From: Herbert Xu <herbert@gondor.apana.org.au>
To: David Miller <davem@davemloft.net>
Cc: zbr@ioremap.net, dada1@cosmosbay.com, w@1wt.eu, ben@zeus.com,
jarkao2@gmail.com, mingo@elte.hu, linux-kernel@vger.kernel.org,
netdev@vger.kernel.org, jens.axboe@oracle.com
Subject: Re: [PATCH] tcp: splice as many packets as possible at once
Date: Wed, 14 Jan 2009 11:51:10 +1100 [thread overview]
Message-ID: <20090114005110.GA6814@gondor.apana.org.au> (raw)
In-Reply-To: <20090113.161625.111759506.davem@davemloft.net>
David Miller <davem@davemloft.net> wrote:
>
> I wish there were some way we could make this code grab and release a
> reference to the SKB data area (I mean skb_shinfo(skb)->dataref) to
> accomplish it's goals.
We can probably do that for spliced data that end up going to
the networking stack again. However, as splice is generic the
data may be headed to a destination other than the network stack.
In that case to make dataref work we'd need some mechanism
that allows non-network entities to get/drop this ref count.
Cheers,
--
Visit Openswan at http://www.openswan.org/
Email: Herbert Xu ~{PmV>HI~} <herbert@gondor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
next prev parent reply other threads:[~2009-01-14 0:52 UTC|newest]
Thread overview: 190+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-01-08 17:30 [PATCH] tcp: splice as many packets as possible at once Willy Tarreau
2009-01-08 19:44 ` Jens Axboe
2009-01-08 22:03 ` Willy Tarreau
2009-01-08 21:50 ` Ben Mansell
2009-01-08 21:55 ` David Miller
2009-01-08 22:20 ` Willy Tarreau
2009-01-13 23:08 ` David Miller
2009-01-09 6:47 ` Eric Dumazet
2009-01-09 7:04 ` Willy Tarreau
2009-01-09 7:28 ` Eric Dumazet
2009-01-09 7:42 ` Willy Tarreau
2009-01-13 23:27 ` David Miller
2009-01-13 23:35 ` Eric Dumazet
2009-01-09 15:42 ` Eric Dumazet
2009-01-09 17:57 ` Eric Dumazet
2009-01-09 18:54 ` Willy Tarreau
2009-01-09 20:51 ` Eric Dumazet
2009-01-09 21:24 ` Willy Tarreau
2009-01-09 22:02 ` Eric Dumazet
2009-01-09 22:09 ` Willy Tarreau
2009-01-09 22:07 ` Willy Tarreau
2009-01-09 22:12 ` Eric Dumazet
2009-01-09 22:17 ` Willy Tarreau
2009-01-09 22:42 ` Evgeniy Polyakov
2009-01-09 22:50 ` Willy Tarreau
2009-01-09 23:01 ` Evgeniy Polyakov
2009-01-09 23:06 ` Willy Tarreau
2009-01-10 7:40 ` Eric Dumazet
2009-01-11 12:58 ` Evgeniy Polyakov
2009-01-11 13:14 ` Eric Dumazet
2009-01-11 13:35 ` Evgeniy Polyakov
2009-01-11 16:00 ` Eric Dumazet
2009-01-11 16:05 ` Evgeniy Polyakov
2009-01-14 0:07 ` David Miller
2009-01-14 0:13 ` Evgeniy Polyakov
2009-01-14 0:16 ` David Miller
2009-01-14 0:22 ` Evgeniy Polyakov
2009-01-14 0:37 ` David Miller
2009-01-14 3:51 ` Herbert Xu
2009-01-14 4:25 ` David Miller
2009-01-14 7:27 ` David Miller
2009-01-14 8:26 ` Herbert Xu
2009-01-14 8:53 ` Jarek Poplawski
2009-01-14 9:29 ` David Miller
2009-01-14 9:42 ` Jarek Poplawski
2009-01-14 10:06 ` David Miller
2009-01-14 10:47 ` Jarek Poplawski
2009-01-14 11:29 ` Herbert Xu
2009-01-14 11:40 ` Jarek Poplawski
2009-01-14 11:45 ` Jarek Poplawski
2009-01-14 9:54 ` Jarek Poplawski
2009-01-14 10:01 ` Willy Tarreau
2009-01-14 12:06 ` Jarek Poplawski
2009-01-14 12:15 ` Jarek Poplawski
2009-01-14 11:28 ` Herbert Xu
2009-01-15 23:03 ` Willy Tarreau
2009-01-15 23:19 ` David Miller
2009-01-15 23:19 ` Herbert Xu
2009-01-15 23:26 ` David Miller
2009-01-15 23:32 ` Herbert Xu
2009-01-15 23:34 ` David Miller
2009-01-15 23:42 ` Willy Tarreau
2009-01-15 23:44 ` Willy Tarreau
2009-01-15 23:54 ` David Miller
2009-01-19 0:42 ` Willy Tarreau
2009-01-19 3:08 ` Herbert Xu
2009-01-19 3:27 ` David Miller
2009-01-19 6:14 ` Willy Tarreau
2009-01-19 6:19 ` David Miller
2009-01-19 6:45 ` Willy Tarreau
2009-01-19 10:19 ` Herbert Xu
2009-01-19 20:59 ` David Miller
2009-01-19 21:24 ` Herbert Xu
2009-01-25 21:03 ` Willy Tarreau
2009-01-26 7:59 ` Jarek Poplawski
2009-01-26 8:12 ` Willy Tarreau
2009-01-19 8:40 ` Jarek Poplawski
2009-01-19 3:28 ` David Miller
2009-01-19 6:11 ` Willy Tarreau
2009-01-24 21:23 ` Willy Tarreau
2009-01-20 12:01 ` Ben Mansell
2009-01-20 12:11 ` Evgeniy Polyakov
2009-01-20 13:43 ` Ben Mansell
2009-01-20 14:06 ` Jarek Poplawski
2009-01-16 6:51 ` Jarek Poplawski
2009-01-19 6:08 ` David Miller
2009-01-19 6:16 ` David Miller
2009-01-19 10:20 ` Herbert Xu
2009-01-20 8:37 ` Jarek Poplawski
2009-01-20 9:33 ` [PATCH v2] " Jarek Poplawski
2009-01-20 10:00 ` Evgeniy Polyakov
2009-01-20 10:20 ` Jarek Poplawski
2009-01-20 10:31 ` Evgeniy Polyakov
2009-01-20 11:01 ` Jarek Poplawski
2009-01-20 17:16 ` David Miller
2009-01-21 9:54 ` Jarek Poplawski
2009-01-22 9:04 ` [PATCH v3] " Jarek Poplawski
2009-01-26 5:22 ` David Miller
2009-01-27 7:11 ` Herbert Xu
2009-01-27 7:54 ` Jarek Poplawski
2009-01-27 10:09 ` Herbert Xu
2009-01-27 10:35 ` Jarek Poplawski
2009-01-27 10:57 ` Jarek Poplawski
2009-01-27 11:48 ` Herbert Xu
2009-01-27 12:16 ` Jarek Poplawski
2009-01-27 12:31 ` Jarek Poplawski
2009-01-27 17:06 ` David Miller
2009-01-28 8:10 ` Jarek Poplawski
2009-02-01 8:41 ` David Miller
2009-01-26 8:20 ` [PATCH v2] " Jarek Poplawski
2009-01-26 21:21 ` Evgeniy Polyakov
2009-01-27 6:10 ` David Miller
2009-01-27 7:40 ` Jarek Poplawski
2009-01-30 21:42 ` David Miller
2009-01-30 21:59 ` Willy Tarreau
2009-01-30 22:03 ` David Miller
2009-01-30 22:13 ` Willy Tarreau
2009-01-30 22:15 ` David Miller
2009-01-30 22:16 ` Herbert Xu
2009-02-02 8:08 ` Jarek Poplawski
2009-02-02 8:18 ` David Miller
2009-02-02 8:43 ` Jarek Poplawski
2009-02-03 7:50 ` David Miller
2009-02-03 9:41 ` Jarek Poplawski
2009-02-03 11:10 ` Evgeniy Polyakov
2009-02-03 11:24 ` Herbert Xu
2009-02-03 11:49 ` Evgeniy Polyakov
2009-02-03 11:53 ` Herbert Xu
2009-02-03 12:07 ` Evgeniy Polyakov
2009-02-03 12:12 ` Herbert Xu
2009-02-03 12:18 ` Evgeniy Polyakov
2009-02-03 12:25 ` Willy Tarreau
2009-02-03 12:28 ` Herbert Xu
2009-02-04 0:47 ` David Miller
2009-02-04 6:19 ` Willy Tarreau
2009-02-04 8:12 ` Evgeniy Polyakov
2009-02-04 8:54 ` Willy Tarreau
2009-02-04 8:59 ` Herbert Xu
2009-02-04 9:01 ` David Miller
2009-02-04 9:12 ` Willy Tarreau
2009-02-04 9:15 ` David Miller
2009-02-04 19:19 ` Roland Dreier
2009-02-04 19:28 ` Willy Tarreau
2009-02-04 19:48 ` Jarek Poplawski
2009-02-05 8:32 ` Bill Fink
2009-02-04 9:12 ` David Miller
2009-02-03 12:27 ` Herbert Xu
2009-02-03 13:05 ` david
2009-02-03 12:12 ` Evgeniy Polyakov
2009-02-03 12:18 ` Herbert Xu
2009-02-03 12:30 ` Evgeniy Polyakov
2009-02-03 12:33 ` Herbert Xu
2009-02-03 12:33 ` Nick Piggin
2009-02-04 0:46 ` David Miller
2009-02-04 9:41 ` Benny Amorsen
2009-02-04 12:01 ` Herbert Xu
2009-02-03 12:36 ` Jarek Poplawski
2009-02-03 13:06 ` Evgeniy Polyakov
2009-02-03 13:25 ` Jarek Poplawski
2009-02-03 14:20 ` Evgeniy Polyakov
2009-02-04 0:46 ` David Miller
2009-02-04 8:08 ` Evgeniy Polyakov
2009-02-04 9:23 ` Nick Piggin
2009-02-04 7:56 ` Jarek Poplawski
2009-02-06 7:52 ` David Miller
2009-02-06 8:09 ` Herbert Xu
2009-02-06 9:10 ` Jarek Poplawski
2009-02-06 9:17 ` David Miller
2009-02-06 9:42 ` Jarek Poplawski
2009-02-06 9:49 ` David Miller
2009-02-06 9:23 ` Herbert Xu
2009-02-06 9:51 ` Jarek Poplawski
2009-02-06 10:28 ` Herbert Xu
2009-02-06 10:58 ` Jarek Poplawski
2009-02-06 11:10 ` Willy Tarreau
2009-02-06 11:47 ` Jarek Poplawski
2009-02-06 18:59 ` Jarek Poplawski
2009-02-03 11:38 ` Nick Piggin
2009-01-27 18:42 ` David Miller
2009-01-15 23:32 ` [PATCH] " Willy Tarreau
2009-01-15 23:35 ` David Miller
2009-01-14 0:51 ` Herbert Xu [this message]
2009-01-14 1:24 ` David Miller
2009-01-09 22:45 ` Eric Dumazet
2009-01-09 22:53 ` Willy Tarreau
2009-01-09 23:34 ` Eric Dumazet
2009-01-13 5:45 ` David Miller
2009-01-14 0:05 ` David Miller
2009-01-13 23:31 ` David Miller
2009-01-13 23:26 ` David Miller
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