From: "David S. Miller" <davem@davemloft.net>
To: Herbert Xu <herbert@gondor.apana.org.au>
Cc: pablo@eurodev.net, hadi@cyberus.ca, davem@redhat.com, netdev@oss.sgi.com
Subject: Re: [PATCH] Improve behaviour of Netlink Sockets
Date: Fri, 24 Sep 2004 10:58:55 -0700 [thread overview]
Message-ID: <20040924105855.0e1aecd0.davem@davemloft.net> (raw)
In-Reply-To: <20040924062604.GA7393@gondor.apana.org.au>
On Fri, 24 Sep 2004 16:26:04 +1000
Herbert Xu <herbert@gondor.apana.org.au> wrote:
> It also means those responders that can calculate the correct size
> of the reply doesn't need to go through this copy process.
This is the crux of the problem, you don't know how big
the response will be until you look at the whole object
you are returning.
This is because there are usually an unknown number of
attributes that will be returned.
This is why I suggested the PAGE_SIZE scratchpad, you build
the response fully into there, then you know the exact size
SKB you need so you allocate it and copy into it from the
scratch pad.
It's just a response build up area, and the goal is to have
the minimum sized SKB necessary to represent the response.
next prev parent reply other threads:[~2004-09-24 17:58 UTC|newest]
Thread overview: 96+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <412DF807.2040703@eurodev.net>
[not found] ` <20040826141407.38b56729.davem@redhat.com>
[not found] ` <412EB40A.6010100@eurodev.net>
[not found] ` <20040826214710.5e322f1a.davem@redhat.com>
[not found] ` <412F1269.8090303@eurodev.net>
[not found] ` <20040827172736.543dbd54.davem@redhat.com>
2004-08-30 0:37 ` [PATCH] Improve behaviour of Netlink Sockets Pablo Neira
2004-08-31 0:20 ` David S. Miller
2004-08-31 16:37 ` Pablo Neira
2004-08-31 20:16 ` David S. Miller
2004-09-18 10:25 ` Herbert Xu
2004-09-19 4:36 ` Pablo Neira
2004-09-19 5:18 ` Pablo Neira
2004-09-19 7:58 ` Herbert Xu
2004-09-19 12:02 ` Herbert Xu
2004-09-19 12:07 ` Herbert Xu
2004-09-19 20:50 ` Pablo Neira
2004-09-19 21:53 ` Herbert Xu
2004-09-19 22:49 ` Pablo Neira
2004-09-19 23:44 ` Herbert Xu
2004-09-20 0:31 ` Pablo Neira
2004-09-20 1:00 ` Herbert Xu
2004-09-19 20:50 ` Pablo Neira
2004-09-19 21:59 ` Herbert Xu
2004-09-19 22:39 ` jamal
2004-09-19 22:55 ` Pablo Neira
2004-09-19 23:04 ` jamal
2004-09-19 23:10 ` Herbert Xu
2004-09-19 23:17 ` Herbert Xu
2004-09-20 2:39 ` jamal
2004-09-20 2:58 ` Herbert Xu
2004-09-20 12:34 ` jamal
2004-09-20 18:14 ` Pablo Neira
2004-09-20 21:59 ` Herbert Xu
2004-09-21 11:47 ` jamal
2004-09-21 12:09 ` Herbert Xu
2004-09-22 0:05 ` Herbert Xu
2004-09-22 0:24 ` Pablo Neira
2004-09-22 2:48 ` Pablo Neira
2004-09-22 2:50 ` David S. Miller
2004-09-22 2:53 ` jamal
2004-09-22 3:46 ` Herbert Xu
2004-09-22 11:35 ` jamal
2004-09-23 12:05 ` Herbert Xu
2004-09-24 2:56 ` jamal
2004-09-24 3:20 ` Herbert Xu
2004-09-27 12:41 ` jamal
2004-09-22 4:52 ` Herbert Xu
2004-09-22 12:08 ` jamal
2004-09-22 17:52 ` David S. Miller
2004-09-23 15:40 ` Pablo Neira
2004-09-23 19:16 ` David S. Miller
2004-09-24 3:28 ` Herbert Xu
2004-09-24 5:39 ` David S. Miller
2004-09-24 6:26 ` Herbert Xu
2004-09-24 17:58 ` David S. Miller [this message]
2004-09-24 22:06 ` Herbert Xu
2004-09-24 22:28 ` Herbert Xu
2004-09-27 12:59 ` jamal
2004-09-27 12:53 ` jamal
2004-09-23 12:07 ` Herbert Xu
2004-09-24 1:19 ` Pablo Neira
2004-09-24 3:04 ` jamal
2004-09-24 3:24 ` Herbert Xu
2004-09-27 12:46 ` jamal
2004-09-27 21:36 ` Herbert Xu
2004-09-28 2:43 ` jamal
2004-09-28 2:46 ` Herbert Xu
2004-09-28 3:06 ` jamal
2004-09-28 3:23 ` Herbert Xu
2004-09-28 3:45 ` jamal
2004-09-28 3:59 ` Herbert Xu
2004-09-28 10:36 ` jamal
2004-09-28 11:11 ` Herbert Xu
2004-09-28 12:16 ` Herbert Xu
2004-09-28 12:39 ` On DaveMs congestion control algorithm WAS(Re: " jamal
2004-09-28 18:24 ` David S. Miller
2004-09-29 2:23 ` jamal
2004-09-28 12:32 ` jamal
2004-09-29 0:13 ` Herbert Xu
2004-09-29 2:52 ` jamal
2004-09-29 3:27 ` Herbert Xu
2004-09-29 4:02 ` David S. Miller
2004-09-29 10:50 ` jamal
2004-09-29 11:42 ` Herbert Xu
2004-09-29 13:55 ` jamal
2004-09-28 21:07 ` Pablo Neira
2004-09-28 23:19 ` Herbert Xu
2004-09-28 23:20 ` David S. Miller
2004-09-29 2:28 ` jamal
2004-09-29 2:30 ` Herbert Xu
2004-09-29 2:59 ` jamal
2004-09-22 2:57 ` jamal
2004-09-22 3:39 ` Herbert Xu
2004-09-19 20:47 ` Pablo Neira
2004-09-19 21:20 ` Herbert Xu
2004-09-19 22:14 ` Pablo Neira
2004-09-19 23:31 ` Herbert Xu
[not found] ` <E1C90Da-0001V7-00@gondolin.me.apana.org.au>
2004-09-19 12:00 ` Herbert Xu
2004-09-29 9:53 James Chapman
2004-09-29 9:59 ` Herbert Xu
-- strict thread matches above, loose matches on Subject: below --
2004-09-30 9:50 James Chapman
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