allows to save PCI bandwidth and improve performance at the cost of a
slightly higher CPU usage. Enabled by default.
+ Supported on:
+
+ - x86_64 with ConnectX4 and ConnectX4 LX
+ - Power8 with ConnectX4 LX
+
- ``txq_inline`` parameter [int]
Amount of data to be inlined during TX operations. Improves latency.
Currently supported by DPDK:
-- Mellanox OFED **3.3-1.0.0.0**.
+- Mellanox OFED **3.3-1.0.0.0** and **3.3-2.0.0.0**.
- Minimum firmware version:
* Added MTU update in non Scattered Rx mode and enabled MTU of up to 9208
with UCS Software release 2.2 on 1300 series VICs.
+* **Updated the mlx5 driver.**
+
+ The mlx5 driver was updated with changes including the following:
+
+ * Data path was refactored to bypass Verbs to improve RX and TX performance.
+ * Removed compilation parameters for inline send, ``MLX5_MAX_INLINE``, and
+ added command line parameter instead, ``txq_inline``.
+ * Improved TX scatter gather support:
+ Removed compilation parameter ``MLX5_PMD_SGE_WR_N``.
+ Scatter-gather elements is set to the maximum value the NIC supports.
+ Removed linearization logic, this decreases the memory consumption of the PMD.
+ * Improved jumbo frames support, by dynamically setting RX scatter gather elements
+ according to the MTU and mbuf size,
+ no need for compilation parameter ``MLX5_PMD_SGE_WR_N``
+
* **Added support for virtio on IBM POWER8.**
The ioports are mapped in memory when using Linux UIO.