X-Git-Url: http://git.droids-corp.org/?a=blobdiff_plain;f=doc%2Fguides%2Fprog_guide%2Fevent_ethernet_rx_adapter.rst;h=c01e5a9666e9149fe21f5bbc4f732aebf31a0c2f;hb=89df2225c92c882ad8d6883be6efd507e4e77a54;hp=5eefef35525472969e959fb921ee01134b01b0de;hpb=3c838062b91f488650d71c280e1c31de74ffd429;p=dpdk.git

diff --git a/doc/guides/prog_guide/event_ethernet_rx_adapter.rst b/doc/guides/prog_guide/event_ethernet_rx_adapter.rst
index 5eefef3552..c01e5a9666 100644
--- a/doc/guides/prog_guide/event_ethernet_rx_adapter.rst
+++ b/doc/guides/prog_guide/event_ethernet_rx_adapter.rst
@@ -224,3 +224,22 @@ A loop processing ``rte_event_vector`` containing mbufs is shown below.
         case ...
         ...
         }
+
+Rx event vectorization for SW Rx adapter
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+For SW based event vectorization, i.e., when the
+``RTE_EVENT_ETH_RX_ADAPTER_CAP_INTERNAL_PORT`` is not set in the adapter's
+capabilities flags for a particular ethernet device, the service function
+creates a single event vector flow for all the mbufs arriving on the given
+Rx queue.
+The 20-bit event flow identifier is set to 12-bits of Rx queue identifier
+and 8-bits of ethernet device identifier.
+Flow identifier is formatted as follows:
+
+.. code-block:: console
+
+    19      12,11            0
+    +---------+--------------+
+    | port_id |   queue_id   |
+    +---------+--------------+