[{"id":1770566,"web_url":"http://patchwork.ozlabs.org/comment/1770566/","msgid":"<3549dc98-7309-2460-ad2c-69e17a550070@fb.com>","list_archive_url":null,"date":"2017-09-18T22:54:16","subject":"Re: [PATCH net-next 2/3] bpf: Add uniqueness invariant to trivial\n\tlpm test implementation","submitter":{"id":68234,"url":"http://patchwork.ozlabs.org/api/people/68234/","name":"Alexei Starovoitov","email":"ast@fb.com"},"content":"On 9/18/17 12:30 PM, Craig Gallek wrote:\n> From: Craig Gallek \n>\n> The 'trivial' lpm implementation in this test allows equivalent nodes\n> to be added (that is, nodes consisting of the same prefix and prefix\n> length). For lookup operations, this is fine because insertion happens\n> at the head of the (singly linked) list and the first, best match is\n> returned. In order to support deletion, the tlpm data structue must\n> first enforce uniqueness. This change modifies the insertion algorithm\n> to search for equivalent nodes and remove them. Note: the\n> BPF_MAP_TYPE_LPM_TRIE already has a uniqueness invariant that is\n> implemented as node replacement.\n>\n> Signed-off-by: Craig Gallek \n\nAcked-by: Alexei Starovoitov ","headers":{"Return-Path":"","X-Original-To":"patchwork-incoming@ozlabs.org","Delivered-To":"patchwork-incoming@ozlabs.org","Authentication-Results":["ozlabs.org;\n\tspf=none (mailfrom) smtp.mailfrom=vger.kernel.org\n\t(client-ip=209.132.180.67; helo=vger.kernel.org;\n\tenvelope-from=netdev-owner@vger.kernel.org;\n\treceiver=)","ozlabs.org; dkim=pass (1024-bit key;\n\tunprotected) header.d=fb.com header.i=@fb.com header.b=\"efRSFMF5\";\n\tdkim=fail reason=\"signature verification failed\" (1024-bit key;\n\tunprotected) header.d=fb.onmicrosoft.com header.i=@fb.onmicrosoft.com\n\theader.b=\"GELcDjl+\"; dkim-atps=neutral"],"Received":["from vger.kernel.org (vger.kernel.org [209.132.180.67])\n\tby ozlabs.org (Postfix) with ESMTP id 3xx1Xw4fMrz9s7M\n\tfor ;\n\tTue, 19 Sep 2017 08:54:40 +1000 (AEST)","(majordomo@vger.kernel.org) by vger.kernel.org via listexpand\n\tid S1751016AbdIRWyi (ORCPT );\n\tMon, 18 Sep 2017 18:54:38 -0400","from mx0a-00082601.pphosted.com ([67.231.145.42]:39485 \"EHLO\n\tmx0a-00082601.pphosted.com\" rhost-flags-OK-OK-OK-OK)\n\tby vger.kernel.org with ESMTP id S1750772AbdIRWyh (ORCPT\n\t); Mon, 18 Sep 2017 18:54:37 -0400","from pps.filterd (m0044012.ppops.net [127.0.0.1])\n\tby mx0a-00082601.pphosted.com (8.16.0.21/8.16.0.21) with SMTP id\n\tv8IMnxRd029938; Mon, 18 Sep 2017 15:54:23 -0700","from maileast.thefacebook.com ([199.201.65.23])\n\tby mx0a-00082601.pphosted.com with ESMTP id 2d2pwu82wm-1\n\t(version=TLSv1 cipher=ECDHE-RSA-AES256-SHA bits=256 verify=NOT);\n\tMon, 18 Sep 2017 15:54:23 -0700","from NAM01-BY2-obe.outbound.protection.outlook.com (192.168.183.28)\n\tby o365-in.thefacebook.com (192.168.177.34) with Microsoft SMTP\n\tServer (TLS) id 14.3.319.2; Mon, 18 Sep 2017 18:54:21 -0400","from [IPv6:2620:10d:c081:1131::119f] (2620:10d:c090:180::1:8838) by\n\tDM3PR15MB0972.namprd15.prod.outlook.com (2603:10b6:0:10::26) with\n\tMicrosoft SMTP Server (version=TLS1_2,\n\tcipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384_P256) id 15.20.56.11;\n\tMon, 18 Sep 2017 22:54:19 +0000"],"DKIM-Signature":["v=1; a=rsa-sha256; c=relaxed/relaxed; d=fb.com;\n\th=subject : to : references\n\t: cc : from : message-id : date : mime-version : in-reply-to :\n\tcontent-type : content-transfer-encoding; s=facebook;\n\tbh=QazHXGp9FGguBgEHm4jCg4FutwbhXzVo0GvSH7dd9VQ=;\n\tb=efRSFMF5MI2dg0rjhlJTL6McMIpWFvAWAuVGsujC8ESiVle7NsfSdaJjqG/mL4VHmlKP\n\thK8iHFIDnYpxpHnha8eyH690p/koGnUjpuId/2BtijIsoExvSKoDifxv7bb2YgBHr1xf\n\tvfcL9xzBZ+k47B0hJ30FwB/5x0VHJ66voFo= ","v=1; a=rsa-sha256; c=relaxed/relaxed; d=fb.onmicrosoft.com; \n\ts=selector1-fb-com;\n\th=From:Date:Subject:Message-ID:Content-Type:MIME-Version; \n\tbh=QazHXGp9FGguBgEHm4jCg4FutwbhXzVo0GvSH7dd9VQ=;\n\tb=GELcDjl+I2ii5XbaMd3U0QJpmVEsErWflEX5afYjlV/MSxunS9fIskQg5QM2oU47RCnyw0xy1B7n2jZPCXYUPjkurmaENasuORvGJByCfHq2BluzMH4z87Iw+zeroP8+mbshxQEhRRfkerC9cGlYMOabOR9eIFlMzGx32MA9eIw="],"Subject":"Re: [PATCH net-next 2/3] bpf: Add uniqueness invariant to trivial\n\tlpm test implementation","To":"Craig Gallek , Daniel Mack ,\n\tDaniel Borkmann ,\n\t\"David S . Miller\" ","References":"<20170918193057.37644-1-kraigatgoog@gmail.com>\n\t<20170918193057.37644-3-kraigatgoog@gmail.com>","CC":"","From":"Alexei Starovoitov ","Message-ID":"<3549dc98-7309-2460-ad2c-69e17a550070@fb.com>","Date":"Mon, 18 Sep 2017 15:54:16 -0700","User-Agent":"Mozilla/5.0 (Macintosh; Intel Mac OS X 10.12; rv:45.0)\n\tGecko/20100101 Thunderbird/45.8.0","MIME-Version":"1.0","In-Reply-To":"<20170918193057.37644-3-kraigatgoog@gmail.com>","Content-Type":"text/plain; charset=\"windows-1252\"; format=flowed","Content-Transfer-Encoding":"7bit","X-Originating-IP":"[2620:10d:c090:180::1:8838]","X-ClientProxiedBy":"MWHPR14CA0039.namprd14.prod.outlook.com\n\t(2603:10b6:300:12b::25) To DM3PR15MB0972.namprd15.prod.outlook.com\n\t(2603:10b6:0:10::26)","X-MS-PublicTrafficType":"Email","X-MS-Office365-Filtering-Correlation-Id":"951f3d09-dee0-4b78-d867-08d4fee832aa","X-Microsoft-Antispam":"UriScan:; BCL:0; PCL:0;\n\tRULEID:(300000500095)(300135000095)(300000501095)(300135300095)(22001)(300000502095)(300135100095)(2017030254152)(300000503095)(300135400095)(2017052603199)(201703131423075)(201703031133081)(201702281549075)(300000504095)(300135200095)(300000505095)(300135600095)(300000506095)(300135500095);\n\tSRVR:DM3PR15MB0972; 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SFP:1102; SCL:1; SRVR:DM3PR15MB0972;\n\tH:[IPv6:2620:10d:c081:1131::119f]; FPR:; SPF:None;\n\tPTR:InfoNoRecords; A:1; MX:1; LANG:en; ","Received-SPF":"None (protection.outlook.com: fb.com does not designate\n\tpermitted sender hosts)","SpamDiagnosticOutput":"1:99","SpamDiagnosticMetadata":"NSPM","X-MS-Exchange-CrossTenant-OriginalArrivalTime":"18 Sep 2017 22:54:19.6069\n\t(UTC)","X-MS-Exchange-CrossTenant-FromEntityHeader":"Hosted","X-MS-Exchange-CrossTenant-Id":"8ae927fe-1255-47a7-a2af-5f3a069daaa2","X-MS-Exchange-Transport-CrossTenantHeadersStamped":"DM3PR15MB0972","X-OriginatorOrg":"fb.com","X-Proofpoint-Spam-Reason":"safe","X-FB-Internal":"Safe","X-Proofpoint-Virus-Version":"vendor=fsecure engine=2.50.10432:, ,\n\tdefinitions=2017-09-18_10:, , signatures=0","Sender":"netdev-owner@vger.kernel.org","Precedence":"bulk","List-ID":"","X-Mailing-List":"netdev@vger.kernel.org"}},{"id":1771189,"web_url":"http://patchwork.ozlabs.org/comment/1771189/","msgid":"<59C141F2.10104@iogearbox.net>","list_archive_url":null,"date":"2017-09-19T16:12:34","subject":"Re: [PATCH net-next 2/3] bpf: Add uniqueness invariant to trivial\n\tlpm test implementation","submitter":{"id":65705,"url":"http://patchwork.ozlabs.org/api/people/65705/","name":"Daniel Borkmann","email":"daniel@iogearbox.net"},"content":"On 09/18/2017 09:30 PM, Craig Gallek wrote:\n> From: Craig Gallek \n>\n> The 'trivial' lpm implementation in this test allows equivalent nodes\n> to be added (that is, nodes consisting of the same prefix and prefix\n> length). For lookup operations, this is fine because insertion happens\n> at the head of the (singly linked) list and the first, best match is\n> returned. In order to support deletion, the tlpm data structue must\n> first enforce uniqueness. This change modifies the insertion algorithm\n> to search for equivalent nodes and remove them. Note: the\n> BPF_MAP_TYPE_LPM_TRIE already has a uniqueness invariant that is\n> implemented as node replacement.\n>\n> Signed-off-by: Craig Gallek \n\nAcked-by: Daniel Borkmann ","headers":{"Return-Path":"","X-Original-To":"patchwork-incoming@ozlabs.org","Delivered-To":"patchwork-incoming@ozlabs.org","Authentication-Results":"ozlabs.org;\n\tspf=none (mailfrom) smtp.mailfrom=vger.kernel.org\n\t(client-ip=209.132.180.67; helo=vger.kernel.org;\n\tenvelope-from=netdev-owner@vger.kernel.org;\n\treceiver=)","Received":["from vger.kernel.org (vger.kernel.org [209.132.180.67])\n\tby ozlabs.org (Postfix) with ESMTP id 3xxSZf1pTDz9rvt\n\tfor ;\n\tWed, 20 Sep 2017 02:12:42 +1000 (AEST)","(majordomo@vger.kernel.org) by vger.kernel.org via listexpand\n\tid S1751578AbdISQMk (ORCPT );\n\tTue, 19 Sep 2017 12:12:40 -0400","from www62.your-server.de ([213.133.104.62]:47143 \"EHLO\n\twww62.your-server.de\" rhost-flags-OK-OK-OK-OK) by vger.kernel.org\n\twith ESMTP id S1751396AbdISQMi (ORCPT\n\t); Tue, 19 Sep 2017 12:12:38 -0400","from [85.7.161.218] (helo=localhost.localdomain)\n\tby www62.your-server.de with esmtpsa (TLSv1.2:DHE-RSA-AES256-SHA:256)\n\t(Exim 4.85_2) (envelope-from )\n\tid 1duL8V-0006jO-GW; Tue, 19 Sep 2017 18:12:35 +0200"],"Message-ID":"<59C141F2.10104@iogearbox.net>","Date":"Tue, 19 Sep 2017 18:12:34 +0200","From":"Daniel Borkmann ","User-Agent":"Mozilla/5.0 (X11; Linux x86_64;\n\trv:31.0) Gecko/20100101 Thunderbird/31.7.0","MIME-Version":"1.0","To":"Craig Gallek , Daniel Mack ,\n\tAlexei Starovoitov , \"David S . Miller\" ","CC":"netdev@vger.kernel.org","Subject":"Re: [PATCH net-next 2/3] bpf: Add uniqueness invariant to trivial\n\tlpm test implementation","References":"<20170918193057.37644-1-kraigatgoog@gmail.com>\n\t<20170918193057.37644-3-kraigatgoog@gmail.com>","In-Reply-To":"<20170918193057.37644-3-kraigatgoog@gmail.com>","Content-Type":"text/plain; charset=windows-1252; format=flowed","Content-Transfer-Encoding":"7bit","X-Authenticated-Sender":"daniel@iogearbox.net","X-Virus-Scanned":"Clear (ClamAV 0.99.2/23853/Tue Sep 19 14:42:49 2017)","Sender":"netdev-owner@vger.kernel.org","Precedence":"bulk","List-ID":"","X-Mailing-List":"netdev@vger.kernel.org"}}]