eventdev: add Rx timestamp

[dpdk.git] / lib / librte_eventdev / rte_event_eth_rx_adapter.h

diff --git a/lib/librte_eventdev/rte_event_eth_rx_adapter.h b/lib/librte_eventdev/rte_event_eth_rx_adapter.h
index c20507b..fc9da14 100644 (file)
--- a/lib/librte_eventdev/rte_event_eth_rx_adapter.h
+++ b/lib/librte_eventdev/rte_event_eth_rx_adapter.h
@@ -47,7 +47,11 @@
  *
  * The adapter uses a EAL service core function for SW based packet transfer
  * and uses the eventdev PMD functions to configure HW based packet transfer
- * between the ethernet device and the event device.
+ * between the ethernet device and the event device. For SW based packet
+ * transfer, if the mbuf does not have a timestamp set, the adapter adds a
+ * timestamp to the mbuf using rte_get_tsc_cycles(), this provides a more
+ * accurate timestamp as compared to if the application were to set the time
+ * stamp since it avoids event device schedule latency.
  *
  * The ethernet Rx event adapter's functions are:
  *  - rte_event_eth_rx_adapter_create_ext()