Date: Sun, 29 Jun 2014 09:29:44 -0700 From: Adrian Chadd <adrian@freebsd.org> To: Luigi Rizzo <rizzo@iet.unipi.it> Cc: Wojciech Puchar <wojtek@wojtek.tensor.gdynia.pl>, "freebsd-hackers@freebsd.org" <freebsd-hackers@freebsd.org> Subject: Re: ipfw pipe config bw tun0 Message-ID: <CAJ-Vmokh52K0a7%2B-VM2e_885iueBjr1qq99tfr18_eYKtZW7Mg@mail.gmail.com> In-Reply-To: <CA%2BhQ2%2BgREg_L4Ar021EOSjcc9xPOPinpDeTefpP0B4zz4%2B0_Nw@mail.gmail.com> References: <alpine.BSF.2.00.1406291615530.88662@wojtek.tensor.gdynia.pl> <CA%2BhQ2%2BgREg_L4Ar021EOSjcc9xPOPinpDeTefpP0B4zz4%2B0_Nw@mail.gmail.com>
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We can start adding that. How should it behave for multi-queue devices? -a On 29 June 2014 07:52, Luigi Rizzo <rizzo@iet.unipi.it> wrote: > On Sun, Jun 29, 2014 at 4:16 PM, Wojciech Puchar < > wojtek@wojtek.tensor.gdynia.pl> wrote: > >> i tried to use ipfw dummynet as described in manual >> >> --- >> If a device name is specified instead of a numeric value, as in >> >> ipfw pipe 1 config bw tun0 >> >> then the transmit clock is supplied by the specified device. >> At >> the moment only the tun(4) device supports this functionality, >> for use in conjunction with ppp(8). >> >> ---- >> >> >> got "no if support" error message. what i missed? >> > > you missed nothing -- it's just that no device that i know > of still implements the feature. > i implemented it 15 years ago and enabled it on the 'ed' > device driver only. > > What it needed is a notification on the transmit > interrupt to kick the pipe and tell it how many > packets went out (at the time 'ed' only supported > one packet at a time, so the code might make > assumptions). > > It might need a bit of redesign these days to make it > work efficiently with fast pipes and deep interface queues. > > cheers > luigi > _______________________________________________ > freebsd-hackers@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-hackers > To unsubscribe, send any mail to "freebsd-hackers-unsubscribe@freebsd.org"
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