19. Common steps for launching DCF

Generate 1 trust VF on 1 PF, and request 1 DCF on the trust VF. PF should grant DCF mode to it.

Generate 4 VFs on PF

echo 4 > /sys/bus/pci/devices/0000:18:00.0/sriov_numvfs

Set a VF as trust

ip link set enp24s0f0 vf 0 trust on
ip link set enp27s0f0 vf 0 mac D2:6B:4C:EB:1C:26

Launch dpdk on the VF, request DCF mode

./usertools/dpdk-devbind.py -b vfio-pci 18:01.0
./x86_64-native-linuxapp-gcc/app/testpmd -l 6-10 -n 4 -w 18:01.0,cap=dcf --file-prefix=vf -- -i

20. Test Case: Launch DCF and do macfwd

Execute common steps to prepare DCF test environment

Set macfwd

set fwd mac
start

Launch tcpdump to sniffer the packets from DCF

tcpdump -i enp24s0f1 -vvv -Q in

Send packets from tester(scapy) to the VF by MAC address(D2:6B:4C:EB:1C:26)

p = Ether(dst="D2:6B:4C:EB:1C:26", src="00:11:22:33:44:55")/IP(src="192.168.1.1",dst="192.168.1.3")/Raw('x'*64)
sendp(p, iface=intf, count=100)

Expect tester can get packets which loopbacked by DCF.

21. Test Case: Check default rss for L3

DCF data path support RSS packets by default. For L3 packets, input set is IP src/dst. For tunneling packets, input set is inner IP src/dst.

Execute common steps to prepare DCF test environment

Set rxonly forward mode

set fwd rxonly
set verbose 1
start

Send a series packets to check if DCF RSS is correct for IPv4

intf="enp175s0f0"
sendp(Ether(dst="D2:6B:4C:EB:1C:26", src="00:11:22:33:44:55")/IP(src="192.168.1.1", dst="192.168.1.2")/Raw('x'*64), iface=intf)
sendp(Ether(dst="D2:6B:4C:EB:1C:26", src="00:11:22:33:44:55")/IP(src="192.168.1.1", dst="192.168.1.3")/Raw('x'*64), iface=intf)
sendp(Ether(dst="D2:6B:4C:EB:1C:26", src="00:11:22:33:44:55")/IP(src="192.168.1.3", dst="192.168.1.2")/Raw('x'*64), iface=intf)
sendp(Ether(dst="D2:6B:4C:EB:1C:26", src="00:11:22:33:44:55")/IP(src="192.168.1.1", dst="192.168.1.2")/Raw('x'*64), iface=intf)

Expected: p1 hash value is not equal to p2 or p3, and should be same to p4.

Send a series packets to check if DCF RSS is correct for IPv6

sendp(Ether(dst="D2:6B:4C:EB:1C:26", src="00:11:22:33:44:55")/IPv6(src="::22", dst="::11")/Raw('x'*64), iface=intf)
sendp(Ether(dst="D2:6B:4C:EB:1C:26", src="00:11:22:33:44:55")/IPv6(src="::22", dst="::12")/Raw('x'*64), iface=intf)
sendp(Ether(dst="D2:6B:4C:EB:1C:26", src="00:11:22:33:44:55")/IPv6(src="::21", dst="::11")/Raw('x'*64), iface=intf)
sendp(Ether(dst="D2:6B:4C:EB:1C:26", src="00:11:22:33:44:55")/IPv6(src="::22", dst="::11")/Raw('x'*64), iface=intf)

Expected: p1 hash value is not equal to p2 or p3, and should be same to p4.

Send a series packets to check if DCF RSS is correct for tunnelling packet (inner IPv4)

sendp(Ether(dst="D2:6B:4C:EB:1C:26", src="00:11:22:33:44:55")/IP(src="1.1.1.1", dst="2.2.2.2")/GRE()/IP(src="192.168.1.1", dst="192.168.1.2")/Raw('x'*64), iface=intf)
sendp(Ether(dst="D2:6B:4C:EB:1C:26", src="00:11:22:33:44:55")/IP(src="1.1.1.1", dst="2.2.2.2")/GRE()/IP(src="192.168.1.1", dst="192.168.1.3")/Raw('x'*64), iface=intf)
sendp(Ether(dst="D2:6B:4C:EB:1C:26", src="00:11:22:33:44:55")/IP(src="1.1.1.1", dst="2.2.2.2")/GRE()/IP(src="192.168.1.3", dst="192.168.1.2")/Raw('x'*64), iface=intf)
sendp(Ether(dst="D2:6B:4C:EB:1C:26", src="11:22:33:44:55:77")/IP(src="1.1.1.2", dst="2.2.2.1")/GRE()/IP(src="192.168.1.1", dst="192.168.1.2")/Raw('x'*64), iface=intf)
sendp(Ether(dst="D2:6B:4C:EB:1C:26", src="11:22:33:44:55:77")/IPv6(src="::11", dst="::22")/GRE()/IP(src="192.168.1.1", dst="192.168.1.2")/Raw('x'*64), iface=intf)

Expected: p1 hash value is not equal to p2 or p3. p1 hash value is equal to p4 and p5.

Send a series packets to check if DCF RSS is correct for tunnelling packet (inner IPv6)

sendp(Ether(dst="D2:6B:4C:EB:1C:26", src="00:11:22:33:44:55")/IP(src="1.1.1.1", dst="2.2.2.2")/GRE()/IPv6(src="::22", dst="::11")/Raw('x'*64), iface=intf)
sendp(Ether(dst="D2:6B:4C:EB:1C:26", src="00:11:22:33:44:55")/IP(src="1.1.1.1", dst="2.2.2.2")/GRE()/IPv6(src="::22", dst="::12")/Raw('x'*64), iface=intf)
sendp(Ether(dst="D2:6B:4C:EB:1C:26", src="00:11:22:33:44:55")/IP(src="1.1.1.1", dst="2.2.2.2")/GRE()/IPv6(src="::21", dst="::11")/Raw('x'*64), iface=intf)
sendp(Ether(dst="D2:6B:4C:EB:1C:26", src="11:22:33:44:55:77")/IP(src="1.1.1.2", dst="2.2.2.1")/GRE()/IPv6(src="::22", dst="::11")/Raw('x'*64), iface=intf)
sendp(Ether(dst="D2:6B:4C:EB:1C:26", src="11:22:33:44:55:77")/IPv6(src="::33", dst="::44")/GRE()/IPv6(src="::22", dst="::11")/Raw('x'*64), iface=intf)

Expected: p1 hash value is not equal to p2 or p3. p1 hash value is equal to p4 and p5.

22. Test Case: Check default rss for L4

DCF data path support RSS packets by default. For L3 packets, input set is IP src/dst. For tunneling packets, input set is inner IP src/dst.

Execute common steps to prepare DCF test environment

Set rxonly forward mode

set fwd rxonly
set verbose 1
start

Send a series packets to check if DCF RSS is correct for IPv4

sendp(Ether(dst="D2:6B:4C:EB:1C:26", src="00:11:22:33:44:55")/IP(src="192.168.1.1", dst="192.168.1.2")/UDP(sport=1234, dport=5678)/Raw('x'*64), iface=intf)
sendp(Ether(dst="D2:6B:4C:EB:1C:26", src="00:11:22:33:44:55")/IP(src="192.168.1.1", dst="192.168.1.3")/UDP(sport=1234, dport=5678)/Raw('x'*64), iface=intf)
sendp(Ether(dst="D2:6B:4C:EB:1C:26", src="00:11:22:33:44:55")/IP(src="192.168.1.3", dst="192.168.1.2")/UDP(sport=1234, dport=5678)/Raw('x'*64), iface=intf)
sendp(Ether(dst="D2:6B:4C:EB:1C:26", src="00:11:22:33:44:55")/IP(src="192.168.1.1", dst="192.168.1.2")/UDP(sport=1235, dport=5678)/Raw('x'*64), iface=intf)
sendp(Ether(dst="D2:6B:4C:EB:1C:26", src="00:11:22:33:44:55")/IP(src="192.168.1.1", dst="192.168.1.2")/UDP(sport=1234, dport=5679)/Raw('x'*64), iface=intf)
sendp(Ether(dst="D2:6B:4C:EB:1C:26", src="00:22:33:44:55:77")/IP(src="192.168.1.1", dst="192.168.1.2")/TCP(sport=1234, dport=5678)/Raw('x'*64), iface=intf)

Expected: p1 hash value is not equal to p2 or p3 or p4 or p5, and should be equal to p6.

Send a series packets to check if DCF RSS is correct for IPv6

sendp(Ether(dst="D2:6B:4C:EB:1C:26", src="00:11:22:33:44:55")/IPv6(src="::22", dst="::11")/UDP(sport=1234, dport=5678)/Raw('x'*64), iface=intf)
sendp(Ether(dst="D2:6B:4C:EB:1C:26", src="00:11:22:33:44:55")/IPv6(src="::22", dst="::12")/UDP(sport=1234, dport=5678)/Raw('x'*64), iface=intf)
sendp(Ether(dst="D2:6B:4C:EB:1C:26", src="00:11:22:33:44:55")/IPv6(src="::21", dst="::11")/UDP(sport=1234, dport=5678)/Raw('x'*64), iface=intf)
sendp(Ether(dst="D2:6B:4C:EB:1C:26", src="00:11:22:33:44:55")/IPv6(src="::22", dst="::11")/UDP(sport=1235, dport=5678)/Raw('x'*64), iface=intf)
sendp(Ether(dst="D2:6B:4C:EB:1C:26", src="00:11:22:33:44:55")/IPv6(src="::22", dst="::11")/UDP(sport=1234, dport=5679)/Raw('x'*64), iface=intf)
sendp(Ether(dst="D2:6B:4C:EB:1C:26", src="11:22:33:44:55:77")/IPv6(src="::22", dst="::11")/TCP(sport=1234, dport=5678)/Raw('x'*64), iface=intf)

Expected: p1 hash value is not equal to p2 or p3 or p4 or p5, and should be equal to p6.

Send a series packets to check if DCF RSS is correct for tunnelling packet (inner IPv4)

sendp(Ether(dst="D2:6B:4C:EB:1C:26", src="00:11:22:33:44:55")/IP(src="1.1.1.1", dst="2.2.2.2")/GRE()/IP(src="192.168.1.1", dst="192.168.1.2")/UDP(sport=1234, dport=5678)/Raw('x'*64), iface=intf)
sendp(Ether(dst="D2:6B:4C:EB:1C:26", src="00:11:22:33:44:55")/IP(src="1.1.1.1", dst="2.2.2.2")/GRE()/IP(src="192.168.1.1", dst="192.168.1.3")/UDP(sport=1234, dport=5678)/Raw('x'*64), iface=intf)
sendp(Ether(dst="D2:6B:4C:EB:1C:26", src="00:11:22:33:44:55")/IP(src="1.1.1.1", dst="2.2.2.2")/GRE()/IP(src="192.168.1.3", dst="192.168.1.2")/UDP(sport=1234, dport=5678)/Raw('x'*64), iface=intf)
sendp(Ether(dst="D2:6B:4C:EB:1C:26", src="00:11:22:33:44:55")/IP(src="1.1.1.1", dst="2.2.2.2")/GRE()/IP(src="192.168.1.1", dst="192.168.1.2")/UDP(sport=1235, dport=5678)/Raw('x'*64), iface=intf)
sendp(Ether(dst="D2:6B:4C:EB:1C:26", src="00:11:22:33:44:55")/IP(src="1.1.1.1", dst="2.2.2.2")/GRE()/IP(src="192.168.1.1", dst="192.168.1.2")/UDP(sport=1234, dport=5679)/Raw('x'*64), iface=intf)
sendp(Ether(dst="D2:6B:4C:EB:1C:26", src="00:22:33:44:55:77")/IP(src="1.1.1.2", dst="2.2.2.1")/GRE()/IP(src="192.168.1.1", dst="192.168.1.2")/UDP(sport=1234, dport=5678)/Raw('x'*64), iface=intf)
sendp(Ether(dst="D2:6B:4C:EB:1C:26", src="00:22:33:44:55:77")/IPv6(src="::11", dst="::22")/GRE()/IP(src="192.168.1.1", dst="192.168.1.2")/TCP(sport=1234, dport=5678)/Raw('x'*64), iface=intf)

Expected: p1 hash value is not equal to p2 or p3 or p4 or p5, and should be equal to p6 and p7.

Send a series packets to check if DCF RSS is correct for tunnelling packet (inner IPv6)

sendp(Ether(dst="D2:6B:4C:EB:1C:26", src="00:11:22:33:44:55")/IP(src="1.1.1.1", dst="2.2.2.2")/GRE()/IPv6(src="::22", dst="::11")/UDP(sport=1234, dport=5678)/Raw('x'*64), iface=intf)
sendp(Ether(dst="D2:6B:4C:EB:1C:26", src="00:11:22:33:44:55")/IP(src="1.1.1.1", dst="2.2.2.2")/GRE()/IPv6(src="::22", dst="::12")/UDP(sport=1234, dport=5678)/Raw('x'*64), iface=intf)
sendp(Ether(dst="D2:6B:4C:EB:1C:26", src="00:11:22:33:44:55")/IP(src="1.1.1.1", dst="2.2.2.2")/GRE()/IPv6(src="::21", dst="::11")/UDP(sport=1234, dport=5678)/Raw('x'*64), iface=intf)
sendp(Ether(dst="D2:6B:4C:EB:1C:26", src="00:11:22:33:44:55")/IP(src="1.1.1.1", dst="2.2.2.2")/GRE()/IPv6(src="::22", dst="::11")/UDP(sport=1235, dport=5678)/Raw('x'*64), iface=intf)
sendp(Ether(dst="D2:6B:4C:EB:1C:26", src="00:11:22:33:44:55")/IP(src="1.1.1.1", dst="2.2.2.2")/GRE()/IPv6(src="::22", dst="::11")/UDP(sport=1234, dport=5679)/Raw('x'*64), iface=intf)
sendp(Ether(dst="D2:6B:4C:EB:1C:26", src="00:22:33:44:55:77")/IP(src="1.1.1.2", dst="2.2.2.1")/GRE()/IPv6(src="::22", dst="::11")/UDP(sport=1234, dport=5678)/Raw('x'*64), iface=intf)
sendp(Ether(dst="D2:6B:4C:EB:1C:26", src="00:22:33:44:55:77")/IPv6(src="::33", dst="::44")/GRE()/IPv6(src="::22", dst="::11")/UDP(sport=1234, dport=5678)/Raw('x'*64), iface=intf)

Expected: p1 hash value is not equal to p2 or p3 or p4 or p5, and should be equal to p6 and p7.

23. Test Case: Create rule with to original VF action

DCF data path support RSS packets by default. For L3 packets, input set is IP src/dst. For tunneling packets, input set is inner IP src/dst.

Execute common steps to prepare DCF test environment

Set rxonly forward mode

set fwd rxonly
set verbose 1
start

Send a packet, check the DCF can’t recieve the packet (Dest mac address is not DCF’s mac)

sendp([Ether(dst="68:05:ca:8d:ed:a8")/IPv6(src="CDCD:910A:2222:5498:8475:1111:3900:1518", dst="CDCD:910A:2222:5498:8475:1111:3900:2020",tc=3)/TCP(sport=25,dport=23)/("X"*480)], iface=intf, count=1)

Create a rule to DCF

flow create 0 ingress pattern eth dst is 68:05:ca:8d:ed:a8 / ipv6 dst is CDCD:910A:2222:5498:8475:1111:3900:2020 tc is 3 / tcp src is 25 dst is 23 / end actions vf original 1 / end

Send the packet again, check DCF can recieve the packet

sendp([Ether(dst="68:05:ca:8d:ed:a8")/IPv6(src="CDCD:910A:2222:5498:8475:1111:3900:1518", dst="CDCD:910A:2222:5498:8475:1111:3900:2020",tc=3)/TCP(sport=25,dport=23)/("X"*480)], iface=intf, count=1)

Destory the rule on DCF

flow destroy 0 rule 0

Send the packet agiain, check DCF can’t recieve the packet

sendp([Ether(dst="68:05:ca:8d:ed:a8")/IPv6(src="CDCD:910A:2222:5498:8475:1111:3900:1518", dst="CDCD:910A:2222:5498:8475:1111:3900:2020",tc=3)/TCP(sport=25,dport=23)/("X"*480)], iface=intf, count=1)

24. Test Case: Measure performance of DCF interface

The steps are same to iAVF performance test, a slight difference on launching testpmd devarg. DCF need cap=dcf option. Expect the performance is same to iAVF