From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-0.8 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 282ADC43331 for ; Fri, 6 Sep 2019 23:21:22 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C835C2070C for ; Fri, 6 Sep 2019 23:21:21 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=fb.com header.i=@fb.com header.b="WJH86Yvj"; dkim=pass (1024-bit key) header.d=fb.onmicrosoft.com header.i=@fb.onmicrosoft.com header.b="WS0NLugM" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2391420AbfIFXVV (ORCPT ); Fri, 6 Sep 2019 19:21:21 -0400 Received: from mx0b-00082601.pphosted.com ([67.231.153.30]:39850 "EHLO mx0b-00082601.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732131AbfIFXVV (ORCPT ); Fri, 6 Sep 2019 19:21:21 -0400 Received: from pps.filterd (m0109331.ppops.net [127.0.0.1]) by mx0a-00082601.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id x86NIsfb024301; Fri, 6 Sep 2019 16:21:16 -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=Hw6hQPW4OP/D9tS1OUQA6A7G4+92qOdzh0f7fl8nFmY=; b=WJH86Yvj93F6ApRaeXAEejl+wGZfD4s+zFDd2JG5j1zHt0kHlJTGxDqup10GXBrx/XOj II1LG6OU0Spn4zcTsC1KwTIohiVQWANmDh6FdLjht8cw6JJ264fB1KfbFiUbFjgNUmAf gFMXLVP8bImOs1h4iI1KWpLYxzMbUgnAD2E= Received: from maileast.thefacebook.com ([163.114.130.16]) by mx0a-00082601.pphosted.com with ESMTP id 2uusepjcet-2 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT); Fri, 06 Sep 2019 16:21:16 -0700 Received: from ash-exhub202.TheFacebook.com (2620:10d:c0a8:83::6) by ash-exhub104.TheFacebook.com (2620:10d:c0a8:82::d) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1713.5; Fri, 6 Sep 2019 16:21:15 -0700 Received: from NAM02-SN1-obe.outbound.protection.outlook.com (100.104.31.183) by o365-in.thefacebook.com (100.104.36.103) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1713.5 via Frontend Transport; Fri, 6 Sep 2019 16:21:15 -0700 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=Ywo/p+9wI/PINKDdZ4eNUqv77qEY2ZAH6kBm0gpVN2kg8hNSdAFtoOUObbRNwiTSEQR4M4KxRHC03NbRts/FV1NBS3/94JG97L0km8GiqBogC/ir7yG06eKWpDyt0wdJ9xZQ0lse5b/hthGMk1Hpo2t3M8EK8VUTKKGuSa7jLv4Pl/75CoPNsORXI0GXZnwOr32KyWB+2VGmGBl5qYPt/DmyeYZnLgk9/mQtY82cSaK81+fgIxVBWEvIKBvERGk/o+jdilLYXQVSgyLqhmoxHGa9ikJsw0yCUAgPZQwuo6zxsN+LdiyZvxMimZoDvYk/LY8cMinQRTMGfBg3NEUZ+g== 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=Hw6hQPW4OP/D9tS1OUQA6A7G4+92qOdzh0f7fl8nFmY=; b=bDkGXuUKnTu60nNHK3IqUE32gD/nZPHrH6Wgb2mv9ROaQVQGFj/P7fjuUH+XD3ie47bgSszSntyCo6ca1GWL0r0XU/gyAS7jVYqG8dpWTk9rDzFRStmFfmRs3BGfBW2raXdW6fJLkyS0ba7+QslHtghoahTnQVmKzLmvEHa/Un3tuZ7EjUUInOxucbRgPTMglb27ytD1e5o5JK1dNdY0di3sUkKTCZMYSBbLaPR5c2uU4pBCFEmYKNHPQrNnYfNDeD52xHiQtuZepa6p4njtoLt1g5EMRuqZ4k3viqKXsf21CcQEhw2udNlNbawWLOSsKEloqJYrvJicr2nqWNyDPA== 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=Hw6hQPW4OP/D9tS1OUQA6A7G4+92qOdzh0f7fl8nFmY=; b=WS0NLugMY6VV2EPeZTOflx1admmFqfyRpxxNGJN4V0TjgGWY5lHbkpUfLi2ltr8ocBtCu4a2nRWi7hlRVjbAsqO1qK0nA5PrTtOCoRUyp5xK3KFqXegqEVx0DzQEGV4jd4BXl4HhUdZrjPOgpLBWu2DuXTx0f97brihtstBydb0= Received: from BYAPR15MB3384.namprd15.prod.outlook.com (20.179.60.27) by BYAPR15MB3032.namprd15.prod.outlook.com (20.178.238.93) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.2241.14; Fri, 6 Sep 2019 23:21:14 +0000 Received: from BYAPR15MB3384.namprd15.prod.outlook.com ([fe80::95ab:61a0:29f4:e07e]) by BYAPR15MB3384.namprd15.prod.outlook.com ([fe80::95ab:61a0:29f4:e07e%6]) with mapi id 15.20.2241.014; Fri, 6 Sep 2019 23:21:14 +0000 From: Yonghong Song To: Al Viro , Carlos Neira CC: "netdev@vger.kernel.org" , "ebiederm@xmission.com" , "brouer@redhat.com" , "bpf@vger.kernel.org" Subject: Re: [PATCH bpf-next v10 2/4] bpf: new helper to obtain namespace data from current task New bpf helper bpf_get_current_pidns_info. Thread-Topic: [PATCH bpf-next v10 2/4] bpf: new helper to obtain namespace data from current task New bpf helper bpf_get_current_pidns_info. Thread-Index: AQHVZQnGeSoLbPhhakeR04Y7iQ7xbQ== Date: Fri, 6 Sep 2019 23:21:14 +0000 Message-ID: References: <20190906150952.23066-1-cneirabustos@gmail.com> <20190906150952.23066-3-cneirabustos@gmail.com> <20190906152435.GW1131@ZenIV.linux.org.uk> <20190906154647.GA19707@ZenIV.linux.org.uk> <20190906160020.GX1131@ZenIV.linux.org.uk> In-Reply-To: <20190906160020.GX1131@ZenIV.linux.org.uk> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-clientproxiedby: MWHPR20CA0046.namprd20.prod.outlook.com (2603:10b6:300:ed::32) To BYAPR15MB3384.namprd15.prod.outlook.com (2603:10b6:a03:112::27) x-ms-exchange-messagesentrepresentingtype: 1 x-originating-ip: [2620:10d:c090:200::2:810] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: c33520fb-971e-403d-9b80-08d73320e952 x-microsoft-antispam: BCL:0;PCL:0;RULEID:(2390118)(7020095)(4652040)(8989299)(4534185)(4627221)(201703031133081)(201702281549075)(8990200)(5600166)(711020)(4605104)(1401327)(2017052603328)(7193020);SRVR:BYAPR15MB3032; x-ms-traffictypediagnostic: BYAPR15MB3032: x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:5797; x-forefront-prvs: 0152EBA40F x-forefront-antispam-report: SFV:NSPM;SFS:(10019020)(396003)(376002)(346002)(39860400002)(136003)(366004)(199004)(189003)(46003)(76176011)(486006)(66946007)(66476007)(66556008)(66446008)(99286004)(6116002)(14454004)(86362001)(305945005)(2906002)(31686004)(64756008)(8936002)(81156014)(81166006)(478600001)(7736002)(31696002)(8676002)(4326008)(6436002)(25786009)(53546011)(5660300002)(102836004)(186003)(6246003)(110136005)(6506007)(54906003)(386003)(256004)(446003)(2616005)(14444005)(11346002)(52116002)(71200400001)(6486002)(71190400001)(229853002)(6512007)(316002)(36756003)(53936002)(476003);DIR:OUT;SFP:1102;SCL:1;SRVR:BYAPR15MB3032;H:BYAPR15MB3384.namprd15.prod.outlook.com;FPR:;SPF:None;LANG:en;PTR:InfoNoRecords;A:1;MX:1; received-spf: None (protection.outlook.com: fb.com does not designate permitted sender hosts) x-ms-exchange-senderadcheck: 1 x-microsoft-antispam-message-info: mb5P/dzp6F7267MFDdO7xulabYqLZemPY1t01F5IUenq38PIP4i5m7irkBZ7F8YG4jSho4fFOdDjlvqZy/dJx1DA86KprgDUWPVfQh5BRBAJiChpUzKMny+QrmdFFTFJnqtDfy1ZRhoGfmzxY3THvF1Myuhqd0BocKiURSkR0KzaT9R5TuFu3rptBibf3tD0E1VmRtzDmluKbt3mAZVmjsvkgA+ERNFC3KEHM6DXUah0H2Ok4PBfV2RH5ji041SCaSeouGoSO57YN5JD5/s4dp6p9z+azMpreIpCNIRd4Mya877Dr+PGQ3sV8vi8QZXNPlw56lRozNEck3ToRJGhS7zZLPrirziXeQsjdi9G2uESA+rhZEd5mUaoO1Y8gVTeYPVwxpJxsMX81DhEH5mXw65oqJQsKmRXsWQqKhvJtK4= x-ms-exchange-transport-forked: True Content-Type: text/plain; charset="utf-8" Content-ID: <12D7324D6D689043BDAE05BE8BD5A6E3@namprd15.prod.outlook.com> Content-Transfer-Encoding: base64 MIME-Version: 1.0 X-MS-Exchange-CrossTenant-Network-Message-Id: c33520fb-971e-403d-9b80-08d73320e952 X-MS-Exchange-CrossTenant-originalarrivaltime: 06 Sep 2019 23:21:14.6417 (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: /mYuiKKiWNaJZbJuYIfs0algPtL4F6TwJ8aOFq5N5xK/3irh5eNS1PJG54bxRfKW X-MS-Exchange-Transport-CrossTenantHeadersStamped: BYAPR15MB3032 X-OriginatorOrg: fb.com X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.70,1.0.8 definitions=2019-09-06_11:2019-09-04,2019-09-06 signatures=0 X-Proofpoint-Spam-Details: rule=fb_default_notspam policy=fb_default score=0 mlxscore=0 clxscore=1011 bulkscore=0 impostorscore=0 suspectscore=0 mlxlogscore=999 priorityscore=1501 phishscore=0 lowpriorityscore=0 malwarescore=0 spamscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-1906280000 definitions=main-1909060226 X-FB-Internal: deliver Sender: bpf-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org DQoNCk9uIDkvNi8xOSA5OjAwIEFNLCBBbCBWaXJvIHdyb3RlOg0KPiBPbiBGcmksIFNlcCAwNiwg MjAxOSBhdCAwNDo0Njo0N1BNICswMTAwLCBBbCBWaXJvIHdyb3RlOg0KPiANCj4+PiBXaGVyZSBk byBJIGJlZ2luPw0KPj4+IAkqIGdldG5hbWVfa2VybmVsKCkgaXMgdGhlcmUgZm9yIHB1cnBvc2UN Cj4+PiAJKiBzbydzIGtlcm5fcGF0aCgpLCBkYW1uaXQNCj4+DQo+PiBPaCwgYW5kIGZpbGVuYW1l X2xvb2t1cCgpICpDQU4qIHNsZWVwLCBvYnZpb3VzbHkuICBTbyB0aGF0DQo+PiBHRlBfQVRPTUlD IGFib3ZlIGlzIGNvbXBsZXRlbHkgcG9pbnRsZXNzLg0KPj4NCj4+Pj4gKw0KPj4+PiArCWlub2Rl ID0gZF9iYWNraW5nX2lub2RlKGtwLmRlbnRyeSk7DQo+Pj4+ICsJcGlkbnNfaW5mby0+ZGV2ID0g KHUzMilpbm9kZS0+aV9yZGV2Ow0KPiANCj4gSW4gdGhlIG9yaWdpbmFsIHZhcmlhbnQgb2YgcGF0 Y2hzZXQgaXQgdXNlZCB0byBiZSAtPmlfc2ItPnNfZGV2LA0KPiB3aGljaCBpcyBhbHNvIGJsb29k eSBzdHJhbmdlIC0geW91IGFyZSBub3QgYXNraW5nIGZpbGVuYW1lX2xvb2t1cCgpDQo+IHRvIGZv bGxvdyBzeW1saW5rcywgc28geW91J2QgZ2V0IHRoYXQgb2Ygd2hhdGV2ZXIgZmlsZXN5c3RlbQ0K PiAvcHJvYy9zZWxmL25zIHJlc2lkZXMgb24uDQo+IA0KPiAtPmlfcmRldiB1c2UgbWFrZXMgbm8g c2Vuc2Ugd2hhdHNvZXZlciAtIGl0J3MgYSBzeW1saW5rIGFuZA0KPiBuZWl0aGVyIGl0IG5vciBp dHMgdGFyZ2V0IGFyZSBkZXZpY2Ugbm9kZXM7IC0+aV9yZGV2IHdpbGwgYmUNCj4gbGVmdCB6ZXJv IGZvciBib3RoLg0KPiANCj4gV2hhdCBkYXRhIGFyZSB5b3UgcmVhbGx5IHRyeWluZyB0byBnZXQg dGhlcmU/DQoNCkxldCBtZSBleHBsYWluIGEgbGl0dGxlIGJpdCBiYWNrZ3JvdW5kIGhlcmUuDQpU aGUgdWx0aW1hdGUgZ29hbCBpcyBmb3IgYnBmIHByb2dyYW0gdG8gZmlsdGVyIG92ZXINCihwaWRf bmFtZXNwYWNlLCB0Z2lkL3BpZCBpbnNpZGUgcGlkX25hbWVzcGFjZSkNCnNvIGJwZiBiYXNlZCB0 b29scyBjYW4gcnVuIGluc2lkZSB0aGUgY29udGFpbmVyLg0KDQpUeXBpY2FsbHksIHBpZCBuYW1l c3BhY2UgaXMgYWNoaWV2ZWQgYnkgbG9va2luZyBhdA0KL3Byb2Mvc2VsZi9ucy9waWQ6DQotYmFz aC00LjQkIGxzbnMNCiAgICAgICAgIE5TIFRZUEUgICBOUFJPQ1MgICBQSUQgVVNFUiBDT01NQU5E DQo0MDI2NTMxODM1IGNncm91cCAgICAgNDQgIDgyNjEgeWhzICAvdXNyL2xpYi9zeXN0ZW1kL3N5 c3RlbWQgLS11c2VyDQo0MDI2NTMxODM2IHBpZCAgICAgICAgNDQgIDgyNjEgeWhzICAvdXNyL2xp Yi9zeXN0ZW1kL3N5c3RlbWQgLS11c2VyDQo0MDI2NTMxODM3IHVzZXIgICAgICAgNDQgIDgyNjEg eWhzICAvdXNyL2xpYi9zeXN0ZW1kL3N5c3RlbWQgLS11c2VyDQo0MDI2NTMxODM4IHV0cyAgICAg ICAgNDQgIDgyNjEgeWhzICAvdXNyL2xpYi9zeXN0ZW1kL3N5c3RlbWQgLS11c2VyDQo0MDI2NTMx ODM5IGlwYyAgICAgICAgNDQgIDgyNjEgeWhzICAvdXNyL2xpYi9zeXN0ZW1kL3N5c3RlbWQgLS11 c2VyDQo0MDI2NTMxODQwIG1udCAgICAgICAgNDQgIDgyNjEgeWhzICAvdXNyL2xpYi9zeXN0ZW1k L3N5c3RlbWQgLS11c2VyDQo0MDI2NTMyMDA4IG5ldCAgICAgICAgNDQgIDgyNjEgeWhzICAvdXNy L2xpYi9zeXN0ZW1kL3N5c3RlbWQgLS11c2VyDQotYmFzaC00LjQkIHJlYWRsaW5rIC9wcm9jL3Nl bGYvbnMvcGlkDQpwaWQ6WzQwMjY1MzE4MzZdDQotYmFzaC00LjQkIHN0YXQgL3Byb2Mvc2VsZi9u cy9waWQNCiAgIEZpbGU6IOKAmC9wcm9jL3NlbGYvbnMvcGlk4oCZIC0+IOKAmHBpZDpbNDAyNjUz MTgzNl3igJkNCiAgIFNpemU6IDAgICAgICAgICAgICAgICBCbG9ja3M6IDAgICAgICAgICAgSU8g QmxvY2s6IDEwMjQgICBzeW1ib2xpYyBsaW5rDQpEZXZpY2U6IDRoLzRkICAgSW5vZGU6IDM0NDc5 NTk4OSAgIExpbmtzOiAxDQpBY2Nlc3M6ICgwNzc3L2xyd3hyd3hyd3gpICBVaWQ6ICgxMjgyMDMv ICAgICB5aHMpICAgR2lkOiAoICAxMDAvICAgdXNlcnMpDQpDb250ZXh0OiB1c2VyX3U6YmFzZV9y OmJhc2VfdA0KQWNjZXNzOiAyMDE5LTA5LTA2IDE2OjA2OjA5LjQzMTYxNjM4MCAtMDcwMA0KTW9k aWZ5OiAyMDE5LTA5LTA2IDE2OjA2OjA5LjQzMTYxNjM4MCAtMDcwMA0KQ2hhbmdlOiAyMDE5LTA5 LTA2IDE2OjA2OjA5LjQzMTYxNjM4MCAtMDcwMA0KICBCaXJ0aDogLQ0KLWJhc2gtNC40JA0KDQpC YXNlZCBvbiBhIGRpc2N1c3Npb24gd2l0aCBFcmljIEJpZWRlcm1hbiBiYWNrIGluIDIwMTkgTGlu dXgNClBsdW1iZXJzLCBFcmljIHN1Z2dlc3RlZCB0aGF0IHRvIHVuaXF1ZWx5IGlkZW50aWZ5IGEN Cm5hbWVzcGFjZSwgZGV2aWNlIGlkIChtYWpvci9taW5vcikgbnVtYmVyIHNob3VsZCBhbHNvDQpi ZSBpbmNsdWRlZC4gQWx0aG91Z2ggdG9kYXkncyBrZXJuZWwgaW1wbGVtZW50YXRpb24NCmhhcyB0 aGUgc2FtZSBkZXZpY2UgZm9yIGFsbCBuYW1lc3BhY2UgcHNldWRvIGZpbGVzLA0KYnV0IGZyb20g dWFwaSBwZXJzcGVjdGl2ZSwgZGV2aWNlIGlkIHNob3VsZCBiZSBpbmNsdWRlZC4NCg0KVGhhdCBp cyB0aGUgcmVhc29uIHdoeSB3ZSB0cnkgdG8gZ2V0IGRldmljZSBpZCB3aGljaCBob2xkcw0KcGlk IG5hbWVzcGFjZSBwc2V1ZG8gZmlsZS4NCg0KRG8geW91IGhhdmUgYSBiZXR0ZXIgc3VnZ2VzdGlv biBvbiBob3cgdG8gZ2V0DQp0aGUgZGV2aWNlIGlkIGZvciAnY3VycmVudCcgcGlkIG5hbWVzcGFj ZT8gT3IgZnJvbSBkZXNpZ24sIHdlDQpyZWFsbHkgc2hvdWxkIG5vdCBjYXJlIGFib3V0IGRldmlj ZSBpZCBhdCBhbGw/DQo=