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 9666BA00C3; Fri, 13 May 2022 04:05:01 +0200 (CEST) Received: from [217.70.189.124] (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 3C5F340E64; Fri, 13 May 2022 04:05:01 +0200 (CEST) Received: from mga11.intel.com (mga11.intel.com [192.55.52.93]) by mails.dpdk.org (Postfix) with ESMTP id 89F3340DDE for ; Fri, 13 May 2022 04:04:59 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1652407499; x=1683943499; h=from:to:cc:subject:date:message-id:in-reply-to: references; bh=9CW4YBRXO42oPvF3w0DEuVOp+TiN0MQiWWnxyET1p7M=; b=g8CoZNYLdGMnsoIikMjpBpbulVc4vJKh3vqiWgUHgLytKxeIPpU1CsbX Fre5RjOEArb4tTeBJ0OFpJf9RSNymdIBkiu5w1LY5WN/zmCAKF8pwamql jpfsykG3I8N1q0DOB+s3XxYz0oU0iQKGYkMIvUVoSa0OaFnJGmdn9fKTn sa3pMROlltihUqFT3DJNYzvbo99c1woNZDaIKb0fbpv6ZWI+W1upwLp5f 8RQZ/V4P8g0TIgSBQ4mPf70whtiq/OERQmiM0zHku568KN/CuqZBmXfCS k9th23JvRJOZVCeckHr8h6JFndBALWtda9CvfJQogCBIkv8ORap7DbmcF w==; X-IronPort-AV: E=McAfee;i="6400,9594,10345"; a="267781335" X-IronPort-AV: E=Sophos;i="5.91,221,1647327600"; d="scan'208";a="267781335" Received: from orsmga008.jf.intel.com ([10.7.209.65]) by fmsmga102.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 12 May 2022 19:04:58 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.91,221,1647327600"; d="scan'208";a="594983079" Received: from npg-dpdk-xuan-cbdma.sh.intel.com ([10.67.110.228]) by orsmga008.jf.intel.com with ESMTP; 12 May 2022 19:04:55 -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 v5 0/5] vhost: support async dequeue data path Date: Fri, 13 May 2022 02:00:17 +0000 Message-Id: <20220513020022.1054-1-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 v4->v5: * rebase to latest DPDK * add some checks 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 | 5 + doc/guides/sample_app_ug/vhost.rst | 9 +- examples/vhost/main.c | 284 ++++++++++----- examples/vhost/main.h | 32 +- examples/vhost/virtio_net.c | 16 +- lib/vhost/rte_vhost_async.h | 34 ++ lib/vhost/version.map | 2 +- lib/vhost/vhost.h | 1 + lib/vhost/virtio_net.c | 473 ++++++++++++++++++++++--- 10 files changed, 711 insertions(+), 152 deletions(-) -- 2.17.1