- Hardware checksum offloads.
- Flow director (RTE_FDIR_MODE_PERFECT, RTE_FDIR_MODE_PERFECT_MAC_VLAN and
RTE_ETH_FDIR_REJECT).
-- Flow API.
+- Flow API, including :ref:`flow_isolated_mode`.
- Multiple process.
- KVM and VMware ESX SR-IOV modes are supported.
- RSS hash result is supported.
This option has no performance impact.
+- ``CONFIG_RTE_IBVERBS_LINK_STATIC`` (default **n**)
+
+ Embed static flavour of the dependencies **libibverbs** and **libmlx5**
+ in the PMD shared library or the executable static binary.
+
- ``CONFIG_RTE_LIBRTE_MLX5_DEBUG`` (default **n**)
Toggle debugging code and stricter compilation flags. Enabling this option
adds additional run-time checks and debugging messages at the cost of
lower performance.
+.. note::
+
+ For Bluefield, target should be set to ``arm64-bluefield-linuxapp-gcc``. This
+ will enable ``CONFIG_RTE_LIBRTE_MLX5_PMD`` and set ``RTE_CACHE_LINE_SIZE`` to
+ 64. Default armv8a configuration of make build and meson build set it to 128
+ then brings performance degradation.
+
Environment variables
~~~~~~~~~~~~~~~~~~~~~
enabled and most useful when ``CONFIG_RTE_EAL_PMD_PATH`` is also set,
since ``LD_LIBRARY_PATH`` has no effect in this case.
-- ``MLX5_PMD_ENABLE_PADDING``
-
- Enables HW packet padding in PCI bus transactions.
-
- When packet size is cache aligned and CRC stripping is enabled, 4 fewer
- bytes are written to the PCI bus. Enabling padding makes such packets
- aligned again.
-
- In cases where PCI bandwidth is the bottleneck, padding can improve
- performance by 10%.
-
- This is disabled by default since this can also decrease performance for
- unaligned packet sizes.
-
- ``MLX5_SHUT_UP_BF``
Configures HW Tx doorbell register as IO-mapped.
- CPU having 128B cacheline with ConnectX-5 and Bluefield.
+- ``rxq_pkt_pad_en`` parameter [int]
+
+ A nonzero value enables padding Rx packet to the size of cacheline on PCI
+ transaction. This feature would waste PCI bandwidth but could improve
+ performance by avoiding partial cacheline write which may cause costly
+ read-modify-copy in memory transaction on some architectures. Disabled by
+ default.
+
+ Supported on:
+
+ - x86_64 with ConnectX-4, ConnectX-4 LX, ConnectX-5, ConnectX-6 and Bluefield.
+ - POWER8 and ARMv8 with ConnectX-4 LX, ConnectX-5, ConnectX-6 and Bluefield.
+
- ``mprq_en`` parameter [int]
A nonzero value enables configuring Multi-Packet Rx queues. Rx queue is
- **Firmware update**
- Mellanox OFED releases include firmware updates for
+ Mellanox OFED/EN releases include firmware updates for
ConnectX-4/ConnectX-5/ConnectX-6/Bluefield adapters.
Because each release provides new features, these updates must be applied to
~~~~~~~~~~~~
Either RDMA Core library with a recent enough Linux kernel release
-(recommended) or Mellanox OFED, which provides compatibility with older
+(recommended) or Mellanox OFED/EN, which provides compatibility with older
releases.
RMDA Core with Linux Kernel
- rdma-core version 18.0 or above built with 32bit support.
- Kernel version 4.14.41 or above.
+- Starting with rdma-core v21, static libraries can be built::
+
+ cd build
+ CFLAGS=-fPIC cmake -DIN_PLACE=1 -DENABLE_STATIC=1 -GNinja ..
+ ninja
+
.. _`Linux installation documentation`: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git/plain/Documentation/admin-guide/README.rst
.. _`RDMA Core installation documentation`: https://raw.githubusercontent.com/linux-rdma/rdma-core/master/README.md
-Mellanox OFED
-^^^^^^^^^^^^^
+If rdma-core libraries are built but not installed, DPDK makefile can link them,
+thanks to these environment variables:
+
+ - ``EXTRA_CFLAGS=-I/path/to/rdma-core/build/include``
+ - ``EXTRA_LDFLAGS=-L/path/to/rdma-core/build/lib``
+ - ``PKG_CONFIG_PATH=/path/to/rdma-core/build/lib/pkgconfig``
+
+Mellanox OFED/EN
+^^^^^^^^^^^^^^^^
-- Mellanox OFED version: **4.4, 4.5**.
+- Mellanox OFED version: **4.4, 4.5** / Mellanox EN version: **4.5**
- firmware version:
- ConnectX-4: **12.21.1000** and above.
may not be supported at the moment (this is a work in progress).
`Mellanox OFED
-<http://www.mellanox.com/page/products_dyn?product_family=26&mtag=linux>`__
-includes the necessary support and should be used in the meantime. For DPDK,
+<http://www.mellanox.com/page/products_dyn?product_family=26&mtag=linux>`__ and
+`Mellanox EN
+<http://www.mellanox.com/page/products_dyn?product_family=27&mtag=linux>`__
+include the necessary support and should be used in the meantime. For DPDK,
only libibverbs, libmlx5, mlnx-ofed-kernel packages and firmware updates are
required from that distribution.
.. note::
- Several versions of Mellanox OFED are available. Installing the version
+ Several versions of Mellanox OFED/EN are available. Installing the version
this DPDK release was developed and tested against is strongly
recommended. Please check the `prerequisites`_.
* Mellanox(R) ConnectX(R)-5 100G MCX556A-ECAT (2x100G)
* Mellanox(R) ConnectX(R)-5 Ex EN 100G MCX516A-CDAT (2x100G)
-Quick Start Guide on OFED
--------------------------
+Quick Start Guide on OFED/EN
+----------------------------
-1. Download latest Mellanox OFED. For more info check the `prerequisites`_.
+1. Download latest Mellanox OFED/EN. For more info check the `prerequisites`_.
2. Install the required libraries and kernel modules either by installing
- only the required set, or by installing the entire Mellanox OFED:
+ only the required set, or by installing the entire Mellanox OFED/EN:
.. code-block:: console
modprobe -a ib_uverbs mlx5_core mlx5_ib
- Alternatively if MLNX_OFED is fully installed, the following script can
- be run:
+ Alternatively if MLNX_OFED/MLNX_EN is fully installed, the following script
+ can be run:
.. code-block:: console
git.droids-corp.org / dpdk.git / blobdiff