163. VLAN Ethertype Config Tests¶

163.1. Description¶

for single vlan default TPID is 0x8100. for QinQ, default S-Tag+C-Tag VLAN TPIDs 0x88A8 + 0x8100. This feature implemented configuration of VLAN ethertype TPID, such as changing single vlan TPID 0x8100 to 0xA100, or changing QinQ “0x88A8 + 0x8100” to “0x9100+0xA100” or “0x8100+0x8100”

163.2. Prerequisites¶

Hardware: one Intel® Ethernet 700 Series NIC (4x 10G or 2x10G or 2x40G or 1x10G)
Software:
- DPDK: http://dpdk.org/git/dpdk
- Scapy: http://www.secdev.org/projects/scapy/
Assuming that DUT ports 0 and 1 are connected to the tester’s port A and B.

163.3. Test Case 1: change VLAN TPID¶

Start testpmd, start in rxonly mode:

./dpdk-testpmd -c 0xff -n 4 -- -i --portmask=0x3
testpmd> set fwd rxonly
testpmd> set verbose 1
testpmd> start

Change VLAN TPIDs to 0xA100:
```
testpmd> vlan set outer tpid 0xA100 0
```
send a packet with VLAN TPIDs = 0xA100, verify it can be recognized as vlan packet.

163.4. Test Case 2: test VLAN filtering on/off¶

Start testpmd, setup vlan filter on, start in mac forwarding mode:

./dpdk-testpmd -c 0xff -n 4 -- -i --portmask=0x3
testpmd> set fwd mac
testpmd> vlan set filter on 0
testpmd> start

Due to the kernel enables Qinq and cannot be closed, the DPDK only add `extend on` to make the VLAN filter
work normally. Therefore, if the i40e firmware version >= 8.4 the DPDK can only add `extend on` to make the VLAN filter work normally:
testpmd> vlan set extend on 0

Send 1 packet with VLAN TPID 0xA100 and VLAN Tag 16 on port A, Verify that the VLAN packet cannot be received in port B.
Disable vlan filtering on port 0:
```
testpmd> vlan set filter off 0
```
Change VLAN TPIDs to 0xA100 on port 0:
```
testpmd> vlan set outer tpid 0xA100 0
```
Send 1 packet with VLAN TPID 0xA100 and VLAN Tag 16 on port A, Verify that the VLAN packet can be received in port B and TPID is 0xA100

163.5. Test Case 3: test adding VLAN Tag Identifier with changing VLAN TPID¶

start testpmd, setup vlan filter on, start in mac forwarding mode:

./dpdk-testpmd -c 0xff -n 4 -- -i --portmask=0x3
testpmd> set fwd mac
testpmd> vlan set filter on 0
testpmd> vlan set strip off 0
testpmd> start

Due to the kernel enables Qinq and cannot be closed, the DPDK only add `extend on` to make the VLAN filter
work normally. Therefore, if the i40e firmware version >= 8.4 the DPDK can only add `extend on` to make the VLAN filter work normally:
testpmd> vlan set extend on 0

Add a VLAN Tag Identifier 16 on port 0:
```
testpmd> rx_vlan add 16 0
```
Send 1 packet with the VLAN Tag 16 on port A, Verify that the VLAN packet can be received in port B and TPID is 0x8100
Change VLAN TPID to 0xA100 on port 0:
```
testpmd> vlan set outer tpid 0xA100 0
```
Send 1 packet with VLAN TPID 0xA100 and VLAN Tag 16 on port A, Verify that the VLAN packet can be received in port B and TPID is 0xA100
Remove the VLAN Tag Identifier 16 on port 0:
```
testpmd> rx_vlan rm 16 0
```
Send 1 packet with VLAN TPID 0xA100 and VLAN Tag 16 on port A, Verify that the VLAN packet cannot be received in port B.

163.6. Test Case 4: test VLAN header stripping with changing VLAN TPID¶

start testpmd, setup vlan filter off, vlan strip on, start in mac forwarding mode:

./dpdk-testpmd -c 0xff -n 4 -- -i --portmask=0x3
testpmd> set fwd mac
testpmd> vlan set filter off 0
testpmd> vlan set strip on 0
testpmd> start

Send 1 packet with the VLAN Tag 16 on port A. Verify that packet received in port B without VLAN Tag Identifier
Change VLAN TPID to 0xA100 on port 0:
```
testpmd> vlan set outer tpid 0xA100 0
```
Send 1 packet with VLAN TPID 0xA100 and VLAN Tag 16 on port A. Verify that packet received in port B without VLAN Tag Identifier
Disable vlan header stripping on port 0:
```
testpmd> vlan set strip off 0
```
Send 1 packet with VLAN TPID 0xA100 and VLAN Tag 16 on port A. Verify that packet received in port B with VLAN Tag Identifier.

163.7. Test Case 5: test VLAN header inserting with changing VLAN TPID¶

start testpmd, enable vlan packet forwarding, start in mac forwarding mode:

./dpdk-testpmd -c 0xff -n 4 -- -i --portmask=0x3
testpmd> set fwd mac
testpmd> vlan set filter off 0
testpmd> vlan set strip off 0
testpmd> start

Insert VLAN Tag Identifier 16 on port 1:
```
testpmd> tx_vlan set 1 16
```
Send 1 packet without VLAN Tag Identifier on port A. Verify that packet received in port B with VLAN Tag Identifier 16 and TPID is 0x8100
Change VLAN TPID to 0xA100 on port 1:
```
testpmd> vlan set outer tpid 0xA100 1
```
Send 1 packet without VLAN Tag Identifier on port A. Verify that packet received in port B with VLAN Tag Identifier 16 and TPID is 0xA100.
Delete the VLAN Tag Identifier 16 on port 1:
```
testpmd> tx_vlan reset 1
```
Send 1 packet without VLAN Tag Identifier on port A. Verify that packet received in port B without VLAN Tag Identifier 16.

163.8. Test Case 6: Change S-Tag and C-Tag within QinQ¶

Start testpmd, enable QinQ, start in rxonly mode:

./dpdk-testpmd -c 0xff -n 4 -- -i --portmask=0x3
testpmd> vlan set qinq on 0
testpmd> set fwd rxonly
testpmd> set verbose 1
testpmd> start

Change S-Tag+C-Tag VLAN TPIDs to 0x88A8 + 0x8100:

testpmd> vlan set outer tpid 0x88A8 0
testpmd> vlan set inner tpid 0x8100 0

Send a packet with set S-Tag+C-Tag VLAN TPIDs to 0x88A8 + 0x8100. verify it can be recognized as qinq packet.

Change S-Tag+C-Tag VLAN TPIDs to 0x9100+0xA100:

testpmd> vlan set outer tpid 0x9100 0
testpmd> vlan set inner tpid 0xA100 0

Send a packet with set S-Tag+C-Tag VLAN TPIDs to 0x9100+0xA100. verify it can be recognized as qinq packet.

Change S-Tag+C-Tag VLAN TPIDs to 0x8100+0x8100:

testpmd> vlan set outer tpid 0x8100 0
testpmd> vlan set inner tpid 0x8100 0

Send a packet with set S-Tag+C-Tag VLAN TPIDs to 0x8100+0x8100. verify it can be recognized as qinq packet.

Note:

Send packet with specific S-Tag+C-Tag VLAN TPID:

wrpcap("qinq.pcap",[Ether(dst="68:05:CA:3A:2E:58")/Dot1Q(type=0x8100,vlan=16)/Dot1Q(type=0x8100,vlan=1006)/IP(src="192.168.0.1", dst="192.168.0.2")]).
hexedit qinq.pcap; change tpid field, “ctrl+w” to save, “ctrl+x” to exit.
sendp(rdpcap(“qinq.pcap”), iface=”ens260f0”).

Send packet with specific VLAN TPID:

wrpcap("vlan.pcap",[Ether(dst="68:05:CA:3A:2E:58")/Dot1Q(type=0x8100,vlan=16)/IP(src="192.168.0.1", dst="192.168.0.2")]).
hexedit vlan.pcap; change tpid field, “ctrl+w” to save, “ctrl+x” to exit.
sendp(rdpcap(“vlan.pcap”), iface=”ens260f0”).