
+ rte_memcpy(op + len, &m_data, sizeof(m_data));
+ }
+
+Start the adapter instance
+--------------------------
+
+The application calls ``rte_event_crypto_adapter_start()`` to start the
adapter.
+This function calls the start callbacks of the eventdev PMDs for hardware based
+eventdev-cryptodev connections and ``rte_service_run_state_set()`` to enable
the
+service function if one exists.
+
+.. code-block:: c
+
+ rte_event_crypto_adapter_start(id, mode);
+
+
+Get adapter statistics
+----------------------
+
+The ``rte_event_crypto_adapter_stats_get()`` function reports counters defined
+in struct ``rte_event_crypto_adapter_stats``. The received packet and
+enqueued event counts are a sum of the counts from the eventdev PMD callbacks
+if the callback is supported, and the counts maintained by the service
function,
+if one exists.
diff --git a/doc/guides/prog_guide/img/event_crypto_adapter_op_forward.svg
b/doc/guides/prog_guide/img/event_crypto_adapter_op_forward.svg
new file mode 100644
index 0000000..38be6a2
--- /dev/null
+++ b/doc/guides/prog_guide/img/event_crypto_adapter_op_forward.svg
@@ -0,0 +1,1073 @@
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+ sodipodi:role="line"
+ id="tspan3201-9">Cryptodev</tspan></text>
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+ id="text29163-9-6-3-6"
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+
style="font-size:40px;font-style:normal;font-weight:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:Sans"
+ xml:space="preserve"><tspan
+
style="font-size:18.83072472px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:start;line-height:125%;writing-mode:lr-tb;text-anchor:start;font-family:Sans;-inkscape-font-specification:Sans"
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+ sodipodi:role="line"
+ id="tspan3201-6">1. Events from the previous stage.</tspan><tspan
+
style="font-size:18.83072472px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:start;line-height:125%;writing-mode:lr-tb;text-anchor:start;font-family:Sans;-inkscape-font-specification:Sans"
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+ sodipodi:role="line"
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+
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+ sodipodi:role="line"
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+
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+ x="375.65271"
+ sodipodi:role="line"
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+
style="font-size:18.83072472px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:start;line-height:125%;writing-mode:lr-tb;text-anchor:start;font-family:Sans;-inkscape-font-specification:Sans"
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+ id="tspan3266">3. Application enqueues crypto</tspan><tspan
+
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+ sodipodi:role="line"
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+
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+ sodipodi:role="line"
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+ x="375.65271"
+ sodipodi:role="line"
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+
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+ x="375.65271"
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diff --git a/doc/guides/prog_guide/img/event_crypto_adapter_op_new.svg
b/doc/guides/prog_guide/img/event_crypto_adapter_op_new.svg
new file mode 100644
index 0000000..c87321f
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+ y="150.70311"
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+ y="70"
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+ sodipodi:role="line">Cryptodev</tspan></text>
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style="font-size:24.21093369px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;writing-mode:lr-tb;text-anchor:middle;font-family:Sans;-inkscape-font-specification:Sans"
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+ id="tspan3488">adapter</tspan></text>
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+ xml:space="preserve"><tspan
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style="font-size:21.52082825px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:start;line-height:125%;writing-mode:lr-tb;text-anchor:start;font-family:Sans;-inkscape-font-specification:Sans"
+ y="-169.80624"
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+ sodipodi:role="line"
+ id="tspan3488-5">1. Events from the previous</tspan><tspan
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style="font-size:21.52082825px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:start;line-height:125%;writing-mode:lr-tb;text-anchor:start;font-family:Sans;-inkscape-font-specification:Sans"
+ y="-142.90521"
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+ sodipodi:role="line"
+ id="tspan3543"> stage</tspan><tspan
+
style="font-size:21.52082825px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:start;line-height:125%;writing-mode:lr-tb;text-anchor:start;font-family:Sans;-inkscape-font-specification:Sans"
+ y="-116.00417"
+ x="310.42673"
+ sodipodi:role="line"
+ id="tspan3519" /><tspan
+
style="font-size:21.52082825px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:start;line-height:125%;writing-mode:lr-tb;text-anchor:start;font-family:Sans;-inkscape-font-specification:Sans"
+ y="-89.103142"
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+ sodipodi:role="line"
+ id="tspan3521">2. Application in atomic stage</tspan><tspan
+
style="font-size:21.52082825px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:start;line-height:125%;writing-mode:lr-tb;text-anchor:start;font-family:Sans;-inkscape-font-specification:Sans"
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+ sodipodi:role="line"
+ id="tspan3539"> dequeues events from</tspan><tspan
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+ y="-35.301067"
+ x="310.42673"
+ sodipodi:role="line"
+ id="tspan3551"> eventdev.</tspan><tspan
+
style="font-size:21.52082825px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:start;line-height:125%;writing-mode:lr-tb;text-anchor:start;font-family:Sans;-inkscape-font-specification:Sans"
+ y="-8.400032"
+ x="310.42673"
+ sodipodi:role="line"
+ id="tspan3523" /><tspan
+
style="font-size:21.52082825px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:start;line-height:125%;writing-mode:lr-tb;text-anchor:start;font-family:Sans;-inkscape-font-specification:Sans"
+ y="18.501003"
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+ sodipodi:role="line"
+ id="tspan3525">3. Crypto operations are</tspan><tspan
+
style="font-size:21.52082825px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:start;line-height:125%;writing-mode:lr-tb;text-anchor:start;font-family:Sans;-inkscape-font-specification:Sans"
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+ sodipodi:role="line"
+ id="tspan3541"> submitted to cryptodev.</tspan><tspan
+
style="font-size:21.52082825px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:start;line-height:125%;writing-mode:lr-tb;text-anchor:start;font-family:Sans;-inkscape-font-specification:Sans"
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+ sodipodi:role="line"
+ id="tspan3527" /><tspan
+
style="font-size:21.52082825px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:start;line-height:125%;writing-mode:lr-tb;text-anchor:start;font-family:Sans;-inkscape-font-specification:Sans"
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+ sodipodi:role="line"
+ id="tspan3529">4. Crypto adapter dequeues</tspan><tspan
+
style="font-size:21.52082825px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:start;line-height:125%;writing-mode:lr-tb;text-anchor:start;font-family:Sans;-inkscape-font-specification:Sans"
+ y="126.10514"
+ x="310.42673"
+ sodipodi:role="line"
+ id="tspan3545"> crypto completions from</tspan><tspan
+
style="font-size:21.52082825px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:start;line-height:125%;writing-mode:lr-tb;text-anchor:start;font-family:Sans;-inkscape-font-specification:Sans"
+ y="153.00618"
+ x="310.42673"
+ sodipodi:role="line"
+ id="tspan3547"> cryptodev</tspan><tspan
+
style="font-size:21.52082825px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:start;line-height:125%;writing-mode:lr-tb;text-anchor:start;font-family:Sans;-inkscape-font-specification:Sans"
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+ x="310.42673"
+ sodipodi:role="line"
+ id="tspan3531" /><tspan
+
style="font-size:21.52082825px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:start;line-height:125%;writing-mode:lr-tb;text-anchor:start;font-family:Sans;-inkscape-font-specification:Sans"
+ y="206.80826"
+ x="310.42673"
+ sodipodi:role="line"
+ id="tspan3533">5. Crypto adapter enqueues</tspan><tspan
+
style="font-size:21.52082825px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:start;line-height:125%;writing-mode:lr-tb;text-anchor:start;font-family:Sans;-inkscape-font-specification:Sans"
+ y="233.70929"
+ x="310.42673"
+ sodipodi:role="line"
+ id="tspan3549"> events to the eventdev</tspan><tspan
+
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+ y="260.61032"
+ x="310.42673"
+ sodipodi:role="line"
+ id="tspan3535" /><tspan
+
style="font-size:21.52082825px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:start;line-height:125%;writing-mode:lr-tb;text-anchor:start;font-family:Sans;-inkscape-font-specification:Sans"
+ y="287.51135"
+ x="310.42673"
+ sodipodi:role="line"
+ id="tspan3537">6. Events to the next stage</tspan></text>
+ </g>
+ </g>
+</svg>
diff --git a/doc/guides/prog_guide/index.rst b/doc/guides/prog_guide/index.rst
index 235ad02..8a38c37 100644
--- a/doc/guides/prog_guide/index.rst
+++ b/doc/guides/prog_guide/index.rst
@@ -44,6 +44,7 @@ Programmer's Guide
eventdev
event_ethernet_rx_adapter
event_timer_adapter
+ event_crypto_adapter
qos_framework
power_man
packet_classif_access_ctrl
diff --git a/doc/guides/rel_notes/release_18_05.rst
b/doc/guides/rel_notes/release_18_05.rst
index 0ae61e8..79e60d1 100644
--- a/doc/guides/rel_notes/release_18_05.rst
+++ b/doc/guides/rel_notes/release_18_05.rst
@@ -16,6 +16,12 @@ DPDK Release 18.05
xdg-open build/doc/html/guides/rel_notes/release_18_05.html
+* **Added Event Crypto Adapter Library.**
+
+ Added the Event Crypto Adapter Library. This library extends the
+ event-based model by introducing APIs that allow applications to
+ enqueue/dequeue crypto operations to/from cryptodev as events scheduled
+ by an event device.
New Features
------------
--
1.9.1
