net/virtio: support LRO

[dpdk.git] / doc / guides / rel_notes / release_16_11.rst

diff --git a/doc/guides/rel_notes/release_16_11.rst b/doc/guides/rel_notes/release_16_11.rst
index 25b1ba9..decf57b 100644 (file)
--- a/doc/guides/rel_notes/release_16_11.rst
+++ b/doc/guides/rel_notes/release_16_11.rst
@@ -45,6 +45,28 @@ New Features
     in an mbuf chain and retrieve its packet type by software.
   * Added new functions ``rte_get_ptype_*()`` to dump a packet type as a string.
 
+* **Improved offloads support in mbuf.**
+
+  * Added a new function ``rte_raw_cksum_mbuf()`` to process the checksum of
+    data embedded in an mbuf chain.
+  * Added new Rx checksum flags in mbufs to describe more states: unknown,
+    good, bad, or not present (useful for virtual drivers). This modification
+    was done for IP and L4.
+  * Added a new RX LRO mbuf flag, used when packets are coalesced. This
+    flag indicates that the segment size of original packets is known.
+
+* **Added vhost-user dequeue zero copy support**
+
+  The copy in dequeue path is saved, which is meant to improve the performance.
+  In the VM2VM case, the boost is quite impressive. The bigger the packet size,
+  the bigger performance boost you may get. However, for VM2NIC case, there
+  are some limitations, yet the boost is not that impressive as VM2VM case.
+  It may even drop quite a bit for small packets.
+
+  For such reason, this feature is disabled by default. It can be enabled when
+  ``RTE_VHOST_USER_DEQUEUE_ZERO_COPY`` flag is given. Check the vhost section
+  at programming guide for more information.
+
 * **Added vhost-user indirect descriptors support.**
 
   If indirect descriptor feature is negotiated, each packet sent by the guest
@@ -61,6 +83,11 @@ New Features
 
   Added extended statistics to vhost PMD from per port perspective.
 
+* **Supported offloads with virtio.**
+
+  * Rx/Tx checksums
+  * LRO
+
 * **Added virtio NEON support for ARM.**
 
 * **Updated the ixgbe base driver.**
@@ -170,6 +197,9 @@ API Changes
 * The ``rte_ivshmem`` feature (including library and EAL code) has been removed
   in 16.11 because it had some design issues which were not planned to be fixed.
 
+* The ``file_name`` data type of ``struct rte_port_source_params`` and
+  ``struct rte_port_sink_params`` is changed from `char *`` to ``const char *``.
+
 
 ABI Changes
 -----------