From: Evgeniy Polyakov <zbr@ioremap.net>
To: Johann Baudy <johann.baudy@gnu-log.net>
Cc: Herbert Xu <herbert@gondor.apana.org.au>,
netdev@vger.kernel.org, "David S. Miller" <davem@davemloft.net>,
Patrick McHardy <kaber@trash.net>, jamal <hadi@cyberus.ca>
Subject: Re: [PATCH] TX_RING and packet mmap
Date: Wed, 15 Apr 2009 11:10:23 +0400 [thread overview]
Message-ID: <20090415071023.GA26986@ioremap.net> (raw)
In-Reply-To: <7e0dd21a0904121631u3fc7c676r12eb7e71fe87e02b@mail.gmail.com>
Hi Johann.
On Mon, Apr 13, 2009 at 01:31:14AM +0200, Johann Baudy (johann.baudy@gnu-log.net) wrote:
> So if my understanding is correct, there is no way to get original
> fragment address in destructor using skb fragment page/data.
>
> Then,
> I can't use fragments due to skb_linearize
> I can't hide pointer into skb data due to skb_copy.
> I can't rely on other fields of skb.
> IMHO, using skb pointer requires too much cpu resources (parsing
> headers to identify the right buffer...)
>
> So what can I do except using a new field?
> What do you think about adding a new field that is always linked to destructor?
> I mean adding a generic new field skb->destructor_arg.
It can work but do not place it into skb itself, but into shared area,
which is slab allocated and does not suffer from size restrictions.
You can also add shared-info destructor, which could be used by other
--
Evgeniy Polyakov
next prev parent reply other threads:[~2009-04-15 7:10 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-04-02 19:48 [PATCH] TX_RING and packet mmap Johann Baudy
2009-04-07 7:26 ` Herbert Xu
2009-04-07 12:48 ` jamal
2009-04-07 13:04 ` Herbert Xu
2009-04-07 13:47 ` jamal
2009-04-07 14:17 ` Herbert Xu
2009-04-07 14:40 ` Johann Baudy
[not found] ` <7e0dd21a0904070738jd8a2714wd840352699f1e9f1@mail.gmail.com>
2009-04-07 20:56 ` jamal
2009-04-07 21:11 ` Evgeniy Polyakov
2009-04-08 21:06 ` Johann Baudy
2009-04-12 10:27 ` Johann Baudy
2009-04-12 10:32 ` Evgeniy Polyakov
2009-04-12 11:23 ` Johann Baudy
2009-04-12 14:24 ` Evgeniy Polyakov
2009-04-12 19:27 ` Johann Baudy
2009-04-12 19:52 ` Evgeniy Polyakov
2009-04-12 20:30 ` Johann Baudy
2009-04-12 20:53 ` Evgeniy Polyakov
2009-04-12 23:31 ` Johann Baudy
2009-04-15 7:10 ` Evgeniy Polyakov [this message]
2009-04-15 13:14 ` Johann Baudy
2009-04-16 11:16 ` Evgeniy Polyakov
2009-04-18 21:38 ` Johann Baudy
2009-04-21 9:41 ` Evgeniy Polyakov
2009-04-21 13:16 ` Johann Baudy
2009-04-21 13:56 ` Evgeniy Polyakov
2009-04-08 6:51 ` Herbert Xu
2009-04-21 15:36 ` Christoph Lameter
2009-04-21 20:13 ` Johann Baudy
2009-04-21 20:42 ` Christoph Lameter
2009-04-21 21:00 ` Johann Baudy
2009-04-21 21:00 ` Christoph Lameter
2009-04-21 21:13 ` Johann Baudy
2009-04-21 20:46 ` Johann Baudy
2009-04-21 20:43 ` Christoph Lameter
2009-04-21 21:05 ` Johann Baudy
2009-04-21 21:08 ` Christoph Lameter
-- strict thread matches above, loose matches on Subject: below --
2009-04-26 13:06 Johann Baudy
2009-04-29 9:18 ` Evgeniy Polyakov
2009-04-30 20:17 ` Johann Baudy
2009-05-05 21:38 Johann Baudy
2009-05-06 7:07 ` Jarek Poplawski
2009-05-06 9:38 ` Jarek Poplawski
2009-05-09 20:31 ` David Miller
2009-05-11 21:21 Johann Baudy
2009-05-12 16:11 ` Andi Kleen
[not found] ` <7e0dd21a0905121058m1f894de6q9805e5392aef3aea@mail.gmail.com>
2009-05-12 18:00 ` Johann Baudy
[not found] ` <7e0dd21a0905121058m1f894de6q9805e5392aef3aea-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2009-05-12 18:15 ` Andi Kleen
2009-05-19 5:12 ` David Miller
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