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List:       openvswitch-discuss
Subject:    [ovs-discuss] How to include new source directory in Makefile
From:       danicamps81 () gmail ! com (Dani Camps)
Date:       2014-05-24 8:08:43
Message-ID: CAD3NH5XPHdW3sNFXfNkyJ8fGvveb9Vbi6UQpjrwc4YoHjAc7ww () mail ! gmail ! com
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Hi Ben,

I assumed that openflow was implemented in the openvswitch kernel
module, therefore the EXPORT_SYMBOL approach. I understand now from
your comment that openflow is not implemented in the kernel, but
instead runs in user space in ovs-vswitchd. In that case we will have
to use netlink sockets.

Thanks for clarifying.

BR

Daniel

On Fri, May 23, 2014 at 5:09 PM, Ben Pfaff <blp at nicira.com> wrote:
> On Fri, May 23, 2014 at 11:36:17AM +0200, Dani Camps wrote:
>> We are trying to have ofproto.c calling a function defined in another
>> kernel module. For that we do EXPORT_SYMBOL() in the other module, and
>> include the corresponding header file in ofproto.c.
>
> This doesn't make any sense.  You can't call kernel functions from
> userspace or vice versa.

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