From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Michael S. Tsirkin" Subject: Re: [PATCH net] virtio-net: unbreak cusmed packet for small buffer XDP Date: Wed, 28 Jun 2017 07:01:00 +0300 Message-ID: <20170628065126-mutt-send-email-mst@kernel.org> References: <1498614843-8163-1-git-send-email-jasowang@redhat.com> <20170628050057-mutt-send-email-mst@kernel.org> <7068053c-50da-6779-5ff2-6588e01e616d@redhat.com> <20170628051555-mutt-send-email-mst@kernel.org> <69907228-fc1b-175f-f6cd-7ac332e318be@redhat.com> <20170628063033-mutt-send-email-mst@kernel.org> <51f4c402-6a02-9bad-6dab-563ca72f431a@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Content-Disposition: inline In-Reply-To: <51f4c402-6a02-9bad-6dab-563ca72f431a@redhat.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: virtualization-bounces@lists.linux-foundation.org Errors-To: virtualization-bounces@lists.linux-foundation.org To: Jason Wang Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org, virtualization@lists.linux-foundation.org List-Id: virtualization@lists.linuxfoundation.org T24gV2VkLCBKdW4gMjgsIDIwMTcgYXQgMTE6NDA6MzBBTSArMDgwMCwgSmFzb24gV2FuZyB3cm90 ZToKPiAKPiAKPiBPbiAyMDE35bm0MDbmnIgyOOaXpSAxMTozMSwgTWljaGFlbCBTLiBUc2lya2lu IHdyb3RlOgo+ID4gT24gV2VkLCBKdW4gMjgsIDIwMTcgYXQgMTA6NDU6MThBTSArMDgwMCwgSmFz b24gV2FuZyB3cm90ZToKPiA+ID4gT24gMjAxN+W5tDA25pyIMjjml6UgMTA6MTcsIE1pY2hhZWwg Uy4gVHNpcmtpbiB3cm90ZToKPiA+ID4gPiBPbiBXZWQsIEp1biAyOCwgMjAxNyBhdCAxMDoxNDoz NEFNICswODAwLCBKYXNvbiBXYW5nIHdyb3RlOgo+ID4gPiA+ID4gT24gMjAxN+W5tDA25pyIMjjm l6UgMTA6MDIsIE1pY2hhZWwgUy4gVHNpcmtpbiB3cm90ZToKPiA+ID4gPiA+ID4gT24gV2VkLCBK dW4gMjgsIDIwMTcgYXQgMDk6NTQ6MDNBTSArMDgwMCwgSmFzb24gV2FuZyB3cm90ZToKPiA+ID4g PiA+ID4gPiBXZSBzaG91bGQgYWxsb3cgY3N1bWVkIHBhY2tldCBmb3Igc21hbGwgYnVmZmVyLCBv dGhlcndpc2UgWERQX1BBU1MKPiA+ID4gPiA+ID4gPiB3b24ndCB3b3JrIGNvcnJlY3RseS4KPiA+ ID4gPiA+ID4gPiAKPiA+ID4gPiA+ID4gPiBGaXhlcyBjb21taXQgYmI5MWFjY2YyNzMzICgidmly dGlvLW5ldDogWERQIHN1cHBvcnQgZm9yIHNtYWxsIGJ1ZmZlcnMiKQo+ID4gPiA+ID4gPiA+IFNp Z25lZC1vZmYtYnk6IEphc29uIFdhbmc8amFzb3dhbmdAcmVkaGF0LmNvbT4KPiA+ID4gPiA+ID4g VGhlIGlzc3VlIHdvdWxkIGJlIFZJUlRJT19ORVRfSERSX0ZfREFUQV9WQUxJRCBtaWdodCBiZSBz ZXQuCj4gPiA+ID4gPiA+IFdoYXQgZG8geW91IHRoaW5rPwo+ID4gPiA+ID4gSSB0aGluayBpdCdz IHNhZmUuIEZvciBYRFBfUEFTUywgaXQgd29yayBsaWtlIGluIHRoZSBwYXN0Lgo+ID4gPiA+IFRo YXQncyB0aGUgcGFydCBJIGRvbid0IGdldC4gV2l0aCBEQVRBX1ZBTElEIGNzdW0gaW4gcGFja2V0 IGlzIHdyb25nLCBYRFAKPiA+ID4gPiB0b29scyBhc3N1bWUgaXQncyB2YWx1ZS4KPiA+ID4gREFU QV9WQUxJRCBpcyBDSEVDS1NVTV9VTkNFU1NBUlkgb24gdGhlIGhvc3QsIGFuZCBhY2NvcmRpbmcg dG8gdGhlIGNvbW1lbnQKPiA+ID4gaW4gc2tidWZmLmgKPiA+ID4gCj4gPiA+IAo+ID4gPiAiCj4g PiA+ICAgKiAgIFRoZSBoYXJkd2FyZSB5b3UncmUgZGVhbGluZyB3aXRoIGRvZXNuJ3QgY2FsY3Vs YXRlIHRoZSBmdWxsIGNoZWNrc3VtCj4gPiA+ICAgKiAgIChhcyBpbiBDSEVDS1NVTV9DT01QTEVU RSksIGJ1dCBpdCBkb2VzIHBhcnNlIGhlYWRlcnMgYW5kIHZlcmlmeQo+ID4gPiBjaGVja3N1bXMK PiA+ID4gICAqICAgZm9yIHNwZWNpZmljIHByb3RvY29scy4gRm9yIHN1Y2ggcGFja2V0cyBpdCB3 aWxsIHNldAo+ID4gPiBDSEVDS1NVTV9VTk5FQ0VTU0FSWQo+ID4gPiAgICogICBpZiB0aGVpciBj aGVja3N1bXMgYXJlIG9rYXkuIHNrYi0+Y3N1bSBpcyBzdGlsbCB1bmRlZmluZWQgaW4gdGhpcyBj YXNlCj4gPiA+ICAgKiAgIHRob3VnaC4gQSBkcml2ZXIgb3IgZGV2aWNlIG11c3QgbmV2ZXIgbW9k aWZ5IHRoZSBjaGVja3N1bSBmaWVsZCBpbiB0aGUKPiA+ID4gICAqICAgcGFja2V0IGV2ZW4gaWYg Y2hlY2tzdW0gaXMgdmVyaWZpZWQuCj4gPiA+ICIKPiA+ID4gCj4gPiA+IFRoZSBjc3VtIGlzIGNv cnJlY3QgSSBiZWxpZXZlPwo+ID4gPiAKPiA+ID4gVGhhbmtzCj4gPiBUaGF0J3Mgb24gaW5wdXQu IEJ1dCBJIHRoaW5rIGZvciB0dW4gaXQncyBvdXRwdXQsIHdoZXJlIHRoYXQgaXMgZXF1aXZhbGVu dAo+ID4gdG8gQ0hFQ0tTVU1fTk9ORQo+ID4gCj4gPiAKPiAKPiBZZXMsIGJ1dCB0aGUgY29tbWVu dCBzYWlkOgo+IAo+ICIKPiBDS1NVTV9OT05FOgo+ICAqCj4gICogICBUaGUgc2tiIHdhcyBhbHJl YWR5IGNoZWNrc3VtbWVkIGJ5IHRoZSBwcm90b2NvbCwgb3IgYSBjaGVja3N1bSBpcyBub3QKPiAg KiAgIHJlcXVpcmVkLgo+ICAqCj4gICogQ0hFQ0tTVU1fVU5ORUNFU1NBUlk6Cj4gICoKPiAgKiAg IFRoaXMgaGFzIHRoZSBzYW1lIG1lYW5pbmcgb24gYXMgQ0hFQ0tTVU1fTk9ORSBmb3IgY2hlY2tz dW0gb2ZmbG9hZCBvbgo+ICAqICAgb3V0cHV0Lgo+ICAqCj4gIgo+IAo+IFNvIHN0aWxsIGNvcnJl Y3QgSSB0aGluaz8KPiAKPiBUaGFua3MKCkhtbSBtYXliZSBJIG1lYW4gTkVFRFNfQ0hFQ0tTVU0g YWN0dWFsbHkuCgpJJ2xsIG5lZWQgdG8gcmUtcmVhZCB0aGUgc3BlYy4KCi0tIApNU1QKX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KVmlydHVhbGl6YXRpb24g bWFpbGluZyBsaXN0ClZpcnR1YWxpemF0aW9uQGxpc3RzLmxpbnV4LWZvdW5kYXRpb24ub3JnCmh0 dHBzOi8vbGlzdHMubGludXhmb3VuZGF0aW9uLm9yZy9tYWlsbWFuL2xpc3RpbmZvL3ZpcnR1YWxp emF0aW9u