On 6/5/2019 9:04 PM, Gregory Rose wrote: > > > On 6/5/2019 10:31 AM, Eli Britstein wrote: >> On 6/5/2019 8:11 PM, Gregory Rose wrote: >>> >>> On 6/4/2019 8:13 AM, Eli Britstein wrote: >>>> Hello, >>>> >>>> I would like to configure a GRE tunnel over IPv6, on a Linux system. >>> Which Linux system? Distro, kernel version, etc? >> Fedora 28. >> >> Kernel upstream, currently 5.2-rc2. >> >> My commands are the same as yours. I tried with local_ip and without, >> but it doesn't matter. >> >> I think the kernel doesn't have the OVS_VPORT_TYPE_IP6GRE supported. I >> saw it only in OVS tree, in datapath/linux/compat/ip6_gre.c, but I don't >> know how to compile this one and install. I tried with --with-linux and >> --with-linux-source, but it says it is supported only up to 4.20.x. I >> compiled against 4.16, but only the openvswitch.ko was compiled (and >> successfully loaded), but not ip6_gre.ko. >> >> Any ideas? > > Yes, I see the problem. The out of tree driver support for ip6 gre > ends at Linux kernel version > 4.11. After that the Linux kernel in-tree drivers would be used and > apparently they're not working > correctly for upstream kernel 4.16 or 5.2. And as you can see, even > for 4.16 the out of tree OVS kernel > drivers would still try to use the built-in Linux kernel tunnels > rather than our vport ip6gre tunnel.
Were is that decision taken? the only place I saw with KERNEL_VERSION is this, but I don't think this is it. datapath/linux/compat/include/net/netfilter/ipv6/nf_defrag_ipv6.h:15:#if LINUX_VERSION_CODE < KERNEL_VERSION(4,11,0) Though I would really want it to work on upstream kernel, I gave it a try, but it didn't work either: Installed Fedora 24, with kernel 4.5.5. # ovs-vsctl add-port br1 gre6 -- set interface gre6 type=ip6gre options:key=55 options:remote_ip=2001:db8:0:f102::f0 ovs-vsctl: Error detected while setting up 'gre6': could not add network device gre6 to ofproto (Address family not supported by protocol). See ovs-vswitchd log for details. ovs-vsctl: The default log directory is "/var/log/openvswitch". # uname -a Linux dev-r-vrt-214-011.mtr.labs.mlnx 4.5.5-300.fc24.x86_64 #1 SMP Thu May 19 13:05:32 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux > > So you are correct in that the 4.16 and 5.2 kernels do not have > OVS_VPORT_TYPE_IP6GRE support. You > can use the user space OVS tunnels instead or you can create a native > Linux ip6gre tunnel using the 'ip' > command and then add that port to your OVS bridge. I see. However, if I understand this correctly, the ip6gretap device I create using "ip" is not "external" (collect metadata), and would not behave as a ip6gre device for OVS. I wanted to have that setup working in order to apply and test similar commit as the below to IPv6 setup, to enable offloads. 5e63eaa969a3 netdev-vport: Make gre netdev type to use TC rules I still don't understand what should be integrated into the Linux kernel tree, and how. Could you please advise? Thanks, Eli > > Thanks, > > - Greg > >> >>> Thanks, >>> >>> - Greg >>> >>>> However, I encounter the following: >>>> >>>> My command: >>>> ovs-vsctl add-port br1 gre6 -- set interface gre6 type=ip6gre >>>> options:remote_ip= 2001:db8:0:f102::11 options:key=55 >>>> >>>> Output: >>>> ovs-vsctl: Error detected while setting up 'gre6': could not add >>>> network >>>> device gre6 to ofproto (Address family not supported by protocol). >>>> See >>>> ovs-vswitchd log for details. >>>> ovs-vsctl: The default log directory is "/var/log/openvswitch". >>>> >>>> In the log: >>>> bridge|WARN|could not add network device gre6 to ofproto (Address >>>> family >>>> not supported by protocol) >>>> >>>> I notice that if I want to define a ip6gretap with “ip link”, there >>>> is a >>>> need to use “-6” option, to set the correct family. >>>> >>>> Is there a way to note the correct family (though I think should be >>>> implicit by “ip6gre”)? Or maybe some other configuration? >>>> >>>> Thanks, >>>> Eli >>>> >>>> _______________________________________________ >>>> discuss mailing list >>>> disc...@openvswitch.org >>>> https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fmail.openvswitch.org%2Fmailman%2Flistinfo%2Fovs-discuss&data=02%7C01%7Celibr%40mellanox.com%7C8b78909daa4243c57fa608d6e9e04624%7Ca652971c7d2e4d9ba6a4d149256f461b%7C0%7C0%7C636953546792070660&sdata=gIl3a4JFXoIvLjZ1MQPn4irIgQHYoGvcaVrYXxxYl2E%3D&reserved=0 >>>> >>>> >>>> > _______________________________________________ discuss mailing list disc...@openvswitch.org https://mail.openvswitch.org/mailman/listinfo/ovs-discuss