+* mbuf: The control mbuf API has been removed in v18.05. The impacted
+ functions and macros are:
+
+ - ``rte_ctrlmbuf_init()``
+ - ``rte_ctrlmbuf_alloc()``
+ - ``rte_ctrlmbuf_free()``
+ - ``rte_ctrlmbuf_data()``
+ - ``rte_ctrlmbuf_len()``
+ - ``rte_is_ctrlmbuf()``
+ - ``CTRL_MBUF_FLAG``
+
+ The packet mbuf API should be used as a replacement.
+
+* meter: updated to accommodate configuration profiles.
+
+ The meter API is changed to support meter configuration profiles. The
+ configuration profile represents the set of configuration parameters
+ for a given meter object, such as the rates and sizes for the token
+ buckets. These configuration parameters were previously the part of meter
+ object internal data strcuture. The separation of the configuration
+ parameters from meter object data structure results in reducing its
+ memory footprint which helps in better cache utilization when large number
+ of meter objects are used.
+
+* ethdev, in struct ``struct rte_eth_dev_info``, field ``rte_pci_device *pci_dev``
+ replaced with field ``struct rte_device *device``.
+
+* **Changes to semantics of rte_eth_dev_configure() parameters.**
+
+ If both the ``nb_rx_q`` and ``nb_tx_q`` parameters are zero,
+ ``rte_eth_dev_configure`` will now use PMD-recommended queue sizes, or if
+ recommendations are not provided by the PMD the function will use ethdev
+ fall-back values. Previously setting both of the parameters to zero would
+ have resulted in ``-EINVAL`` being returned.
+
+* **Changes to semantics of rte_eth_rx_queue_setup() parameters.**
+
+ If the ``nb_rx_desc`` parameter is zero, ``rte_eth_rx_queue_setup`` will
+ now use the PMD-recommended Rx ring size, or in the case where the PMD
+ does not provide a recommendation, will use an ethdev-provided
+ fall-back value. Previously, setting ``nb_rx_desc`` to zero would have
+ resulted in an error.
+
+* **Changes to semantics of rte_eth_tx_queue_setup() parameters.**
+
+ If the ``nb_tx_desc`` parameter is zero, ``rte_eth_tx_queue_setup`` will
+ now use the PMD-recommended Tx ring size, or in the case where the PMD
+ does not provide a recoomendation, will use an ethdev-provided
+ fall-back value. Previously, setting ``nb_tx_desc`` to zero would have
+ resulted in an error.
+