3. Running the Application

3.1. 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 device 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.

  • --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.

  • mbuf-pool-ops-name:

    Pool ops name for mbuf to use.

  • --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 'net_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.

3.2. 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:

sudo ./testpmd -l 0-3 -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 Testpmd Runtime Functions 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.

  • --tx-first

    Start forwarding, after sending a burst of packets first.

Note

This flag should be only used in non-interactive mode.

  • --stats-period PERIOD

    Display statistics every PERIOD seconds, if interactive mode is disabled. The default value is 0, which means that the statistics will not be displayed.

  • --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). [Default setting]

  • --no-numa

    Disable 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 flow_director_filter 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.

  • --disable-crc-strip

    Disable hardware CRC stripping.

  • --enable-lro

    Enable large receive offload.

  • --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
    tm
    
  • --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.

  • --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 or total packet length. Valid for tx-only and flowgen forwarding modes.

  • --disable-link-check

    Disable check on link status when starting/stopping ports.

  • --no-lsc-interrupt

    Disable LSC interrupts for all ports, even those supporting it.

  • --no-rmv-interrupt

    Disable RMV interrupts for all ports, even those supporting it.

  • --bitrate-stats=N

    Set the logical core N to perform bitrate calculation.

  • --print-event <unknown|intr_lsc|queue_state|intr_reset|vf_mbox|macsec|intr_rmv|dev_probed|dev_released|all>

    Enable printing the occurrence of the designated event. Using all will enable all of them.

  • --mask-event <unknown|intr_lsc|queue_state|intr_reset|vf_mbox|macsec|intr_rmv|dev_probed|dev_released|all>

    Disable printing the occurrence of the designated event. Using all will disable all of them.

  • --flow-isolate-all

    Providing this parameter requests flow API isolated mode on all ports at initialization time. It ensures all traffic is received through the configured flow rules only (see flow command).

    Ports that do not support this mode are automatically discarded.

  • --tx-offloads=0xXXXXXXXX

    Set the hexadecimal bitmask of TX queue offloads. The default value is 0.