25. 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:


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.

25.1. 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

25.2. 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.

25.3. Prerequisites

  • Custom Linux Kernel sources

    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

    git clone https://github.com/MarvellEmbeddedProcessors/mvpp2x-marvell.git -b mvpp2x-armada-17.10
  • MUSDK (Marvell User-Space SDK) sources

    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. 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:

  • DPDK environment

    Follow the DPDK Getting Started Guide for Linux to setup DPDK environment.

25.4. Config File Options

The following options can be modified in the config file.


    Toggle compilation of the librte mvpp2 driver.

25.5. 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.

25.5.1. Configuration syntax

[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>


  • <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

[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

./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

25.6. Building DPDK

Driver needs precompiled MUSDK library during compilation.

export CROSS_COMPILE=<toolchain>/bin/aarch64-linux-gnu-
./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.

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

25.7. Flow API

PPv2 offers packet classification capabilities via classifier engine which can be configured via generic flow API offered by DPDK.

25.7.1. Supported flow actions

Following flow action items are supported by the driver:

  • DROP

25.7.2. 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

25.7.3. 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 25.1 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.

25.7.4. Flow rules usage example

Before proceeding run testpmd user application:

./testpmd --vdev=eth_mvpp2,iface=eth0,iface=eth2 -c 3 -- -i --p 3 -a --disable-hw-vlan-strip Example #1

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

testpmd> flow create 0 ingress pattern ipv4 src spec src mask / 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 to and tcp source port set to 16 will be dropped. Example #3

testpmd> flow create 0 ingress pattern vlan vid spec 0x10 vid mask 0x10 / ipv4 src spec src mask dst spec dst mask / 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 and respectively will be dropped.

25.7.5. 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.

25.8. 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.

insmod musdk_uio.ko
insmod mv_pp_uio.ko
insmod mvpp2x_sysfs.ko

Additionally interfaces used by DPDK application need to be put up:

ip link set eth0 up
ip link set eth2 up

In order to run testpmd example application following command can be used:

./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