[OpenWrt-Devel] [PATCH 1/8 v3] bridge: multicast to unicast

Linus Walleij linus.walleij at linaro.org
Sun Feb 17 16:08:15 EST 2019

On Sun, Feb 17, 2019 at 7:16 PM Sasha Levin <sashal at kernel.org> wrote:
> On Thu, Feb 14, 2019 at 02:23:56PM +0100, Linus Walleij wrote:
> >From: Felix Fietkau <nbd at nbd.name>
> >
> >commit 6db6f0eae6052b70885562e1733896647ec1d807 upstream.
> >
> >Implements an optional, per bridge port flag and feature to deliver
> >multicast packets to any host on the according port via unicast
> >individually. This is done by copying the packet per host and
> >changing the multicast destination MAC to a unicast one accordingly.
> >
> >multicast-to-unicast works on top of the multicast snooping feature of
> >the bridge. Which means unicast copies are only delivered to hosts which
> >are interested in it and signalized this via IGMP/MLD reports
> >previously.
> >
> >This feature is intended for interface types which have a more reliable
> >and/or efficient way to deliver unicast packets than broadcast ones
> >(e.g. wifi).

> This looks like a new feature rather than a fix, why does it need to go
> to -stable?

Yeah :/

I'm not very good with networking stuff and it shows.

I percieved it as something else when I picked it out, now I see that
it requires a flag set on the bridge which is not gonna be done
without some other changes setting it. Let's
drop it.

Linus Walleij

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