netdev - Re: [PATCH net-next] ipv4,ipv6: send arp/ndisc packets with TC_PRIO

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Message-ID: <20130815035649.GG13066@order.stressinduktion.org>
Date:	Thu, 15 Aug 2013 05:56:49 +0200
From:	Hannes Frederic Sowa <hannes@...essinduktion.org>
To:	netdev@...r.kernel.org, bcrl@...ck.org
Cc:	dave.taht@...il.com
Subject: Re: [PATCH net-next] ipv4,ipv6: send arp/ndisc packets with TC_PRIO_CONTROL

On Thu, Aug 15, 2013 at 01:34:12AM +0200, Hannes Frederic Sowa wrote:
> We already did this change for igmp/mld packets in commit
> 9d4a0314642918cbda9ed4012df51e8df608fce6 ("ipv4, ipv6: send igmpv3/mld
> packets with TC_PRIO_CONTROL").
> 
> arp and ndisc are as important as mld/igmp for a working network, so
> make the appropriate change here, too.
> 
> Cc: Benjamin LaHaise <bcrl@...ck.org>
> Signed-off-by: Hannes Frederic Sowa <hannes@...essinduktion.org>

I would like to downgrade this patch from tag net-next to RFC.

After Dave Taht talked to me, I realized that this change could have drastic
impact on how packets could starve in various qdiscs if a router is last hop
for a ping scan.

Please postpone this patch until I did more research. Comments are welcome,
too.

Thanks,

  Hannes

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