From mboxrd@z Thu Jan 1 00:00:00 1970 From: "=?ISO-8859-1?B?YmFpIGJha2FyaQ==?=" <912873551@qq.com> Subject: Re: About the data payload of rte_mbuf? Date: Thu, 6 Dec 2018 12:59:54 +0800 Message-ID: References: <4C9E0AB70F954A408CC4ADDBF0F8FA7D4D2D40E2@BGSMSX101.gar.corp.intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="ISO-8859-1" Content-Transfer-Encoding: base64 Cc: "=?ISO-8859-1?B?ZGV2?=" To: "=?ISO-8859-1?B?VmFyZ2hlc2UsIFZpcGlu?=" Return-path: Received: from smtpbg64.qq.com (smtpbg64.qq.com [103.7.28.238]) by dpdk.org (Postfix) with ESMTP id C6D82683E for ; Thu, 6 Dec 2018 05:59:58 +0100 (CET) In-Reply-To: <4C9E0AB70F954A408CC4ADDBF0F8FA7D4D2D40E2@BGSMSX101.gar.corp.intel.com> List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" SGksIA0KDQoNClRoYW5rIHlvdXIgcmVwbHkuDQoNCg0KRm9yIHlvdXIgdHdvIHF1ZXN0aW9u LCANCjEuIEkgdGhpbmsgaXQncyByaWdodCwgYmVjYXVzZSB0aGUgZGVmaW5pdGlvbiBvZiAi cnRlX3BrdG1idWZfbXRvZF9vZmZzZXQiIGlzOg0KI2RlZmluZSBydGVfcGt0bWJ1Zl9tdG9k X29mZnNldChtLCB0LCBvKQlcDQoJKCh0KSgoY2hhciAqKShtKS0+YnVmX2FkZHIgKyAobSkt PmRhdGFfb2ZmICsgKG8pKSkNCg0KDQoNCjIuIEkgc2V0IHRoZSBwYWNrZXQgdHlwZSBpcyBJ UHY0IHdoZW4gaSB1c2UgZHBkay1wa3RnZW4sIHRoYXQgaWYgY2FuIHByb21pc2UgaXRzIHR5 cGUgaXMgSVB2ND8NCg0KDQotLS0tLS0tLS0tLS0tLS0tLS0gT3JpZ2luYWwgLS0tLS0tLS0t LS0tLS0tLS0tDQpGcm9tOiAgIlZhcmdoZXNlLCBWaXBpbiI8dmlwaW4udmFyZ2hlc2VAaW50 ZWwuY29tPjsNCkRhdGU6ICBUaHUsIERlYyA2LCAyMDE4IDEyOjIwIFBNDQpUbzogICJiYWkg YmFrYXJpIjw5MTI4NzM1NTFAcXEuY29tPjsiZGV2IjxkZXZAZHBkay5vcmc+Ow0KDQpTdWJq ZWN0OiAgUkU6IFtkcGRrLWRldl0gQWJvdXQgdGhlIGRhdGEgcGF5bG9hZCBvZiBydGVfbWJ1 Zj8NCg0KDQoNCkhpLA0KDQpBIHF1aWNrIHF1ZXJ5IGZyb20geW91ciBlbWFpbA0KDQpTbmlw cGVkDQoNCj4gaXB2NF9oZHIgPSBydGVfcGt0bWJ1Zl9tdG9kX29mZnNldChtLCBzdHJ1Y3Qg aXB2NF9oZHIgKiwgc2l6ZW9mKHN0cnVjdA0KPiBldGhlcl9oZHIpKTsgDQoNClF1ZXN0aW9u czoNCjEuIFNob3VsZCBub3QgYmUgc2l6ZW9mKHN0cnVjdCBpcHY0X2hkcikgc2luY2UgeW91 IGFyZSBwYXNzaW5nIHNlY29uZCBhcmd1bWVudCBhcyBpcHY0X2hkcj8NCjIuIHlvdSBhcmUg Z2V0dGluZyBwYWNrZXRzIHdoaWNoIHN0YXJ0cyBmcm9tIGV0aGVyIG9yIGlwdjQ/IElmIGl0 IGlzIGV0aGVybmV0IGhlYWRlciB3b3VsZCBub3QgeW91IGNoZWNraW5nIGlmIGV0aGVyIHR5 cGUgaXMgaXB2NCBmaXJzdD8gWW91IGNhbiBnZXQgYXJwLCB2bGFuLCBtcGxzIHJpZ2h0Pw0K DQppcF9sZW4gPSBudG9ocyhpcHY0X2hkci0+dG90YWxfbGVuZ3RoKTsNCj4gDQo+IA0KPiAN Cj4gaWYgKGlwdjRfaGRyLT5uZXh0X3Byb3RvX2lkID09IElQUFJPVE9fVENQKSB7DQo+ICAg ICB0Y3BfaGRyID0gKHN0cnVjdCB0Y3BfaGRyICopKCh1aW50OF90ICopaXB2NF9oZHIgKyAo KGlwdjRfaGRyLT52ZXJzaW9uX2lobCAmDQo+IDB4ZikgPDwgMikpOw0KPiAgICAgcGF5bG9h ZCA9ICh1aW50OF90ICopdGNwX2hkciArICh0Y3BfaGRyLT5kYXRhX29mZiA8PCAyKTsNCj4g ICAgIHBheWxvYWRfbGVuID0gaXBfbGVuIC0gKHBheWxvYWQgLSAodWludDhfdCAqKWlwdjRf aGRyKTsNCj4gDQo+IH0NCj4gDQo+IA0KPiB3aGVuIGkgc2VuZCBwYWNrZXRzIHVzaW5nIGRw ZGstcGt0Z2VuLCBpIGZvdW5kOg0KPiBpcF9sZW4gPSA0Ng0KPiBpcF9oZWFkZXJfbGVuID0g MjANCj4gYnV0IHRoZSB0Y3BfaGVhZGVyX2xlbj0odGNwX2hkci0+ZGF0YV9vZmYgPDwgMik9 MCwgYW5kIChwYXlsb2FkIC0gKHVpbnQ4X3QNCj4gKilpcHY0X2hkcikgPSAzNDAgPiBpcF9s ZW4uDQo+IA0KPiANCj4gSSdtIGNvbmZ1c2VkLCBpcyB0aGVyZSBhbnkgZXJyb3JzIGFib3V0 IHRoZSBjb2RlIHRvIGNvbXB1dGUgdGhlIHBheWxvYWRfbGVuIG9mDQo+IHJ0ZV9tYnVmPw0K PiBJIHRoaW5rIG1heWJlIHRoZSBkcGRrLXBrdGdlbiBjYW5ub3Qgc2VuZCB0aGUgcGFja2V0 cyB3aXRoIHBheWxvYWQ/DQo+IA0KPiANCj4gSSdtIGEgYmVnaW5uZXIsIGFueW9uZSBjYW4g aGVscCBtZSBob3cgdG8gY29tcHV0ZSB0aGUgcGF5bG9hZF9sZW4gb2YNCj4gcnRlX21idWYg YW5kIHRlc3QgaXQ/DQo+IA0KPiANCj4gVGhhbmsgeW91IGluIGFkdmFuY2Uh