New upstream version 18.08upstream/18.08

Change-Id: I32fdf5e5016556d9c0a6d88ddaf1fc468961790a
Signed-off-by: Luca Boccassi <luca.boccassi@gmail.com>

1 files changed, 520 insertions, 0 deletions

diff --git a/doc/guides/nics/mvpp2.rst b/doc/guides/nics/mvpp2.rst
new file mode 100644
index 00000000..0408752c
--- /dev/null
+++ b/doc/guides/nics/mvpp2.rst
@@ -0,0 +1,520 @@
+..  BSD LICENSE
+    Copyright(c) 2017 Marvell International Ltd.
+    Copyright(c) 2017 Semihalf.
+    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 the copyright holder 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.
+
+.. _mvpp2_poll_mode_driver:
+
+MVPP2 Poll Mode Driver
+======================
+
+The MVPP2 PMD (librte_pmd_mvpp2) provides poll mode driver support
+for the Marvell PPv2 (Packet Processor v2) 1/10 Gbps adapter.
+
+Detailed information about SoCs that use PPv2 can be obtained here:
+
+* https://www.marvell.com/embedded-processors/armada-70xx/
+* https://www.marvell.com/embedded-processors/armada-80xx/
+
+.. Note::
+
+   Due to external dependencies, this driver is disabled by default. It must
+   be enabled manually by setting relevant configuration option manually.
+   Please refer to `Config File Options`_ section for further details.
+
+
+Features
+--------
+
+Features of the MVPP2 PMD are:
+
+- Speed capabilities
+- Link status
+- Queue start/stop
+- MTU update
+- Jumbo frame
+- Promiscuous mode
+- Allmulticast mode
+- Unicast MAC filter
+- Multicast MAC filter
+- RSS hash
+- VLAN filter
+- CRC offload
+- L3 checksum offload
+- L4 checksum offload
+- Packet type parsing
+- Basic stats
+- Extended stats
+- QoS
+- RX flow control
+- TX queue start/stop
+
+
+Limitations
+-----------
+
+- Number of lcores is limited to 9 by MUSDK internal design. If more lcores
+  need to be allocated, locking will have to be considered. Number of available
+  lcores can be changed via ``MRVL_MUSDK_HIFS_RESERVED`` define in
+  ``mrvl_ethdev.c`` source file.
+
+- Flushing vlans added for filtering is not possible due to MUSDK missing
+  functionality. Current workaround is to reset board so that PPv2 has a
+  chance to start in a sane state.
+
+
+Prerequisites
+-------------
+
+- Custom Linux Kernel sources
+
+  .. code-block:: console
+
+     git clone https://github.com/MarvellEmbeddedProcessors/linux-marvell.git -b linux-4.4.52-armada-17.10
+
+- Out of tree `mvpp2x_sysfs` kernel module sources
+
+  .. code-block:: console
+
+     git clone https://github.com/MarvellEmbeddedProcessors/mvpp2x-marvell.git -b mvpp2x-armada-17.10
+
+- MUSDK (Marvell User-Space SDK) sources
+
+  .. code-block:: console
+
+     git clone https://github.com/MarvellEmbeddedProcessors/musdk-marvell.git -b musdk-armada-17.10
+
+  MUSDK is a light-weight library that provides direct access to Marvell's
+  PPv2 (Packet Processor v2). Alternatively prebuilt MUSDK library can be
+  requested from `Marvell Extranet <https://extranet.marvell.com>`_. Once
+  approval has been granted, library can be found by typing ``musdk`` in
+  the search box.
+
+  To get better understanding of the library one can consult documentation
+  available in the ``doc`` top level directory of the MUSDK sources.
+
+  MUSDK must be configured with the following features:
+
+  .. code-block:: console
+
+     --enable-bpool-dma=64
+
+- DPDK environment
+
+  Follow the DPDK :ref:`Getting Started Guide for Linux <linux_gsg>` to setup
+  DPDK environment.
+
+
+Config File Options
+-------------------
+
+The following options can be modified in the ``config`` file.
+
+- ``CONFIG_RTE_LIBRTE_MVPP2_PMD`` (default ``n``)
+
+    Toggle compilation of the librte mvpp2 driver.
+
+
+QoS Configuration
+-----------------
+
+QoS configuration is done through external configuration file. Path to the
+file must be given as `cfg` in driver's vdev parameter list.
+
+Configuration syntax
+~~~~~~~~~~~~~~~~~~~~
+
+.. code-block:: console
+
+   [port <portnum> default]
+   default_tc = <default_tc>
+   mapping_priority = <mapping_priority>
+   policer_enable = <policer_enable>
+   token_unit = <token_unit>
+   color = <color_mode>
+   cir = <cir>
+   ebs = <ebs>
+   cbs = <cbs>
+
+   rate_limit_enable = <rate_limit_enable>
+   rate_limit = <rate_limit>
+   burst_size = <burst_size>
+
+   [port <portnum> tc <traffic_class>]
+   rxq = <rx_queue_list>
+   pcp = <pcp_list>
+   dscp = <dscp_list>
+   default_color = <default_color>
+
+   [port <portnum> tc <traffic_class>]
+   rxq = <rx_queue_list>
+   pcp = <pcp_list>
+   dscp = <dscp_list>
+
+   [port <portnum> txq <txqnum>]
+   sched_mode = <sched_mode>
+   wrr_weight = <wrr_weight>
+
+   rate_limit_enable = <rate_limit_enable>
+   rate_limit = <rate_limit>
+   burst_size = <burst_size>
+
+Where:
+
+- ``<portnum>``: DPDK Port number (0..n).
+
+- ``<default_tc>``: Default traffic class (e.g. 0)
+
+- ``<mapping_priority>``: QoS priority for mapping (`ip`, `vlan`, `ip/vlan` or `vlan/ip`).
+
+- ``<traffic_class>``: Traffic Class to be configured.
+
+- ``<rx_queue_list>``: List of DPDK RX queues (e.g. 0 1 3-4)
+
+- ``<pcp_list>``: List of PCP values to handle in particular TC (e.g. 0 1 3-4 7).
+
+- ``<dscp_list>``: List of DSCP values to handle in particular TC (e.g. 0-12 32-48 63).
+
+- ``<policer_enable>``: Enable ingress policer.
+
+- ``<token_unit>``: Policer token unit (`bytes` or `packets`).
+
+- ``<color_mode>``: Policer color mode (`aware` or `blind`).
+
+- ``<cir>``: Committed information rate in unit of kilo bits per second (data rate) or packets per second.
+
+- ``<cbs>``: Committed burst size in unit of kilo bytes or number of packets.
+
+- ``<ebs>``: Excess burst size in unit of kilo bytes or number of packets.
+
+- ``<default_color>``: Default color for specific tc.
+
+- ``<rate_limit_enable>``: Enables per port or per txq rate limiting.
+
+- ``<rate_limit>``: Committed information rate, in kilo bits per second.
+
+- ``<burst_size>``: Committed burst size, in kilo bytes.
+
+- ``<sched_mode>``: Egress scheduler mode (`wrr` or `sp`).
+
+- ``<wrr_weight>``: Txq weight.
+
+Setting PCP/DSCP values for the default TC is not required. All PCP/DSCP
+values not assigned explicitly to particular TC will be handled by the
+default TC.
+
+Configuration file example
+^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+.. code-block:: console
+
+   [port 0 default]
+   default_tc = 0
+   mapping_priority = ip
+
+   rate_limit_enable = 1
+   rate_limit = 1000
+   burst_size = 2000
+
+   [port 0 tc 0]
+   rxq = 0 1
+
+   [port 0 txq 0]
+   sched_mode = wrr
+   wrr_weight = 10
+
+   [port 0 txq 1]
+   sched_mode = wrr
+   wrr_weight = 100
+
+   [port 0 txq 2]
+   sched_mode = sp
+
+   [port 0 tc 1]
+   rxq = 2
+   pcp = 5 6 7
+   dscp = 26-38
+
+   [port 1 default]
+   default_tc = 0
+   mapping_priority = vlan/ip
+
+   policer_enable = 1
+   token_unit = bytes
+   color = blind
+   cir = 100000
+   ebs = 64
+   cbs = 64
+
+   [port 1 tc 0]
+   rxq = 0
+   dscp = 10
+
+   [port 1 tc 1]
+   rxq = 1
+   dscp = 11-20
+
+   [port 1 tc 2]
+   rxq = 2
+   dscp = 30
+
+   [port 1 txq 0]
+   rate_limit_enable = 1
+   rate_limit = 10000
+   burst_size = 2000
+
+Usage example
+^^^^^^^^^^^^^
+
+.. code-block:: console
+
+   ./testpmd --vdev=eth_mvpp2,iface=eth0,iface=eth2,cfg=/home/user/mrvl.conf \
+     -c 7 -- -i -a --disable-hw-vlan-strip --rxq=3 --txq=3
+
+
+Building DPDK
+-------------
+
+Driver needs precompiled MUSDK library during compilation.
+
+.. code-block:: console
+
+   export CROSS_COMPILE=<toolchain>/bin/aarch64-linux-gnu-
+   ./bootstrap
+   ./configure --host=aarch64-linux-gnu --enable-bpool-dma=64
+   make install
+
+MUSDK will be installed to `usr/local` under current directory.
+For the detailed build instructions please consult ``doc/musdk_get_started.txt``.
+
+Before the DPDK build process the environmental variable ``LIBMUSDK_PATH`` with
+the path to the MUSDK installation directory needs to be exported.
+
+.. code-block:: console
+
+   export LIBMUSDK_PATH=<musdk>/usr/local
+   export CROSS=aarch64-linux-gnu-
+   make config T=arm64-armv8a-linuxapp-gcc
+   sed -ri 's,(MVPP2_PMD=)n,\1y,' build/.config
+   make
+
+Flow API
+--------
+
+PPv2 offers packet classification capabilities via classifier engine which
+can be configured via generic flow API offered by DPDK.
+
+Supported flow actions
+~~~~~~~~~~~~~~~~~~~~~~
+
+Following flow action items are supported by the driver:
+
+* DROP
+* QUEUE
+
+Supported flow items
+~~~~~~~~~~~~~~~~~~~~
+
+Following flow items and their respective fields are supported by the driver:
+
+* ETH
+
+  * source MAC
+  * destination MAC
+  * ethertype
+
+* VLAN
+
+  * PCP
+  * VID
+
+* IPV4
+
+  * DSCP
+  * protocol
+  * source address
+  * destination address
+
+* IPV6
+
+  * flow label
+  * next header
+  * source address
+  * destination address
+
+* UDP
+
+  * source port
+  * destination port
+
+* TCP
+
+  * source port
+  * destination port
+
+Classifier match engine
+~~~~~~~~~~~~~~~~~~~~~~~
+
+Classifier has an internal match engine which can be configured to
+operate in either exact or maskable mode.
+
+Mode is selected upon creation of the first unique flow rule as follows:
+
+* maskable, if key size is up to 8 bytes.
+* exact, otherwise, i.e for keys bigger than 8 bytes.
+
+Where the key size equals the number of bytes of all fields specified
+in the flow items.
+
+.. table:: Examples of key size calculation
+
+   +----------------------------------------------------------------------------+-------------------+-------------+
+   | Flow pattern                                                               | Key size in bytes | Used engine |
+   +============================================================================+===================+=============+
+   | ETH (destination MAC) / VLAN (VID)                                         | 6 + 2 = 8         | Maskable    |
+   +----------------------------------------------------------------------------+-------------------+-------------+
+   | VLAN (VID) / IPV4 (source address)                                         | 2 + 4 = 6         | Maskable    |
+   +----------------------------------------------------------------------------+-------------------+-------------+
+   | TCP (source port, destination port)                                        | 2 + 2 = 4         | Maskable    |
+   +----------------------------------------------------------------------------+-------------------+-------------+
+   | VLAN (priority) / IPV4 (source address)                                    | 1 + 4 = 5         | Maskable    |
+   +----------------------------------------------------------------------------+-------------------+-------------+
+   | IPV4 (destination address) / UDP (source port, destination port)           | 6 + 2 + 2 = 10    | Exact       |
+   +----------------------------------------------------------------------------+-------------------+-------------+
+   | VLAN (VID) / IPV6 (flow label, destination address)                        | 2 + 3 + 16 = 21   | Exact       |
+   +----------------------------------------------------------------------------+-------------------+-------------+
+   | IPV4 (DSCP, source address, destination address)                           | 1 + 4 + 4 = 9     | Exact       |
+   +----------------------------------------------------------------------------+-------------------+-------------+
+   | IPV6 (flow label, source address, destination address)                     | 3 + 16 + 16 = 35  | Exact       |
+   +----------------------------------------------------------------------------+-------------------+-------------+
+
+From the user perspective maskable mode means that masks specified
+via flow rules are respected. In case of exact match mode, masks
+which do not provide exact matching (all bits masked) are ignored.
+
+If the flow matches more than one classifier rule the first
+(with the lowest index) matched takes precedence.
+
+Flow rules usage example
+~~~~~~~~~~~~~~~~~~~~~~~~
+
+Before proceeding run testpmd user application:
+
+.. code-block:: console
+
+   ./testpmd --vdev=eth_mvpp2,iface=eth0,iface=eth2 -c 3 -- -i --p 3 -a --disable-hw-vlan-strip
+
+Example #1
+^^^^^^^^^^
+
+.. code-block:: console
+
+   testpmd> flow create 0 ingress pattern eth src is 10:11:12:13:14:15 / end actions drop / end
+
+In this case key size is 6 bytes thus maskable type is selected. Testpmd
+will set mask to ff:ff:ff:ff:ff:ff i.e traffic explicitly matching
+above rule will be dropped.
+
+Example #2
+^^^^^^^^^^
+
+.. code-block:: console
+
+   testpmd> flow create 0 ingress pattern ipv4 src spec 10.10.10.0 src mask 255.255.255.0 / tcp src spec 0x10 src mask 0x10 / end action drop / end
+
+In this case key size is 8 bytes thus maskable type is selected.
+Flows which have IPv4 source addresses ranging from 10.10.10.0 to 10.10.10.255
+and tcp source port set to 16 will be dropped.
+
+Example #3
+^^^^^^^^^^
+
+.. code-block:: console
+
+   testpmd> flow create 0 ingress pattern vlan vid spec 0x10 vid mask 0x10 / ipv4 src spec 10.10.1.1 src mask 255.255.0.0 dst spec 11.11.11.1 dst mask 255.255.255.0 / end actions drop / end
+
+In this case key size is 10 bytes thus exact type is selected.
+Even though each item has partial mask set, masks will be ignored.
+As a result only flows with VID set to 16 and IPv4 source and destination
+addresses set to 10.10.1.1 and 11.11.11.1 respectively will be dropped.
+
+Limitations
+~~~~~~~~~~~
+
+Following limitations need to be taken into account while creating flow rules:
+
+* For IPv4 exact match type the key size must be up to 12 bytes.
+* For IPv6 exact match type the key size must be up to 36 bytes.
+* Following fields cannot be partially masked (all masks are treated as
+  if they were exact):
+
+  * ETH: ethertype
+  * VLAN: PCP, VID
+  * IPv4: protocol
+  * IPv6: next header
+  * TCP/UDP: source port, destination port
+
+* Only one classifier table can be created thus all rules in the table
+  have to match table format. Table format is set during creation of
+  the first unique flow rule.
+* Up to 5 fields can be specified per flow rule.
+* Up to 20 flow rules can be added.
+
+For additional information about classifier please consult
+``doc/musdk_cls_user_guide.txt``.
+
+Usage Example
+-------------
+
+MVPP2 PMD requires extra out of tree kernel modules to function properly.
+`musdk_uio` and `mv_pp_uio` sources are part of the MUSDK. Please consult
+``doc/musdk_get_started.txt`` for the detailed build instructions.
+For `mvpp2x_sysfs` please consult ``Documentation/pp22_sysfs.txt`` for the
+detailed build instructions.
+
+.. code-block:: console
+
+   insmod musdk_uio.ko
+   insmod mv_pp_uio.ko
+   insmod mvpp2x_sysfs.ko
+
+Additionally interfaces used by DPDK application need to be put up:
+
+.. code-block:: console
+
+   ip link set eth0 up
+   ip link set eth2 up
+
+In order to run testpmd example application following command can be used:
+
+.. code-block:: console
+
+   ./testpmd --vdev=eth_mvpp2,iface=eth0,iface=eth2 -c 7 -- \
+     --burst=128 --txd=2048 --rxd=1024 --rxq=2 --txq=2  --nb-cores=2 \
+     -i -a --rss-udp