X-Git-Url: http://git.droids-corp.org/?a=blobdiff_plain;ds=inline;f=doc%2Fguides%2Fnics%2Fszedata2.rst;h=30710a80b8ad325678654d672ab10e6f2a1c6c4c;hb=0f96499d5d3655bd0ed76c14cd4d241239c0272b;hp=cb1ec31a202f1f382fb083597ba3a83686bb2970;hpb=35b09d76f89e7d5a4f38a2926cf6915028ed1e56;p=dpdk.git
diff --git a/doc/guides/nics/szedata2.rst b/doc/guides/nics/szedata2.rst
index cb1ec31a20..30710a80b8 100644
--- a/doc/guides/nics/szedata2.rst
+++ b/doc/guides/nics/szedata2.rst
@@ -1,46 +1,19 @@
-.. BSD LICENSE
+.. SPDX-License-Identifier: BSD-3-Clause
Copyright 2015 - 2016 CESNET
- 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 CESNET 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.
SZEDATA2 poll mode driver library
=================================
-The SZEDATA2 poll mode driver library implements support for cards from COMBO
-family (**COMBO-80G**, **COMBO-100G**).
-The SZEDATA2 PMD uses interface provided by libsze2 library to communicate
-with COMBO cards over sze2 layer.
+The SZEDATA2 poll mode driver library implements support for the Netcope
+FPGA Boards (**NFB-40G2, NFB-100G2, NFB-200G2QL**) and Silicom **FB2CGG3** card,
+FPGA-based programmable NICs. The SZEDATA2 PMD uses interface provided by the libsze2
+library to communicate with the NFB cards over the sze2 layer.
-More information about family of
-`COMBO cards `_
+More information about the
+`NFB cards `_
and used technology
-(`NetCOPE platform `_) can be
-found on the `Liberouter website `_.
+(`Netcope Development Kit `_)
+can be found on the `Netcope Technologies website `_.
.. note::
@@ -70,14 +43,25 @@ separately:
* **Kernel modules**
+ * combo6core
* combov3
- * szedata2_cv3
+ * szedata2
+ * szedata2_cv3 or szedata2_cv3_fdt
Kernel modules manage initialization of hardware, allocation and
sharing of resources for user space applications.
Information about getting the dependencies can be found `here
-`_.
+`_.
+
+Versions of the packages
+~~~~~~~~~~~~~~~~~~~~~~~~
+
+The minimum version of the provided packages:
+
+* for DPDK from 18.05: **4.4.1**
+
+* for DPDK up to 18.02 (including): **3.0.5**
Configuration
-------------
@@ -89,17 +73,6 @@ These configuration options can be modified before compilation in the
Value **y** enables compilation of szedata2 PMD.
-* ``CONFIG_RTE_LIBRTE_PMD_SZEDATA2_AS`` default value: **0**
-
- This option defines type of firmware address space.
- Currently supported value is:
-
- * **0** for firmwares:
-
- * NIC_100G1_LR4
- * HANIC_100G1_LR4
- * HANIC_100G1_SR10
-
Using the SZEDATA2 PMD
----------------------
@@ -109,6 +82,45 @@ No special command line options are needed.
Kernel modules have to be loaded before running the DPDK application.
+NFB card architecture
+---------------------
+
+The NFB cards are multi-port multi-queue cards, where (generally) data from any
+Ethernet port may be sent to any queue.
+They were historically represented in DPDK as a single port.
+
+However, the new NFB-200G2QL card employs an add-on cable which allows to connect
+it to two physical PCI-E slots at the same time (see the diagram below).
+This is done to allow 200 Gbps of traffic to be transferred through the PCI-E
+bus (note that a single PCI-E 3.0 x16 slot provides only 125 Gbps theoretical
+throughput).
+
+Since each slot may be connected to a different CPU and therefore to a different
+NUMA node, the card is represented as two ports in DPDK (each with half of the
+queues), which allows DPDK to work with data from the individual queues on the
+right NUMA node.
+
+.. figure:: img/szedata2_nfb200g_architecture.*
+ :align: center
+
+ NFB-200G2QL high-level diagram
+
+Limitations
+-----------
+
+The SZEDATA2 PMD does not support operations related to Ethernet ports
+(link_up, link_down, set_mac_address, etc.).
+
+NFB cards employ multiple Ethernet ports.
+Until now, Ethernet port-related operations were performed on all of them
+(since the whole card was represented as a single port).
+With NFB-200G2QL card, this is no longer viable (see above).
+
+Since there is no fixed mapping between the queues and Ethernet ports, and since
+a single card can be represented as two ports in DPDK, there is no way of
+telling which (if any) physical ports should be associated with individual
+ports in DPDK.
+
Example of usage
----------------