From owner-freebsd-net@freebsd.org Wed Sep 25 13:51:22 2019 Return-Path: Delivered-To: freebsd-net@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 1771D127B00 for ; Wed, 25 Sep 2019 13:51:22 +0000 (UTC) (envelope-from eugen@grosbein.net) Received: from hz.grosbein.net (hz.grosbein.net [IPv6:2a01:4f8:c2c:26d8::2]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "hz.grosbein.net", Issuer "hz.grosbein.net" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id 46dfbr1rclz3QrL; Wed, 25 Sep 2019 13:51:19 +0000 (UTC) (envelope-from eugen@grosbein.net) Received: from eg.sd.rdtc.ru (eg.sd.rdtc.ru [IPv6:2a03:3100:c:13:0:0:0:5]) by hz.grosbein.net (8.15.2/8.15.2) with ESMTPS id x8PDpFX9080965 (version=TLSv1.2 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 25 Sep 2019 13:51:15 GMT (envelope-from eugen@grosbein.net) X-Envelope-From: eugen@grosbein.net X-Envelope-To: jhay@meraka.org.za Received: from eg.sd.rdtc.ru (eugen@localhost [127.0.0.1]) by eg.sd.rdtc.ru (8.15.2/8.15.2) with ESMTP id x8PDpEeA072216; Wed, 25 Sep 2019 20:51:14 +0700 (+07) (envelope-from eugen@grosbein.net) Subject: Re: dummynet: bandwidth is limited to 2 Gbit/s ? To: John Hay References: <201909242219.x8OMJP3P013498@gndrsh.dnsmgr.net> <5D8B3056.1020904@grosbein.net> Cc: "Rodney W. Grimes" , freebsd-net , Andriy Gapon From: Eugene Grosbein Message-ID: <5D8B70D2.3040706@grosbein.net> Date: Wed, 25 Sep 2019 20:51:14 +0700 User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:38.0) Gecko/20100101 Thunderbird/38.4.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Spam-Status: No, score=3.0 required=5.0 tests=BAYES_00, DATE_IN_FUTURE_96_Q, LOCAL_FROM, SPF_HELO_NONE, SPF_PASS autolearn=no autolearn_force=no version=3.4.2 X-Spam-Report: * -2.3 BAYES_00 BODY: Bayes spam probability is 0 to 1% * [score: 0.0000] * 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record * -0.0 SPF_PASS SPF: sender matches SPF record * 2.7 DATE_IN_FUTURE_96_Q Date: is 4 days to 4 months after Received: * date * 2.6 LOCAL_FROM From my domains X-Spam-Level: *** X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on hz.grosbein.net X-Rspamd-Queue-Id: 46dfbr1rclz3QrL X-Spamd-Bar: -- Authentication-Results: mx1.freebsd.org; dkim=none; dmarc=none; spf=permerror (mx1.freebsd.org: domain of eugen@grosbein.net uses mechanism not recognized by this client) smtp.mailfrom=eugen@grosbein.net X-Spamd-Result: default: False [-2.66 / 15.00]; ARC_NA(0.00)[]; NEURAL_HAM_MEDIUM(-1.00)[-0.998,0]; FROM_HAS_DN(0.00)[]; RCPT_COUNT_THREE(0.00)[4]; NEURAL_HAM_LONG(-1.00)[-1.000,0]; MIME_GOOD(-0.10)[text/plain]; MIME_TRACE(0.00)[0:+]; DMARC_NA(0.00)[grosbein.net]; RCVD_COUNT_THREE(0.00)[3]; TO_MATCH_ENVRCPT_SOME(0.00)[]; TO_DN_ALL(0.00)[]; R_SPF_PERMFAIL(0.00)[]; RCVD_TLS_LAST(0.00)[]; FROM_EQ_ENVFROM(0.00)[]; R_DKIM_NA(0.00)[]; SUBJECT_ENDS_QUESTION(1.00)[]; ASN(0.00)[asn:24940, ipnet:2a01:4f8::/29, country:DE]; MID_RHS_MATCH_FROM(0.00)[]; IP_SCORE(-1.57)[ip: (-4.01), ipnet: 2a01:4f8::/29(-2.03), asn: 24940(-1.78), country: DE(-0.01)] X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 25 Sep 2019 13:51:22 -0000 On 25.09.2019 17:27, John Hay wrote: > > > On Wed, 25 Sep 2019 at 11:16, Eugene Grosbein > wrote: > > On 25.09.2019 05:19, Rodney W. Grimes wrote: > > >> AFAIK, we never had any public ABI or stable KBI interface announced to userland or in-kernel consumers > >> and had no consumers of dummynet other than ipfw(8) binary. Just increase type. > > > > Any attempt to mfc this would break KABI/userland and that is never > > a good thing to do. It may not be a public ABI, but it is an ABI, > > and stability of that and backwards compatibility are always a good > > thing to strive for. > > Agreed. So, no MFC for this. > > > Will this break upgrades with freebsd-update? On a major upgrade, it will first install the new kernel and require a reboot before you run freebsd-update again to install the rest. So it will run without dummynet pipes (traffic shaping) configured meantime. Is it big deal?