DPDK实例程序：testpmd

用户手册：https://doc.dpdk.org/guides/testpmd_app_ug/index.html
还不错的入门：http://syswift.com/188.html

我的运行情况：

root@ubuntu:/home/chang/dpdk/build/app# ./testpmd -l 0-7 -n 4 -- -i
EAL: Detected 8 lcore(s)
EAL: No free hugepages reported in hugepages-1048576kB
EAL: Multi-process socket /var/run/.rte_unix
EAL: Probing VFIO support...
EAL: PCI device 0000:02:01.0 on NUMA socket -1
EAL:   Invalid NUMA socket, default to 0
EAL:   probe driver: 8086:100f net_e1000_em
EAL: PCI device 0000:02:02.0 on NUMA socket -1
EAL:   Invalid NUMA socket, default to 0
EAL:   probe driver: 8086:100f net_e1000_em
EAL: PCI device 0000:02:03.0 on NUMA socket -1
EAL:   Invalid NUMA socket, default to 0
EAL:   probe driver: 8086:100f net_e1000_em
EAL: PCI device 0000:02:04.0 on NUMA socket -1
EAL:   Invalid NUMA socket, default to 0
EAL:   probe driver: 8086:100f net_e1000_em
Interactive-mode selected
testpmd: create a new mbuf pool : n=203456, size=2176, socket=0
testpmd: preferred mempool ops selected: ring_mp_mc
Configuring Port 0 (socket 0)
Port 0: 00:0C:29:F7:4D:25
Configuring Port 1 (socket 0)
Port 1: 00:0C:29:F7:4D:2F
Checking link statuses...
Done
testpmd> start
io packet forwarding - ports=2 - cores=1 - streams=2 - NUMA support enabled, MP over anonymous pages disabled
Logical Core 1 (socket 0) forwards packets on 2 streams:
  RX P=0/Q=0 (socket 0) -> TX P=1/Q=0 (socket 0) peer=02:00:00:00:00:01
  RX P=1/Q=0 (socket 0) -> TX P=0/Q=0 (socket 0) peer=02:00:00:00:00:00

  io packet forwarding packets/burst=32
  nb forwarding cores=1 - nb forwarding ports=2
  port 0:
  CRC stripping disabled
  RX queues=1 - RX desc=1024 - RX free threshold=0
  RX threshold registers: pthresh=0 hthresh=0  wthresh=0
  TX queues=1 - TX desc=1024 - TX free threshold=0
  TX threshold registers: pthresh=0 hthresh=0  wthresh=0
  TX RS bit threshold=0 - TXQ offloads=0x0
  port 1:
  CRC stripping disabled
  RX queues=1 - RX desc=1024 - RX free threshold=0
  RX threshold registers: pthresh=0 hthresh=0  wthresh=0
  TX queues=1 - TX desc=1024 - TX free threshold=0
  TX threshold registers: pthresh=0 hthresh=0  wthresh=0
  TX RS bit threshold=0 - TXQ offloads=0x0
testpmd> stop
Telling cores to stop...
Waiting for lcores to finish...

  ---------------------- Forward statistics for port 0  ----------------------
  RX-packets: 142171         RX-dropped: 0             RX-total: 142171
  TX-packets: 164636         TX-dropped: 0             TX-total: 164636
  ----------------------------------------------------------------------------

  ---------------------- Forward statistics for port 1  ----------------------
  RX-packets: 164642         RX-dropped: 0             RX-total: 164642
  TX-packets: 142165         TX-dropped: 0             TX-total: 142165
  ----------------------------------------------------------------------------

  +++++++++++++++ Accumulated forward statistics for all ports+++++++++++++++
  RX-packets: 306813         RX-dropped: 0             RX-total: 306813
  TX-packets: 306801         TX-dropped: 0             TX-total: 306801
  ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

Done.
testpmd>