Date: Tue, 2 Apr 2013 20:39:17 -0700 From: Adrian Chadd <adrian@freebsd.org> To: Julian Elischer <julian@freebsd.org> Cc: freebsd-hackers@freebsd.org, gary mazzaferro <garym@oedata.com> Subject: Re: Need advice on sys5 shm and zero copy sockets Message-ID: <CAJ-VmonSMi1SVWKE8DTwa=FQ_Q3diHX4iiWwBZmLfk3eLnFwKA@mail.gmail.com> In-Reply-To: <515B9CF0.2060808@freebsd.org> References: <CAGwOJnybaQ7%2BAgnoiFZEBruvFyZOKjW3S8tAYzkTx7pX9K%2B_Vw@mail.gmail.com> <515B9CF0.2060808@freebsd.org>
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On 2 April 2013 20:07, Julian Elischer <julian@freebsd.org> wrote: > this sound somewhat like what I did back in the 90s with BSD4.3 > unfortunately it was not done with TCP (or sctp of course) > > what we did was to create a special shared memeory device driver. > Then we added ioctls to the disk driver layer to write named > blocks of memory from that device to the raw device (we didin't use a > filesystem). Funny that. I have to do something like this for this software radio NIC, that does a hundred or so megabytes a second of DMA. Eek. Adrian
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