From: Pavan Nikhilesh <pbhagavat...@marvell.com>
Introduce event vector transmit capability for event eth
tx adapter.
The capability indicates that the Tx adapter is capable of
transmitting event vectors.
When rte_event_vector::union_valid is set, the Tx adapter should
transmit all the packets to the rte_event_vector::port using the
rte_event_vector::queue.
If rte_event_vector::union_valid is not set then the Tx adapter
should peek into each mbuf to get the destination port and queue
pair.
Signed-off-by: Pavan Nikhilesh <pbhagavat...@marvell.com>
Acked-by: Jerin Jacob <jer...@marvell.com>
Acked-by: Jay Jayatheerthan <jay.jayatheert...@intel.com>
---
doc/guides/prog_guide/event_ethernet_tx_adapter.rst | 12 ++++++++++++
lib/librte_eventdev/rte_eventdev.h | 8 +++++++-
2 files changed, 19 insertions(+), 1 deletion(-)
diff --git a/doc/guides/prog_guide/event_ethernet_tx_adapter.rst
b/doc/guides/prog_guide/event_ethernet_tx_adapter.rst
index a8c13e136..f80d22621 100644
--- a/doc/guides/prog_guide/event_ethernet_tx_adapter.rst
+++ b/doc/guides/prog_guide/event_ethernet_tx_adapter.rst
@@ -164,3 +164,15 @@ The ``rte_event_eth_tx_adapter_stats_get()`` function
reports counters defined
in struct ``rte_event_eth_tx_adapter_stats``. The counter values are the sum of
the counts from the eventdev PMD callback if the callback is supported, and
the counts maintained by the service function, if one exists.
+
+Tx event vectorization
+~~~~~~~~~~~~~~~~~~~~~~
+
+The event device, ethernet device pairs which support the capability
+``RTE_EVENT_ETH_TX_ADAPTER_CAP_EVENT_VECTOR`` can process event vector of
mbufs.
+Additionally, application can provide a hint to the Tx adapter that all the
+mbufs are destined to the same ethernet port and queue by setting the bit
+``rte_event_vector::attr_valid`` and filling `rte_event_vector::port`` and
+``rte_event_vector::queue``.
+If ``rte_event_vector::attr_valid`` is not set then the Tx adapter should peek
+into each mbuf and transmit them to the requested ethernet port and queue pair.
diff --git a/lib/librte_eventdev/rte_eventdev.h
b/lib/librte_eventdev/rte_eventdev.h
index 936c97cc2..5f1f544cc 100644
--- a/lib/librte_eventdev/rte_eventdev.h
+++ b/lib/librte_eventdev/rte_eventdev.h
@@ -927,11 +927,13 @@ struct rte_event_vector {
/**< Indicates that the below union attributes have valid information.
*/
union {
- /* Used by Rx adapter.
+ /* Used by Rx/Tx adapter.
* Indicates that all the elements in this vector belong to the
* same port and queue pair when originating from Rx adapter,
* valid only when event type is ETHDEV_VECTOR or
* ETH_RX_ADAPTER_VECTOR.
+ * Can also be used to indicate the Tx adapter the destination
+ * port and queue of the mbufs in the vector
*/
struct {
uint16_t port;
@@ -1296,6 +1298,10 @@ rte_event_crypto_adapter_caps_get(uint8_t dev_id,
uint8_t cdev_id,
#define RTE_EVENT_ETH_TX_ADAPTER_CAP_INTERNAL_PORT 0x1
/**< This flag is sent when the PMD supports a packet transmit callback
*/
+#define RTE_EVENT_ETH_TX_ADAPTER_CAP_EVENT_VECTOR 0x2
+/**< Indicates that the Tx adapter is capable of handling event vector of
+ * mbufs.
+ */
/**
* Retrieve the event device's eth Tx adapter capabilities
--
2.17.1
