Date: Mon, 12 Jul 2004 18:02:44 +0400 From: "Andrew" <infofarmer@mail.ru> To: "Matthew Seaman" <m.seaman@infracaninophile.co.uk> Cc: freebsd-questions@freebsd.org Subject: Re: Kernel-level PPPoE server Message-ID: <00df01c46818$e7def930$0111a8c0@SATPC> References: <000e01c467b3$b07bd950$0111a8c0@SATPC> <20040712084813.GB92187@happy-idiot-talk.infracaninophile.co.uk>
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On Monday, July 12, 2004 12:48PM +0400, Matthew Seaman wrote: > Is there any particular reason why you insist on using the kernel > pppd? This whole question of speed is a shibboleth -- any tiny little > increase you might get between running user mode PPP vs kernel mode > PPP[1] is entirely outweighed by the fact that the limiting factor is > the available downstream bandwidth. Even if you have 10 Mb/s cable, > either of those PPP implementations will be able to pump data down the > link at full speed without breaking into a sweat. > If you need your PPPoE setup and running any time soon, I suggest > using the usermode PPP. On the other hand, patches to the kernel mode > PPP to add the functionality you need would certainly be well > received. > > [1] And don't assume that kernel mode PPP will automatically be faster > in this sense either. You'ld need to make some quite careful > measurements to be able to say for sure. Thanks, but I'm just curious - it must be very easy to set up pppd with pppoed, but nobody seems to have done it at all! As for speed and perfomance: you can find some tests at [2] and handbook implies it as well [3]. Now, I know that using mpd is one way, but I think pppd would cope just fine. Again: is there a way to open a pty-tty representing current stdin and stdout? [2] http://www.jraitala.net/comp/articles/2002/pppoe/ [3] http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/ppp-and-slip.html#PPP-AND-SLIP-SYNOPSIS > On Mon, Jul 12, 2004 at 05:58:12AM +0400, Andrew wrote: > > > I run FreeBSD4.10-Release and I want to set up a kernel-level PPPoE server. > > The problem is I can't find a way to make pppd work with pppoed. As you > > know, pppoed executes "exec /usr/sbin/ppp -direct label" by default, but it > > can be passed any other line to execute. Pppoed(8) says: "The child process > > will have standard input and standard output attached to the same > > netgraph(4) data socket (see ng_socket(4)) when started." Unfortunately, > > pppd has no analog of "direct" option for ppp. If we execute pppd without > > any tty_name, then it assumes "/dev/tty" and, as expected, exits after an > > error: "Failed to open /dev/tty: Device not configured". > > > > Since pppoed can execute any line, we can run any script or program before > > we invoke pppd. So, is there any way to open a pseudo-terminal that would > > connect to current standart input and standart output? Pppoed opens a pppoe > > connection via ng_pppoe and ng_socket, all we need for pppd to work is a > > device (tty) representing the data socket. > > > > Is there any other way to get pppd and pppoed working together? > > > > Is there any other way to set up a fast pppoe server under FreeBSD?
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