Sync with userspace instead of kernel

[Cody Doucette]

Hi Senthil,

Yes, please feel free to test this out. Here is our usage of this feature
on the application side:

https://github.com/AltraMayor/gatekeeper/blob/master/cps/rd.c

Our use case is that we are running a network application (DoS mitigation)
using DPDK. As you may know, DPDK takes ownership of the NIC, so the kernel
networking stack (including the routing table) is not available for use.
Instead, we maintain our own routing table in the DPDK application and
interact with bird directly.

I would also like to see it in bird, but don't have the time at the moment
to propose it. If you (or anyone else) wants to take ownership of this
feature and submit these patches, please do so!

Best,
Cody

On Mon, Sep 6, 2021 at 1:53 AM Senthil Kumar Nagappan <sknagappan at yahoo.com>
wrote:

> Hi Cody,
>
> Thanks for pointing to the changes. Looks like, its are not there in the
> mainline yet and wish to see this support in the mainline soon. Will try
> out your changes and update this thread.
>
> Thanks and Regards,
> Senthil
>
> On Monday, September 6, 2021, 02:39:23 AM GMT+5:30, Cody Doucette <
> doucette at bu.edu> wrote:
>
>
> Hi,
>
> I was able to achieve this with a few small custom changes to bird:
>
> https://github.com/cjdoucette/bird/commits/gatekeeper
>
> I don’t know if this ability has been added to the bird mainline since I
> did this.
>
> Hope that helps,
> Cody
>
> On Sat, Sep 4, 2021 at 9:59 PM Senthil Kumar Nagappan <
> sknagappan at yahoo.com> wrote:
>
> Hi,
>
> I see the enclosed thread in this topic, just wanted to know in the latest
> bird version do we have any support to sync the bird route table to another
> user space process. If not, please suggest best possible ways to achieve
> the same. Preferably with no change or very minimal changes to the bird
> code.
>
> 'Re: Sync with userspace instead of kernel' - MARC
>
> Thanks and Regards,
> Senthil
>
>
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