Date: Tue, 9 Feb 1999 08:13:08 -0800 (PST) From: Archie Cobbs <archie@whistle.com> To: bmcgover@cisco.com (Brian McGovern) Cc: hackers@FreeBSD.ORG Subject: Re: Docs on line disciplines? Message-ID: <199902091613.IAA32509@bubba.whistle.com> In-Reply-To: <199902091441.JAA02508@bmcgover-pc.cisco.com> from Brian McGovern at "Feb 9, 99 09:41:44 am"
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Brian McGovern writes: > I'm looking to see if anyone can point me at documents for implementing a new > line discipline... I'm looking at creating something that will take a > set of data (Voice RTP packets, to be precise), and handle packetizing it > while passing it up. > > The idea is to take a character at a time from the tty driver (a la l_rint), > and watch for special escaping of the character using the upper 8 bits > (ie - Start of Frame and End of Frame), then buffer the characters until > we have a complete packet of data. Then, I want to throw some header info > on the front end, and a trailer on the back, and stuff it in to the right > part of the clist for the tty (t_rawq or t_canq). You might take a look at the netgraph sync<->async converter node/line discipline, just to get started.. it doesn't use rawq or canq though.. ftp://ftp.whistle.com/pub/archie/netgraph/index.html -Archie ___________________________________________________________________________ Archie Cobbs * Whistle Communications, Inc. * http://www.whistle.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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