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Running the Application
=======================

EAL Command-line Options
------------------------

The following are the EAL command-line options that can be used in conjunction with the testpmd,
or any other DPDK application.
See the DPDK Getting Started Guides for more information on these options.

*   ``-c COREMASK``

    Set the hexadecimal bitmask of the cores to run on.

*   ``-l CORELIST``

    List of cores to run on

    The argument format is ``<c1>[-c2][,c3[-c4],...]``
    where ``c1``, ``c2``, etc are core indexes between 0 and 128.

*   ``--lcores COREMAP``

    Map lcore set to physical cpu set

    The argument format is::

       <lcores[@cpus]>[<,lcores[@cpus]>...]

    Lcore and CPU lists are grouped by ``(`` and ``)`` Within the group.
    The ``-`` character is used as a range separator and ``,`` is used as a single number separator.
    The grouping ``()`` can be omitted for single element group.
    The ``@`` can be omitted if cpus and lcores have the same value.

*   ``--master-lcore ID``

    Core ID that is used as master.

*   ``-n NUM``

    Set the number of memory channels to use.

*   ``-b, --pci-blacklist domain:bus:devid.func``

    Blacklist a PCI devise to prevent EAL from using it. Multiple -b options are allowed.

*   ``-d LIB.so``

    Load an external driver. Multiple -d options are allowed.

*   ``-w, --pci-whitelist domain:bus:devid:func``

    Add a PCI device in white list.

*   ``-m MB``

    Memory to allocate. See also ``--socket-mem``.

*   ``-r NUM``

    Set the number of memory ranks (auto-detected by default).

*   ``-v``

    Display the version information on startup.

*   ``--xen-dom0``

    Support application running on Xen Domain0 without hugetlbfs.

*   ``--syslog``

    Set the syslog facility.

*   ``--socket-mem``

    Set the memory to allocate on specific sockets (use comma separated values).

*   ``--huge-dir``

    Specify the directory where the hugetlbfs is mounted.

*   ``--proc-type``

    Set the type of the current process.

*   ``--file-prefix``

    Prefix for hugepage filenames.

*   ``-vmware-tsc-map``

    Use VMware TSC map instead of native RDTSC.

*   ``--vdev``

    Add a virtual device using the format::

       <driver><id>[,key=val, ...]

    For example::

       --vdev 'eth_pcap0,rx_pcap=input.pcap,tx_pcap=output.pcap'

*   ``--base-virtaddr``

    Specify base virtual address.

*   ``--create-uio-dev``

    Create ``/dev/uioX`` (usually done by hotplug).

*   ``--no-shconf``

    No shared config (mmap-ed files).

*   ``--no-pci``

    Disable pci.

*   ``--no-hpet``

    Disable hpet.

*   ``--no-huge``

    Use malloc instead of hugetlbfs.


Testpmd Command-line Options
----------------------------

The following are the command-line options for the testpmd applications.
They must be separated from the EAL options, shown in the previous section, with a ``--`` separator:

.. code-block:: console

    sudo ./testpmd -c 0xF -n 4 -- -i --portmask=0x1 --nb-cores=2

The commandline options are:

*   ``-i, --interactive``

    Run testpmd in interactive mode.
    In this mode, the testpmd starts with a prompt that can be used to start and stop forwarding,
    configure the application and display stats on the current packet processing session.
    See :ref:`testpmd_runtime` for more details.

    In non-interactive mode,
    the application starts with the configuration specified on the command-line and
    immediately enters forwarding mode.

*   ``-h, --help``

    Display a help message and quit.

*   ``-a, --auto-start``

    Start forwarding on initialization.

*   ``--nb-cores=N``

    Set the number of forwarding cores,
    where 1 <= N <= "number of cores" or ``CONFIG_RTE_MAX_LCORE`` from the configuration file.
    The default value is 1.

*   ``--nb-ports=N``

    Set the number of forwarding ports,
    where 1 <= N <= "number of ports" on the board or ``CONFIG_RTE_MAX_ETHPORTS`` from the configuration file.
    The default value is the number of ports on the board.

*   ``--coremask=0xXX``

    Set the hexadecimal bitmask of the cores running the packet forwarding test.
    The master lcore is reserved for command line parsing only and cannot be masked on for packet forwarding.

*   ``--portmask=0xXX``

    Set the hexadecimal bitmask of the ports used by the packet forwarding test.

*   ``--numa``

    Enable NUMA-aware allocation of RX/TX rings and of RX memory buffers (mbufs).

*   ``--port-numa-config=(port,socket)[,(port,socket)]``

    Specify the socket on which the memory pool to be used by the port will be allocated.

*   ``--ring-numa-config=(port,flag,socket)[,(port,flag,socket)]``

    Specify the socket on which the TX/RX rings for the port will be allocated.
    Where flag is 1 for RX, 2 for TX, and 3 for RX and TX.

*   ``--socket-num=N``

    Set the socket from which all memory is allocated in NUMA mode,
    where 0 <= N < number of sockets on the board.

*   ``--mbuf-size=N``

    Set the data size of the mbufs used to N bytes, where N < 65536. The default value is 2048.

*   ``--total-num-mbufs=N``

    Set the number of mbufs to be allocated in the mbuf pools, where N > 1024.

*   ``--max-pkt-len=N``

    Set the maximum packet size to N bytes, where N >= 64. The default value is 1518.

*   ``--eth-peers-configfile=name``

    Use a configuration file containing the Ethernet addresses of the peer ports.
    The configuration file should contain the Ethernet addresses on separate lines::

       XX:XX:XX:XX:XX:01
       XX:XX:XX:XX:XX:02
       ...


*   ``--eth-peer=N,XX:XX:XX:XX:XX:XX``

    Set the MAC address ``XX:XX:XX:XX:XX:XX`` of the peer port N,
    where 0 <= N < ``CONFIG_RTE_MAX_ETHPORTS`` from the configuration file.

*   ``--pkt-filter-mode=mode``

    Set Flow Director mode where mode is either ``none`` (the default), ``signature`` or ``perfect``.
    See :ref:`testpmd_flow_director` for more details.

*   ``--pkt-filter-report-hash=mode``

    Set Flow Director hash match reporting mode where mode is ``none``, ``match`` (the default) or ``always``.

*   ``--pkt-filter-size=N``

    Set Flow Director allocated memory size, where N is 64K, 128K or 256K.
    Sizes are in kilobytes. The default is 64.

*   ``--pkt-filter-flexbytes-offset=N``

    Set the flexbytes offset.
    The offset is defined in words (not bytes) counted from the first byte of the destination Ethernet MAC address,
    where N is 0 <= N <= 32.
    The default value is 0x6.

*   ``--pkt-filter-drop-queue=N``

    Set the drop-queue.
    In perfect filter mode, when a rule is added with queue = -1, the packet will be enqueued into the RX drop-queue.
    If the drop-queue does not exist, the packet is dropped. The default value is N=127.

*   ``--crc-strip``

    Enable hardware CRC stripping.

*   ``--enable-rx-cksum``

    Enable hardware RX checksum offload.

*   ``--enable-scatter``

    Enable scatter (multi-segment) RX.

*   ``--disable-hw-vlan``

    Disable hardware VLAN.

*   ``--disable-hw-vlan-filter``

    Disable hardware VLAN filter.

*   ``--disable-hw-vlan-strip``

    Disable hardware VLAN strip.

*   ``--disable-hw-vlan-extend``

    Disable hardware VLAN extend.

*   ``--enable-drop-en``

    Enable per-queue packet drop for packets with no descriptors.

*   ``--disable-rss``

    Disable RSS (Receive Side Scaling).

*   ``--port-topology=mode``

    Set port topology, where mode is ``paired`` (the default) or ``chained``.

    In ``paired`` mode, the forwarding is between pairs of ports, for example: (0,1), (2,3), (4,5).

    In ``chained`` mode, the forwarding is to the next available port in the port mask, for example: (0,1), (1,2), (2,0).

    The ordering of the ports can be changed using the portlist testpmd runtime function.

*   ``--forward-mode=mode``

    Set the forwarding mode where ``mode`` is one of the following::

       io (the default)
       mac
       mac_swap
       flowgen
       rxonly
       txonly
       csum
       icmpecho
       ieee1588

*   ``--rss-ip``

    Set RSS functions for IPv4/IPv6 only.

*   ``--rss-udp``

    Set RSS functions for IPv4/IPv6 and UDP.

*   ``--rxq=N``

    Set the number of RX queues per port to N, where 1 <= N <= 65535.
    The default value is 1.

*   ``--rxd=N``

    Set the number of descriptors in the RX rings to N, where N > 0.
    The default value is 128.

*   ``--txq=N``

    Set the number of TX queues per port to N, where 1 <= N <= 65535.
    The default value is 1.

*   ``--txd=N``

    Set the number of descriptors in the TX rings to N, where N > 0.
    The default value is 512.

*   ``--burst=N``

    Set the number of packets per burst to N, where 1 <= N <= 512.
    The default value is 16.

*   ``--mbcache=N``

    Set the cache of mbuf memory pools to N, where 0 <= N <= 512.
    The default value is 16.

*   ``--rxpt=N``

    Set the prefetch threshold register of RX rings to N, where N >= 0.
    The default value is 8.

*   ``--rxht=N``

    Set the host threshold register of RX rings to N, where N >= 0.
    The default value is 8.

*   ``--rxfreet=N``

    Set the free threshold of RX descriptors to N, where 0 <= N < value of --rxd.
    The default value is 0.

*   ``--rxwt=N``

    Set the write-back threshold register of RX rings to N, where N >= 0.
    The default value is 4.

*   ``--txpt=N``

    Set the prefetch threshold register of TX rings to N, where N >= 0.
    The default value is 36.

*   ``--txht=N``

    Set the host threshold register of TX rings to N, where N >= 0.
    The default value is 0.

*   ``--txwt=N``

    Set the write-back threshold register of TX rings to N, where N >= 0.
    The default value is 0.

*   ``--txfreet=N``

    Set the transmit free threshold of TX rings to N, where 0 <= N <= value of ``--txd``.
    The default value is 0.

*   ``--txrst=N``

    Set the transmit RS bit threshold of TX rings to N, where 0 <= N <= value of ``--txd``.
    The default value is 0.

*   ``--txqflags=0xXXXXXXXX``

    Set the hexadecimal bitmask of TX queue flags, where 0 <= N <= 0x7FFFFFFF.
    The default value is 0.

    .. note::

       When using hardware offload functions such as vlan or checksum
       add ``txqflags=0`` to force the full-featured TX code path.
       In some PMDs this may already be the default.


*   ``--rx-queue-stats-mapping=(port,queue,mapping)[,(port,queue,mapping)]``

    Set the RX queues statistics counters mapping 0 <= mapping <= 15.

*   ``--tx-queue-stats-mapping=(port,queue,mapping)[,(port,queue,mapping)]``

    Set the TX queues statistics counters mapping 0 <= mapping <= 15.

*   ``--no-flush-rx``

    Don't flush the RX streams before starting forwarding. Used mainly with the PCAP PMD.

*   ``--txpkts=X[,Y]``

    Set TX segment sizes.

*   ``--disable-link-check``

    Disable check on link status when starting/stopping ports.