What I'm doing is connecting two docker containers using OVS-DPDK to test throughput between then (using sockperf or iperf3). For this, I've been suggested to use TAP interfaces.
What is expected is that container A passes/receives traffic from TAP0 and container B sends/receives traffic from the TAP1 interface. TAP0 must send traffic to TAP1 over userspace OVS-DPDK and vise versa.
But unfortunately, I can't get the traffic to go to the TAP interfaces.
Here is what I'm doing (based on this answer):
On the host OS:
sudo ./utilities/ovs-vsctl add-br br0 -- set bridge br0 datapath_type=netdev
sudo ./utilities/ovs-vsctl add-port br0 myeth0 -- set Interface myeth0 type=dpdk options:dpdk-devargs=net_tap0,iface=tap0
sudo ./utilities/ovs-vsctl add-port br0 myeth1 -- set Interface myeth1 type=dpdk options:dpdk-devargs=net_tap1,iface=tap1
sudo ./utilities/ovs-ofctl add-flow br0 in_port=1,action=output:2
sudo ./utilities/ovs-ofctl add-flow br0 in_port=2,action=output:1
It creates two TAP interfaces (shown in ifconfig) and two OVS-DPDK ports (myeth0 and myeth1)
Then I assign IP to the TAP interfaces:
sudo ip addr add 173.17.0.1/24 dev tap0
sudo ip addr add 173.17.1.1/24 dev tap1
sudo ip link set tap0 up
sudo ip link set tap1 up
And then run the docker containers:
docker run -it --rm --name=server -p 5201:5201 --entrypoint /bin/bash "networkstatic/iperf3"
docker run -it --rm --name=client --entrypoint /bin/bash "networkstatic/iperf3"
The traffic goes through docker created venth interfaces and nothing goes through TAP interfaces (As I check in ifconfig).
What is the correct way to connect two containers using OVS-DPDK and TAP interface in Linux?
EDIT:
Output of ifconfig:
tap0: flags=4931<UP,BROADCAST,RUNNING,PROMISC,ALLMULTI,MULTICAST> mtu 1500
inet6 fe80::3847:cbff:fe27:3c2e prefixlen 64 scopeid 0x20<link>
ether 3a:47:cb:27:3c:2e txqueuelen 1000 (Ethernet)
RX packets 16 bytes 2447 (2.4 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 29 bytes 3545 (3.5 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
tap1: flags=4931<UP,BROADCAST,RUNNING,PROMISC,ALLMULTI,MULTICAST> mtu 1500
inet6 fe80::2835:bcff:fe4c:4f0e prefixlen 64 scopeid 0x20<link>
ether 2a:35:bc:4c:4f:0e txqueuelen 1000 (Ethernet)
RX packets 12 bytes 1203 (1.2 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 16 bytes 2447 (2.4 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
veth8f1f04e: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet6 fe80::50bf:f2ff:fed9:e03b prefixlen 64 scopeid 0x20<link>
ether 52:bf:f2:d9:e0:3b txqueuelen 0 (Ethernet)
RX packets 2047606 bytes 135148094 (135.1 MB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 2717619 bytes 119774365333 (119.7 GB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
vethb6e1780: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet6 fe80::382b:e0ff:fe8f:afa0 prefixlen 64 scopeid 0x20<link>
ether 3a:2b:e0:8f:af:a0 txqueuelen 0 (Ethernet)
RX packets 2717563 bytes 119774357789 (119.7 GB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 2047637 bytes 135151896 (135.1 MB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
