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 934A0A00BE; Thu, 5 May 2022 08:30:48 +0200 (CEST) Received: from [217.70.189.124] (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 352CC40E5A; Thu, 5 May 2022 08:30:48 +0200 (CEST) Received: from mga02.intel.com (mga02.intel.com [134.134.136.20]) by mails.dpdk.org (Postfix) with ESMTP id 4F05540042 for ; Thu, 5 May 2022 08:30:46 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1651732246; x=1683268246; h=from:to:cc:subject:date:message-id:in-reply-to: references; bh=v+CNsPefYlmZc/v3iztnMBVHOsB6e2tNFxealVzDlwk=; b=jSmduZRpCtsj2hJ8O150oeiCGB+FpBj7+1s1ZoBEkxqlCcnCIveWZAul fkQaT/mnBq962hVkQef68Ze0CjDb17yWWitx4tGylQ/LuXFxrJIFZJ3u9 jRDwTBLDVazCvIFy+CsR3AlQJsjlxAdnNtipMPMsjgwqhY2+9LV2FAjI2 BnLtwXOQbAglXQsdFgG7XFJZjuU+frIJs44gd8ksLVbyy/OPdEXIdjlL3 4OTvSwTV8T8w20X9FXL0s5V6Xzen2an8ewF041NJQeYj45F3yHItCJ2Ey wspslw+BTBDUaFMsiIZIsXP/pr0kI0+5m0YtZR0x/Di/hTm2IvySHh5cC w==; X-IronPort-AV: E=McAfee;i="6400,9594,10337"; a="255488220" X-IronPort-AV: E=Sophos;i="5.91,200,1647327600"; d="scan'208";a="255488220" Received: from orsmga007.jf.intel.com ([10.7.209.58]) by orsmga101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 04 May 2022 23:27:06 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.91,200,1647327600"; d="scan'208";a="563092906" Received: from npg-dpdk-xuan-cbdma.sh.intel.com ([10.67.110.228]) by orsmga007.jf.intel.com with ESMTP; 04 May 2022 23:27:04 -0700 From: xuan.ding@intel.com To: maxime.coquelin@redhat.com, chenbo.xia@intel.com Cc: dev@dpdk.org, jiayu.hu@intel.com, cheng1.jiang@intel.com, sunil.pai.g@intel.com, liangma@liangbit.com, Xuan Ding Subject: [PATCH v4 0/5] vhost: support async dequeue data path Date: Thu, 5 May 2022 06:23:30 +0000 Message-Id: <20220505062335.25445-1-xuan.ding@intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20220407152546.38167-1-xuan.ding@intel.com> References: <20220407152546.38167-1-xuan.ding@intel.com> 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 From: Xuan Ding The presence of asynchronous path allows applications to offload memory copies to DMA engine, so as to save CPU cycles and improve the copy performance. This patch set implements vhost async dequeue data path for split ring. The code is based on latest enqueue changes [1]. This patch set is a new design and implementation of [2]. Since dmadev was introduced in DPDK 21.11, to simplify application logics, this patch integrates dmadev in vhost. With dmadev integrated, vhost supports M:N mapping between vrings and DMA virtual channels. Specifically, one vring can use multiple different DMA channels and one DMA channel can be shared by multiple vrings at the same time. A new asynchronous dequeue function is introduced: 1) rte_vhost_async_try_dequeue_burst(int vid, uint16_t queue_id, struct rte_mempool *mbuf_pool, struct rte_mbuf **pkts, uint16_t count, int *nr_inflight, uint16_t dma_id, uint16_t vchan_id) Receive packets from the guest and offloads copies to DMA virtual channel. [1] https://mails.dpdk.org/archives/dev/2022-February/234555.html [2] https://mails.dpdk.org/archives/dev/2021-September/218591.html v3->v4: * fix CI build warnings * adjust some indentation * pass vq instead of queue_id v2->v3: * fix mbuf not updated correctly for large packets v1->v2: * fix a typo * fix a bug in desc_to_mbuf filling RFC v3 -> v1: * add sync and async path descriptor to mbuf refactoring * add API description in docs RFC v2 -> RFC v3: * rebase to latest DPDK version RFC v1 -> RFC v2: * fix one bug in example * rename vchan to vchan_id * check if dma_id and vchan_id valid * rework all the logs to new standard Xuan Ding (5): vhost: prepare sync for descriptor to mbuf refactoring vhost: prepare async for descriptor to mbuf refactoring vhost: merge sync and async descriptor to mbuf filling vhost: support async dequeue for split ring examples/vhost: support async dequeue data path doc/guides/prog_guide/vhost_lib.rst | 7 + doc/guides/rel_notes/release_22_07.rst | 4 + doc/guides/sample_app_ug/vhost.rst | 9 +- examples/vhost/main.c | 292 +++++++++++----- examples/vhost/main.h | 35 +- examples/vhost/virtio_net.c | 16 +- lib/vhost/rte_vhost_async.h | 33 ++ lib/vhost/version.map | 3 + lib/vhost/vhost.h | 1 + lib/vhost/virtio_net.c | 467 ++++++++++++++++++++++--- 10 files changed, 716 insertions(+), 151 deletions(-) -- 2.17.1