From: Thomas Graf <tgraf@suug.ch>
To: Jesse Gross <jesse@nicira.com>
Cc: "Michael S. Tsirkin" <mst@redhat.com>,
"Du, Fan" <fan.du@intel.com>, Jason Wang <jasowang@redhat.com>,
"netdev@vger.kernel.org" <netdev@vger.kernel.org>,
"davem@davemloft.net" <davem@davemloft.net>,
"fw@strlen.de" <fw@strlen.de>,
"dev@openvswitch.org" <dev@openvswitch.org>,
Pravin Shelar <pshelar@nicira.com>
Subject: Re: [PATCH net] gso: do GSO for local skb with size bigger than MTU
Date: Thu, 4 Dec 2014 01:15:15 +0000 [thread overview]
Message-ID: <20141204011515.GA15666@casper.infradead.org> (raw)
In-Reply-To: <CAEP_g=-y_-=r+BHk3VfzxMNwH=B-26DvQrzQ7gkKG8fDG7Mx3g@mail.gmail.com>
On 12/03/14 at 04:54pm, Jesse Gross wrote:
> I don't think that we actually need a bit. I would expect that ICMP
> generation to be coupled with routing (although this requires being
> able to know what the ultimate MTU is at the time of routing the inner
> packet). If that's the case, you just need to steer between L2 and L3
> processing in the same way that you would today and ICMP would just
> come in the right cases.
I think the MTU awareness is solveable but how do you steer between
L2 and L3? How do you differentiate between an L3 ACL rule in L2 mode
and an actual L3 based forward? dec_ttl? This is what drove me to
the user controlled bit and it became appealing as it allows to
enable/disable PMTU per guest or even per flow/route.
next prev parent reply other threads:[~2014-12-04 1:15 UTC|newest]
Thread overview: 57+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-11-28 6:33 [PATCH net] gso: do GSO for local skb with size bigger than MTU Fan Du
2014-11-28 7:02 ` Jason Wang
2014-11-30 10:08 ` Du, Fan
2014-12-01 13:52 ` Thomas Graf
[not found] ` <20141201135225.GA16814-FZi0V3Vbi30CUdFEqe4BF2D2FQJk+8+b@public.gmane.org>
2014-12-01 15:06 ` Michael S. Tsirkin
2014-12-02 15:48 ` Flavio Leitner
2014-12-02 17:09 ` Thomas Graf
[not found] ` <20141202170927.GA9457-FZi0V3Vbi30CUdFEqe4BF2D2FQJk+8+b@public.gmane.org>
2014-12-02 17:34 ` Michael S. Tsirkin
2014-12-02 17:41 ` Thomas Graf
2014-12-02 18:12 ` Jesse Gross
[not found] ` <CAEP_g=-86Z6pxNow-wjnbx_v9er_TSn6x5waigqVqYHa7tEQJw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-12-03 9:03 ` Michael S. Tsirkin
2014-12-03 18:07 ` Jesse Gross
[not found] ` <CAEP_g=9C+D3gbjJ4n1t6xuyjqEAMYi4ZfqPoe92UAoQJH-UsKg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-12-03 18:38 ` Michael S. Tsirkin
2014-12-03 18:56 ` Rick Jones
[not found] ` <547F5CC2.8000908-VXdhtT5mjnY@public.gmane.org>
2014-12-04 10:17 ` Michael S. Tsirkin
2014-12-03 19:38 ` Jesse Gross
2014-12-03 22:02 ` Thomas Graf
[not found] ` <20141203220244.GA8822-FZi0V3Vbi30CUdFEqe4BF2D2FQJk+8+b@public.gmane.org>
2014-12-03 22:50 ` Michael S. Tsirkin
2014-12-03 22:51 ` Jesse Gross
2014-12-03 23:05 ` Thomas Graf
[not found] ` <20141203230551.GC8822-FZi0V3Vbi30CUdFEqe4BF2D2FQJk+8+b@public.gmane.org>
2014-12-04 0:54 ` Jesse Gross
2014-12-04 1:15 ` Thomas Graf [this message]
2014-12-04 1:51 ` Jesse Gross
2014-12-04 9:26 ` Thomas Graf
2014-12-04 23:19 ` Jesse Gross
2014-12-04 7:48 ` Du Fan
2014-12-04 23:23 ` Jesse Gross
2014-12-05 0:25 ` Du Fan
2014-12-03 2:31 ` Du, Fan
2015-01-05 6:02 ` Fan Du
[not found] ` <54AA2912.6090903-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2015-01-05 17:58 ` Jesse Gross
2015-01-06 9:34 ` Fan Du
2015-01-06 19:11 ` Jesse Gross
[not found] ` <CAEP_g=8bCR=PeSoi09jLWLtNUrxhzx45h1Wm=9D=R57AqUac2w-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2015-01-07 5:58 ` Fan Du
2015-01-07 20:52 ` Jesse Gross
[not found] ` <CAEP_g=8EBeQUFkRRsG3sznYryd+LE9qJKWQXfS==HG2HDO=UKA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2015-01-08 9:39 ` Fan Du
2015-01-08 19:55 ` Jesse Gross
[not found] ` <CAEP_g=9hh+MG7AWEnct7CwRqp=ZghpbkDeQ5BhGQktDgMST1jA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2015-01-09 5:42 ` Fan Du
2015-01-12 18:48 ` Jesse Gross
2015-01-09 5:48 ` Fan Du
2015-01-12 18:55 ` Jesse Gross
2015-01-13 16:58 ` Thomas Graf
2014-12-02 15:44 ` Flavio Leitner
2014-12-02 18:06 ` Jesse Gross
2014-12-02 21:32 ` Flavio Leitner
2014-12-02 21:47 ` Jesse Gross
2014-12-03 1:58 ` Du, Fan
2014-11-30 10:26 ` Florian Westphal
2014-11-30 10:55 ` Du, Fan
2014-11-30 15:11 ` Florian Westphal
2014-12-01 6:47 ` Du, Fan
2014-12-03 3:23 ` David Miller
2014-12-03 3:32 ` Du, Fan
2014-12-03 4:35 ` David Miller
2014-12-03 4:50 ` Du, Fan
2014-12-03 5:14 ` David Miller
2014-12-03 6:53 ` Du, Fan
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