Date: Sun, 29 Jun 2014 12:16:30 -0400 From: Allan Jude <allanjude@freebsd.org> To: freebsd-hackers@freebsd.org Subject: Re: ipfw pipe config bw tun0 Message-ID: <53B03BDE.8020302@freebsd.org> 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>
index | next in thread | previous in thread | raw e-mail
[-- Attachment #1 --] On 2014-06-29 10:52, Luigi Rizzo 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" > If you check out the IPFW article in the FreeBSD Journal May/June issue, I have some better examples. When I get time I'll work similar examples into the handbook and maybe the man page. -- Allan Jude [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.22 (MingW32) Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQIcBAEBAgAGBQJTsDvgAAoJEJrBFpNRJZKfUKgP/2cipTTYZ+KAr9MB+BOyhEF1 Z9flNFQ61FAidKIyLRAjoJLspSphvnD0C3R6h3hI8Gi9i13W9WjgZcA7lQfXx+SL 9NxDexJB+WL6Tc0se/Oua7yQ7rcqO6lSmd2ls3rzet+mwegvQ1zj4eyJE2lu1uge rbbN8Pm72ovqTYObc9tZ7y45HPBdCHD/AtwxMZdkkMRZU7CilkMpLoD+UE/sxcbD X73Efe2i6TyVZKWD9xZPWOlkg+QI9g7VUg3/cVsr5G763ODou0qwVkEvLyhbuFAj MmB9qgKCBTuMshh9ASR4CmjVOzXhV8r5PZpgf0U/V2OeSVN5xYdmKm3IDm3c2C6T +Rp0MxPpavhBpAyQhA88qflJpfL76qY5cVtJoqeIi0q3052qlvoUDQQqqxp1r2Lg LMALhoNZv1UHpoS+XonTjNg5grzQcDV6csq36bs8Gyg9n37n2C36cZ5aCYV+3QBj a/M6Ck5vk2tT11QKKww8Mvlys5aauHuIFrmJM5gQcRCeuK/VBjcOzlXYe/dS11IR wmX+FJpPo465yUgepGwg9QudOKIEs3J7L48B24Zoahmaw7KvSlA26zUZm0WiQ/7q M7vPWIaIpqK32EzMJ+QHfGmfik9iSa6yfQwvjZ3t4oxF5hXPQVUTrgK8RDya7+KH Uqkj6OKdDfGuRZ4aUth4 =fJX4 -----END PGP SIGNATURE-----help
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?53B03BDE.8020302>