[dev] BGP Attribute meeting

[Donald Sharp]

Today's discussion:

`struct attr`
a) Create get/set accessor functions for every data item in the
struct.  So we can move stuff around under the covers without having
to touch a million places.
b) Create a union of data that maps data for specific safi/afi's that
allows data space to be shared for data that should never overlap
across the structure.
<Updated the slide deck to reflect this>

`struct bgp_node` to `struct route_node` w/ a `struct bgp_dest` ala
what is done in zebra.  This should reduce memory sizes by a large
amount given
full feeds.  We have a requirement that this is tested to ensure we
don't see any significant slow downs in normal day to day operations.

donald

On Fri, Mar 20, 2020 at 7:52 AM Donald Sharp <sharpd at cumulusnetworks.com> wrote:
>
> I've updated the BGP architecture slides a bit to reflect what I want
> to talk about
>
> https://docs.google.com/presentation/d/107fjFyrjNwn9ogP-yuygD71Kx3CQtoqqDOzMKHBK2xM/edit?usp=sharing
>
> If you have something you want to talk about please prepare something
> and share it
>
> donald
>
> On Tue, Mar 17, 2020 at 12:30 PM Donald Sharp
> <sharpd at cumulusnetworks.com> wrote:
> >
> > All -
> >
> > We've had some recent code get into BGP that has substantially grown
> > the `struct attr`.  We need to come up with a methodology to bring
> > this down.
> > I am proposing we have a meeting at 10am EST( 7am Pacific ) this Friday.
> >
> > If you are interested in attending this meeting please let me know and
> > I'll add you to the meeting invite.
> >
> > donald