From owner-freebsd-hackers Thu Jul 26 10:51:31 2001 Delivered-To: freebsd-hackers@freebsd.org Received: from harrier.mail.pas.earthlink.net (harrier.mail.pas.earthlink.net [207.217.121.12]) by hub.freebsd.org (Postfix) with ESMTP id 760C637B409 for ; Thu, 26 Jul 2001 10:51:19 -0700 (PDT) (envelope-from tlambert2@mindspring.com) Received: from mindspring.com (dialup-209.245.129.59.Dial1.SanJose1.Level3.net [209.245.129.59]) by harrier.mail.pas.earthlink.net (EL-8_9_3_3/8.9.3) with ESMTP id KAA04105; Thu, 26 Jul 2001 10:51:12 -0700 (PDT) Message-ID: <3B6058AC.32F6B2EB@mindspring.com> Date: Thu, 26 Jul 2001 10:51:40 -0700 From: Terry Lambert Reply-To: tlambert2@mindspring.com X-Mailer: Mozilla 4.7 [en]C-CCK-MCD {Sony} (Win98; U) X-Accept-Language: en MIME-Version: 1.0 To: Alfred Perlstein Cc: Bosko Milekic , Zhihui Zhang , vishwanath pargaonkar , freebsd-hackers@FreeBSD.ORG Subject: Re: cluster size References: <20010725140737.A25132@technokratis.com> <20010725143649.A25300@technokratis.com> <3B6050D1.9DCCD23@mindspring.com> <20010726133617.B33517@technokratis.com> <20010726123900.E26571@elvis.mu.org> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG Alfred Perlstein wrote: > > On Thu, Jul 26, 2001 at 10:18:09AM -0700, Terry Lambert wrote: > > > The real reason behind all this is to make the input and output > > > routines symmetric, since mbuf's can be allocated at interrupt, > > > and clusters can't (or couldn't, last time I looked at 4.3). > > > > They can. Whether they are or not I'm not sure. > > Er, wouldn't that be the only way for cards to refil thier DMA > recieve buffers? Look at the Tigon II and FXP drivers. The allocations in the macros turn into m_get, not m_clusterget. -- Terry To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message