From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Waskiewicz Jr, Peter" Subject: Re: [RFC bpf-next 2/6] net: xdp: RX meta data infrastructure Date: Fri, 6 Jul 2018 20:44:24 +0000 Message-ID: <1530909863.4291.12.camel@intel.com> References: <20180627024615.17856-1-saeedm@mellanox.com> <20180627024615.17856-3-saeedm@mellanox.com> <20180703230137.hdoy2fujz3x4oeij@ast-mbp.dhcp.thefacebook.com> <13f973a9937834ae8c10bfcc7d90909e94c543f1.camel@mellanox.com> <65b964eb-9ee1-9fd8-d54a-9290377eb1e4@iogearbox.net> <20180705101800.3c5d6af0@cakuba.netronome.com> <20180706163041.xstyfednmgho23m3@ast-mbp.dhcp.thefacebook.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Cc: "Duyck, Alexander H" , "daniel@iogearbox.net" , "saeedm@mellanox.com" , "brouer@redhat.com" , "borkmann@iogearbox.net" , "tariqt@mellanox.com" , "john.fastabend@gmail.com" , "netdev@vger.kernel.org" , "saeedm@dev.mellanox.co.il" To: "alexei.starovoitov@gmail.com" , "jakub.kicinski@netronome.com" Return-path: Received: from mga02.intel.com ([134.134.136.20]:26959 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932884AbeGFUo0 (ORCPT ); Fri, 6 Jul 2018 16:44:26 -0400 In-Reply-To: <20180706163041.xstyfednmgho23m3@ast-mbp.dhcp.thefacebook.com> Content-Language: en-US Content-ID: <29CA548C219291438D2A636AB1BAD461@intel.com> Sender: netdev-owner@vger.kernel.org List-ID: T24gRnJpLCAyMDE4LTA3LTA2IGF0IDA5OjMwIC0wNzAwLCBBbGV4ZWkgU3Rhcm92b2l0b3Ygd3Jv dGU6DQo+IE9uIFRodSwgSnVsIDA1LCAyMDE4IGF0IDEwOjE4OjIzQU0gLTA3MDAsIEpha3ViIEtp Y2luc2tpIHdyb3RlOg0KPiA+IA0KPiA+IEknbSBhbHNvIG5vdCAxMDAlIG9uIGJvYXJkIHdpdGgg dGhlIGFyZ3VtZW50IHRoYXQgImZ1dHVyZSIgRlcgY2FuDQo+ID4gcmVzaHVmZmxlIHRoaW5ncyB3 aGF0ZXZlciB3YXkgaXQgd2FudHMgdG8uICBJcyB0aGUgYXNzdW1wdGlvbiB0aGF0DQo+ID4gZnV0 dXJlIEFTSUNzL0ZXIHdpbGwgYmUgZGVzaWduZWQgdG8gYWx3YXlzIHVzZSB0aGUgImJsZXNzZWQi IEJURg0KPiA+IGZvcm1hdD8gIE9yIHdpbGwgaXQgYmUgcmVjb25maWd1cmFibGUgYXQgcnVudGlt ZT8NCj4gDQo+IGxldCdzIHRhYmxlIGNvbmZpZ3VyYXRpb24gb2YgbWV0YWRhdGEgYXNpZGUgZm9y IGEgc2Vjb25kLg0KDQpJIGFncmVlIHRoYXQgdGhpcyBzaG91bGQvY291bGQgYmUgTklDLXNwZWNp ZmljIGFuZCBzaG91bGRuJ3Qgd2VpZ2ggb24NCnRoZSBtZXRhZGF0YSBpbnRlcmZhY2UgYmV0d2Vl biB0aGUgZHJpdmVycyBhbmQgWERQIGxheWVyLg0KDQo+IERlc2NyaWJpbmcgbWV0ZWRhdGEgbGF5 b3V0IGluIEJURiBhbGxvd3MgTklDcyB0byBkaXNjbG9zZSBldmVyeXRoaW5nDQo+IE5JQyBoYXMg dG8gdXNlcnMgaW4gYSBzdGFuZGFyZCBhbmQgZ2VuZXJpYyB3YXkuDQo+IFdoZXRoZXIgZmlybXdh cmUgaXMgcmVjb25maWd1cmFibGUgb24gdGhlIGZseSBvciBoYXMgdG8gcmVmbGFzaGVkDQo+IGFu ZCBodyBwb3dlcmN5Y2xlZCB0byBoYXZlIG5ldyBtZCBsYXlvdXQgKGFuZCBjb3JyZXNwb25kaW5n IEJURg0KPiBkZXNjcmlwdGlvbikNCj4gaXMgYSBzZXBhcmF0ZSBkaXNjdXNzaW9uLg0KPiBTYWVl ZCdzIHByb3Bvc2FsIGludHJvZHVjZXMgdGhlIGNvbmNlcHQgb2YgJ29mZnNldCcgaW5zaWRlICdz dHJ1Y3QNCj4geGRwX21kX2luZm8nDQo+IHRvIHJlYWNoICdoYXNoJyB2YWx1ZSBpbiBtZXRhZGF0 YS4NCj4gRXNzZW50aWFsbHkgaXQncyBhIHJ1bi10aW1lIHdheSB0byBhY2Nlc3MgJ2hhc2gnIGlu c3RlYWQgb2YgYnVpbGQtDQo+IHRpbWUuDQo+IFNvIGJwZiBwcm9ncmFtIHdvdWxkIG5lZWQgdHdv IGxvYWRzIHRvIHJlYWQgY3N1bSBvciBoYXNoIGZpZWxkDQo+IGluc3RlYWQgb2Ygb25lLg0KPiBX aXRoIEJURiB0aGUgbGF5b3V0IG9mIG1ldGFkYXRhIGlzIGtub3duIHRvIHRoZSBwcm9ncmFtIGF0 IGJ1aWxkLQ0KPiB0aW1lLg0KPiANCj4gVG8gcmVpdGVyYXRlIHRoZSBwcm9wb3NhbDoNCj4gLSBk cml2ZXIrZmlybXdhcmUga2VlcCBsYXlvdXQgb2YgdGhlIG1ldGFkYXRhIGluIEJURiBmb3JtYXQg KGVpdGhlcg0KPiBpbiB0aGUgZHJpdmVyDQo+ICAgb3IgZHJpdmVyIGNhbiByZWFkIGl0IGZyb20g ZmlybXdhcmUpDQo+IC0gJ2JwZnRvb2wgcmVhZC1tZXRhZGF0YS1kZXNjIGV0aDAgPiBtZF9kZXNj LmgnIGNvbW1hbmQgd2lsbCBxdWVyeQ0KPiB0aGUgZHJpdmVyIGFuZA0KPiAgIGdlbmVyYXRlIG5v cm1hbCBDIGhlYWRlciBmaWxlIGJhc2VkIG9uIEJURiBpbiB0aGUgZ2l2ZW4gTklDDQo+IC0gdXNl ciBkb2VzICNpbmNsdWRlICJtZF9kZXNjLmgiIGFuZCBicGYgcHJvZ3JhbSBjYW4gYWNjZXNzIG1k LT5jc3VtDQo+IG9yIG1kLT5oYXNoDQo+ICAgd2l0aCBkaXJlY3Qgc2luZ2xlIGxvYWQgb3V0IG9m IG1ldGFkYXRhIGFyZWEgaW4gZnJvbnQgb2YgdGhlIHBhY2tldA0KDQpUaGlzIHBpZWNlIGlzIHdo ZXJlIEknZCBsaWtlIHRvIGRpc2N1c3MgbW9yZS4gIFdoZW4gd2UgZGlzY3Vzc2VkIHRoaXMNCmlu IFNlb3VsLCB0aGUgaW5pdGlhbCBwcm9wb3NhbCB3YXMgYSBzdGF0aWMgc3RydWN0IHRoYXQgd2Un ZCB0cnkgdG8NCmhhbW1lciBvdXQgYSBjb21tb24gbGF5b3V0IGJldHdlZW4gdGhlIGludGVyZXN0 ZWQgcGFydGllcy4gIFRoYXQNCm9idmlvdXNseSB3YXNuJ3QgZ29pbmcgdG8gc2NhbGUsIGFuZCB3 ZSB3YW50ZWQgdG8gcHVyc3VlIHNvbWV0aGluZyBtb3JlDQpkeW5hbWljLiAgQnV0IEkgdGhvdWdo dCB0aGUgZ29hbCB3YXMgdGhlIFhEUC9lQlBGIHByb2dyYW0gd291bGRuJ3Qgd2FudA0KdG8gY2Fy ZSB3aGF0IHRoZSB1bmRlcmx5aW5nIGRldmljZSBpcywgYW5kIGNvdWxkIGp1c3QgYXNrIGZvciBt ZXRhZGF0YQ0KdGhhdCBpdCdzIGludGVyZXN0ZWQgaW4uICBXaXRoIHRoaXMgYXBwcm9hY2gsIHlv dXIgZUJQRiBwcm9ncmFtIGlzIG5vdw0KYm91bmQvdGllZCB0byB0aGUgTklDL2RyaXZlciwgYW5k IGlmIHlvdSBzd2l0Y2hlZCB0byBhIGRpZmZlcmVuDQpOSUMvZHJpdmVyIGNvbWJvLCB0aGVuIHlv dSdkIGhhdmUgdG8gcmV3cml0ZSBwYXJ0IG9mIHlvdXIgZUJQRiBwcm9ncmFtDQp0byBjb21wcmVo ZW5kIHRoYXQuICBJIHRob3VnaHQgd2Ugd2VyZSB0cnlpbmcgdG8gYXZvaWQgdGhhdC4NCg0KT3Vy IHByb3Bvc2VkIGFwcHJvYWNoIChzdGlsbCB3b3JraW5nIG9uIHNvbWV0aGluZyByZWFkeSB0byBS RkMpIGlzIHRvDQpwcm92aWRlIGEgbWV0aG9kIGZvciB0aGUgZUJQRiBwcm9ncmFtIHRvIHNlbmQg YSBzdHJ1Y3Qgb2YgcmVxdWVzdGVkDQpoaW50cyBkb3duIHRvIHRoZSBkcml2ZXIgb24gbG9hZC4g IElmIHRoZSBkcml2ZXIgY2FuIHByb3ZpZGUgdGhlIGhpbnRzLA0KdGhlbiB0aGF0J2QgYmUgaG93 IHRoZXknZCBiZSBsYWlkIG91dCBpbiB0aGUgbWV0YWRhdGEuICBJZiBpdCBjYW4ndA0KcHJvdmlk ZSB0aGVtLCB3ZSdkIHByb2JhYmx5IHJlamVjdCB0aGUgcHJvZ3JhbSBsb2FkaW5nLCBvciBkaXNj dXNzDQpwcm92aWRpbmcgYSBzb2Z0d2FyZSBmYWxsYmFjayAoSSBrbm93IHRoaXMgaXMgYW4gYXJl YSBvZiBjb250ZW50aW9uKS4NCg0KSSBzdXBwb3NlIHdlIGNvdWxkIGdldCB0aGVyZSB3aXRoIHRo ZSByZXdyaXRpbmcgbWVjaGFuaXNtIGRlc2NyaWJlZA0KYmVsb3csIGJ1dCB0aGF0J2QgYmUgYSB0 b3VnaCBzZWxsIHRvIHNldCBhIGJpdCBvZiBBQkkgZm9yIG1ldGFkYXRhLA0KdGhlbiBjaGFuZ2Ug aXQgdG8gYmUgcG90ZW50aWFsbHkgZHluYW1pYyBhdCBydW50aW1lIGluIHRoZSBmdXR1cmUuDQoN Ci1QSg==