From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) by dpdk.org (Postfix) with ESMTP id 7ED2E5A38 for ; Thu, 30 Jul 2015 18:10:38 +0200 (CEST) Received: from orsmga003.jf.intel.com ([10.7.209.27]) by fmsmga101.fm.intel.com with ESMTP; 30 Jul 2015 09:10:24 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.15,577,1432623600"; d="scan'208";a="616125654" Received: from pgsmsx104.gar.corp.intel.com ([10.221.44.91]) by orsmga003.jf.intel.com with ESMTP; 30 Jul 2015 09:10:22 -0700 Received: from shsmsx102.ccr.corp.intel.com (10.239.4.154) by PGSMSX104.gar.corp.intel.com (10.221.44.91) with Microsoft SMTP Server (TLS) id 14.3.224.2; Fri, 31 Jul 2015 00:10:21 +0800 Received: from shsmsx104.ccr.corp.intel.com ([169.254.5.45]) by shsmsx102.ccr.corp.intel.com ([169.254.2.126]) with mapi id 14.03.0224.002; Fri, 31 Jul 2015 00:10:20 +0800 From: "Zhang, Helin" To: Vlad Zolotarov , "Ananyev, Konstantin" Thread-Topic: i40e xmit path HW limitation Thread-Index: AQHQytgX0NZLyLyoJE69mFI5StFakp30KEOw Date: Thu, 30 Jul 2015 16:10:19 +0000 Message-ID: References: <55BA3B5D.4020402@cloudius-systems.com> In-Reply-To: <55BA3B5D.4020402@cloudius-systems.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.239.127.40] Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 MIME-Version: 1.0 Cc: "dev@dpdk.org" Subject: Re: [dpdk-dev] i40e xmit path HW limitation X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: patches and discussions about DPDK List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 30 Jul 2015 16:10:39 -0000 DQoNCj4gLS0tLS1PcmlnaW5hbCBNZXNzYWdlLS0tLS0NCj4gRnJvbTogVmxhZCBab2xvdGFyb3Yg W21haWx0bzp2bGFkekBjbG91ZGl1cy1zeXN0ZW1zLmNvbV0NCj4gU2VudDogVGh1cnNkYXksIEp1 bHkgMzAsIDIwMTUgNzo1OCBBTQ0KPiBUbzogZGV2QGRwZGsub3JnOyBBbmFueWV2LCBLb25zdGFu dGluOyBaaGFuZywgSGVsaW4NCj4gU3ViamVjdDogUkZDOiBpNDBlIHhtaXQgcGF0aCBIVyBsaW1p dGF0aW9uDQo+IA0KPiBIaSwgS29uc3RhbnRpbiwgSGVsaW4sDQo+IHRoZXJlIGlzIGEgZG9jdW1l bnRlZCBsaW1pdGF0aW9uIG9mIHhsNzEwIGNvbnRyb2xsZXJzIChpNDBlIGRyaXZlcikgd2hpY2gg aXMgbm90DQo+IGhhbmRsZWQgaW4gYW55IHdheSBieSBhIERQREsgZHJpdmVyLg0KPiAgRnJvbSB0 aGUgZGF0YXNoZWV0IGNoYXB0ZXIgOC40LjE6DQo+IA0KPiAi4oCiIEEgc2luZ2xlIHRyYW5zbWl0 IHBhY2tldCBtYXkgc3BhbiB1cCB0byA4IGJ1ZmZlcnMgKHVwIHRvIDggZGF0YSBkZXNjcmlwdG9y cyBwZXINCj4gcGFja2V0IGluY2x1ZGluZyBib3RoIHRoZSBoZWFkZXIgYW5kIHBheWxvYWQgYnVm ZmVycykuDQo+IOKAoiBUaGUgdG90YWwgbnVtYmVyIG9mIGRhdGEgZGVzY3JpcHRvcnMgZm9yIHRo ZSB3aG9sZSBUU08gKGV4cGxhaW5lZCBsYXRlciBvbiBpbg0KPiB0aGlzIGNoYXB0ZXIpIGlzIHVu bGltaXRlZCBhcyBsb25nIGFzIGVhY2ggc2VnbWVudCB3aXRoaW4gdGhlIFRTTyBvYmV5cyB0aGUN Cj4gcHJldmlvdXMgcnVsZSAodXAgdG8gOCBkYXRhIGRlc2NyaXB0b3JzIHBlciBzZWdtZW50IGZv ciBib3RoIHRoZSBUU08gaGVhZGVyIGFuZA0KPiB0aGUgc2VnbWVudCBwYXlsb2FkIGJ1ZmZlcnMp LiINClllcywgSSByZW1lbWJlciB0aGUgUlggc2lkZSBqdXN0IHN1cHBvcnRzIDUgc2VnbWVudHMg cGVyIHBhY2tldCByZWNlaXZpbmcuDQpCdXQgd2hhdCdzIHRoZSBwb3NzaWJsZSBpc3N1ZSB5b3Ug dGhvdWdodCBhYm91dD8NCg0KPiANCj4gVGhpcyBtZWFucyB0aGF0LCBmb3IgaW5zdGFuY2UsIGxv bmcgY2x1c3RlciB3aXRoIHNtYWxsIGZyYWdtZW50cyBoYXMgdG8gYmUNCj4gbGluZWFyaXplZCBi ZWZvcmUgaXQgbWF5IGJlIHBsYWNlZCBvbiB0aGUgSFcgcmluZy4NCldoYXQgdHlwZSBvZiBzaXpl IG9mIHRoZSBzbWFsbCBmcmFnbWVudHM/IEJhc2ljYWxseSAyS0IgaXMgdGhlIGRlZmF1bHQgc2l6 ZSBvZiBtYnVmIG9mIG1vc3QNCmV4YW1wbGUgYXBwbGljYXRpb25zLiAyS0IgeCA4IGlzIGJpZ2dl ciB0aGFuIDEuNUtCLiBTbyBpdCBpcyBlbm91Z2ggZm9yIHRoZSBtYXhpbXVtDQpwYWNrZXQgc2l6 ZSB3ZSBzdXBwb3J0ZWQuDQpJZiAxS0IgbWJ1ZiBpcyB1c2VkLCBkb24ndCBleHBlY3QgaXQgY2Fu IHRyYW5zbWl0IG1vcmUgdGhhbiA4S0Igc2l6ZSBvZiBwYWNrZXQuDQoNCj4gSW4gbW9yZSBzdGFu ZGFyZCBlbnZpcm9ubWVudHMgbGlrZSBMaW51eCBvciBGcmVlQlNEIGRyaXZlcnMgdGhlIHNvbHV0 aW9uIGlzDQo+IHN0cmFpZ2h0IGZvcndhcmQgLSBjYWxsIHNrYl9saW5lYXJpemUoKS9tX2NvbGxh cHNlKCkgY29ycmVzcG9uZGluZy4NCj4gSW4gdGhlIG5vbi1jb25mb3JtaXN0IGVudmlyb25tZW50 IGxpa2UgRFBESyBsaWZlIGlzIG5vdCB0aGF0IGVhc3kgLSB0aGVyZSBpcyBubw0KPiBlYXN5IHdh eSB0byBjb2xsYXBzZSB0aGUgY2x1c3RlciBpbnRvIGEgbGluZWFyIGJ1ZmZlciBmcm9tIGluc2lk ZSB0aGUgZGV2aWNlIGRyaXZlcg0KPiBzaW5jZSBkZXZpY2UgZHJpdmVyIGRvZXNuJ3QgYWxsb2Nh dGUgbWVtb3J5IGluIGEgZmFzdCBwYXRoIGFuZCB1dGlsaXplcyB0aGUgdXNlcg0KPiBhbGxvY2F0 ZWQgcG9vbHMgb25seS4NCg0KPiANCj4gSGVyZSBhcmUgdHdvIHByb3Bvc2FscyBmb3IgYSBzb2x1 dGlvbjoNCj4gDQo+ICAxLiBXZSBtYXkgcHJvdmlkZSBhIGNhbGxiYWNrIHRoYXQgd291bGQgcmV0 dXJuIGEgdXNlciBUUlVFIGlmIGEgZ2l2ZQ0KPiAgICAgY2x1c3RlciBoYXMgdG8gYmUgbGluZWFy aXplZCBhbmQgaXQgc2hvdWxkIGFsd2F5cyBiZSBjYWxsZWQgYmVmb3JlDQo+ICAgICBydGVfZXRo X3R4X2J1cnN0KCkuIEFsdGVybmF0aXZlbHkgaXQgbWF5IGJlIGNhbGxlZCBmcm9tIGluc2lkZSB0 aGUNCj4gICAgIHJ0ZV9ldGhfdHhfYnVyc3QoKSBhbmQgcnRlX2V0aF90eF9idXJzdCgpIGlzIGNo YW5nZWQgdG8gcmV0dXJuIHNvbWUNCj4gICAgIGVycm9yIGNvZGUgZm9yIGEgY2FzZSB3aGVuIG9u ZSBvZiB0aGUgY2x1c3RlcnMgaXQncyBnaXZlbiBoYXMgdG8gYmUNCj4gICAgIGxpbmVhcml6ZWQu DQo+ICAyLiBBbm90aGVyIG9wdGlvbiBpcyB0byBhbGxvY2F0ZSBhIG1lbXBvb2wgaW4gdGhlIGRy aXZlciB3aXRoIHRoZQ0KPiAgICAgZWxlbWVudHMgY29uc3VtaW5nIGEgc2luZ2xlIHBhZ2UgZWFj aCAoc3RhbmRhcmQgMktCIGJ1ZmZlcnMgd291bGQNCj4gICAgIGRvKS4gTnVtYmVyIG9mIGVsZW1l bnRzIGluIHRoZSBwb29sIHNob3VsZCBiZSBhcyBUeCByaW5nIGxlbmd0aA0KPiAgICAgbXVsdGlw bGllZCBieSAiNjRLQi8obGluZWFyIGRhdGEgbGVuZ3RoIG9mIHRoZSBidWZmZXIgaW4gdGhlIHBv b2wNCj4gICAgIGFib3ZlKSIuIEhlcmUgSSB1c2UgNjRLQiBhcyBhIG1heGltdW0gcGFja2V0IGxl bmd0aCBhbmQgbm90IHRha2luZw0KPiAgICAgaW50byBhbiBhY2NvdW50IGVzb3RlcmljIHRoaW5n cyBsaWtlICJHaWFudCIgVFNPIG1lbnRpb25lZCBpbiB0aGUNCj4gICAgIHNwZWMgYWJvdmUuIFRo ZW4gd2UgbWF5IGFjdHVhbGx5IGdvIGFuZCBsaW5lYXJpemUgdGhlIGNsdXN0ZXIgaWYNCj4gICAg IG5lZWRlZCBvbiB0b3Agb2YgdGhlIGJ1ZmZlcnMgZnJvbSB0aGUgcG9vbCBhYm92ZSwgcG9zdCB0 aGUgYnVmZmVyDQo+ICAgICBmcm9tIHRoZSBtZW1wb29sIGFib3ZlIG9uIHRoZSBIVyByaW5nLCBs aW5rIHRoZSBvcmlnaW5hbCBjbHVzdGVyIHRvDQo+ICAgICB0aGF0IG5ldyBjbHVzdGVyICh1c2lu ZyB0aGUgcHJpdmF0ZSBkYXRhKSBhbmQgcmVsZWFzZSBpdCB3aGVuIHRoZQ0KPiAgICAgc2VuZCBp cyBkb25lLg0KPiANCj4gDQo+IFRoZSBmaXJzdCBpcyBhIGNoYW5nZSBpbiB0aGUgQVBJIGFuZCB3 b3VsZCByZXF1aXJlIGZyb20gdGhlIGFwcGxpY2F0aW9uIHNvbWUNCj4gYWRkaXRpb25hbCBoYW5k bGluZyAobGluZWFyaXphdGlvbikuIFRoZSBzZWNvbmQgd291bGQgcmVxdWlyZSBzb21lIGFkZGl0 aW9uYWwNCj4gbWVtb3J5IGJ1dCB3b3VsZCBrZWVwIGFsbCBkaXJ0eSBkZXRhaWxzIGluc2lkZSB0 aGUgZHJpdmVyIGFuZCB3b3VsZCBsZWF2ZSB0aGUNCj4gcmVzdCBvZiB0aGUgY29kZSBpbnRhY3Qu DQo+IA0KPiBQbHMuLCBjb21tZW50Lg0KPiANCj4gdGhhbmtzLA0KPiB2bGFkDQo+IA0KDQo=