From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY,URIBL_RED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id EB65FC2B9F4 for ; Thu, 17 Jun 2021 05:55:05 +0000 (UTC) Received: from smtp3.osuosl.org (smtp3.osuosl.org [140.211.166.136]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id A03A4613B9 for ; Thu, 17 Jun 2021 05:55:05 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A03A4613B9 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.alibaba.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=virtualization-bounces@lists.linux-foundation.org Received: from localhost (localhost [127.0.0.1]) by smtp3.osuosl.org (Postfix) with ESMTP id 6835D6075F; Thu, 17 Jun 2021 05:55:05 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from smtp3.osuosl.org ([127.0.0.1]) by localhost (smtp3.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id Vxp0imRHhWNx; Thu, 17 Jun 2021 05:55:04 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [IPv6:2605:bc80:3010:104::8cd3:938]) by smtp3.osuosl.org (Postfix) with ESMTPS id 245D460761; Thu, 17 Jun 2021 05:55:04 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id 07664C000D; Thu, 17 Jun 2021 05:55:04 +0000 (UTC) Received: from smtp1.osuosl.org (smtp1.osuosl.org [IPv6:2605:bc80:3010::138]) by lists.linuxfoundation.org (Postfix) with ESMTP id 1490EC000B for ; Thu, 17 Jun 2021 05:55:03 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp1.osuosl.org (Postfix) with ESMTP id E26CE83D73 for ; Thu, 17 Jun 2021 05:55:02 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from smtp1.osuosl.org ([127.0.0.1]) by localhost (smtp1.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id WU4AQTgtWh7O for ; Thu, 17 Jun 2021 05:55:01 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.8.0 Received: from out4436.biz.mail.alibaba.com (out4436.biz.mail.alibaba.com [47.88.44.36]) by smtp1.osuosl.org (Postfix) with ESMTPS id 6FA8583D70 for ; Thu, 17 Jun 2021 05:55:01 +0000 (UTC) X-Alimail-AntiSpam: AC=PASS; BC=-1|-1; BR=01201311R201e4; CH=green; DM=||false|; DS=||; FP=0|-1|-1|-1|0|-1|-1|-1; HT=e01e04394; MF=xuanzhuo@linux.alibaba.com; NM=1; PH=DS; RN=20; SR=0; TI=SMTPD_---0UcguTXL_1623909298; Received: from localhost(mailfrom:xuanzhuo@linux.alibaba.com fp:SMTPD_---0UcguTXL_1623909298) by smtp.aliyun-inc.com(127.0.0.1); Thu, 17 Jun 2021 13:54:58 +0800 MIME-Version: 1.0 Message-Id: <1623909234.193789-1-xuanzhuo@linux.alibaba.com> Subject: Re: [PATCH net-next v5 13/15] virtio-net: support AF_XDP zc rx Date: Thu, 17 Jun 2021 13:53:54 +0800 From: Xuan Zhuo To: Jason Wang In-Reply-To: X-Mailing-List: netdev@vger.kernel.org Cc: Song Liu , Martin KaFai Lau , Jesper Dangaard Brouer , Daniel Borkmann , "Michael S. Tsirkin" , Yonghong Song , John Fastabend , Alexei Starovoitov , Andrii Nakryiko , netdev@vger.kernel.org, =?utf-8?b?QmrDtnJuIFTDtnBlbA==?= , "dust . li" , Jonathan Lemon , KP Singh , Jakub Kicinski , bpf@vger.kernel.org, virtualization@lists.linux-foundation.org, "David S. Miller" , Magnus Karlsson X-BeenThere: virtualization@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Linux virtualization List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: virtualization-bounces@lists.linux-foundation.org Sender: "Virtualization" T24gVGh1LCAxNyBKdW4gMjAyMSAxMToyMzo1MiArMDgwMCwgSmFzb24gV2FuZyA8amFzb3dhbmdA cmVkaGF0LmNvbT4gd3JvdGU6Cj4KPiDlnKggMjAyMS82LzEwIOS4i+WNiDQ6MjIsIFh1YW4gWmh1 byDlhpnpgZM6Cj4gPiBDb21wYXJlZCB0byB0aGUgY2FzZSBvZiB4c2sgdHgsIHRoZSBjYXNlIG9m IHhzayB6YyByeCBpcyBtb3JlCj4gPiBjb21wbGljYXRlZC4KPiA+Cj4gPiBXaGVuIHdlIHByb2Nl c3MgdGhlIGJ1ZiByZWNlaXZlZCBieSB2cSwgd2UgbWF5IGVuY291bnRlciBvcmRpbmFyeQo+ID4g YnVmZmVycywgb3IgeHNrIGJ1ZmZlcnMuIFdoYXQgbWFrZXMgdGhlIHNpdHVhdGlvbiBtb3JlIGNv bXBsaWNhdGVkIGlzCj4gPiB0aGF0IGluIHRoZSBjYXNlIG9mIG1lcmdlYWJsZSwgd2hlbiBudW1f YnVmZmVyID4gMSwgd2UgbWF5IHN0aWxsCj4gPiBlbmNvdW50ZXIgdGhlIGNhc2Ugd2hlcmUgeHNr IGJ1ZmZlciBpcyBtaXhlZCB3aXRoIG9yZGluYXJ5IGJ1ZmZlci4KPiA+Cj4gPiBBbm90aGVyIHRo aW5nIHRoYXQgbWFrZXMgdGhlIHNpdHVhdGlvbiBtb3JlIGNvbXBsaWNhdGVkIGlzIHRoYXQgd2hl biB3ZQo+ID4gZ2V0IGFuIHhzayBidWZmZXIgZnJvbSB2cSwgdGhlIHhzayBib3VuZCB0byB0aGlz IHhzayBidWZmZXIgbWF5IGhhdmUKPiA+IGJlZW4gdW5ib3VuZC4KPiA+Cj4gPiBTaWduZWQtb2Zm LWJ5OiBYdWFuIFpodW8gPHh1YW56aHVvQGxpbnV4LmFsaWJhYmEuY29tPgo+Cj4KPiBUaGlzIGlz IHNvbWVob3cgc2ltaWxhciB0byB0aGUgY2FzZSBvZiB0eCB3aGVyZSB3ZSBkb24ndCBoYXZlIHBl ciB2cSByZXNldC4KPgo+IFsuLi5dCj4KPiA+Cj4gPiAtCWlmICh2aS0+bWVyZ2VhYmxlX3J4X2J1 ZnMpCj4gPiArCWlmIChpc194c2tfY3R4KGN0eCkpCj4gPiArCQlza2IgPSByZWNlaXZlX3hzayhk ZXYsIHZpLCBycSwgYnVmLCBsZW4sIHhkcF94bWl0LCBzdGF0cyk7Cj4gPiArCWVsc2UgaWYgKHZp LT5tZXJnZWFibGVfcnhfYnVmcykKPiA+ICAgCQlza2IgPSByZWNlaXZlX21lcmdlYWJsZShkZXYs IHZpLCBycSwgYnVmLCBjdHgsIGxlbiwgeGRwX3htaXQsCj4gPiAgIAkJCQkJc3RhdHMpOwo+ID4g ICAJZWxzZSBpZiAodmktPmJpZ19wYWNrZXRzKQo+ID4gQEAgLTExNzUsNiArMTI5NiwxNCBAQCBz dGF0aWMgYm9vbCB0cnlfZmlsbF9yZWN2KHN0cnVjdCB2aXJ0bmV0X2luZm8gKnZpLCBzdHJ1Y3Qg cmVjZWl2ZV9xdWV1ZSAqcnEsCj4gPiAgIAlpbnQgZXJyOwo+ID4gICAJYm9vbCBvb207Cj4gPgo+ ID4gKwkvKiBCZWNhdXNlIHZpcnRpby1uZXQgZG9lcyBub3QgeWV0IHN1cHBvcnQgZmxvdyBkaXJl Y3QsCj4KPgo+IE5vdGUgdGhhdCB0aGlzIGlzIG5vdCB0aGUgY2FzZSBhbnkgbW9yZS4gUlNTIGhh cyBiZWVuIHN1cHBvcnRlZCBieQo+IHZpcnRpbyBzcGVjIGFuZCBxZW11L3Zob3N0L3RhcCBub3cu IFdlIGp1c3QgbmVlZCBzb21lIHdvcmsgb24gdGhlCj4gdmlydGlvLW5ldCBkcml2ZXIgcGFydCAo ZS5nIHRoZSBldGhvb2wgaW50ZXJmYWNlKS4KCk9oLCBhcmUgdGhlcmUgYW55IHBsYW5zPyBXaG8g aXMgZG9pbmcgdGhpcyB3b3JrLCBjYW4gSSBoZWxwPwoKVGhhbmtzLgoKPgo+IFRoYW5rcwo+Cj4K X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KVmlydHVhbGl6 YXRpb24gbWFpbGluZyBsaXN0ClZpcnR1YWxpemF0aW9uQGxpc3RzLmxpbnV4LWZvdW5kYXRpb24u b3JnCmh0dHBzOi8vbGlzdHMubGludXhmb3VuZGF0aW9uLm9yZy9tYWlsbWFuL2xpc3RpbmZvL3Zp cnR1YWxpemF0aW9u