[v3,3/5] eventdev/rx_adapter: introduce per queue event buffer
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Commit Message
To configure per queue event buffer size, application sets
``rte_event_eth_rx_adapter_params::use_queue_event_buf`` flag
as true and is passed to ``rte_event_eth_rx_adapter_create_with_params``
api.
The per queue event buffer size is populated in
``rte_event_eth_rx_adapter_queue_conf::event_buf_size`` and passed
to ``rte_event_eth_rx_adapter_queue_add`` api.
Signed-off-by: Naga Harish K S V <s.v.naga.harish.k@intel.com>
---
.../prog_guide/event_ethernet_rx_adapter.rst | 19 ++++++++++++-------
lib/eventdev/rte_event_eth_rx_adapter.h | 4 ++++
2 files changed, 16 insertions(+), 7 deletions(-)
@@ -62,12 +62,14 @@ service function and needs to create an event port for it. The callback is
expected to fill the ``struct rte_event_eth_rx_adapter_conf structure``
passed to it.
-If the application desires to control the event buffer size, it can use the
-``rte_event_eth_rx_adapter_create_with_params()`` api. The event buffer size is
-specified using ``struct rte_event_eth_rx_adapter_params::event_buf_size``.
-The function is passed the 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.
+If the application desires to control the event buffer size at adapter level,
+it can use the ``rte_event_eth_rx_adapter_create_with_params()`` api. The event
+buffer size is specified using ``struct rte_event_eth_rx_adapter_params::
+event_buf_size``. To configure the event buffer size at queue level, the boolean
+flag ``struct rte_event_eth_rx_adapter_params::use_queue_event_buf`` need to be
+set to true. The function is passed the 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.
Adding Rx Queues to the Adapter Instance
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
@@ -79,7 +81,9 @@ parameter. Event information for packets from this Rx queue is encoded in the
``ev`` field of ``struct rte_event_eth_rx_adapter_queue_conf``. The
servicing_weight member of the struct rte_event_eth_rx_adapter_queue_conf
is the relative polling frequency of the Rx queue and is applicable when the
-adapter uses a service core function.
+adapter uses a service core function. The applications can configure queue
+event buffer size in ``struct rte_event_eth_rx_adapter_queue_conf::event_buf_size``
+parameter.
.. code-block:: c
@@ -90,6 +94,7 @@ adapter uses a service core function.
queue_config.rx_queue_flags = 0;
queue_config.ev = ev;
queue_config.servicing_weight = 1;
+ queue_config.event_buf_size = 1024;
err = rte_event_eth_rx_adapter_queue_add(id,
eth_dev_id,
@@ -199,6 +199,8 @@ struct rte_event_eth_rx_adapter_queue_conf {
* Valid when RTE_EVENT_ETH_RX_ADAPTER_QUEUE_EVENT_VECTOR flag is set in
* @see rte_event_eth_rx_adapter_queue_conf::rx_queue_flags.
*/
+ uint16_t event_buf_size;
+ /**< event buffer size for this queue */
};
/**
@@ -266,6 +268,8 @@ struct rte_event_eth_rx_adapter_params {
* This value is rounded up for better buffer utilization
* and performance.
*/
+ bool use_queue_event_buf;
+ /**< flag to indicate that event buffer is separate for each queue */
};
/**