netdev - Re: [net-next 09/14] igb: Report L4 Rx hash via skb->l4

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Date:	Thu, 17 Jan 2013 09:14:49 -0800
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Alexander Duyck <alexander.h.duyck@...el.com>
Cc:	Jeff Kirsher <jeffrey.t.kirsher@...el.com>, davem@...emloft.net,
	netdev@...r.kernel.org, gospo@...hat.com, sassmann@...hat.com
Subject: Re: [net-next 09/14] igb: Report L4 Rx hash via skb->l4_rxhash

On Thu, 2013-01-17 at 09:07 -0800, Alexander Duyck wrote:

> Isn't the same true of TCP?  I believe STT is intended to run over the
> TCP protocol, or am I getting ahead of myself since STT is not supported
> by the kernel?
> 

probably ;)

> > Also, is IGB really using the ports in the rss for UDP packets ?
> 
> Not by default.  The default is to only hash on the IP header for UDP
> packets.
> 
> As such the default would only be setting the l4_rxhash on TCP frames
> only.  The user would have to specifically request L4 port hashing for
> UDP via the "ethtool -N" command for configuring rx-flow-hash.

So you should rewrite this patch ?

Or have I missed something ?


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