From owner-freebsd-net@freebsd.org Sun Aug 25 20:40:43 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 778AFC2D35 for ; Sun, 25 Aug 2019 20:40:43 +0000 (UTC) (envelope-from bu7cher@yandex.ru) Received: from forward105o.mail.yandex.net (forward105o.mail.yandex.net [IPv6:2a02:6b8:0:1a2d::608]) (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 46Gn8T33tRz4RY7 for ; Sun, 25 Aug 2019 20:40:41 +0000 (UTC) (envelope-from bu7cher@yandex.ru) Received: from mxback3g.mail.yandex.net (mxback3g.mail.yandex.net [IPv6:2a02:6b8:0:1472:2741:0:8b7:164]) by forward105o.mail.yandex.net (Yandex) with ESMTP id 378064200C20; Sun, 25 Aug 2019 23:40:37 +0300 (MSK) Received: from smtp4j.mail.yandex.net (smtp4j.mail.yandex.net [2a02:6b8:0:1619::15:6]) by mxback3g.mail.yandex.net (nwsmtp/Yandex) with ESMTP id 0MWQeQ52et-ebAm2DPF; Sun, 25 Aug 2019 23:40:37 +0300 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yandex.ru; s=mail; t=1566765637; bh=p6MyJwxykuz4Kv6GTiXg/MNvPHMjMtEo0auiCkNiNBU=; h=In-Reply-To:From:Date:References:To:Subject:Message-ID; b=u/VZ1uaiw1BP/4KgoTw4PpA973JM46GSWgq7Vil3AyGVEezRdLZXDJr83PazC8X7U HIgUFfEo7TRy714BmRF0ZGGt3yEqnZKzXCHMSkqP5M7XMKE8uTFR0lcVBO8pnqEbni uYLZ5Vmp9yeO9TPn38ur/jNbGu2J/OFhfhBwoyuM= Received: by smtp4j.mail.yandex.net (nwsmtp/Yandex) with ESMTPSA id RhxOwIGNTM-eaQCHAvc; Sun, 25 Aug 2019 23:40:36 +0300 (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) (Client certificate not present) Subject: Re: finding optimal ipfw strategy To: Eugene Grosbein , Victor Gamov , freebsd-net@freebsd.org References: <4ff39c8f-341c-5d72-1b26-6558c57bff8d@grosbein.net> From: "Andrey V. Elsukov" Openpgp: id=E6591E1B41DA1516F0C9BC0001C5EA0410C8A17A Autocrypt: addr=bu7cher@yandex.ru; prefer-encrypt=mutual; keydata= mQENBEwBF1kBCADB9sXFhBEUy8qQ4X63Y8eBatYMHGEFWN9ypS5lI3RE6qQW2EYbxNk7qUC5 21YIIS1mMFVBEfvR7J9uc7yaYgFCEb6Sce1RSO4ULN2mRKGHP3/Sl0ijZEjWHV91hY1YTHEF ZW/0GYinDf56sYpDDehaBF5wkWIo1+QK5nmj3vl0DIDCMNd7QEiWpyLVwECgLX2eOAXByT8B bCqVhJGcG6iFP7/B9Ll6uX5gb8thM9LM+ibwErDBVDGiOgvfxqidab7fdkh893IBCXa82H9N CNwnEtcgzh+BSKK5BgvPohFMgRwjti37TSxwLu63QejRGbZWSz3OK3jMOoF63tCgn7FvABEB AAG0JUFuZHJleSBWLiBFbHN1a292IDxidTdjaGVyQHlhbmRleC5ydT6JATgEEwECACIFAkwB F1kCGwMGCwkIBwMCBhUIAgkKCwQWAgMBAh4BAheAAAoJEAHF6gQQyKF6qmYIAI6ekfm1VA4T vqankI1ISE6ku4jV7UlpIQlEbE7/8n3Zd6teJ+pGOQhN5qk8QE7utdPdbktAzi+x7LIJVzUw 4TywZLXGrkP7VKYkfg6oyCGyzITghefQeJtr2TN4hYCkzPWpylkue8MtmqfZv/6royqwTbN+ +E09FQNvTgRUYJYTeQ1qOsxNRycwvw3dr2rOfuxShbzaHBB1pBIjGrMg8fC5pd65ACH5zuFV A0CoTNGMDrEZSfBkTW604UUHFFXeCoC3dwDZRKOWJ3GmMXns65Ai5YkA63BSHEE1Qle3VBhd cG1w0CB5FBV3pB27UVnf0jEbysrDqW4qN7XMRFSWNAy5AQ0ETAEXWQEIAJ2p6l9LBoqdH/0J PEFDY2t2gTvAuzz+8zs3R03dFuHcNbOwjvWCG0aOmVpAzkRa8egn5JB4sZaFUtKPYJEQ1Iu+ LUBwgvtXf4vWpzC67zs2dDuiW4LamH5p6xkTD61aHR7mCB3bg2TUjrDWn2Jt44cvoYxj3dz4 S49U1rc9ZPgD5axCNv45j72tggWlZvpefThP7xT1OlNTUqye2gAwQravXpZkl5JG4eOqJVIU X316iE3qso0iXRUtO7OseBf0PiVmk+wCahdreHOeOxK5jMhYkPKVn7z1sZiB7W2H2TojbmcK HZC22sz7Z/H36Lhg1+/RCnGzdEcjGc8oFHXHCxUAEQEAAYkBHwQYAQIACQUCTAEXWQIbDAAK CRABxeoEEMihegkYCAC3ivGYNe2taNm/4Nx5GPdzuaAJGKWksV+w9mo7dQvU+NmI2az5w8vw 98OmX7G0OV9snxMW+6cyNqBrVFTu33VVNzz9pnqNCHxGvj5dL5ltP160JV2zw2bUwJBYsgYQ WfyJJIM7l3gv5ZS3DGqaGIm9gOK1ANxfrR5PgPzvI9VxDhlr2juEVMZYAqPLEJe+SSxbwLoz BcFCNdDAyXcaAzXsx/E02YWm1hIWNRxanAe7Vlg7OL+gvLpdtrYCMg28PNqKNyrQ87LQ49O9 50IIZDOtNFeR0FGucjcLPdS9PiEqCoH7/waJxWp6ydJ+g4OYRBYNM0EmMgy1N85JJrV1mi5i Message-ID: <270233d9-fcdb-fee9-2557-c2d1ec7bf9e6@yandex.ru> Date: Sun, 25 Aug 2019 23:37:34 +0300 User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:60.0) Gecko/20100101 Thunderbird/60.8.0 MIME-Version: 1.0 In-Reply-To: <4ff39c8f-341c-5d72-1b26-6558c57bff8d@grosbein.net> Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="jKgCVaeKqqox6f9YS6bpsYK19q6peySg8" X-Rspamd-Queue-Id: 46Gn8T33tRz4RY7 X-Spamd-Bar: ------ Authentication-Results: mx1.freebsd.org; dkim=pass header.d=yandex.ru header.s=mail header.b=u/VZ1uai; dmarc=pass (policy=none) header.from=yandex.ru; spf=pass (mx1.freebsd.org: domain of bu7cher@yandex.ru designates 2a02:6b8:0:1a2d::608 as permitted sender) smtp.mailfrom=bu7cher@yandex.ru X-Spamd-Result: default: False [-6.19 / 15.00]; TO_DN_SOME(0.00)[]; FREEMAIL_FROM(0.00)[yandex.ru]; R_SPF_ALLOW(-0.20)[+ip6:2a02:6b8:0:1000::/52]; HAS_ATTACHMENT(0.00)[]; RCVD_COUNT_THREE(0.00)[3]; DKIM_TRACE(0.00)[yandex.ru:+]; DMARC_POLICY_ALLOW(-0.50)[yandex.ru,none]; NEURAL_HAM_SHORT(-0.99)[-0.994,0]; SIGNED_PGP(-2.00)[]; FROM_EQ_ENVFROM(0.00)[]; MIME_TRACE(0.00)[0:+,1:+,2:+,3:~]; RCVD_TLS_LAST(0.00)[]; RCVD_IN_DNSWL_LOW(-0.10)[8.0.6.0.0.0.0.0.0.0.0.0.0.0.0.0.d.2.a.1.0.0.0.0.8.b.6.0.2.0.a.2.list.dnswl.org : 127.0.5.1]; ASN(0.00)[asn:13238, ipnet:2a02:6b8::/32, country:RU]; MID_RHS_MATCH_FROM(0.00)[]; DWL_DNSWL_NONE(0.00)[yandex.ru.dwl.dnswl.org : 127.0.5.0]; ARC_NA(0.00)[]; NEURAL_HAM_MEDIUM(-1.00)[-1.000,0]; R_DKIM_ALLOW(-0.20)[yandex.ru:s=mail]; FROM_HAS_DN(0.00)[]; RCPT_COUNT_THREE(0.00)[3]; NEURAL_HAM_LONG(-1.00)[-1.000,0]; MIME_GOOD(-0.20)[multipart/signed,multipart/mixed,text/plain]; IP_SCORE(0.00)[ip: (-9.76), ipnet: 2a02:6b8::/32(-4.63), asn: 13238(-3.72), country: RU(0.01)]; FREEMAIL_ENVFROM(0.00)[yandex.ru]; IP_SCORE_FREEMAIL(0.00)[]; TO_MATCH_ENVRCPT_SOME(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: Sun, 25 Aug 2019 20:40:43 -0000 This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --jKgCVaeKqqox6f9YS6bpsYK19q6peySg8 Content-Type: multipart/mixed; boundary="KAmcFqsaWyFSILrcG213ymcDo3vK5awES"; protected-headers="v1" From: "Andrey V. Elsukov" To: Eugene Grosbein , Victor Gamov , freebsd-net@freebsd.org Message-ID: <270233d9-fcdb-fee9-2557-c2d1ec7bf9e6@yandex.ru> Subject: Re: finding optimal ipfw strategy References: <4ff39c8f-341c-5d72-1b26-6558c57bff8d@grosbein.net> In-Reply-To: <4ff39c8f-341c-5d72-1b26-6558c57bff8d@grosbein.net> --KAmcFqsaWyFSILrcG213ymcDo3vK5awES Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: quoted-printable On 24.08.2019 22:34, Eugene Grosbein wrote: > If you are concerned of performance, general rule applies: less checks,= better performance. >=20 > First, use 'out xmit' instead of 'out via'. They are semantically equal= and this is micro-optimization > but it still saves extra check unneeded when combined with "out" keywor= d. >=20 > Also, you should use old table numbers instead of new symbolic table na= mes > when you have many rules checking for interface names and much traffic > because checks for numbered tables are slightly more efficient. > You may use symbolic names still at source level: There isn't any old tables, all tables have symbolic names. Even when you are creating "table(1)", its name is converted into symbolic name. --=20 WBR, Andrey V. 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