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Re: Multicast support with Linux Ethernet drivers
From: |
Richard Braun |
Subject: |
Re: Multicast support with Linux Ethernet drivers |
Date: |
Wed, 22 Feb 2006 19:27:24 +0100 |
Le mercredi 22 février 2006 à 18:42 +0100, Samuel Thibault a écrit :
> IIRC, multicast support at driver level is quite crappy :)
>
> Boards are usually able to subscribe to a few multicast groups only, if
> more are needed, then promiscuous mode is needed.
I don't think the notion of multicast group is relevant here. There are,
however, multicast filters that can be written to the NICs, up to a
fixed limit, and once there are too many filters, the driver sets
promiscuous mode. Should those filters be setup at driver init to accept
multicast, or only when a userland application requests it (as it
proposed in Gianluca Guida's message) ?
--
Richard Braun
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