-.. 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
-----------
Only Testpoint is validated with DPDK, the latest version that has been
validated with DPDK is 4.1.6.
+Support for Switch Restart
+~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+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 striping
~~~~~~~~~~~~
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``.
-
+host interface. So, keeping CRC is not supported.
Maximum packet length
~~~~~~~~~~~~~~~~~~~~~
projects / ceph.git / blobdiff