Do we ever want to bind more than 8 multicast MAC addresses?

[Ricardo Carrano]

On Fri, Apr 18, 2008 at 10:28 AM, David Woodhouse <dwmw2 at infradead.org>
wrote:

> On Thu, 2008-04-17 at 17:09 -0400, Michael Stone wrote:
> >
> > Ashish comments on #6869: Firmware release - 5.110.22.p9 as follows:
> >
> >  Currently firmware 5.110.22.p8/9 does not support more than 8 multicast
> >  mac addresses. Is there a possibility that any given point of time
> there
> >  are more than 8 multicast address required?
> >
> > Is this going to be a problem for anyone?
>
> Theoretically we go into ALLMULTI mode (and filter on the host) when we
> exceed the size of the multicast list that the device can handle. There
> shouldn't be a hard limit on the number of multicast groups that
> userspace can join; it just gets less efficient.


In this case, it seems a bad choice to compromise buffer space in exchange
of an improbable scenario (sharing more than 4 activities over a simple
mesh).


>
>
> However, we believe that size to be 32 (MRVDRV_MAX_MULTICAST_LIST_SIZE
> in defs.h).


Mmm, if the driver says it is 32 and the firmware only allows for 8, we have
a problem, don't we? ;-)


>
>
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> dwmw2
>
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