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id 15.20.2921.030; Tue, 21 Apr 2020 14:37:47 +0000 From: "Scheffenegger, Richard" To: Jonathan Looney CC: "transport@freebsd.org" , Michael Tuexen , Randall Stewart , Lawrence Stewart , "rgrimes@freebsd.org" , "Cui, Cheng" Subject: RE: recwin change Thread-Topic: recwin change Thread-Index: AdYX4aXnxeSiThzzSJqCV0CZdohkfwAB0XmAAAAXiiA= Date: Tue, 21 Apr 2020 14:37:46 +0000 Message-ID: References: In-Reply-To: Accept-Language: de-AT, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [185.236.167.136] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: 0a6550c6-2fee-478a-4b67-08d7e6018f5b x-ms-traffictypediagnostic: SN4PR0601MB3696: x-ms-exchange-transport-forked: True x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:6790; x-forefront-prvs: 038002787A x-forefront-antispam-report: CIP:255.255.255.255; CTRY:; LANG:en; SCL:1; SRV:; IPV:NLI; SFV:NSPM; H:SN4PR0601MB3728.namprd06.prod.outlook.com; PTR:; CAT:NONE; SFTY:; 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id 15.20.2921.030; Tue, 21 Apr 2020 23:51:21 +0000 From: "Scheffenegger, Richard" To: Jonathan Looney , Michael Tuexen , Lawrence Stewart , Randall Ray Stewart , Tom Jones CC: "rgrimes@freebsd.org" , "transport@freebsd.org" Subject: Categorizing Diffs for Review/Transport Call. Thread-Topic: Categorizing Diffs for Review/Transport Call. 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dkim=pass header.d=netapp.onmicrosoft.com header.s=selector1-netapp-onmicrosoft-com header.b=Eiztrsz6; dmarc=none; spf=pass (mx1.freebsd.org: domain of Richard.Scheffenegger@netapp.com designates 40.107.243.76 as permitted sender) smtp.mailfrom=Richard.Scheffenegger@netapp.com X-Spamd-Result: default: False [-4.89 / 15.00]; TO_DN_EQ_ADDR_SOME(0.00)[]; NEURAL_HAM_MEDIUM(-1.00)[-1.000,0]; R_DKIM_ALLOW(-0.20)[netapp.onmicrosoft.com:s=selector1-netapp-onmicrosoft-com]; HAS_XOIP(0.00)[]; FROM_HAS_DN(0.00)[]; TO_DN_SOME(0.00)[]; R_SPF_ALLOW(-0.20)[+ip4:40.107.0.0/16]; NEURAL_HAM_LONG(-1.00)[-1.000,0]; MIME_GOOD(-0.10)[multipart/alternative,text/plain]; DMARC_NA(0.00)[netapp.com]; RCVD_COUNT_THREE(0.00)[3]; TO_MATCH_ENVRCPT_SOME(0.00)[]; DKIM_TRACE(0.00)[netapp.onmicrosoft.com:+]; RCVD_IN_DNSWL_NONE(0.00)[76.243.107.40.list.dnswl.org : 127.0.3.0]; RCPT_COUNT_SEVEN(0.00)[7]; IP_SCORE(-1.39)[ipnet: 40.64.0.0/10(-3.73), asn: 8075(-3.19), country: US(-0.05)]; FROM_EQ_ENVFROM(0.00)[]; MIME_TRACE(0.00)[0:+,1:+,2:~]; RCVD_TLS_LAST(0.00)[]; ASN(0.00)[asn:8075, ipnet:40.64.0.0/10, country:US]; ARC_ALLOW(-1.00)[i=1]; RWL_MAILSPIKE_POSSIBLE(0.00)[76.243.107.40.rep.mailspike.net : 127.0.0.17] Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable X-Content-Filtered-By: Mailman/MimeDel 2.1.29 X-BeenThere: freebsd-transport@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Discussions of transport level network protocols in FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 21 Apr 2020 23:51:26 -0000 I thought I'd categorize the Diffs I have currently pending for review into= different bins; Those which I deem more critical are those with interoperability issues tow= ards other stacks (and RFC violations): 23364 24237 24515 23353 Correctness (RFC compliance) ECN: 23364 (ECN: CWR only with new data) - critical for interoper= ability with older Linux 23373 (parallel open case - ECN feature) Interoperability: 24237 (premature window update with outdated SACK - fix alik= e MacOS and what jtl suggested, by moving upcall to end of input processing= ; side effect is fewer locking issues) - poor performance with most Linux 23371 (parallel open case - feature negotiation) 24515 receive window retraction with window scaling - potent= ial deadlock with older Linux Performance 22438 after_idle ssthresh to =BE cwnd per 2861 (performance) Cubic: 23353 Cubic no minimal cwnd (set to 2 MSS in this diff) 23655 Cubic base_time start only after slowstart is finished Misc: 21117 optimize TCPCB by replacing unnecessarily large uint64= _t with uint8_t and bounded increment 23160 SACK partial ACK always activate TT_REXMT instead of T= T_PERSIST (no longer reproduceable with other cubic fixes) -> abandon? Feature s: 23230 ECN+ / ECN++ (new sysctl, default disabled; needed for= DCTCP later) 18624 Improve SACK scoreboard bookkeeping 18892 SACK PRR 18985 RFC6675 SACK (rescue retransmission - for transactiona= l IO). Finally, I have AccECN on my plate, but that partially depends on prior boo= kkeeping fixes, and finalization of the current draft; Richard Scheffenegger From owner-freebsd-transport@freebsd.org Fri Apr 24 14:23:45 2020 Return-Path: Delivered-To: freebsd-transport@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 71D2F2B6B02; Fri, 24 Apr 2020 14:23:45 +0000 (UTC) (envelope-from markjdb@gmail.com) Received: from mail-qk1-x742.google.com (mail-qk1-x742.google.com [IPv6:2607:f8b0:4864:20::742]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) server-signature RSA-PSS (4096 bits) client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "smtp.gmail.com", Issuer "GTS CA 1O1" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 497xHP2QXZz4R8P; Fri, 24 Apr 2020 14:23:45 +0000 (UTC) (envelope-from markjdb@gmail.com) Received: by mail-qk1-x742.google.com with SMTP id l25so10305544qkk.3; Fri, 24 Apr 2020 07:23:45 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=sender:date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to; bh=03BHvk9WhDkdFdVheP3FEUIfFXhDv4w3c+YJsKRgibA=; b=sSwyhpydJaBecIsq3Xd/7BASKuwjpEHk4siok1TXEVM/w97zEQ86llsW86Oew5dn2o DgdQiif3coVsJjS6DQTpwrSV5vT02ndOjjgB05OidzVwk+2+jOYCFEBB8l2+b0lYkAXP Z7R+TuPJE0Sa87L3LiVznJZCGH7psInyKHaTLSGh90Jh7vayib1xnIlNE2edxbedLTqd yYZl0BxW1t5xpMLk3StSAQ2EhKtkiJmMTlwUgbl9B7TKLQ8rwVbk97AJHQVTgzpYoX7u gjk+8NWQELDbEW7eLAoIzP1I91JFXaT5IIiy+D3oZ0Rkzf0PpzhQc+0fCkfWCBY/iWIs ytKg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:date:from:to:cc:subject:message-id :references:mime-version:content-disposition:in-reply-to; bh=03BHvk9WhDkdFdVheP3FEUIfFXhDv4w3c+YJsKRgibA=; b=VMM4S0eFXWao9bxqF1flgE8Hqyksx+a3gyCy3T/FiFLqjIeCrE6Otema/VKZ7sgK/w SSVU5eNjlbe1K/UIriSRHSWM8UpUwQRD9cK4ksxekgaLsIKb1cQEOdWxGcfKthQnYbqD Hh3bCkzfULWzfivMm2JOSNOFxPDrZtA7WyBrB/Rm+6m2by6cMgFN+DqY/lS1Ql/aesie PG9Z5qyMCtA+Imre45WJuHyTOaavSFOogQEX7Nny/WLvqUSWtE49VLt87fgodUKFRNyF jjfnk0dE5gVEd+RQm5wlK4jrCuzf3zIIadAJ87w7Rb9kIT7aWCnUYz3zCb76M2Id40De 2q6w== X-Gm-Message-State: AGi0PuY1KeZHYj1oY428QfXEKJJmAJKbwRYq3AekJCAKuXdbf3UKzkrW cmNR+rZfb1Ku9bTtKYRjwpoXRY3g X-Google-Smtp-Source: APiQypIHRnf3/9S1De0XSbVvqXphCZCXXugU8UKw3VOXpPEJMeVYe6Wh6ZPRBbqetP0k3IXh34tcLw== X-Received: by 2002:a05:620a:138e:: with SMTP id k14mr9234819qki.452.1587738224364; Fri, 24 Apr 2020 07:23:44 -0700 (PDT) Received: from raichu (toroon0560w-lp130-10-174-94-17-182.dsl.bell.ca. [174.94.17.182]) by smtp.gmail.com with ESMTPSA id o43sm4020060qtf.46.2020.04.24.07.23.43 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 24 Apr 2020 07:23:43 -0700 (PDT) Sender: Mark Johnston Date: Fri, 24 Apr 2020 10:23:41 -0400 From: Mark Johnston To: Tom Jones Cc: freebsd-current@freebsd.org, freebsd-transport@freebsd.org Subject: Re: How to enable tcp bbr in FreeBSD??? Message-ID: <20200424142341.GB17086@raichu> References: <20200424141508.GB78595@tom-desk.erg.abdn.ac.uk> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200424141508.GB78595@tom-desk.erg.abdn.ac.uk> X-Rspamd-Queue-Id: 497xHP2QXZz4R8P X-Spamd-Bar: ----- Authentication-Results: mx1.freebsd.org; none X-Spamd-Result: default: False [-6.00 / 15.00]; NEURAL_HAM_MEDIUM(-1.00)[-1.000,0]; NEURAL_HAM_LONG(-1.00)[-1.000,0]; REPLY(-4.00)[] X-BeenThere: freebsd-transport@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Discussions of transport level network protocols in FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 24 Apr 2020 14:23:45 -0000 On Fri, Apr 24, 2020 at 03:15:08PM +0100, Tom Jones wrote: > rrs@freebsd.org > Bcc: > Subject: Re: How to enable tcp bbr in FreeBSD??? > Reply-To: > In-Reply-To: <6042155a-297b-d85e-1d64-24d93da329a2@gmail.com> > > > ... snip ... > > > > Maybe it is not ready for prime time, i do not know why it is not in the > > default build. > > Maybe ask the committer. > > > > I have added rrs@ in cc and the freebsd-transport list. > > Does anyone know if there are plans to enable alternate TCP stacks in > generic? > > Is there a stability point we need to hit first? There are a couple of open bugs found by syzkaller (complete with reproducers) that appeared when I enabled the alternate TCP stacks: https://syzkaller.appspot.com/bug?id=986b4cecd84439df9794bda1a45d9cf0f50356fe https://syzkaller.appspot.com/bug?id=048f650e99696f881872a285cef0e3b9bd4f4e25 I'd expect these to be fixed before providing the alternate stacks in GENERIC. From owner-freebsd-transport@freebsd.org Fri Apr 24 15:28:31 2020 Return-Path: Delivered-To: freebsd-transport@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 2AAB72B8876; Fri, 24 Apr 2020 15:28:31 +0000 (UTC) (envelope-from tuexen@freebsd.org) Received: from drew.franken.de (drew.ipv6.franken.de [IPv6:2001:638:a02:a001:20e:cff:fe4a:feaa]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "*.franken.de", Issuer "COMODO RSA Domain Validation Secure Server CA" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 497yk709ybz4Whf; Fri, 24 Apr 2020 15:28:30 +0000 (UTC) (envelope-from tuexen@freebsd.org) Received: from [IPv6:2a02:8109:1140:c3d:a14a:1380:47c6:2fe7] (unknown [IPv6:2a02:8109:1140:c3d:a14a:1380:47c6:2fe7]) (Authenticated sender: macmic) by drew.franken.de (Postfix) with ESMTPSA id 4FDC272230C06; Fri, 24 Apr 2020 17:28:28 +0200 (CEST) Content-Type: text/plain; charset=us-ascii Mime-Version: 1.0 (Mac OS X Mail 13.4 \(3608.80.23.2.2\)) Subject: Re: How to enable tcp bbr in FreeBSD??? From: Michael Tuexen In-Reply-To: <20200424142341.GB17086@raichu> Date: Fri, 24 Apr 2020 17:28:27 +0200 Cc: Tom Jones , freebsd-transport@freebsd.org, freebsd-current@freebsd.org Content-Transfer-Encoding: quoted-printable Message-Id: References: <20200424141508.GB78595@tom-desk.erg.abdn.ac.uk> <20200424142341.GB17086@raichu> To: Mark Johnston X-Mailer: Apple Mail (2.3608.80.23.2.2) X-Spam-Status: No, score=-2.9 required=5.0 tests=ALL_TRUSTED,BAYES_00 autolearn=disabled version=3.4.1 X-Spam-Checker-Version: SpamAssassin 3.4.1 (2015-04-28) on mail-n.franken.de X-Rspamd-Queue-Id: 497yk709ybz4Whf X-Spamd-Bar: - Authentication-Results: mx1.freebsd.org; none X-Spamd-Result: default: False [-1.86 / 15.00]; local_wl_from(0.00)[freebsd.org]; NEURAL_HAM_MEDIUM(-0.92)[-0.924,0]; ASN(0.00)[asn:680, ipnet:2001:638::/32, country:DE]; NEURAL_HAM_LONG(-0.93)[-0.932,0] X-BeenThere: freebsd-transport@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Discussions of transport level network protocols in FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 24 Apr 2020 15:28:31 -0000 > On 24. Apr 2020, at 16:23, Mark Johnston wrote: >=20 > On Fri, Apr 24, 2020 at 03:15:08PM +0100, Tom Jones wrote: >> rrs@freebsd.org >> Bcc:=20 >> Subject: Re: How to enable tcp bbr in FreeBSD??? >> Reply-To:=20 >> In-Reply-To: <6042155a-297b-d85e-1d64-24d93da329a2@gmail.com> >>=20 >>=20 >> ... snip ... >>>=20 >>> Maybe it is not ready for prime time, i do not know why it is not in = the >>> default build. >>> Maybe ask the committer. >>>=20 >>=20 >> I have added rrs@ in cc and the freebsd-transport list.=20 >>=20 >> Does anyone know if there are plans to enable alternate TCP stacks in >> generic?=20 >>=20 >> Is there a stability point we need to hit first? >=20 > There are a couple of open bugs found by syzkaller (complete with > reproducers) that appeared when I enabled the alternate TCP stacks: >=20 > = https://syzkaller.appspot.com/bug?id=3D986b4cecd84439df9794bda1a45d9cf0f50= 356fe > = https://syzkaller.appspot.com/bug?id=3D048f650e99696f881872a285cef0e3b9bd4= f4e25 >=20 > I'd expect these to be fixed before providing the alternate stacks in > GENERIC. We talked about these yesterday in the FreeBSD telco. At least some of = them are related to OOB data. The plan is to disable handling of OOB data in the = alternate stacks. Will bring up a patch and see if that fixes the issues. Best regards Michael > _______________________________________________ > freebsd-transport@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-transport > To unsubscribe, send any mail to = "freebsd-transport-unsubscribe@freebsd.org" From owner-freebsd-transport@freebsd.org Fri Apr 24 14:16:44 2020 Return-Path: Delivered-To: freebsd-transport@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 8DF7D2B663A; Fri, 24 Apr 2020 14:16:44 +0000 (UTC) (envelope-from thj@freebsd.org) Received: from wforward2-smtp.messagingengine.com (wforward2-smtp.messagingengine.com [64.147.123.31]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 497x7H5hWGz4QZl; Fri, 24 Apr 2020 14:16:43 +0000 (UTC) (envelope-from thj@freebsd.org) Received: from compute7.internal (compute7.nyi.internal [10.202.2.47]) by mailforward.west.internal (Postfix) with ESMTP id DF37110EE; Fri, 24 Apr 2020 10:16:41 -0400 (EDT) Received: from mailfrontend2 ([10.202.2.163]) by compute7.internal (MEProxy); Fri, 24 Apr 2020 10:16:42 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:content-type:date:from:message-id :mime-version:to:x-me-proxy:x-me-proxy:x-me-sender:x-me-sender :x-sasl-enc; s=fm2; bh=dDg0fFR3o1oYRYdY3nfTrz20+k5Nx7bQ+eqE1xBu7 Lo=; b=BPJKEGU/DIDd6AS3gaEr9Bc40aAe4kWsro0WL4+Dlr1vui0afh52jqjDN QVYbwNzYe6pa3o8XN7PLPeA54tS/ETNDojCdiQfeo/a12OBD2nrC3NFzEoNwPtn3 VdqwWsrryvgDFoPi82H+0AtlgYjwnQ7cUt79gKLe6lu7JMqT5JFXjrPNyK05bn35 FBKYNrWDlMXiv7nku/M0blEsyKxgGYi0uR6rrCDxZhz5SOSKvHMlIK3TrROlIjwE Lt5CLZcvYf0xfenf7L/r4FzmRXp+tJyuVdRix3ciIyt1j25pzeB0bSsobMarYbnQ 9cTWvG4M4lBBI1Z8ooBAvR2LOkUvA== X-ME-Sender: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgeduhedrhedugdeilecutefuodetggdotefrodftvf curfhrohhfihhlvgemucfhrghsthforghilhdpqfgfvfdpuffrtefokffrpgfnqfghnecu uegrihhlohhuthemuceftddtnecusecvtfgvtghiphhivghnthhsucdlqddutddtmdengf hmphhthicushhusghjvggtthculddutddmnecujfgurhepfffhvffkgggtugesthdtredt tddtvdenucfhrhhomhepvfhomhculfhonhgvshcuoehthhhjsehfrhgvvggsshgurdhorh hgqeenucfkphepudefjedrhedtrddujedruddvnecuvehluhhsthgvrhfuihiivgeptden ucfrrghrrghmpehmrghilhhfrhhomhepthhhjhesfhhrvggvsghsugdrohhrgh X-ME-Proxy: Received: from tom-desk.erg.abdn.ac.uk (tom-desk.erg.abdn.ac.uk [137.50.17.12]) by mail.messagingengine.com (Postfix) with ESMTPA id 811C33065D91; Fri, 24 Apr 2020 10:16:40 -0400 (EDT) Date: Fri, 24 Apr 2020 15:15:08 +0100 From: Tom Jones To: Johan Hendriks Cc: freebsd-current@freebsd.org, freebsd-transport@freebsd.org Message-ID: <20200424141508.GB78595@tom-desk.erg.abdn.ac.uk> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline X-Rspamd-Queue-Id: 497x7H5hWGz4QZl X-Spamd-Bar: - Authentication-Results: mx1.freebsd.org; none X-Spamd-Result: default: False [-1.92 / 15.00]; local_wl_from(0.00)[freebsd.org]; NEURAL_HAM_MEDIUM(-0.96)[-0.963,0]; NEURAL_HAM_LONG(-0.95)[-0.954,0]; TAGGED_RCPT(0.00)[]; ASN(0.00)[asn:11403, ipnet:64.147.123.0/24, country:US] X-Mailman-Approved-At: Fri, 24 Apr 2020 20:38:26 +0000 X-BeenThere: freebsd-transport@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Discussions of transport level network protocols in FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 24 Apr 2020 14:16:44 -0000 rrs@freebsd.org Bcc: Subject: Re: How to enable tcp bbr in FreeBSD??? Reply-To: In-Reply-To: <6042155a-297b-d85e-1d64-24d93da329a2@gmail.com> ... snip ... > > Maybe it is not ready for prime time, i do not know why it is not in the > default build. > Maybe ask the committer. > I have added rrs@ in cc and the freebsd-transport list. Does anyone know if there are plans to enable alternate TCP stacks in generic? Is there a stability point we need to hit first? - Tom