Date: Thu, 26 Jul 2001 15:44:58 -0500 From: Alfred Perlstein <bright@mu.org> To: Terry Lambert <tlambert2@mindspring.com> Cc: Bosko Milekic <bmilekic@technokratis.com>, Zhihui Zhang <zzhang@cs.binghamton.edu>, vishwanath pargaonkar <vishubp@yahoo.com>, freebsd-hackers@FreeBSD.ORG Subject: Re: cluster size Message-ID: <20010726154458.H26571@elvis.mu.org> In-Reply-To: <3B6058AC.32F6B2EB@mindspring.com>; from tlambert2@mindspring.com on Thu, Jul 26, 2001 at 10:51:40AM -0700 References: <20010725140737.A25132@technokratis.com> <Pine.SOL.4.21.0107251416550.21505-100000@opal> <20010725143649.A25300@technokratis.com> <3B6050D1.9DCCD23@mindspring.com> <20010726133617.B33517@technokratis.com> <20010726123900.E26571@elvis.mu.org> <3B6058AC.32F6B2EB@mindspring.com>
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* Terry Lambert <tlambert2@mindspring.com> [010726 12:51] wrote: > 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. It looks like (at least in -current) that fxp_intr() calls fxp_add_rfabuf() which calls MGETHDR() followed by MCLGET(). -- -Alfred Perlstein [alfred@freebsd.org] Ok, who wrote this damn function called '??'? And why do my programs keep crashing in it? To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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