On 8/18/16 8:37 AM, Alexander Duyck wrote: > Thought I would go through and do a second pass since it sounds like > the inner_mac_header idea isn't going to fly. If we can't push this > as an L2 encapsulation there are few tweaks we probably need in order > to make this work as an L3. I have included comments inline below. > > Also I haven't worked with MPLS much before. Is there a simple way to > setup an MPLS tunnel between two hosts connected back to back so that > I could try testing a few things related to this patch?
Here commands that I use for VMs - copy and paste. It is an adaptation of Lennert's namespace script. VM id's are local to my host. Network addresses are 10.100.1.x/24 and 2100:1::x/120 on eth1 of the respective node. Includes MPLS encap, IP-IP encap and none to compare performances. VM2 === modprobe mpls_router modprobe mpls_gso modprobe mpls_iptunnel sysctl -w net.mpls.platform_labels=1000 ip route add 10.10.10.10/32 encap mpls 100 via inet 10.100.1.3 ip -6 route add 3000:1::1/128 encap mpls 101 via inet6 2100:1::3 ip tunnel add tun0 mode ipip remote 10.100.1.3 ip link set dev tun0 up ip route add 10.10.10.11/32 dev tun0 ip route add 10.10.10.12/32 via inet 10.100.1.3 ip -6 route add 3000:1::3/128 via inet6 2100:1::3 VM3 === modprobe mpls_router modprobe mpls_gso modprobe mpls_iptunnel sysctl -w net.mpls.conf.eth1.input=1 sysctl -w net.mpls.platform_labels=1000 ip -f mpls route add 100 via inet 10.100.2.4 ip -f mpls route add 101 via inet6 2100:2::4 ip tunnel add tun0 mode ipip remote 10.100.1.2 ip link set dev tun0 up ip ro add 10.10.10.11/32 via 10.100.2.4 ip ro add 10.10.10.12/32 via 10.100.2.4 ip -6 route add 3000:1::3/128 via inet6 2100:2::4 VM4 === ip addr add 10.10.10.10/32 dev lo ip addr add 10.10.10.11/32 dev lo ip addr add 10.10.10.12/32 dev lo ip -6 addr add 3000:1::1/128 dev lo ip -6 addr add 3000:1::2/128 dev lo ip -6 addr add 3000:1::3/128 dev lo netserver Go back to VM2: ping -c 1 10.10.10.10 ping -c 1 10.10.10.11 ping -c 1 10.10.10.12 netperf -c -C -H 10.10.10.10 -l 10 -t TCP_STREAM netperf -c -C -H 10.10.10.11 -l 10 -t TCP_STREAM netperf -c -C -H 10.10.10.12 -l 10 -t TCP_STREAM I'll take a look at your other comments today.
