From patchwork Tue Apr 13 03:15:13 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xuan Zhuo X-Patchwork-Id: 12199175 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=-11.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,UNPARSEABLE_RELAY,USER_AGENT_GIT 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 1F59BC433ED for ; Tue, 13 Apr 2021 03:15:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 006AE61222 for ; Tue, 13 Apr 2021 03:15:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S241518AbhDMDPo (ORCPT ); Mon, 12 Apr 2021 23:15:44 -0400 Received: from out30-132.freemail.mail.aliyun.com ([115.124.30.132]:41778 "EHLO out30-132.freemail.mail.aliyun.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S241101AbhDMDPo (ORCPT ); Mon, 12 Apr 2021 23:15:44 -0400 X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R921e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=e01e04420;MF=xuanzhuo@linux.alibaba.com;NM=1;PH=DS;RN=15;SR=0;TI=SMTPD_---0UVPZqgO_1618283723; Received: from localhost(mailfrom:xuanzhuo@linux.alibaba.com fp:SMTPD_---0UVPZqgO_1618283723) by smtp.aliyun-inc.com(127.0.0.1); Tue, 13 Apr 2021 11:15:23 +0800 From: Xuan Zhuo To: netdev@vger.kernel.org Cc: "Michael S. Tsirkin" , Jason Wang , "David S. Miller" , Jakub Kicinski , =?utf-8?b?QmrDtnJuIFTDtnBlbA==?= , Magnus Karlsson , Jonathan Lemon , Alexei Starovoitov , Daniel Borkmann , Jesper Dangaard Brouer , John Fastabend , virtualization@lists.linux-foundation.org, bpf@vger.kernel.org, "dust . li" Subject: [PATCH net-next v4 00/10] virtio-net support xdp socket zero copy xmit Date: Tue, 13 Apr 2021 11:15:13 +0800 Message-Id: <20210413031523.73507-1-xuanzhuo@linux.alibaba.com> X-Mailer: git-send-email 2.31.0 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org XDP socket is an excellent by pass kernel network transmission framework. The zero copy feature of xsk (XDP socket) needs to be supported by the driver. The performance of zero copy is very good. mlx5 and intel ixgbe already support this feature, This patch set allows virtio-net to support xsk's zerocopy xmit feature. And xsk's zerocopy rx has made major changes to virtio-net, and I hope to submit it after this patch set are received. Compared with other drivers, virtio-net does not directly obtain the dma address, so I first obtain the xsk page, and then pass the page to virtio. When recycling the sent packets, we have to distinguish between skb and xdp. Now we have to distinguish between skb, xdp, xsk. ---------------- Performance Testing ------------ The udp package tool implemented by the interface of xsk vs sockperf(kernel udp) for performance testing: xsk zero copy xmit in virtio-net: CPU PPS MSGSIZE vhost-cpu 7.9% 511804 64 100% 13.3%% 484373 1500 100% sockperf: CPU PPS MSGSIZE vhost-cpu 100% 375227 64 89.1% 100% 307322 1500 81.5% v4: 1. add priv_flags IFF_NOT_USE_DMA_ADDR 2. more reasonable patch split Xuan Zhuo (10): netdevice: priv_flags extend to 64bit netdevice: add priv_flags IFF_NOT_USE_DMA_ADDR virtio-net: add priv_flags IFF_NOT_USE_DMA_ADDR xsk: support get page by addr xsk: XDP_SETUP_XSK_POOL support option IFF_NOT_USE_DMA_ADDR virtio-net: unify the code for recycling the xmit ptr virtio-net: virtnet_poll_tx support budget check virtio-net: xsk zero copy xmit setup virtio-net: xsk zero copy xmit implement wakeup and xmit virtio-net: xsk zero copy xmit kick by threshold drivers/net/virtio_net.c | 479 ++++++++++++++++++++++++++++++++----- include/linux/netdevice.h | 139 ++++++----- include/net/xdp_sock_drv.h | 11 + net/xdp/xsk_buff_pool.c | 2 +- 4 files changed, 511 insertions(+), 120 deletions(-) --- 2.31.0