-.. BSD LICENSE
- Copyright(c) 2015-2016 Intel Corporation. All rights reserved.
- All rights reserved.
-
- Redistribution and use in source and binary forms, with or without
- modification, are permitted provided that the following conditions
- are met:
-
- * Redistributions of source code must retain the above copyright
- notice, this list of conditions and the following disclaimer.
- * Redistributions in binary form must reproduce the above copyright
- notice, this list of conditions and the following disclaimer in
- the documentation and/or other materials provided with the
- distribution.
- * Neither the name of Intel Corporation nor the names of its
- contributors may be used to endorse or promote products derived
- from this software without specific prior written permission.
-
- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+.. SPDX-License-Identifier: BSD-3-Clause
+ Copyright(c) 2015-2016 Intel Corporation.
FM10K Poll Mode Driver
======================
To enable via ``RX_OLFLAGS`` use ``RTE_LIBRTE_FM10K_RX_OLFLAGS_ENABLE=y``.
-To guarantee the constraint, the following configuration flags in ``dev_conf.rxmode``
+To guarantee the constraint, the following capabilities in ``dev_conf.rxmode.offloads``
will be checked:
-* ``hw_vlan_extend``
+* ``DEV_RX_OFFLOAD_VLAN_EXTEND``
-* ``hw_ip_checksum``
+* ``DEV_RX_OFFLOAD_CHECKSUM``
-* ``header_split``
+* ``DEV_RX_OFFLOAD_HEADER_SPLIT``
* ``fdir_conf->mode``
Features not Supported by TX Vector PMD
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-TX vPMD only works when ``txq_flags`` is set to ``FM10K_SIMPLE_TX_FLAG``.
-This means that it does not support TX multi-segment, VLAN offload or TX csum
-offload. The following MACROs are used for these three features:
+TX vPMD only works when offloads is set to 0
-* ``ETH_TXQ_FLAGS_NOMULTSEGS``
-
-* ``ETH_TXQ_FLAGS_NOVLANOFFL``
-
-* ``ETH_TXQ_FLAGS_NOXSUMSCTP``
-
-* ``ETH_TXQ_FLAGS_NOXSUMUDP``
-
-* ``ETH_TXQ_FLAGS_NOXSUMTCP``
+This means that it does not support any TX offload.
Limitations
-----------
The Intel FM10000 family of NICs integrate a hardware switch and multiple host
interfaces. The FM10000 PMD driver only manages host interfaces. For the
-switch component another switch driver has to be loaded prior to to the
+switch component another switch driver has to be loaded prior to the
FM10000 PMD driver. The switch driver can be acquired from Intel support.
Only Testpoint is validated with DPDK, the latest version that has been
validated with DPDK is 4.1.6.
-CRC striping
-~~~~~~~~~~~~
+Support for Switch Restart
+~~~~~~~~~~~~~~~~~~~~~~~~~~
-The FM10000 family of NICs strip the CRC for every packets coming into the
-host interface. So, CRC will be stripped even when the
-``rxmode.hw_strip_crc`` member is set to 0 in ``struct rte_eth_conf``.
+For FM10000 multi host based design a DPDK app running in the VM or host needs
+to be aware of the switch's state since it may undergo a quit-restart. When
+the switch goes down the DPDK app will receive a LSC event indicating link
+status down, and the app should stop the worker threads that are polling on
+the Rx/Tx queues. When switch comes up, a LSC event indicating ``LINK_UP`` is
+sent to the app, which can then restart the FM10000 port to resume network
+processing.
+
+CRC stripping
+~~~~~~~~~~~~~
+The FM10000 family of NICs strip the CRC for every packets coming into the
+host interface. So, keeping CRC is not supported.
Maximum packet length
~~~~~~~~~~~~~~~~~~~~~
git.droids-corp.org / dpdk.git / blobdiff