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=-15.3 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 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 D6928C2B9F4 for ; Thu, 17 Jun 2021 06:03:48 +0000 (UTC) Received: from smtp2.osuosl.org (smtp2.osuosl.org [140.211.166.133]) (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 7218961245 for ; Thu, 17 Jun 2021 06:03:48 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 7218961245 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.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 smtp2.osuosl.org (Postfix) with ESMTP id 3ED414056A; Thu, 17 Jun 2021 06:03:48 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from smtp2.osuosl.org ([127.0.0.1]) by localhost (smtp2.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id bM-lppcKDTIn; Thu, 17 Jun 2021 06:03:47 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [140.211.9.56]) by smtp2.osuosl.org (Postfix) with ESMTPS id D982940566; Thu, 17 Jun 2021 06:03:46 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id AC3FAC000D; Thu, 17 Jun 2021 06:03:46 +0000 (UTC) Received: from smtp3.osuosl.org (smtp3.osuosl.org [140.211.166.136]) by lists.linuxfoundation.org (Postfix) with ESMTP id C1E4FC000B for ; Thu, 17 Jun 2021 06:03:45 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp3.osuosl.org (Postfix) with ESMTP id A8514606F5 for ; Thu, 17 Jun 2021 06:03:45 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Authentication-Results: smtp3.osuosl.org (amavisd-new); dkim=pass (1024-bit key) header.d=redhat.com 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 jWci4GpXPAlV for ; Thu, 17 Jun 2021 06:03:43 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.8.0 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by smtp3.osuosl.org (Postfix) with ESMTPS id 76221606DD for ; Thu, 17 Jun 2021 06:03:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1623909822; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=b1zTTNZzldcOXcFO81FD+YymNMfG6CM1iqsPxo2zJvk=; b=JNBtwtAAy8vaQdUuB6uDCNxoMbLAbg5zER3c3awYHf44/O7Kv4s/Prt75EBR0/ZZAAw+rf jyMUDM/rkFJ0d9XiL6U9ONvMNr39HFVMzejeIVmow+ICkc83Pe1xWVLad67HILuEqPCWzm qhjXH4vV0Zetd4EW9NIK+A3G0JKvP7U= Received: from mail-pl1-f200.google.com (mail-pl1-f200.google.com [209.85.214.200]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-10-uYJY5KzsONKCWMNmchRk2Q-1; Thu, 17 Jun 2021 02:03:39 -0400 X-MC-Unique: uYJY5KzsONKCWMNmchRk2Q-1 Received: by mail-pl1-f200.google.com with SMTP id n10-20020a170902e54ab029011af95458e3so1297461plf.15 for ; Wed, 16 Jun 2021 23:03:39 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-transfer-encoding :content-language; bh=b1zTTNZzldcOXcFO81FD+YymNMfG6CM1iqsPxo2zJvk=; b=hkIUFjTAzkMZE5le9jSSJbBU/BOgqPwP1d3sMhqQsZoRJK/59Urw9xRH5CN2sanN1U sQaLQH0esy7bqAcdH1MLFE7BoKMKle62BuEVmBG4DZ0tJLfObBmyR7DBP07YVlXzJ4ju 0W0AyPU1c9I3QR7yDxXTaIdBdWg/84fY4nMP4wF7uU3Ax+//FuSrfUlrvOihU6fBotpB 9kC0/BySVYncIdxoTa5H5sS5LZ7/Sk/q49y+cdZVqcTqUQEnTfRVgOF1eGFF3DwsQMdU 74viy2/Sy6v8GiKgyI00mTSxDAP6W+OW8Ew5VRjGUzD0qIgm9TYZCGuSoXPhAtfRGigz MWYQ== X-Gm-Message-State: AOAM531BGWpFseXO95nx8mHNNK7rSbG7xHGs3xi6HPq0xF1Crdnp4pUj 1ru/HVlPptj2Mfxgi9PjehNh9Vb1O1bDUJJVezOsOs8mol641vqW7UHMc02L50bSUdushBEN6Z/ 2tkAqxtZ0/buemoi53i6dD5oTXdK6ob9PS8yfcBuERA== X-Received: by 2002:aa7:80d9:0:b029:2ed:49fa:6dc5 with SMTP id a25-20020aa780d90000b02902ed49fa6dc5mr3578817pfn.3.1623909818189; Wed, 16 Jun 2021 23:03:38 -0700 (PDT) X-Google-Smtp-Source: ABdhPJyneNziveW3pKM2kixvqEMieLDf93TnaHSdn5/1L0tRwaQ6XNsum8Lh4E+DvP8zwQ3nj76oZg== X-Received: by 2002:aa7:80d9:0:b029:2ed:49fa:6dc5 with SMTP id a25-20020aa780d90000b02902ed49fa6dc5mr3578783pfn.3.1623909817981; Wed, 16 Jun 2021 23:03:37 -0700 (PDT) Received: from wangxiaodeMacBook-Air.local ([209.132.188.80]) by smtp.gmail.com with ESMTPSA id 125sm3731545pfg.52.2021.06.16.23.03.30 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 16 Jun 2021 23:03:37 -0700 (PDT) Subject: Re: [PATCH net-next v5 13/15] virtio-net: support AF_XDP zc rx To: Xuan Zhuo References: <1623909234.193789-1-xuanzhuo@linux.alibaba.com> From: Jason Wang Message-ID: <0d4c5ff5-2b53-6b55-b5aa-bd943af98bb7@redhat.com> Date: Thu, 17 Jun 2021 14:03:29 +0800 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:78.0) Gecko/20100101 Thunderbird/78.11.0 MIME-Version: 1.0 In-Reply-To: <1623909234.193789-1-xuanzhuo@linux.alibaba.com> Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=jasowang@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Language: en-US Cc: Song Liu , Martin KaFai Lau , Jesper Dangaard Brouer , Daniel Borkmann , "Michael S. Tsirkin" , Yonghong Song , John Fastabend , Alexei Starovoitov , Andrew Melnychenko , Andrii Nakryiko , netdev@vger.kernel.org, yuri Benditovich , =?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-Transfer-Encoding: base64 Content-Type: text/plain; charset="utf-8"; Format="flowed" Errors-To: virtualization-bounces@lists.linux-foundation.org Sender: "Virtualization" CuWcqCAyMDIxLzYvMTcg5LiL5Y2IMTo1MywgWHVhbiBaaHVvIOWGmemBkzoKPiBPbiBUaHUsIDE3 IEp1biAyMDIxIDExOjIzOjUyICswODAwLCBKYXNvbiBXYW5nIDxqYXNvd2FuZ0ByZWRoYXQuY29t PiB3cm90ZToKPj4g5ZyoIDIwMjEvNi8xMCDkuIvljYg0OjIyLCBYdWFuIFpodW8g5YaZ6YGTOgo+ Pj4gQ29tcGFyZWQgdG8gdGhlIGNhc2Ugb2YgeHNrIHR4LCB0aGUgY2FzZSBvZiB4c2sgemMgcngg aXMgbW9yZQo+Pj4gY29tcGxpY2F0ZWQuCj4+Pgo+Pj4gV2hlbiB3ZSBwcm9jZXNzIHRoZSBidWYg cmVjZWl2ZWQgYnkgdnEsIHdlIG1heSBlbmNvdW50ZXIgb3JkaW5hcnkKPj4+IGJ1ZmZlcnMsIG9y IHhzayBidWZmZXJzLiBXaGF0IG1ha2VzIHRoZSBzaXR1YXRpb24gbW9yZSBjb21wbGljYXRlZCBp cwo+Pj4gdGhhdCBpbiB0aGUgY2FzZSBvZiBtZXJnZWFibGUsIHdoZW4gbnVtX2J1ZmZlciA+IDEs IHdlIG1heSBzdGlsbAo+Pj4gZW5jb3VudGVyIHRoZSBjYXNlIHdoZXJlIHhzayBidWZmZXIgaXMg bWl4ZWQgd2l0aCBvcmRpbmFyeSBidWZmZXIuCj4+Pgo+Pj4gQW5vdGhlciB0aGluZyB0aGF0IG1h a2VzIHRoZSBzaXR1YXRpb24gbW9yZSBjb21wbGljYXRlZCBpcyB0aGF0IHdoZW4gd2UKPj4+IGdl dCBhbiB4c2sgYnVmZmVyIGZyb20gdnEsIHRoZSB4c2sgYm91bmQgdG8gdGhpcyB4c2sgYnVmZmVy IG1heSBoYXZlCj4+PiBiZWVuIHVuYm91bmQuCj4+Pgo+Pj4gU2lnbmVkLW9mZi1ieTogWHVhbiBa aHVvIDx4dWFuemh1b0BsaW51eC5hbGliYWJhLmNvbT4KPj4KPj4gVGhpcyBpcyBzb21laG93IHNp bWlsYXIgdG8gdGhlIGNhc2Ugb2YgdHggd2hlcmUgd2UgZG9uJ3QgaGF2ZSBwZXIgdnEgcmVzZXQu Cj4+Cj4+IFsuLi5dCj4+Cj4+PiAtCWlmICh2aS0+bWVyZ2VhYmxlX3J4X2J1ZnMpCj4+PiArCWlm IChpc194c2tfY3R4KGN0eCkpCj4+PiArCQlza2IgPSByZWNlaXZlX3hzayhkZXYsIHZpLCBycSwg YnVmLCBsZW4sIHhkcF94bWl0LCBzdGF0cyk7Cj4+PiArCWVsc2UgaWYgKHZpLT5tZXJnZWFibGVf cnhfYnVmcykKPj4+ICAgIAkJc2tiID0gcmVjZWl2ZV9tZXJnZWFibGUoZGV2LCB2aSwgcnEsIGJ1 ZiwgY3R4LCBsZW4sIHhkcF94bWl0LAo+Pj4gICAgCQkJCQlzdGF0cyk7Cj4+PiAgICAJZWxzZSBp ZiAodmktPmJpZ19wYWNrZXRzKQo+Pj4gQEAgLTExNzUsNiArMTI5NiwxNCBAQCBzdGF0aWMgYm9v bCB0cnlfZmlsbF9yZWN2KHN0cnVjdCB2aXJ0bmV0X2luZm8gKnZpLCBzdHJ1Y3QgcmVjZWl2ZV9x dWV1ZSAqcnEsCj4+PiAgICAJaW50IGVycjsKPj4+ICAgIAlib29sIG9vbTsKPj4+Cj4+PiArCS8q IEJlY2F1c2UgdmlydGlvLW5ldCBkb2VzIG5vdCB5ZXQgc3VwcG9ydCBmbG93IGRpcmVjdCwKPj4K Pj4gTm90ZSB0aGF0IHRoaXMgaXMgbm90IHRoZSBjYXNlIGFueSBtb3JlLiBSU1MgaGFzIGJlZW4g c3VwcG9ydGVkIGJ5Cj4+IHZpcnRpbyBzcGVjIGFuZCBxZW11L3Zob3N0L3RhcCBub3cuIFdlIGp1 c3QgbmVlZCBzb21lIHdvcmsgb24gdGhlCj4+IHZpcnRpby1uZXQgZHJpdmVyIHBhcnQgKGUuZyB0 aGUgZXRob29sIGludGVyZmFjZSkuCj4gT2gsIGFyZSB0aGVyZSBhbnkgcGxhbnM/IFdobyBpcyBk b2luZyB0aGlzIHdvcmssIGNhbiBJIGhlbHA/CgoKUWVtdSBhbmQgc3BlYyBoYXMgc3VwcG9ydCBS U1MuCgpUQVAgc3VwcG9ydCBpcyByZWFkeSB2aWEgc3RlZXJpbmcgZUJQRiBwcm9ncmFtLCB5b3Ug Y2FuIHRyeSB0byBwbGF5IGl0IAp3aXRoIGN1cnJlbnQgcWVtdSBtYXN0ZXIuCgpUaGUgb25seSB0 aGluZyBtaXNzZWQgaXMgdGhlIExpbnV4IGRyaXZlciwgSSB0aGluayBZdXJpIG9yIEFuZHJldyBp cyAKd29ya2luZyBvbiB0aGlzLgoKVGhhbmtzCgoKPgo+IFRoYW5rcy4KPgo+PiBUaGFua3MKPj4K Pj4KCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fClZpcnR1 YWxpemF0aW9uIG1haWxpbmcgbGlzdApWaXJ0dWFsaXphdGlvbkBsaXN0cy5saW51eC1mb3VuZGF0 aW9uLm9yZwpodHRwczovL2xpc3RzLmxpbnV4Zm91bmRhdGlvbi5vcmcvbWFpbG1hbi9saXN0aW5m by92aXJ0dWFsaXphdGlvbg==