From: Eric Dumazet <eric.dumazet@gmail.com>
To: Jarek Poplawski <jarkao2@gmail.com>
Cc: David Miller <davem@davemloft.net>,
Changli Gao <xiaosuo@gmail.com>, netdev <netdev@vger.kernel.org>,
Patrick McHardy <kaber@trash.net>
Subject: Re: [PATCH net-next-2.6] net: force a fresh timestamp for ingress packets
Date: Thu, 16 Dec 2010 23:26:03 +0100 [thread overview]
Message-ID: <1292538363.2655.20.camel@edumazet-laptop> (raw)
In-Reply-To: <20101216220838.GB2191@del.dom.local>
Le jeudi 16 décembre 2010 à 23:08 +0100, Jarek Poplawski a écrit :
> Hmm... Do you expect more people start debugging SFQ or I missed your
> point? ;-) Maybe such a change would be reasonable on a cloned skb?
My point was to permit an admin to check his ingress shaping works or
not. In this respect, netem was a specialization of a general problem.
We had a prior discussion on timestamping skb in RX path, when RPS came
in : Should we take timestamp before RPS or after. At that time we added
a sysctl. Not sure it was the right choice :-(
I feel tcpdump (on TX side) should really display time of packet right
before being given to device, but this is probably a matter of taste.
Before commit 8caf153974f2 (net: sch_netem: Fix an inconsistency in
ingress netem timestamps.), this is what was done.
next prev parent reply other threads:[~2010-12-16 22:26 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-12-15 15:50 [PATCH net-next-2.6] net: force a fresh timestamp for ingress packets Eric Dumazet
2010-12-16 21:17 ` Jarek Poplawski
2010-12-16 21:30 ` Eric Dumazet
2010-12-16 22:08 ` Jarek Poplawski
2010-12-16 22:26 ` Eric Dumazet [this message]
2010-12-16 22:42 ` Jarek Poplawski
2010-12-16 23:31 ` Eric Dumazet
2010-12-17 7:30 ` Jarek Poplawski
2010-12-17 8:08 ` Eric Dumazet
2010-12-17 8:34 ` Jarek Poplawski
2010-12-17 8:59 ` Jarek Poplawski
2010-12-17 9:26 ` Eric Dumazet
2010-12-21 7:22 ` [PATCH net-next-2.6] net: timestamp cloned packet in dev_queue_xmit_nit Eric Dumazet
2010-12-21 7:56 ` Changli Gao
2010-12-21 18:50 ` David Miller
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