From: Gleb Natapov <gleb@minantech.com>
To: Arjan van de Ven <arjan@infradead.org>
Cc: Hayim Shaul <hayim@post.tau.ac.il>, linux-kernel@vger.kernel.org
Subject: Re: mmap/munmap bug
Date: Tue, 22 Mar 2005 09:56:58 +0200 [thread overview]
Message-ID: <20050322075658.GA32445@minantech.com> (raw)
In-Reply-To: <1111430042.6952.70.camel@laptopd505.fenrus.org>
On Mon, Mar 21, 2005 at 07:34:02PM +0100, Arjan van de Ven wrote:
> On Mon, 2005-03-21 at 17:32 +0200, Hayim Shaul wrote:
> > Hi all,
> >
> > I have an unexplained bug with mmap/munmap on 2.6.X.
> >
> > I'm writing a kernel module that gives super-fast access to the network.
> > It does so by doing mmap thus avoiding the memcpy to/from user.
>
> well... you are aware the network stack already supports generic zero
> copy networking, right ?
>
Does it support zero copy not only for send but also for receive? Can we
receive packets directly to userspace buffers?
--
Gleb.
next prev parent reply other threads:[~2005-03-22 7:57 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-03-21 15:32 mmap/munmap bug Hayim Shaul
2005-03-21 18:34 ` Arjan van de Ven
2005-03-22 7:56 ` Gleb Natapov [this message]
2005-03-22 8:05 ` Arjan van de Ven
2005-03-22 8:23 ` Hayim Shaul
2005-03-22 8:33 ` Arjan van de Ven
2005-03-22 9:44 ` Hayim Shaul
[not found] <20050322084545.88435.qmail@web15304.mail.bjs.yahoo.com>
2005-03-22 9:38 ` Hayim Shaul
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