vfio: support hotplug

[dpdk.git] / doc / guides / rel_notes / release_17_05.rst

diff --git a/doc/guides/rel_notes/release_17_05.rst b/doc/guides/rel_notes/release_17_05.rst
index 25d8549..c4bb49a 100644 (file)
--- a/doc/guides/rel_notes/release_17_05.rst
+++ b/doc/guides/rel_notes/release_17_05.rst
@@ -47,10 +47,22 @@ New Features
   to request the driver to release mbufs from their Tx ring that are no longer
   in use, independent of whether or not the ``tx_rs_thresh`` has been crossed.
 
+* **Added descriptor status ethdev API.**
+
+  Added a new API to get the status of a descriptor.
+
+  For Rx, it is almost similar to the ``rx_descriptor_done`` API, except
+  it differentiates descriptors which are hold by the driver and not
+  returned to the hardware. For Tx, it is a new API.
+
 * **Increased number of next hops for LPM IPv6 to 2^21.**
 
   The next_hop field is extended from 8 bits to 21 bits for IPv6.
 
+* **Added VFIO hotplug support.**
+
+  How hotplug supported with UIO and VFIO drivers.
+
 * **Added powerpc support in pci probing for vfio-pci devices.**
 
   sPAPR IOMMU based pci probing enabled for vfio-pci devices.
@@ -135,6 +147,30 @@ API Changes
   * removed the build-time setting ``CONFIG_RTE_RING_SPLIT_PROD_CONS``
   * removed the build-time setting ``CONFIG_RTE_LIBRTE_RING_DEBUG``
   * removed the build-time setting ``CONFIG_RTE_RING_PAUSE_REP_COUNT``
+  * removed the function ``rte_ring_set_water_mark`` as part of a general
+    removal of watermarks support in the library.
+  * added an extra parameter to the burst/bulk enqueue functions to
+    return the number of free spaces in the ring after enqueue. This can
+    be used by an application to implement its own watermark functionality.
+  * added an extra parameter to the burst/bulk dequeue functions to return
+    the number elements remaining in the ring after dequeue.
+  * changed the return value of the enqueue and dequeue bulk functions to
+    match that of the burst equivalents. In all cases, ring functions which
+    operate on multiple packets now return the number of elements enqueued
+    or dequeued, as appropriate. The updated functions are:
+
+    - ``rte_ring_mp_enqueue_bulk``
+    - ``rte_ring_sp_enqueue_bulk``
+    - ``rte_ring_enqueue_bulk``
+    - ``rte_ring_mc_dequeue_bulk``
+    - ``rte_ring_sc_dequeue_bulk``
+    - ``rte_ring_dequeue_bulk``
+
+    NOTE: the above functions all have different parameters as well as
+    different return values, due to the other listed changes above. This
+    means that all instances of the functions in existing code will be
+    flagged by the compiler. The return value usage should be checked
+    while fixing the compiler error due to the extra parameter.
 
 ABI Changes
 -----------