Subject: Re: hme, IFF_SIMPLEX
To: Martin Husemann <firstname.lastname@example.org>
From: None <email@example.com>
Date: 08/30/2002 09:00:13
>> isn't it better to make it to always behave as IFF_SIMPLEX, by
>> dropping multicast packet from itself? see smc91cxx.c.
>I'm not sure. It would add an ether_cmp() to a criticial path, but unlike
>the smc91cxx.c case not only in promiscuous mode. Maybe it should only check
>that if we are in half-duplex mode?
>But on the other hand, the current solution does not cause any performance
>hit and works - what's the problem with it?
the problem is that !IFF_SIMPLEX interfaces are not really supported in
L3 logic. we need to look at that (IPv4/v6 multicast, IPv6 ND, and
such). i don't think i can make IPv6 DAD work with !IFF_SIMPLEX
interfaces, due to the way IPv6 DAD is specified.