Received: by 2002:a25:1985:0:0:0:0:0 with SMTP id 127csp603400ybz; Wed, 15 Apr 2020 14:59:03 -0700 (PDT) X-Google-Smtp-Source: APiQypK/oUOJYThAgsmJmozGXaPWRIWxoBKjw2d8byI3Hd8RUfMcGC3bZRi1C3Be04McS4z6vdej X-Received: by 2002:a05:6402:c0d:: with SMTP id co13mr25721232edb.266.1586987943488; Wed, 15 Apr 2020 14:59:03 -0700 (PDT) ARC-Seal: i=2; a=rsa-sha256; t=1586987943; cv=pass; d=google.com; s=arc-20160816; b=Q8I77RbAgpZvAuqohDIP90i4/NwRhAyAgcGte2qijt2vWggidWqXQ1G/NHk4TLls9b dwbpEegT+TQxX9OSg7vYI4QuMIV0EOBIR3Bl5H7WgL/IniW7DXhWb98mYW61sxDh4Bf+ 7wouGOmPINwJ4BM6LRbFMUbeSSCfGYlmhZMFmvoM3OW6+nE9saFyunySG54DVJh/4dHD 1sfMfyBAwoOaKxR5P9s41G/ROxjjSr6AJjxE8bUR64JGP2yLXHmcXsfN3o7UDJpn4h3f 9HpDsGpzxNjeG2iRRePur5AjdWT/OUOMOzbQkPuqw5Ru3aFnkiAejI2pX8xLFxhEzPxS Hw5g== ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:mime-version:content-transfer-encoding :content-id:content-language:accept-language:in-reply-to:references :message-id:date:thread-index:thread-topic:subject:cc:to:from :dkim-signature:dkim-signature; bh=V4R40Mll6F/xkP093C622+wH/QC3+c3rpIumWhtrvSE=; b=fDGQZL+f3PmiB5xP+tYLJhk56m3nz4k2Z2MSS97Hj6Y+MpT/Jw4dX+wo6uB0mMej4v i8SVd9P4ydWPevrLNKQkkA9SdNwZfo3EvD9tilok4aTmzXUrPtCsneKLYKZWBRKBUoYK 0955EJ/Ft5XGn+g7Q355mrtoGpdshJIouS3Qwd6X5wkgtjkR3x/3K2wdJJwB2vFqDLMH EWSiaZ3CF/qZioNqhs16+6gSDU1cchf5NJZAOkNgtuo8hESoMnNTnrREMDy7ku7w7zN+ C+uLTuqDta6J3SA0TjE7eDWCH/FPN6GRmA4jWYPxFXGUFt4gXwIGMMvJ3MJ0FsCzkLZL zHbw== ARC-Authentication-Results: i=2; mx.google.com; dkim=pass header.i=@fb.com header.s=facebook header.b=Buj43EDE; dkim=pass header.i=@fb.onmicrosoft.com header.s=selector2-fb-onmicrosoft-com header.b=S4Rj+ZY5; arc=pass (i=1 spf=pass spfdomain=fb.com dkim=pass dkdomain=fb.com dmarc=pass fromdomain=fb.com); spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=fb.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id f3si5097073edn.165.2020.04.15.14.58.40; Wed, 15 Apr 2020 14:59:03 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@fb.com header.s=facebook header.b=Buj43EDE; dkim=pass header.i=@fb.onmicrosoft.com header.s=selector2-fb-onmicrosoft-com header.b=S4Rj+ZY5; arc=pass (i=1 spf=pass spfdomain=fb.com dkim=pass dkdomain=fb.com dmarc=pass fromdomain=fb.com); spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=fb.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2407853AbgDNWGZ (ORCPT + 99 others); Tue, 14 Apr 2020 18:06:25 -0400 Received: from mx0b-00082601.pphosted.com ([67.231.153.30]:64474 "EHLO mx0b-00082601.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729934AbgDNWGT (ORCPT ); Tue, 14 Apr 2020 18:06:19 -0400 Received: from pps.filterd (m0148460.ppops.net [127.0.0.1]) by mx0a-00082601.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 03ELslYS020084; Tue, 14 Apr 2020 15:05:15 -0700 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=fb.com; h=from : to : cc : subject : date : message-id : references : in-reply-to : content-type : content-id : content-transfer-encoding : mime-version; s=facebook; bh=V4R40Mll6F/xkP093C622+wH/QC3+c3rpIumWhtrvSE=; b=Buj43EDE6OBJtN6W279FPtjG2+JQfeIJEUw+GrB/eoeQnCLPtwSQWOrkkbxZlWQ6TH5s Jc7LaqBW2cJBe//a5mqpefBVkX08BkPYxnczzZJR5n55VwrjdFAlG53B6wYz1LdJywzq AlgIWdW7AEdzyC8TdK9hFHyjVVGaFMGkgts= Received: from mail.thefacebook.com ([163.114.132.120]) by mx0a-00082601.pphosted.com with ESMTP id 30dn7q86bu-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT); Tue, 14 Apr 2020 15:05:15 -0700 Received: from NAM11-BN8-obe.outbound.protection.outlook.com (100.104.98.9) by o365-in.thefacebook.com (100.104.94.229) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1847.3; Tue, 14 Apr 2020 15:05:14 -0700 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=Jkqd5nbYqmGDH1kHQprLzlEjKF5CFe46lgfM5g3p+rb7HA2ZJhDvz72ZCXCxyHHLy3o4dEcpSdhBKFKueeh+BzHr4ULoZikW3wUhITP7p5N1iDv3n0oURSVFo9Brj8Yg5Q3jhrDMQd+0jy6JFqM4cjFFrEsAA9f1+c747boRyOnnTIUyI6nH5BjGYmXnhdYgYvQUOEkEccBzm5HBAfchvJWLk2+SAYjILUQKGaOSOVbYOWZxmSCzrCyzv1Bq0yZ9CYo9qU0XDHf98QwyXY4DDejsfTkhOx/7T/nkuRSF1tncqi5ihjDRIoT5yLUfa9YwLVTJi1gQOSXPSVgPlMmsLg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=V4R40Mll6F/xkP093C622+wH/QC3+c3rpIumWhtrvSE=; b=AnQTlr2p3AS5F3F8pP+c0WmuaVqb/gBJPIA2OpA+KMRkTFtfA3IMaT4WPPziZcZZwy5eL7G4jD4aUzI8ILFbl8+uZehilIVkjKt41Ylvatm8FO0ESR85X8PlrAhHjgyyOezo8aJkU/vu8s2qwhFkYgnwUo7DYmtnXasaTQW/xDw0AHpzrH+H4WR5uXlac15hakb5hBfYeO8Da+Z+SG69/Lz6ZBSxPEs5mw+SlD8flj4rmnKt5vQxKTgpJcT0oOQuwMFeD1xu39i4QGzcPKGfwljg6WZMcGKrlBDo7+LTGJqe8Jcz+KPwdC3hW5I8DIjWb/qi31H8Dtzb3rbxVfkIbg== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=fb.com; dmarc=pass action=none header.from=fb.com; dkim=pass header.d=fb.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=fb.onmicrosoft.com; s=selector2-fb-onmicrosoft-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=V4R40Mll6F/xkP093C622+wH/QC3+c3rpIumWhtrvSE=; b=S4Rj+ZY5gdst/QQoPuRNnoW6SO53Txqd7NKm5aKGwfEnKPZCj+3ltvWM33q9uMmx8E4vYJ8XSFOJXyeUhdzqX+GIhYuVWUi/c+f+xAq7c0pooCJ11j0mSbO99spCe6mcLIxziLs2H5BKQQ1NPQgmrqunskH4NIHONB+KsX+kunQ= Received: from BYAPR15MB2999.namprd15.prod.outlook.com (2603:10b6:a03:fa::12) by BYAPR15MB2455.namprd15.prod.outlook.com (2603:10b6:a02:90::19) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.2900.26; Tue, 14 Apr 2020 22:05:12 +0000 Received: from BYAPR15MB2999.namprd15.prod.outlook.com ([fe80::bdf1:da56:867d:f8a2]) by BYAPR15MB2999.namprd15.prod.outlook.com ([fe80::bdf1:da56:867d:f8a2%7]) with mapi id 15.20.2900.028; Tue, 14 Apr 2020 22:05:12 +0000 From: Song Liu To: Mao Wenan CC: Alexei Starovoitov , Daniel Borkmann , Martin Lau , Yonghong Song , Andrii Nakryiko , "john.fastabend@gmail.com" , "kpsingh@chromium.org" , "netdev@vger.kernel.org" , "bpf@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "kernel-janitors@vger.kernel.org" Subject: Re: [PATCH -next] bpf: remove set but not used variable 'dst_known' Thread-Topic: [PATCH -next] bpf: remove set but not used variable 'dst_known' Thread-Index: AQHWEYedD4qyQaRcJ0KQTxqzapbMNqh5LnoA Date: Tue, 14 Apr 2020 22:05:12 +0000 Message-ID: References: <20200413113703.194287-1-maowenan@huawei.com> In-Reply-To: <20200413113703.194287-1-maowenan@huawei.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-mailer: Apple Mail (2.3608.60.0.2.5) x-originating-ip: [2620:10d:c090:400::5:ba33] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: 03948f60-e2b6-4b6f-2202-08d7e0bfe7bd x-ms-traffictypediagnostic: BYAPR15MB2455: x-ms-exchange-transport-forked: True x-microsoft-antispam-prvs: x-fb-source: Internal x-ms-oob-tlc-oobclassifiers: OLM:117; x-forefront-prvs: 0373D94D15 x-forefront-antispam-report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:BYAPR15MB2999.namprd15.prod.outlook.com;PTR:;CAT:NONE;SFTY:;SFS:(10019020)(376002)(346002)(366004)(136003)(396003)(39860400002)(86362001)(2906002)(66476007)(66556008)(64756008)(66446008)(478600001)(316002)(71200400001)(36756003)(4744005)(76116006)(5660300002)(8676002)(8936002)(6512007)(66946007)(186003)(6486002)(6506007)(53546011)(81156014)(2616005)(4326008)(33656002)(6916009)(91956017)(54906003);DIR:OUT;SFP:1102; received-spf: None (protection.outlook.com: fb.com does not designate permitted sender hosts) x-ms-exchange-senderadcheck: 1 x-microsoft-antispam: BCL:0; x-microsoft-antispam-message-info: YGz+7FhgwD3SpCOFWrhOaroUMM3mgzqpBCzgPw2ygMNMspQtkC0Eba0src+0zCCTLKuuxRFkd9A/olhB6UBkZFLgS9YUdEeoRQ1aYVBOWoVO4jJkVNF5FiI1GihNeA1nC66rAYazEOaKIbwru0Tjfb+79POvVufCApdsQhWgmuv/t8NlipmTiX8qiWiKK31Ka9jItB466lRnrqednPwePzTAOomznuUnDQWGHfrbONtx7xJOwMqQfFNtnNvjOO57sbdSge/sj49QB/5/3t9Wb0aeatpX1bwXoOj/i9kiv+Udh/hiVlBD4WfjLHmRhPGA3jfP1qYIhRn03vZIwyFDiatQwXHAlB/Zx89Z61AlTydZGumpcW4bcnBGRssJrsvwVm0Rw8Gj6em4LMafltY3KLszRqE+8HwDCd40Ss1hlpnF4bJiHxbpHUARxN+k4JjR x-ms-exchange-antispam-messagedata: tE/zIW2qgYAKL880XiVWvLNfkQ7CV/0PEhVCCtZnmMpavM01bXqBGuvh1yKaNw0TfHaxeRylfTs3GI87o+Z+iVrJz4FUq1JShxLTQvJLUVfH5txyeEvfFrmsRmICG1XyGv7gfmtN4PnmbhpL27xHfnN2m++hpagRDbp41PQQq0q0hIdPHWhPg1q8JSxc0wWc Content-Type: text/plain; charset="utf-8" Content-ID: Content-Transfer-Encoding: base64 MIME-Version: 1.0 X-MS-Exchange-CrossTenant-Network-Message-Id: 03948f60-e2b6-4b6f-2202-08d7e0bfe7bd X-MS-Exchange-CrossTenant-originalarrivaltime: 14 Apr 2020 22:05:12.5702 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 8ae927fe-1255-47a7-a2af-5f3a069daaa2 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: yMb3J5CrKs38Y9NKbGsc5uNaqDd1J8xU/YoFJc2b+9R1tGagAbLM2FlWo3VpcrqfWr9ChSK9RXzKNJ8gellTfg== X-MS-Exchange-Transport-CrossTenantHeadersStamped: BYAPR15MB2455 X-OriginatorOrg: fb.com X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.138,18.0.676 definitions=2020-04-14_11:2020-04-14,2020-04-14 signatures=0 X-Proofpoint-Spam-Details: rule=fb_default_notspam policy=fb_default score=0 impostorscore=0 priorityscore=1501 spamscore=0 bulkscore=0 mlxscore=0 lowpriorityscore=0 suspectscore=0 clxscore=1011 adultscore=0 malwarescore=0 phishscore=0 mlxlogscore=999 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2003020000 definitions=main-2004140156 X-FB-Internal: deliver Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org DQoNCj4gT24gQXByIDEzLCAyMDIwLCBhdCA0OjM3IEFNLCBNYW8gV2VuYW4gPG1hb3dlbmFuQGh1 YXdlaS5jb20+IHdyb3RlOg0KPiANCj4gRml4ZXMgZ2NjICctV3VudXNlZC1idXQtc2V0LXZhcmlh YmxlJyB3YXJuaW5nOg0KPiANCj4ga2VybmVsL2JwZi92ZXJpZmllci5jOjU2MDM6MTg6IHdhcm5p bmc6IHZhcmlhYmxlIOKAmGRzdF9rbm93buKAmQ0KPiBzZXQgYnV0IG5vdCB1c2VkIFstV3VudXNl ZC1idXQtc2V0LXZhcmlhYmxlXQ0KPiANCj4gSXQgaXMgbm90IHVzZWQgc2luY2UgY29tbWl0IGYx MTc0Zjc3YjUwYyAoImJwZi92ZXJpZmllcjoNCj4gcmV3b3JrIHZhbHVlIHRyYWNraW5nIikNCg0K VGhlIGZpeCBtYWtlcyBzZW5zZS4gQnV0IEkgdGhpbmsgZjExNzRmNzdiNTBjIGludHJvZHVjZWQg ZHN0X2tub3duLCANCnNvIHRoaXMgc3RhdGVtZW50IGlzIG5vdCBhY2N1cmF0ZS4gDQoNCj4gDQo+ IFNpZ25lZC1vZmYtYnk6IE1hbyBXZW5hbiA8bWFvd2VuYW5AaHVhd2VpLmNvbT4NCg0K