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Sat, 12 Jan 2019 00:26:53 GMT Received: from EX13D01EUA003.ant.amazon.com (10.43.165.113) by EX13MTAUEA001.ant.amazon.com (10.43.61.82) with Microsoft SMTP Server (TLS) id 15.0.1367.3; Sat, 12 Jan 2019 00:26:52 +0000 Received: from EX13D01EUA004.ant.amazon.com (10.43.165.123) by EX13D01EUA003.ant.amazon.com (10.43.165.113) with Microsoft SMTP Server (TLS) id 15.0.1367.3; Sat, 12 Jan 2019 00:26:51 +0000 Received: from EX13D01EUA004.ant.amazon.com ([10.43.165.123]) by EX13D01EUA004.ant.amazon.com ([10.43.165.123]) with mapi id 15.00.1367.000; Sat, 12 Jan 2019 00:26:51 +0000 From: "Soni, Shivam" To: Stephen Hemminger CC: "dev@dpdk.org" , "users@dpdk.org" Thread-Topic: [dpdk-dev] TX unable to enqueue packets to NIC due to no free TX descriptor Thread-Index: AQHUqfp8gs2WiPzhjEunZZjrnn3cVqWquS6A//+HxQA= Date: Sat, 12 Jan 2019 00:26:51 +0000 Message-ID: References: <454CCFA5-5843-441F-9C6D-33E807419574@amazon.com> <20190111153709.3117c539@hermes.lan> In-Reply-To: <20190111153709.3117c539@hermes.lan> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-exchange-messagesentrepresentingtype: 1 x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [10.43.164.222] Content-Type: text/plain; charset="utf-8" Content-ID: <76DF2C257AC90744A6D0C6315FCB5914@amazon.com> Content-Transfer-Encoding: base64 MIME-Version: 1.0 Precedence: Bulk Subject: Re: [dpdk-dev] TX unable to enqueue packets to NIC due to no free TX descriptor X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 12 Jan 2019 00:26:55 -0000 SGkgU3RlcGhlbiwNCg0KVGhhbmtzIGZvciB0aGUgcmVwbHkuDQoNCk91ciBtYnVmIHBvb2wgaXMg YmlnIGVub3VnaC4gV2UgaGF2ZSAyIFJYIGNvcmVzLCAyIFRYIGNvcmVzIGFuZCA4IHdvcmtlciBj b3Jlcy4NCk5UeGQgYW5kIE5SeGQgaXMgMTAyNCBlYWNoIGFuZCB3ZSBoYXZlIDE2IFJ4IHJpbmdz IChzaGFyZWQgYmV0d2VlbiBSeCBhbmQgd29ya2VycykgYW5kIDggVHggcmluZ3MgKGJldHdlZW4g VHggYW5kIHdvcmtlcnMpDQpNZW1wb29sIGNhY2hlIHNpemUgaXMgMjU2IGFuZCBidXJzdCBzaXpl IGlzIDMyLg0KDQpTbyBvdmVyYWxsIGNhbGN1bGF0aW9uIGNvbWVzIG91dCB0byBiZSANCigoTklD X1JYX1FVRVVFX1NJWkUgKiBSWF9MQ09SRVMpICsgKE5JQ19UWF9RVUVVRV9TSVpFICogVFhfTENP UkVTKSArIFwNCiAgICAgICAgICAgICAgICAgICAgICAgICAgKFdPUktFUl9SWF9SSU5HX1NJWkUg KiBSWF9MQ09SRVMgKiBOQVRfV09SS0VSX0xDT1JFUykgKyAoV09SS0VSX1RYX1JJTkdfU0laRSAq IE5BVF9XT1JLRVJfTENPUkVTKSArIFwNCiAgICAgICAgICAgICAgICAgICAgICAgICAgKChNQlVG X0FSUkFZX1NJWkUgKyBDQUNIRV9TSVpFKSAqIChSWF9MQ09SRVMgKyBUWF9MQ09SRVMgKyBOQVRf V09SS0VSX0xDT1JFUykpKQ0KDQpXaXRoIHRoaXMgdGhlICBtYnVmIHBvb2wgc2l6ZSBzaG91bGQg YmUgMzIxMjguIFRvIHJvdW5kIG9mZiBhcyBwb3dlciBvZiAyIHdlIGhhdmUga2VwdCBtYnVmIHBv b2wgc2l6ZSBhcyAzMjc2Ny4NCg0KQWxzbyB0aGUgaW5jb21pbmcgcGFja2V0IHJhdGUgSXMgcHJl dHR5IGxvdy4NCg0KRm9yIHRlc3RpbmcgSSBoYXZlIGRvdWJsZWQgdGhlIHBvb2wgc2l6ZSBmb3Ig bm93LiBOb3Qgc3VyZSB3aGV0aGVyIHRoaXMgd2lsbCBzb2x2ZSB0aGUgaXNzdWUuDQoNClRoYW5r cy4NCg0K77u/T24gMS8xMS8xOSwgMzozOCBQTSwgIlN0ZXBoZW4gSGVtbWluZ2VyIiA8c3RlcGhl bkBuZXR3b3JrcGx1bWJlci5vcmc+IHdyb3RlOg0KDQogICAgT24gRnJpLCAxMSBKYW4gMjAxOSAy MjoxMDozOSArMDAwMA0KICAgICJTb25pLCBTaGl2YW0iIDxzaGl2c29uaUBhbWF6b24uY29tPiB3 cm90ZToNCiAgICANCiAgICA+IEhpIEFsbCwNCiAgICA+IA0KICAgID4gV2UgYXJlIHRyeWluZyB0 byBkZWJ1ZyBhbmQgZml4IGFuIGlzc3VlLiBBZnRlciB0aGUgZGVwbG95bWVudCwgaW4gZmV3IG9m IHRoZSBob3N0cyB3ZSBzZWUgYW4gaXNzdWUgd2hlcmUgVFggaXMgdW5hYmxlIHRvIGVucXVldWUg cGFja2V0cyB0byBOSUMuIE9uIHJlYm91bmNpbmcgb3IgcmVzdGFydGluZyBvdXIgcGFja2V0IHBy b2Nlc3NvciBkYWVtb24sIGlzc3VlIGdldHMgcmVzb2x2ZWQuDQogICAgPiANCiAgICA+IFdlIGFy ZSB1c2luZyBJbnRlbERQREsgdmVyc2lvbiAxNy4xMS40IGFuZCBpNDBlIGRyaXZlcnMuDQogICAg PiANCiAgICA+IE9uIGxvb2tpbmcgaW50byBkcml2ZXLigJlzIGNvZGUsIHdlIGZvdW5kIHRoYXQg d2hlbmV2ZXIgdGhlIGlzc3VlIGlzIGhhcHBlbmluZyB0aGUgdmFsdWUgZm9yIG5iX3R4X2ZyZWUg aXMg4oCYMOKAmS4gQW5kIHRoZW4gaXQgdHJpZXMgdG8gZnJlZSB0aGUgYnVmZmVyIGJ5IGNhbGxp bmcgZnVuY3Rpb24g4oCYaTQwZV90eF9mcmVlX2J1ZnPigJkuDQogICAgPiANCiAgICA+IFRoaXMg bWV0aG9kIHJldHVybnMgZWFybHkgYXMgdGhlIGJ1ZmZlciBpdHMgdHJ5aW5nIHRvIGZyZWUgc2F5 cyBpdCBoYXNu4oCZdCBmaW5pc2hlZCB0cmFuc21pdHRpbmcgeWV0LiBUaGUgbWV0aG9kIHJldHVy bnMgYXQgdGhpcyBpZiBjb25kaXRpb246DQogICAgPiANCiAgICA+IC8qIGNoZWNrIEREIGJpdHMg b24gdGhyZXNob2xkIGRlc2NyaXB0b3IgKi8NCiAgICA+IGlmICgodHhxLT50eF9yaW5nW3R4cS0+ dHhfbmV4dF9kZF0uY21kX3R5cGVfb2Zmc2V0X2JzeiAmDQogICAgPiAgICAgICAgICAgICAgICAg cnRlX2NwdV90b19sZV82NChJNDBFX1RYRF9RVzFfRFRZUEVfTUFTSykpICE9DQogICAgPiAgICAg ICAgICAgICAgICAgcnRlX2NwdV90b19sZV82NChJNDBFX1RYX0RFU0NfRFRZUEVfREVTQ19ET05F KSkgew0KICAgID4gcmV0dXJuIDA7DQogICAgPiB9DQogICAgPiANCiAgICA+IEhlbmNlIG5iX3R4 X2ZyZWUgcmVtYWlucyAwLg0KICAgID4gDQogICAgPiBPdXIgdHggZGVzY3JpcHRvciBjb3VudCBp cyAxMDI0Lg0KICAgID4gDQogICAgPiBIb3cgY2FuIHdlIGZpeCB0aGlzIGlzc3VlLiAgQ2FuIHNv bWVvbmUgaGVscCB1cyBvdXQgaGVyZSBwbGVhc2UNCiAgICANCiAgICBVc2UgYmlnZ2VyIG1idWYg cG9vbC4gIEZvciBzYWZldHkgdGhlIG1idWYgcG9vbCBoYXMgdG8gYmUgYmlnIGVub3VnaA0KICAg IGZvciBOcG9ydHMgKiAoTlJ4ZCArIE5UeGQpICsgTkNvcmUgKiAobWJ1Zl9wb29sX2NhY2hlX3Np emUgKyBidXJzdF9zaXplKQ0KICAgIA0KICAgIEVhY2ggTklDIG1pZ2h0IGdldCBmdWxsIHJlY2Vp dmUgcmluZyBhbmQgZnVsbCB0cmFuc21pdCByaW5nDQogICAgYW5kIGVhY2ggYWN0aXZlIGNvcmUg bWlnaHQgYmUgcHJvY2Vzc2luZyBhIGJ1cnN0IG9mIHBhY2tldHMgYW5kIGhhdmUNCiAgICBmcmVl IGJ1ZmZlcnMgc2l0dGluZyBpbiB0aGUgbWJ1ZiBwb29sIGNhY2hlLiBUaGlzIGRvZXNuJ3QgYWNj b3VudCBmb3IgYWRkaXRpb25hbA0KICAgIG1idWYncyBjcmVhdGVkIGlmIGRvaW5nIHRoaW5ncyBs aWtlIHJlYXNzZW1ibHksIGVuY3J5cHRpb24sIHJlLWVuY2Fwc3VsYXRpb24sIG9yIGNvbXByZXNz aW9uDQogICAgDQogICAgQW55dGhpbmcgc21hbGxlciBhbmQgeW91ciBhcHBsaWNhdGlvbiBpcyBy ZWx5aW5nIG9uIHN0YXRpc3RpY2FsIGF2ZXJhZ2VzDQogICAgdG8gbmV2ZXIgc2VlIHJlc291cmNl IGV4aGF1c3Rpb247IG92ZXJjb21taXRtZW50DQogICAgDQoNCg==