From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga14.intel.com (mga14.intel.com [192.55.52.115]) by dpdk.org (Postfix) with ESMTP id F0B2E231C for ; Tue, 20 May 2014 07:25:13 +0200 (CEST) Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by fmsmga103.fm.intel.com with ESMTP; 19 May 2014 22:21:24 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.98,871,1392192000"; d="scan'208";a="534624995" Received: from shilc102.sh.intel.com ([10.239.39.44]) by fmsmga001.fm.intel.com with ESMTP; 19 May 2014 22:25:20 -0700 Received: from shecgisg004.sh.intel.com (shecgisg004.sh.intel.com [10.239.29.89]) by shilc102.sh.intel.com (8.13.6/8.13.6/SuSE Linux 0.8) with ESMTP id s4K5PF1Y024613; Tue, 20 May 2014 13:25:17 +0800 Received: from shecgisg004.sh.intel.com (localhost [127.0.0.1]) by shecgisg004.sh.intel.com (8.13.6/8.13.6/SuSE Linux 0.8) with ESMTP id s4K5PCQl019953; Tue, 20 May 2014 13:25:14 +0800 Received: (from couyang@localhost) by shecgisg004.sh.intel.com (8.13.6/8.13.6/Submit) id s4K5PBk8019949; Tue, 20 May 2014 13:25:11 +0800 From: Ouyang Changchun To: dev@dpdk.org Date: Tue, 20 May 2014 13:25:08 +0800 Message-Id: <1400563511-19848-1-git-send-email-changchun.ouyang@intel.com> X-Mailer: git-send-email 1.7.0.7 Subject: [dpdk-dev] [PATCH v2 0/3] Support zero copy RX/TX in user space vhost X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: patches and discussions about DPDK List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 20 May 2014 05:25:14 -0000 This patch series support user space vhost zero copy. It removes packets copying between host and guest in RX/TX. And it introduces an extra ring to store the detached mbufs. At initialization stage all mbufs put into this ring; when one guest starts, vhost gets the available buffer address allocated by guest for RX and translates them into host space addresses, then attaches them to mbufs and puts the attached mbufs into mempool. Queue starting and DMA refilling will get mbufs from mempool and use them to set the DMA addresses. For TX, it gets the buffer addresses of available packets to be transmitted from guest and translates them to host space addresses, then attaches them to mbufs and puts them to TX queues. After TX finishes, it pulls mbufs out from mempool, detaches them and puts them back into the extra ring. This patch series also implement queue start and stop functionality in IXGBE PMD; and enable hardware loopback for VMDQ mode in IXGBE PMD. Ouyang Changchun (3): Add API to support queue start and stop functionality for RX/TX. Implement queue start and stop functionality in IXGBE PMD; Enable hardware loopback for VMDQ mode in IXGBE PMD. Support user space vhost zero copy, it removes packets copying between host and guest in RX/TX. examples/vhost/main.c | 1410 ++++++++++++++++++++++++++---- examples/vhost/virtio-net.c | 120 ++- examples/vhost/virtio-net.h | 15 +- lib/librte_eal/linuxapp/eal/eal_memory.c | 2 +- lib/librte_ether/rte_ethdev.c | 104 +++ lib/librte_ether/rte_ethdev.h | 80 ++ lib/librte_pmd_ixgbe/ixgbe_ethdev.c | 4 + lib/librte_pmd_ixgbe/ixgbe_ethdev.h | 8 + lib/librte_pmd_ixgbe/ixgbe_rxtx.c | 233 ++++- lib/librte_pmd_ixgbe/ixgbe_rxtx.h | 6 + 10 files changed, 1787 insertions(+), 195 deletions(-) -- 1.9.0