From owner-freebsd-net@freebsd.org Thu Nov 7 07:48:52 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 062E61AA966 for ; Thu, 7 Nov 2019 07:48:52 +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 477wWk4vVZz4Fpr; Thu, 7 Nov 2019 07:48:50 +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 xA77mgBe067827 (version=TLSv1.2 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 7 Nov 2019 07:48:44 GMT (envelope-from eugen@grosbein.net) X-Envelope-From: eugen@grosbein.net X-Envelope-To: lstewart@freebsd.org Received: from [10.58.0.4] ([10.58.0.4]) by eg.sd.rdtc.ru (8.15.2/8.15.2) with ESMTPS id xA77mceo000428 (version=TLSv1.2 cipher=DHE-RSA-AES128-SHA bits=128 verify=NOT); Thu, 7 Nov 2019 14:48:38 +0700 (+07) (envelope-from eugen@grosbein.net) Subject: Re: 10g IPsec ? To: Lawrence Stewart , =?UTF-8?Q?Olivier_Cochard-Labb=c3=a9?= , freebsd-net@freebsd.org, Kurt Jaeger References: <20191104194637.GA71627@home.opsec.eu> <20191105191514.GG8521@funkthat.com> <261b842d-51eb-4522-6ef5-0672e5d1594e@grosbein.net> <20191107073255.GU8521@funkthat.com> From: Eugene Grosbein Message-ID: <54db0c82-ad44-13ed-8e1f-702557f331e5@grosbein.net> Date: Thu, 7 Nov 2019 14:48:31 +0700 User-Agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:45.0) Gecko/20100101 Thunderbird/45.8.0 MIME-Version: 1.0 In-Reply-To: <20191107073255.GU8521@funkthat.com> Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 8bit X-Spam-Status: No, score=0.3 required=5.0 tests=BAYES_00,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_PASS SPF: sender matches SPF record * 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record * 2.6 LOCAL_FROM From my domains X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on hz.grosbein.net X-Rspamd-Queue-Id: 477wWk4vVZz4Fpr 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)[-0.999,0]; FROM_HAS_DN(0.00)[]; RCPT_COUNT_THREE(0.00)[4]; TO_DN_SOME(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; MIME_GOOD(-0.10)[text/plain]; MIME_TRACE(0.00)[0:+]; DMARC_NA(0.00)[grosbein.net]; NEURAL_HAM_LONG(-1.00)[-1.000,0]; RCVD_COUNT_THREE(0.00)[3]; IP_SCORE(-1.56)[ip: (-3.88), ipnet: 2a01:4f8::/29(-2.24), asn: 24940(-1.69), country: DE(-0.01)]; R_SPF_PERMFAIL(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)[]; RCVD_TLS_ALL(0.00)[] 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: Thu, 07 Nov 2019 07:48:52 -0000 07.11.2019 14:32, John-Mark Gurney wrote: > Don't we have the option of doing soft re-classification? Where we > recalculate the hash, and then do a netisr defer? I mean that'd burn > a bunch of extra cpu cycles, but you gotta do what you gotta do. If the host got a packet already, it can just process it without extra re-classification. The only case I know when such re-classification can be useful is assigning M_FLOWID to the mbuf so that lagg(4) using LACP could send it further using such M_FLOWID and maybe distribute distinct IPsec flows over distinct ports of LAGG group. I doubt this has much practical use :-) Generally we terminate IPsec locally or route packets to other hosts without need to differ them from other transit traffic.