-.. BSD LICENSE
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- All rights reserved.
-
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- are met:
-
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- 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
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- OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+.. SPDX-License-Identifier: BSD-3-Clause
+ Copyright(c) 2010-2016 Intel Corporation.
IXGBE Driver
============
They are transparently registered at runtime RX/TX execution if all condition checks pass.
1. To date, only an SSE version of IX GBE vPMD is available.
- To ensure that vPMD is in the binary code, ensure that the option CONFIG_RTE_IXGBE_INC_VECTOR=y is in the configure file.
Some constraints apply as pre-conditions for specific optimizations on bulk packet transfers.
The following sections explain RX and TX constraints in the vPMD.
* HW extend dual VLAN
-To guarantee the constraint, configuration flags in dev_conf.rxmode will be checked:
+To guarantee the constraint, capabilities in dev_conf.rxmode.offloads will be checked:
-* hw_vlan_strip
+* DEV_RX_OFFLOAD_VLAN_STRIP
-* hw_vlan_extend
+* DEV_RX_OFFLOAD_VLAN_EXTEND
-* hw_ip_checksum
+* DEV_RX_OFFLOAD_CHECKSUM
-* header_split
+* DEV_RX_OFFLOAD_HEADER_SPLIT
* dev_conf
fdir_conf->mode will also be checked.
+VF Runtime Options
+^^^^^^^^^^^^^^^^^^
+
+The following ``devargs`` options can be enabled at runtime. They must
+be passed as part of EAL arguments. For example,
+
+.. code-block:: console
+
+ dpdk-testpmd -a af:10.0,pflink_fullchk=1 -- -i
+
+- ``pflink_fullchk`` (default **0**)
+
+ When calling ``rte_eth_link_get_nowait()`` to get VF link status,
+ this option is used to control how VF synchronizes its status with
+ PF's. If set, VF will not only check the PF's physical link status
+ by reading related register, but also check the mailbox status. We
+ call this behavior as fully checking. And checking mailbox will
+ trigger PF's mailbox interrupt generation. If unset, the application
+ can get the VF's link status quickly by just reading the PF's link
+ status register, this will avoid the whole system's mailbox interrupt
+ generation.
+
+ ``rte_eth_link_get()`` will still use the mailbox method regardless
+ of the pflink_fullchk setting.
+
RX Burst Size
^^^^^^^^^^^^^
Feature not Supported by TX Vector PMD
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-TX vPMD only works when txq_flags is set to IXGBE_SIMPLE_FLAGS.
+TX vPMD only works when offloads is set to 0
-This means that it does not support TX multi-segment, VLAN offload and TX csum offload.
-The following MACROs are used for these three features:
-
-* 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.
Application Programming Interface
---------------------------------
~~~~~
When running l3fwd with vPMD, there is one thing to note.
-In the configuration, ensure that port_conf.rxmode.hw_ip_checksum=0.
+In the configuration, ensure that DEV_RX_OFFLOAD_CHECKSUM in port_conf.rxmode.offloads is NOT set.
Otherwise, by default, RX vPMD is disabled.
load_balancer
~~~~~~~~~~~~~
-As in the case of l3fwd, set configure port_conf.rxmode.hw_ip_checksum=0 to enable vPMD.
+As in the case of l3fwd, to enable vPMD, do NOT set DEV_RX_OFFLOAD_CHECKSUM in port_conf.rxmode.offloads.
In addition, for improved performance, use -bsz "(32,32),(64,64),(32,32)" in load_balancer to avoid using the default burst size of 144.
``rte_eth_dev_mac_addr_add()`` function can be used to add a VF's MAC address,
as a workaround.
+X550 does not support legacy interrupt mode
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+Description
+^^^^^^^^^^^
+X550 cannot get interrupts if using ``uio_pci_generic`` module or using legacy
+interrupt mode of ``igb_uio`` or ``vfio``. Because the errata of X550 states
+that the Interrupt Status bit is not implemented. The errata is the item #22
+from `X550 spec update <https://www.intel.com/content/dam/www/public/us/en/
+documents/specification-updates/ethernet-x550-spec-update.pdf>`_
+
+Implication
+^^^^^^^^^^^
+When using ``uio_pci_generic`` module or using legacy interrupt mode of
+``igb_uio`` or ``vfio``, the Interrupt Status bit would be checked if the
+interrupt is coming. Since the bit is not implemented in X550, the irq cannot
+be handled correctly and cannot report the event fd to DPDK apps. Then apps
+cannot get interrupts and ``dmesg`` will show messages like ``irq #No.: ``
+``nobody cared.``
+
+Workaround
+^^^^^^^^^^
+Do not bind the ``uio_pci_generic`` module in X550 NICs.
+Do not bind ``igb_uio`` with legacy mode in X550 NICs.
+Before binding ``vfio`` with legacy mode in X550 NICs, use ``modprobe vfio ``
+``nointxmask=1`` to load ``vfio`` module if the intx is not shared with other
+devices.
+
+RSS isn't supported when QinQ is enabled
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+Due to FW limitation, IXGBE doesn't support RSS when QinQ is enabled currently.
+
+UDP with zero checksum is reported as error
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+Intel 82599 10 Gigabit Ethernet Controller Specification Update (Revision 2.87)
+Errata: 44 Integrity Error Reported for IPv4/UDP Packets With Zero Checksum
+
+To support UDP zero checksum, the zero and bad UDP checksum packet is marked as
+RTE_MBUF_F_RX_L4_CKSUM_UNKNOWN, so the application needs to recompute the checksum to
+validate it.
+
+Inline crypto processing support
+--------------------------------
+
+Inline IPsec processing is supported for ``RTE_SECURITY_ACTION_TYPE_INLINE_CRYPTO``
+mode for ESP packets only:
+
+- ESP authentication only: AES-128-GMAC (128-bit key)
+- ESP encryption and authentication: AES-128-GCM (128-bit key)
+
+IPsec Security Gateway Sample Application supports inline IPsec processing for
+ixgbe PMD.
+
+For more details see the IPsec Security Gateway Sample Application and Security
+library documentation.
+
+
+Virtual Function Port Representors
+----------------------------------
+The IXGBE PF PMD supports the creation of VF port representors for the control
+and monitoring of IXGBE virtual function devices. Each port representor
+corresponds to a single virtual function of that device. Using the ``devargs``
+option ``representor`` the user can specify which virtual functions to create
+port representors for on initialization of the PF PMD by passing the VF IDs of
+the VFs which are required.::
+
+ -a DBDF,representor=[0,1,4]
+
+Currently hot-plugging of representor ports is not supported so all required
+representors must be specified on the creation of the PF.
Supported Chipsets and NICs
---------------------------
git.droids-corp.org / dpdk.git / blobdiff