Re: [net-next PATCH v2 0/3] Broadcast/Multicast rate limit via Ethtool Coalesce

From: David Miller
Date: Wed Jul 09 2014 - 19:44:27 EST

From: Mugunthan V N <mugunthanvnm@xxxxxx>
Date: Wed, 9 Jul 2014 12:44:07 +0530

> A system/cpu can be loaded by a hacker with flooding of broadcast or
> multicast packets, to prevent this some Ethernet controllers like CPSW
> provide a mechanism to limit the broadcast/multicast packet rate via
> hardware limiters. This patch series enables this feature via
> Ethtool Coalesce.

This is pretty bogus if you ask me.

What is the difference from accepting a high rate of unicast packets?
I say it is no different.

Therefore, this feature makes no sense to me at all.
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