[ovs-dev] [PATCH 0/8] datapath: Add support for latest kernel release.

[Joe Stringer]

On 18 July 2016 at 14:42, pravin shelar <pshelar at ovn.org> wrote:
> On Mon, Jul 18, 2016 at 2:32 PM, Joe Stringer <joe at ovn.org> wrote:
>> On 17 July 2016 at 19:24, Pravin B Shelar <pshelar at ovn.org> wrote:
>>> This series contains patches to advance kernel datapath
>>> support for kernel upto 4.6.
>>
>> When I try to load the kernel module on Ubuntu's kernel-4.4, I get
>> complaints about GRE:
>>
>> [  784.836361] openvswitch: Open vSwitch switching datapath 2.5.90
>> [  784.836590] openvswitch: LISP tunneling driver
>> [  784.836592] rpl_gre_cisco_register: cannot register gre_cisco
>> protocol handler
>> [  784.836593] openvswitch: rpl_ipgre_init: can't add protocol
>>
>> xenial-test ovs # uname -a
>> Linux xenial-test 4.4.0-31-generic #50-Ubuntu SMP Wed Jul 13 00:07:12
>> UTC 2016 x86_64 x86_64 x86_64 GNU/Linux
>
> Can you check if you have loaded ip_gre module?

Ah, yes it turns out it was loaded.

In the kernel module testsuite, we create linux gre devices to
communicate with OVS and do basic sanity tests for gre tunnels. When
we do "ip link add ... type gretap ...", this automatically loads
ip_gre module. These seem to successfully co-exist previously, has
this changed with this patch series or some recent kernel work?

I also note that the INSTALL.md mentions that it must not be loaded on
kernel <3.11; if this has changed, then maybe the documentation needs
updating too.