From: Andi Kleen <ak@suse.de>
To: David Miller <davem@davemloft.net>
Cc: herbert@gondor.apana.org.au, kazunori@miyazawa.org,
yoshfuji@linux-ipv6.org, netdev@vger.kernel.org,
usagi-core@linux-ipv6.org
Subject: Re: Regarding offloading IPv6 addrconf and ndisc
Date: Tue, 1 Aug 2006 02:31:58 +0200 [thread overview]
Message-ID: <200608010231.58339.ak@suse.de> (raw)
In-Reply-To: <20060727.183415.104032934.davem@davemloft.net>
> If we process these in sequence in software interrupt, everything
> is fine. Processing of "A" will add the address, and the test
> ping packet "B" will respond properly.
>
> If you defer "A", everything breaks and the test packet "B" will
> get processed first and not work.
Playing devil's advocate here: if the packets are processed on
two different CPUs then this could also happen and break the test
case.
So the test is probably a bit fragile.
Currently it is unlikely to happen because of interrupt affinity for a
single device, but in future with MSI-X support it might not.
I generally agree it's better to keep this in kernel though.
-Andi
next prev parent reply other threads:[~2006-08-01 0:32 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-07-27 11:25 Regarding offloading IPv6 addrconf and ndisc Hugo Santos
2006-07-27 12:25 ` Kazunori Miyazawa
2006-07-27 17:56 ` Hugo Santos
2006-07-27 23:56 ` Herbert Xu
2006-07-28 1:34 ` David Miller
2006-07-28 1:45 ` Hugo Santos
2006-07-28 2:27 ` David Miller
2006-07-28 3:13 ` Hugo Santos
2006-07-28 3:20 ` David Miller
2006-07-28 3:31 ` Hugo Santos
2006-07-28 4:07 ` Stephen Hemminger
2006-07-28 8:34 ` Hugo Santos
2006-07-28 12:45 ` Jamal Hadi Salim
2006-07-29 13:34 ` Hugo Santos
2006-07-30 3:28 ` Kazunori Miyazawa
2006-07-30 11:30 ` Hugo Santos
2006-07-31 21:23 ` David Miller
2006-08-01 11:50 ` Hugo Santos
2006-08-01 21:54 ` David Miller
2006-08-01 0:16 ` Kazunori Miyazawa
2006-07-28 2:22 ` Herbert Xu
2006-07-28 2:33 ` David Miller
2006-08-01 0:31 ` Andi Kleen [this message]
2006-08-01 0:46 ` David Miller
2006-08-01 0:49 ` Roland Dreier
2006-08-01 1:24 ` Jamal Hadi Salim
2006-08-01 1:30 ` Herbert Xu
2006-08-01 1:47 ` Jamal Hadi Salim
2006-08-01 12:13 ` Hugo Santos
2006-08-01 12:00 ` Hugo Santos
2006-08-01 21:57 ` David Miller
2006-08-03 13:28 ` Ingo Oeser
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