From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga03.intel.com ([134.134.136.65]:2887 "EHLO mga03.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753374AbbFIQpk (ORCPT ); Tue, 9 Jun 2015 12:45:40 -0400 From: "Jiang, Dave" To: "bhelgaas@google.com" CC: "Allen.Hubbe@emc.com" , "linux-kernel@vger.kernel.org" , "linux-pci@vger.kernel.org" , "jdmason@kudzu.us" , "linux-ntb@googlegroups.com" Subject: Re: [PATCH v3 18/18] NTB: Increase transport MTU to 64k from 16k Date: Tue, 9 Jun 2015 16:45:36 +0000 Message-ID: <1433868335.38406.111.camel@intel.com> References: In-Reply-To: Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Sender: linux-pci-owner@vger.kernel.org List-ID: T24gVHVlLCAyMDE1LTA2LTA5IGF0IDExOjA0IC0wNTAwLCAnQmpvcm4gSGVsZ2FhcycgdmlhIGxp bnV4LW50YiB3cm90ZToNCj4gT24gVHVlLCBKdW4gOSwgMjAxNSBhdCA0OjQ0IEFNLCBBbGxlbiBI dWJiZSA8QWxsZW4uSHViYmVAZW1jLmNvbT4gDQo+IHdyb3RlOg0KPiA+IEZyb206IERhdmUgSmlh bmcgPGRhdmUuamlhbmdAaW50ZWwuY29tPg0KPiA+IA0KPiA+IEJlbmNobWFya2luZyBzaG93ZWQg c2lnbmlmaWNhbnQgcGVyZm9ybWFuY2UgaW5jcmVhc2UgZ29pbmcgZnJvbSBNVFUgDQo+ID4gc2l6 ZQ0KPiA+IG9mIDY0ayBmcm9tIDE2ay4gIENoYW5naW5nIHRoZSBkZWZhdWx0Lg0KPiANCj4gVGhp cyBjaGFuZ2Vsb2cgZG9lc24ndCBwYXJzZS4gIEkgdGhpbmsgeW91IG1lYW4gImdvaW5nIGZyb20g TVRVIHNpemUNCj4gMTZrIHRvIDY0ay4iDQoNClllcy4gU29ycnkgYWJvdXQgdGhlIGNvbmZ1c2lv bi4NCg0KPiANCj4gVGhlIG9yaWdpbmFsIHZhbHVlIHdhcyAweDQwMWUgKDE2ayArIDB4MWUpLCBh bmQgdGhlIG5ldyB2YWx1ZSBpcw0KPiBleGFjdGx5IDY0ay4gIFBsZWFzZSBpbmNsdWRlIGEgbm90 ZSBhYm91dCB3aGF0IHRoYXQgZXh0cmEgMHgxZSB3YXMgDQo+IGZvcg0KPiBhbmQgd2h5IGl0IGlz bid0IG5lZWRlZCBpbiB0aGUgbmV3IHZhbHVlLg0KDQpKb24sIGNhbiB5b3UgY29tbWVudCBvbiB3 aHkgdGhlcmUncyB0aGUgYWRkaXRpb25hbCAzMCBieXRlcyBvbiB0b3Agb2YNCjE2ayBpbiB0aGUg cHJldmlvdXMgdmFsdWU/IA0KDQo+IA0KPiA+IFNpZ25lZC1vZmYtYnk6IERhdmUgSmlhbmcgPGRh dmUuamlhbmdAaW50ZWwuY29tPg0KPiA+IC0tLQ0KPiA+ICBkcml2ZXJzL250Yi9udGJfdHJhbnNw b3J0LmMgfCAyICstDQo+ID4gIDEgZmlsZSBjaGFuZ2VkLCAxIGluc2VydGlvbigrKSwgMSBkZWxl dGlvbigtKQ0KPiA+IA0KPiA+IGRpZmYgLS1naXQgYS9kcml2ZXJzL250Yi9udGJfdHJhbnNwb3J0 LmMgDQo+ID4gYi9kcml2ZXJzL250Yi9udGJfdHJhbnNwb3J0LmMNCj4gPiBpbmRleCBlYTIzN2Fl Y2EyOGMuLmM4N2JjMGNiZDYwNyAxMDA2NDQNCj4gPiAtLS0gYS9kcml2ZXJzL250Yi9udGJfdHJh bnNwb3J0LmMNCj4gPiArKysgYi9kcml2ZXJzL250Yi9udGJfdHJhbnNwb3J0LmMNCj4gPiBAQCAt NzYsNyArNzYsNyBAQCBzdGF0aWMgdW5zaWduZWQgbG9uZyBtYXhfbXdfc2l6ZTsNCj4gPiAgbW9k dWxlX3BhcmFtKG1heF9td19zaXplLCB1bG9uZywgMDY0NCk7DQo+ID4gIE1PRFVMRV9QQVJNX0RF U0MobWF4X213X3NpemUsICJMaW1pdCBzaXplIG9mIGxhcmdlIG1lbW9yeSANCj4gPiB3aW5kb3dz Iik7DQo+ID4gDQo+ID4gLXN0YXRpYyB1bnNpZ25lZCBpbnQgdHJhbnNwb3J0X210dSA9IDB4NDAx RTsNCj4gPiArc3RhdGljIHVuc2lnbmVkIGludCB0cmFuc3BvcnRfbXR1ID0gMHgxMDAwMDsNCj4g PiAgbW9kdWxlX3BhcmFtKHRyYW5zcG9ydF9tdHUsIHVpbnQsIDA2NDQpOw0KPiA+ICBNT0RVTEVf UEFSTV9ERVNDKHRyYW5zcG9ydF9tdHUsICJNYXhpbXVtIHNpemUgb2YgTlRCIHRyYW5zcG9ydCAN Cj4gPiBwYWNrZXRzIik7DQo+ID4gDQo+ID4gLS0NCj4gPiAyLjQuMC5yYzAuNDMuZ2NmOGE4YzYN Cj4gPiANCj4gPiAtLQ0KPiA+IFRvIHVuc3Vic2NyaWJlIGZyb20gdGhpcyBsaXN0OiBzZW5kIHRo ZSBsaW5lICJ1bnN1YnNjcmliZSBsaW51eA0KPiA+IC1wY2kiIGluDQo+ID4gdGhlIGJvZHkgb2Yg YSBtZXNzYWdlIHRvIG1ham9yZG9tb0B2Z2VyLmtlcm5lbC5vcmcNCj4gPiBNb3JlIG1ham9yZG9t byBpbmZvIGF0ICBodHRwOi8vdmdlci5rZXJuZWwub3JnL21ham9yZG9tby1pbmZvLmh0bWwNCj4g