From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id A2676A0A0F; Mon, 5 Jul 2021 08:18:51 +0200 (CEST) Received: from [217.70.189.124] (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 48E9F40686; Mon, 5 Jul 2021 08:18:51 +0200 (CEST) Received: from mga04.intel.com (mga04.intel.com [192.55.52.120]) by mails.dpdk.org (Postfix) with ESMTP id 7ED7840141 for ; Mon, 5 Jul 2021 08:18:49 +0200 (CEST) X-IronPort-AV: E=McAfee;i="6200,9189,10035"; a="207101861" X-IronPort-AV: E=Sophos;i="5.83,325,1616482800"; d="scan'208";a="207101861" Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by fmsmga104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 04 Jul 2021 23:18:47 -0700 X-IronPort-AV: E=Sophos;i="5.83,325,1616482800"; d="scan'208";a="485374941" Received: from unknown (HELO localhost.localdomain) ([10.240.183.109]) by fmsmga003-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 04 Jul 2021 23:18:44 -0700 From: Wenwu Ma To: dev@dpdk.org Cc: maxime.coquelin@redhat.com, chenbo.xia@intel.com, cheng1.jiang@intel.com, jiayu.hu@intel.com, Wenwu Ma Date: Mon, 5 Jul 2021 18:11:47 +0000 Message-Id: <20210705181151.141752-1-wenwux.ma@intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210602083110.5530-1-yuanx.wang@intel.com> References: <20210602083110.5530-1-yuanx.wang@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Subject: [dpdk-dev] [PATCH v5 0/4] support async dequeue for split ring X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" This patch implements asynchronous dequeue data path for split ring. A new asynchronous dequeue function is introduced. With this function, the application can try to receive packets from the guest with offloading large copies to the DMA engine, thus saving precious CPU cycles. v5: - DMA address use IOVA instead of VA. v4: - Fix wrong packet index issue in async dequeue improve the performance of small packet copies. v3: - Fix compilation warning and error in arm platform. - Restore the removed function virtio_dev_pktmbuf_alloc, async dequeue allocate packets in separate. v2: - Refactor vhost datapath as preliminary patch for this series. - The change of using new API in examples/vhost is put into a dedicated patch. - Check queue_id value before using it. - Async dequeue performance enhancement. 160% performance improvement for v2 vs. v1. - Async dequeue API name change from rte_vhost_try_dequeue_burst to rte_vhost_async_try_dequeue_burst. - The completed package updates the used ring directly. Wenwu Ma (3): examples/vhost: refactor vhost enqueue and dequeue datapaths. examples/vhost: use a new API to query remaining ring space examples/vhost: support vhost async dequeue data path Yuan Wang (1): vhost: support async dequeue for split ring doc/guides/prog_guide/vhost_lib.rst | 10 + doc/guides/sample_app_ug/vhost.rst | 9 +- examples/vhost/ioat.c | 67 +++- examples/vhost/ioat.h | 25 ++ examples/vhost/main.c | 224 +++++++---- examples/vhost/main.h | 33 +- examples/vhost/virtio_net.c | 16 +- lib/vhost/rte_vhost_async.h | 44 +- lib/vhost/version.map | 3 + lib/vhost/virtio_net.c | 601 ++++++++++++++++++++++++++++ 10 files changed, 924 insertions(+), 108 deletions(-) -- 2.25.1