From patchwork Tue Aug 6 18:24:58 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jin Yu X-Patchwork-Id: 57487 Return-Path: X-Original-To: patchwork@dpdk.org Delivered-To: patchwork@dpdk.org Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id 9A4181BE39; Tue, 6 Aug 2019 12:40:59 +0200 (CEST) Received: from mga17.intel.com (mga17.intel.com [192.55.52.151]) by dpdk.org (Postfix) with ESMTP id 3187C1BE35 for ; Tue, 6 Aug 2019 12:40:57 +0200 (CEST) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by fmsmga107.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 06 Aug 2019 03:40:56 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.64,353,1559545200"; d="scan'208";a="202771911" Received: from storage36.sh.intel.com ([10.67.110.166]) by fmsmga002.fm.intel.com with ESMTP; 06 Aug 2019 03:40:55 -0700 From: JinYu To: dev@dpdk.org Cc: changpeng.liu@intel.com, tiwei.bie@intel.com, zhihong.wang@intel.com, maxime.coquelin@redhat.com, JinYu Date: Wed, 7 Aug 2019 02:24:58 +0800 Message-Id: <20190806182500.22320-1-jin.yu@intel.com> X-Mailer: git-send-email 2.17.2 In-Reply-To: <20190731204050.40633> References: <20190731204050.40633> Subject: [dpdk-dev] [PATCH v5 0/2] vhost: support inflight share memory protocol feature X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 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 patches introduces two new messages VHOST_USER_GET_INFLIGHT_FD and VHOST_USER_SET_INFLIGHT_FD to support transferring a shared buffer between qemu and backend. Now It can both support split and packed ring. The example code show how these API work. The test has passed. How to test the example: 1, Qemu need two patches. https://patchwork.kernel.org/patch/10766813/ https://patchwork.kernel.org/patch/10861411/ it also needs some manual modifications: we should confirm that before we send get inflight we have already sent the set features but it seems Qemu didn't do like this. So we manually revise this, we can add below code in vhost_dev_get_inflight int r; r = vhost_dev_set_features(dev, dev->log_enabled); if (r < 0) { return -errno; } before get_inflight_fd. 2, Guest OS version >= 5.0 3, run the example 4, run the qemu with vhost-user-blk-pci. eg: -chardev socket,id=spdk_vhost_blk0,reconnect=1,path=xxxx\ -device vhost-user-blk-pci,ring_packed=on,chardev=spdk_vhost_blk0,num-queues=1\ 5, run fio in the guest 6, kill the example(vhost-user backend) and run again. 7, the fio in the guest should continue run without errors. JinYu (2): vhost: support inflight share memory protocol feature vhost: add vhost-user-blk example which support inflight examples/vhost_blk/Makefile | 67 ++ examples/vhost_blk/blk.c | 125 +++ examples/vhost_blk/blk_spec.h | 95 ++ examples/vhost_blk/meson.build | 20 + examples/vhost_blk/vhost_blk.c | 1313 ++++++++++++++++++++++++ examples/vhost_blk/vhost_blk.h | 116 +++ examples/vhost_blk/vhost_blk_compat.c | 195 ++++ lib/librte_vhost/rte_vhost.h | 255 ++++- lib/librte_vhost/rte_vhost_version.map | 12 + lib/librte_vhost/vhost.c | 396 ++++++- lib/librte_vhost/vhost.h | 61 +- lib/librte_vhost/vhost_user.c | 437 +++++++- lib/librte_vhost/vhost_user.h | 13 +- 13 files changed, 3059 insertions(+), 46 deletions(-) create mode 100644 examples/vhost_blk/Makefile create mode 100644 examples/vhost_blk/blk.c create mode 100644 examples/vhost_blk/blk_spec.h create mode 100644 examples/vhost_blk/meson.build create mode 100644 examples/vhost_blk/vhost_blk.c create mode 100644 examples/vhost_blk/vhost_blk.h create mode 100644 examples/vhost_blk/vhost_blk_compat.c