From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Ananyev, Konstantin" Subject: Re: UDP Checksum Date: Thu, 6 Nov 2014 16:15:24 +0000 Message-ID: <2601191342CEEE43887BDE71AB977258213A2E79@IRSMSX105.ger.corp.intel.com> References: Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 To: Alex Markuze , "dev-VfR2kkLFssw@public.gmane.org" Return-path: In-Reply-To: Content-Language: en-US List-Id: patches and discussions about DPDK List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces-VfR2kkLFssw@public.gmane.org Sender: "dev" DQoNCj4gLS0tLS1PcmlnaW5hbCBNZXNzYWdlLS0tLS0NCj4gRnJvbTogZGV2IFttYWlsdG86ZGV2 LWJvdW5jZXNAZHBkay5vcmddIE9uIEJlaGFsZiBPZiBBbGV4IE1hcmt1emUNCj4gU2VudDogVGh1 cnNkYXksIE5vdmVtYmVyIDA2LCAyMDE0IDQ6MDUgUE0NCj4gVG86IGRldkBkcGRrLm9yZw0KPiBT dWJqZWN0OiBbZHBkay1kZXZdIFVEUCBDaGVja3N1bQ0KPiANCj4gSGksDQo+IEknbSBzZWVpbmcg IlVEUDogYmFkIGNoZWNrc3VtLiIgbWVzc2FnZXMoZG1lc2cpIGZvciBwYWNrZXRzIHNlbnQgYnkg bXkgZHBkaw0KPiBhcHAgdG8gYSBzb2NrZXQgb24gYSByZW1vdGUgbWFjaGluZS4NCj4gTG9va2lu ZyBhdCB0aGUgcGFja2V0cyB0aGUgc2N1bSB2YWx1ZSBpcyBzZXQsIGl0cyBqdXN0IG5vdCB3aGF0 IHdpcmVzaGFyaw0KPiBleHBlY3RzLg0KPiANCj4gV2hlbiBzZW5kaW5nIEknbSBzZXR0aW5nIHRo ZXNlIGZpZWxkcyBpbiB0aGUgZWdyZXNzIHBhY2tldHMuDQo+IA0KPiAgICAgICAgIHBrdC0+cGt0 LnZsYW5fbWFjaXAuZi5sMl9sZW4gPSBzaXplb2Yoc3RydWN0IGV0aGVyX2hkcik7DQo+IA0KPiAg ICAgICAgIHBrdC0+cGt0LnZsYW5fbWFjaXAuZi5sM19sZW4gPSBzaXplb2Yoc3RydWN0IGlwdjRf aGRyKTsNCj4gDQo+ICAgICAgICAgcGt0LT5vbF9mbGFncyB8PSAoUEtUX1RYX0lQX0NLU1VNIHwg UEtUX1RYX0w0X01BU0spOw0KPiAvL1BLVF9UWF9PRkZMT0FEX01BU0s7DQo+IA0KPiANCj4gSSdt IHdvcmtpbmcgd2l0aCBhIDgyNTk5IFZGLg0KPiANCj4gDQo+IEFueSB0aG91Z2h0cz8gSSdtIG5v dCBzdXJlIHdoYXQgZWxzZSB0byBjaGVjay4NCg0KQXMgSSByZW1lbWJlciwgeW91IGhhdmUgdG8g c2V0dXAgIElQVjQgaGVhZGVyIGNoZWNrc3VtIHRvIDAgYW5kDQpjYWxjdWxhdGUgYW5kIHNldHVw IHBzZXVkby1oZWFkZXIgY2hlY2tzdW0gZm9yIFVEUC4NCkZyb20gYXBwL3Rlc3QtcG1kL2NzdW1v bmx5LmM6DQouLi4NCmlmIChwa3Rfb2xfZmxhZ3MgJiAoUEtUX1JYX0lQVjRfSERSIHwgUEtUX1JY X1RVTk5FTF9JUFY0X0hEUikpIHsNCg0KICAgICAgICAgICAgICAgICAgICAgICAgLyogRG8gbm90 IHN1cHBvcnQgaXB2NCBvcHRpb24gZmllbGQgKi8NCiAgICAgICAgICAgICAgICAgICAgICAgIGwz X2xlbiA9IHNpemVvZihzdHJ1Y3QgaXB2NF9oZHIpIDsNCg0KICAgICAgICAgICAgICAgICAgICAg ICAgLi4uDQoNCiAgICAgICAgICAgICAgICAgICAgICAgIC8qIERvIG5vdCBkZWxldGUsIHRoaXMg aXMgcmVxdWlyZWQgYnkgSFcqLw0KICAgICAgICAgICAgICAgICAgICAgICAgaXB2NF9oZHItPmhk cl9jaGVja3N1bSA9IDA7DQoNCiAgICAgICAgICAgICAgICAgICAgICAgLi4uDQogICANCiAgICAg ICAgICAgICAgICAgICAgICBpZiAobDRfcHJvdG8gPT0gSVBQUk9UT19VRFApIHsNCiAgICAgICAg ICAgICAgICAgICAgICAgICAgICAgICAgdWRwX2hkciA9IChzdHJ1Y3QgdWRwX2hkciopIChydGVf cGt0bWJ1Zl9tdG9kKG1iLA0KICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAg ICAgICAgICAgdW5zaWduZWQgY2hhciAqKSArIGwyX2xlbiArIGwzX2xlbik7DQogICAgICAgICAg ICAgICAgICAgICAgICAgICAgICAgIGlmICh0eF9vbF9mbGFncyAmIDB4Mikgew0KICAgICAgICAg ICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgIC8qIEhXIE9mZmxvYWQgKi8NCiAgICAgICAg ICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICBvbF9mbGFncyB8PSBQS1RfVFhfVURQX0NL U1VNOw0KICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgIGlmIChpcHY0X3R1 bm5lbCkNCiAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgIHVk cF9oZHItPmRncmFtX2Nrc3VtID0gMDsNCiAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAg ICAgICAgICBlbHNlDQogICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAg ICAgICAvKiBQc2V1ZG8gaGVhZGVyIHN1bSBuZWVkIGJlIHNldCBwcm9wZXJseSAqLw0KICAgICAg ICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgdWRwX2hkci0+ZGdyYW1f Y2tzdW0gPQ0KICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAg ICAgICAgICBnZXRfaXB2NF9wc2Rfc3VtKGlwdjRfaGRyKTsNCg0KDQoNCg==