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Hardware Test

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Yuta edited this page Aug 18, 2021 · 8 revisions

Hardware Test

Firstly, you need to compile hardware test cores.

# source NetFPGA-PLUS-dev/tools/settings.sh
# cd NetFPGA-PLUS-dev/
# make

Network Connections

reference_switch, reference_switch_lite, and reference_router

You need to connect NF_PLUS card to a commercial NIC. Connection information is stored in ${NF_PLUS}/hw/projects/${proj_name}/test/connections/conn . You can see the file contents like below.

nf0:eth1
nf1:eth2

For instance, port "nf0" is connected to port "eth1" and port "nf1" is connected to port "eth1", as shown in the figure below. Connection for Hardware Test

Network information can be setup by ${NF_PLUS}/hw/projects/${proj_name}/test/global/setup You can specify the IPv4 address information to the network interface.

For example, you can see the file in ${NF_PLUS}/hw/projects/reference_switch/test/global/setup.

from subprocess import Popen, PIPE

proc = Popen(["ifconfig","eth1","192.168.100.1"], stdout=PIPE)
proc = Popen(["ifconfig","eth2","192.168.101.1"], stdout=PIPE)
proc = Popen(["ifconfig","nf0","192.168.200.1"], stdout=PIPE)
proc = Popen(["ifconfig","nf1","192.168.201.1"], stdout=PIPE)

reference_nic

Loopback test is assumed in reference_nic hardware test. So, you need external loopback module for hardware testing. If you don't have the equipment, you can also try it with CMAC loopback setting.

Loopback Test

In reference_nic, loopback module is required. If you don't have external loopback module, you can test loopback test with enabled GT_LOOPBACK_REG (page 192 on cmac_usplus v3_1) on both CMACs with NF_PLUS card.

# ${NF_PLUS}/sw/app/rwaxi -a 0x8090 -w 1
# ${NF_PLUS}/sw/app/rwaxi -a 0xc090 -w 1

Hardware test

In hardware test, you can execute the test scripts in a following steps. "nf_test.py" is a script to manipulate hardware test inside NF_PLUS. If you want to run both_learning_sw, you can specify "learning" as --major and "sw" as --minor.

# cd tools/scripts/
# ./nf-test.py --major learning --minor sw  hw
Project major minor
reference_switch learning sw
simple broadcast
reference_switch_lite learning sw
simple broadcast
reference_nic inc size
loopback maxsize
loopback minsize
loopback random
reference_router arp misses
badipchksum packet
invalidttl packet
ipdestfilter hit
lpm generic
lpm misses
lpm nexthop
nonip packet
nonipv4 packet
packet forwarding
router table
wrong destMAC

Tips

If you failed in hardware test, as you get expected packet not seen, it might be packets loss on capturing tools. To avoid packets loss on host side, you can add delay interval to packet injecting.

You can add time.sleep(0.1) on each hw test script(run.py) ${NF_PLUS}/hw/projects/${project}/test/both_${major}_${minor}/run.py

import time

    if isHW():
        for port in range(num_ports):
            DA = "00:0a:35:03:00:%02x"%port
            pkt = make_IP_pkt(dst_MAC=DA, src_MAC=SA, dst_IP=DST_IP,
                             src_IP=SRC_IP, TTL=TTL,
                             pkt_len=60+i)
            totalPktLengths[port] += len(pkt)

            nftest_send_dma('nf' + str(port), pkt)
            nftest_expect_dma('nf' + str(port), pkt)
            time.sleep(0.1)           ## PLEASE ADD THIS LINE!
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