netdev - Re: HW accelerated support for setting skb->pkt

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Message-ID: <1387421802.19078.345.camel@edumazet-glaptop2.roam.corp.google.com>
Date:	Wed, 18 Dec 2013 18:56:42 -0800
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Florian Fainelli <f.fainelli@...il.com>
Cc:	netdev <netdev@...r.kernel.org>, David Miller <davem@...emloft.net>
Subject: Re: HW accelerated support for setting skb->pkt_type?

On Wed, 2013-12-18 at 18:29 -0800, Florian Fainelli wrote:
> Hi all,
> 
> I work with two Ethernet controllers which can tell on a per-packet
> basis whether this is a broadcast, unicast or multicast, eventually
> allowing me to bypass the initial checks done in eth_type_trans().
> 
> Is there any other hardware out there which supports that, and is
> there any interest in optimizing that operation?

Other hardware have this as well, but I doubt it makes any difference,
unless you have an arch with a 16 bytes cache line.

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